JP2007129491A - Blurring detection system device, imaging apparatus, external recording medium, and its program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blurring detection system device capable of acquiring an image with few blur or no blur, and to provide an imaging apparatus, external recording medium, and its program. <P>SOLUTION: A sensor 2 and a sensor 3 for detecting hand deflection in the Yaw direction and the Pitch direction are provided at a memory card 1. When the memory card 1 is connected to a digital camera 31 and the camera is set to a photographing mode, the digital camera 31 acquires the amount data of blurring detected by the memory card 1 one by one. If a shutter button is fully pushed, blurring in an image of the acquired sill image data is corrected based on the amount data of blurring acquired during expose, and recorded on the memory card 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a shake detection system apparatus, an imaging apparatus, an external recording medium, and a program thereof, and more particularly, to a shake detection system apparatus, an imaging apparatus, and an external recording medium that can obtain an image with little or no blur. And the program.

Conventionally, when shooting a subject with a digital camera, image blur has occurred due to camera shake or movement of the subject. Such image blur can be prevented to some extent by increasing the imaging sensitivity, increasing the shutter speed, or learning of the photographer, but has a limit.
For this reason, a technique for correcting blur by changing the apex angle of a variable apex angle prism in which liquid is sealed in two glasses and canceling optical axis movement due to blur (Patent Document 1), a correction lens is provided, and the correction is performed. A technique for correcting the blur by moving the lens up and down and right and left perpendicular to the optical axis has appeared (Patent Document 2).

Japanese Patent Laid-Open No. 08-076164

Japanese Patent Laid-Open No. 01-088421

However, according to the technique described in Patent Document 1, since the vertical prism is arranged on the subject side, there is a problem that the lens barrel becomes long, and the mechanism is complicated and large.
Further, according to the technique described in Patent Document 2, since the correction lens is arranged inside the optical system, the lens barrel can be shortened, but since the correction lens is moved eccentrically, the eccentric coma aberration, the eccentric astigmatism, There has been a problem that the degree of difficulty in optical design is high, such as decentration distortion and the like, and that conventional optical systems and interchangeable lenses cannot be used.
In addition, there is a problem that the cost is high.

  Therefore, the present invention has been made in view of such conventional problems, and a blur detection system apparatus and an imaging device capable of obtaining a blur-free or blur-free image while suppressing an increase in size and cost of a camera body. An object is to provide an apparatus, an external recording medium, and a program thereof.

In order to achieve the above object, a shake detection system apparatus according to a first aspect of the present invention is a shake detection system apparatus comprising an imaging device and a shake detection device capable of inputting and outputting data between the imaging device,
The blur detection device is:
Blur detection means for detecting the blur amount;
First output means for outputting shake amount data of the shake amount detected by the shake detection means;
With
The imaging device
Imaging means for imaging a subject;
First acquisition means for acquiring blur amount data output by the first output means;
A blur correction unit that corrects blur of an image of the image data captured by the imaging unit based on the blur amount data acquired by the first acquisition unit;
Second output means for outputting image data that has undergone shake correction by the shake correction means;
It is provided with.

For example, as described in claim 2, the imaging device includes:
A shooting control means for controlling still image shooting of a subject by the imaging means;
The blur correction means includes
Based on the blur amount data acquired by the first acquisition unit during still image shooting by the shooting control unit, image blur of the image data obtained by still image shooting by the shooting control unit is corrected. May be.

Further, for example, as described in claim 3, the photographing control unit includes:
Taking a still image of a subject by reading out the image data obtained by the imaging means after performing exposure,
The first acquisition means includes
Obtaining blur amount data detected by the blur detection means during exposure by the photographing control means;
The blur correction means includes
Based on the blur amount data acquired by the first acquisition unit, image blur of image data obtained by still image shooting by the shooting control unit may be corrected.

To achieve the above object, a shake detection system apparatus according to a fourth aspect of the present invention is a shake detection system apparatus comprising an imaging device and a shake detection device capable of inputting / outputting data between the imaging device,
The blur detection device is:
Blur detection means for detecting the blur amount;
First output means for outputting shake amount data of the shake amount detected by the shake detection means;
With
The imaging device
Imaging means for imaging a subject;
First acquisition means for acquiring blur amount data output by the first output means;
The image data captured by the imaging unit and the blur amount data acquired by the first acquisition unit are associated with each other and sequentially stored in the storage unit, and among the blur amount data stored in the storage unit, Minimum blur image selection means for selecting image data corresponding to blur amount data with a small blur amount;
Second output means for outputting the image data selected by the minimum blur image selecting means;
It is provided with.

For example, as described in claim 5, the imaging device includes:
Instructing means for the user to stop imaging of the subject by the imaging means,
The minimum blur image selection means includes
When the instruction unit instructs to stop imaging of the subject, the image data captured by the imaging unit and the blur amount data detected by the detection unit and acquired by the first acquisition unit A means for prohibiting storage may be included.

For example, as described in claim 6, the minimum blur image selection unit includes:
Associating the image data captured by the imaging unit with the blur amount data detected by the detection unit and acquired by the first acquisition unit at the same time as when the image data was captured You may make it memorize | store in the said memory | storage means.

For example, as described in claim 7, the imaging device includes:
A selection means for the user to select image data;
The minimum blur image selection means includes
When image data is selected by the selection means, the selected image data may be selected.

For example, as described in claim 8, the imaging device includes:
A first display control unit configured to display on the display unit an image of the plurality of image data stored in the storage unit and a blur amount based on the blur amount data stored in association with the image data; It may be.

In order to achieve the above object, a shake detection system apparatus according to a ninth aspect of the present invention is a shake detection system apparatus comprising an imaging device and a shake detection device capable of inputting / outputting data between the imaging device,
The blur detection device is:
Blur detection means for detecting the blur amount;
First output means for outputting shake amount data of the shake amount detected by the shake detection means;
With
The imaging device
Imaging means for imaging a subject;
First acquisition means for acquiring blur amount data output by the first output means;
An instruction means for the user to instruct photographing;
When there is an instruction to shoot by the instruction means, shooting control means for taking a still image of a subject by reading out image data taken by the imaging means after performing exposure;
It is determined whether or not a blur amount based on the blur amount data detected by the detection unit and acquired by the first acquisition unit during exposure by the photographing control unit is smaller than a predetermined blur amount, and the acquired blur amount When it is determined that the amount of blur based on the data is not smaller than the predetermined amount of blur, the control unit is configured to forcibly end the exposure by the imaging control unit and read the image data captured by the imaging unit. When,
Second output means for outputting image data read by the control means;
It is provided with.

For example, as described in claim 10, the control means includes
You may make it complete | finish exposure by closing a shutter.

For example, as described in claim 11, the imaging device includes:
Exposure correction means for correcting the exposure of the image data,
The exposure correction means includes
Correcting the exposure of the image data according to the underexposure amount of the image data read by the control means,
The second output means includes
Although the exposure correction is performed by the exposure correction means, image data may be output.

For example, as described in claim 12, the second output means includes
If the exposure by the imaging control unit is terminated without determining that the blur amount based on the blur amount data acquired by the first acquisition unit is smaller than the predetermined blur amount by the control unit, the shooting control is performed. The image data read by the means may be output.

For example, as described in claim 13, the imaging device includes:
Recording control means for recording the image data output by the second output means in a recording means;
You may make it provide.

Further, for example, as described in claim 14, the blur detection device includes:
Second acquisition means for acquiring image data output by the second output means;
Recording control means for recording the image data acquired by the second acquisition means in a recording means;
You may make it provide.

For example, as described in claim 15, the imaging device includes:
Second display control means for displaying on the display means an image of the image data picked up by the image pickup means and a shake amount based on the shake amount data acquired by the first acquisition means may be provided. Good.

In order to achieve the above object, a shake detection system apparatus according to a sixteenth aspect of the present invention is a shake detection system apparatus comprising an imaging device and a shake detection device capable of inputting / outputting data between the imaging device,
The imaging device
Imaging means for imaging a subject;
A first time measuring means for measuring time;
Shooting control means for shooting a still image of a subject by reading out image data taken by the imaging means after performing exposure; and
An output means for outputting the photographing time measured by the first time measuring means and the image data read by the photographing control means;
With
The blur detection device is:
Blur detection means for detecting the blur amount;
Acquisition means for acquiring image data and photographing time output by the output means;
A blur correction unit that corrects a blur of an image of the image data acquired by the acquisition unit based on the blur amount data detected by the blur detection unit at the photographing time acquired by the acquisition unit;
Recording control means for recording the image data subjected to the blur correction by the blur correction means in the recording means;
It is provided with.

Further, for example, as described in claim 17, the blur detection device includes:
A second time measuring means for measuring time;
Storage control means for sequentially storing the shake amount data detected by the shake detection means and the time measured by the second time measurement means in association with each other in the storage means;
Reading means for reading out the blur amount data corresponding to the photographing time acquired by the acquisition means from the storage means;
With
The blur correction means includes
You may make it correct | amend the blurring of the image of the image data acquired by the said acquisition means based on the blur amount data corresponding to the imaging | photography time read by the said reading means.

Further, for example, as described in claim 18, the second time measuring means includes:
You may make it synchronize with a said 1st time measuring means.

For example, as described in claim 19, the photographing time measured by the first time measuring means is
It may be a time from an exposure start time to an exposure end time by the photographing control means.

Further, for example, as described in claim 20, the blur detection device includes:
A determination unit that determines whether or not a blur amount based on the blur amount data detected by the detection unit at a photographing time acquired by the acquisition unit is smaller than a predetermined blur amount;
The blur correction means includes
When it is determined by the determination means that the blur amount based on the blur amount data detected by the detection means at the photographing time is not smaller than a predetermined blur amount, the acquisition means acquires the blur amount based on the detected blur amount data. Correct the image blur of the selected image data,
The recording control means includes
The image data that has undergone blur correction by the blur correction unit may be recorded in the recording unit.

For example, as described in claim 21, the correction unit includes:
When the determination unit determines that the blur amount based on the blur amount data detected by the detection unit at the photographing time is smaller than the predetermined blur amount, the correction of the image blur of the image data acquired by the acquisition unit Ban
The recording control means includes
The image data acquired by the acquisition unit may be recorded in the recording unit.

In order to achieve the above object, an image pickup apparatus according to a twenty-second aspect of the present invention provides an acquisition unit that acquires blur amount data detected by an external device that detects a blur amount;
Imaging means for imaging a subject;
A blur correction unit that corrects a blur of an image of the image data captured by the imaging unit based on the blur amount data acquired by the acquisition unit;
Output means for outputting the image data corrected by the blur correction means;
It is provided with.

Further, for example, as described in claim 23, the image capturing unit includes a shooting control unit that controls still image shooting of a subject by the imaging unit,
The blur correction means includes
Based on the blur amount data detected by the external device and acquired by the acquisition unit during still image shooting by the shooting control unit, image blur of image data obtained by still image shooting by the shooting control unit is corrected. You may make it correct | amend.

Further, for example, as described in claim 24, the photographing control unit includes:
Taking a still image of a subject by reading out the image data obtained by the imaging means after performing exposure,
The acquisition means includes
Obtaining blur amount data detected by the external device during exposure by the photographing control means;
The blur correction means includes
Based on the blur amount data acquired by the acquisition unit, image blur of image data obtained by still image shooting by the shooting control unit may be corrected.

In order to achieve the above object, an image pickup apparatus according to the invention described in claim 25 includes acquisition means for acquiring blur amount data detected by an external device that detects the blur amount;
Imaging means for imaging a subject;
The image data captured by the imaging unit and the blur amount data acquired by the acquisition unit are sequentially associated with each other and stored in the storage unit. The blur amount data stored in the storage unit has the largest blur amount. Minimum blur image selection means for selecting image data corresponding to a small amount of blur data;
Output means for outputting the image data selected by the minimum blur image selecting means;
It is provided with.

In addition, for example, as described in claim 26, the user includes an instruction unit for stopping the imaging of the subject by the imaging unit,
The minimum blur image selection means includes
When the instruction unit instructs to stop imaging of the subject, the storage of the image data captured by the imaging unit and the blur amount data detected by the external device and acquired by the acquisition unit is stored. You may make it include the means to prohibit.

Further, for example, as described in claim 27, the minimum blur image selection unit includes:
Image data picked up by the image pickup means and blur amount data detected at the same time as the time when the image data was picked up and acquired by the acquisition means are associated and stored in the storage means It may be.

In addition, for example, as described in claim 28, the image processing apparatus includes selection means for the user to select image data,
The minimum blur image selection means includes
When image data is selected by the selection means, the selected image data may be selected.

  Further, for example, as described in claim 29, an image of a plurality of image data stored in the storage unit, and a blur amount based on the blur amount data stored in association with the image data, You may make it provide the 1st display control means to display on a display means.

In order to achieve the above object, an image pickup apparatus according to a thirty-third aspect of the present invention provides an acquisition unit that acquires blur amount data detected by an external device that detects a blur amount;
Imaging means for imaging a subject;
An instruction means for the user to instruct photographing;
When there is an instruction to shoot by the instruction means, shooting control means for taking a still image of a subject by reading out image data taken by the imaging means after performing exposure;
It is determined whether or not a blur amount based on the blur amount data detected by the external device and acquired by the acquisition unit during exposure by the photographing control unit is smaller than a predetermined blur amount, and based on the acquired blur amount data If it is determined that the amount of blur is not smaller than a predetermined amount of blur, the control means for forcibly ending the exposure by the imaging control means and controlling to read the image data imaged by the imaging means;
Output means for outputting image data read by the control means;
It is provided with.

For example, as described in claim 31, the control means includes
You may make it complete | finish exposure by closing a shutter.

Further, for example, as described in claim 32, the image processing apparatus includes an exposure correction unit that corrects the exposure of the image data.
The exposure correction means includes
Correcting the exposure of the image data based on the underexposure amount of the image data read by the control means,
The output means includes
You may make it output the image data by which exposure correction | amendment was carried out by the said exposure correction means.

Further, for example, as described in claim 33, the output means includes:
When exposure by the photographing control unit is completed without determining that the blur amount based on the blur amount data acquired by the acquisition unit is not smaller than a predetermined blur amount by the control unit, the reading is read by the shooting control unit. The output image data may be output.

  Further, for example, as described in claim 34, a recording control means for recording the image data output by the output means on the recording means may be provided.

  For example, as described in claim 35, an image based on the image data captured by the imaging unit and a blur amount based on the blur amount data acquired by the acquisition unit are displayed on the display unit. You may make it provide the 2nd display control means to make it.

To achieve the above object, an external recording medium according to a thirty-sixth aspect of the present invention is a blur detection means for detecting a blur amount;
Acquisition means for acquiring still image data and shooting time output from the imaging device;
Correction means for correcting image blur of the image data acquired by the acquisition means based on blur amount data detected by the shake detection means at the photographing time acquired by the acquisition means;
Recording control means for recording the image data subjected to the blur correction by the blur correction means in the recording means;
It is provided with.

Further, for example, as described in claim 37, time measuring means for measuring time,
Storage control means for associating and storing the shake amount data detected by the shake detection means and the time measured by the timing means in the storage means;
A reading means for reading out the blur amount data corresponding to the photographing time acquired by the acquiring means from the storage means;
With
The blur correction means includes
You may make it correct | amend the blurring of the image of the image data acquired by the said acquisition means based on the blur amount data corresponding to the imaging | photography time read by the said reading means.

For example, as described in claim 38, the shooting time is
The time from the exposure start time to the exposure end time for obtaining still image data output from the imaging device may be used.

Further, for example, as described in claim 39, it is determined whether or not a blur amount based on the blur amount data detected by the detecting unit at a photographing time acquired by the acquiring unit is smaller than a predetermined blur amount. A judgment means to
The blur correction means includes
When it is determined by the determination means that the blur amount based on the blur amount data detected by the detection means at the photographing time is not smaller than a predetermined blur amount, the acquisition means acquires the blur amount based on the detected blur amount data. Correct the image blur of the selected image data,
The recording control means includes
The image data that has undergone blur correction by the blur correction unit may be recorded in the recording unit.

Further, for example, as described in claim 40, the correction unit includes:
When the blur amount based on the blur amount data detected by the detection unit at the photographing time is determined by the determination unit to be smaller than a predetermined blur amount, image blur correction of the image data acquired by the acquisition unit is performed. Ban,
The recording control means includes
The image data acquired by the acquisition unit may be recorded in the recording unit.

In order to achieve the above object, a program according to the invention of claim 41 includes an acquisition process for acquiring blur amount data detected by an external device that detects a blur amount;
Imaging processing for imaging a subject;
A blur correction process for correcting blur of an image of the image data captured by the imaging process based on the blur amount data acquired by the acquisition process;
An output process for outputting the image data corrected by the blur correction process;
And each of the above processes is executed by a computer.

In order to achieve the above object, a program according to the invention of claim 42 is an acquisition process for acquiring blur amount data detected by an external device that detects a blur amount;
Imaging processing for imaging a subject;
A storage process for sequentially storing the image data captured by the imaging process in association with the blur amount data acquired by the acquisition process in a storage medium;
Output processing for outputting image data corresponding to blur amount data with the smallest blur amount among blur amount data stored in the storage medium;
And each of the above processes is executed by a computer.

In order to achieve the above object, a program according to the invention of claim 43 includes an acquisition process for acquiring blur amount data detected by an external device that detects a blur amount;
First determination processing for determining whether or not a user has instructed shooting,
When it is determined that an instruction to shoot has been given by the first determination process, a shooting process for shooting a still image of a subject by reading out image data obtained by an image sensor after performing exposure;
A second determination process for determining whether or not a blur amount based on the blur amount data detected by the external device and acquired by the acquisition process during exposure by the photographing process is smaller than a predetermined blur amount;
When it is determined that the blur amount based on the blur amount data detected by the second determination process is not smaller than the predetermined blur amount, the exposure by the photographing process is forcibly terminated and obtained by the image sensor. Processing to read out the received image data;
An output process for outputting the image data read by this process;
And each of the above processes is executed by a computer.

To achieve the above object, a program according to a 44th aspect of the present invention provides a blur detection process for detecting a blur amount;
A timekeeping process that measures time,
A storage process for associating the blur amount data detected by the shake detection process with the time measured by the time measurement process in a storage medium;
Acquisition processing for acquiring still image data and shooting time output from the imaging device;
A process of reading out blur amount data corresponding to the photographing time acquired by the acquisition process from the storage medium;
A blur correction process for correcting image blur of the image data acquired by the acquisition process based on the blur amount data read by the process;
A recording process for recording the image data subjected to the blur correction by the blur correction process on a recording medium;
And each of the above processes is executed by a computer.

  According to the invention of the shake detection system apparatus according to claim 1, there is provided a shake detection system apparatus comprising an imaging device and a shake detection device capable of inputting / outputting data between the imaging device and the shake detection device. Comprises: a shake detecting means for detecting a shake amount; and a first output means for outputting shake amount data of the shake amount detected by the shake detecting means, wherein the imaging device picks up an image of the subject. First acquisition means for acquiring blur amount data output by the first output means, and image data captured by the imaging means based on the blur amount data acquired by the first acquisition means And a second output unit that outputs image data that has been subjected to the shake correction by the shake correction unit. Therefore, the structure can be simplified and the size can be reduced. Come, it is possible to correct the blur of the captured image without the cost.

  According to the invention of the blur detection system apparatus according to claim 2, the imaging device includes a shooting control unit that controls shooting of a still image of the subject by the imaging unit, and the blur correction unit is stopped by the shooting control unit. Based on the blur amount data acquired by the first acquisition unit during image shooting, image blur of the image data obtained by still image shooting by the shooting control unit is corrected. The accuracy of correcting still image blurring can be increased, and a beautiful image can be obtained.

  According to the invention of the blur detection system device of the third aspect, the shooting control unit performs still image shooting of the subject by reading out the image data obtained by the imaging unit after performing exposure. The acquisition unit acquires blur amount data detected by the blur detection unit during exposure by the photographing control unit, and the blur correction unit is based on the blur amount data acquired by the first acquisition unit. Since the image blur of the image data obtained by still image shooting by the shooting control means is corrected, the accuracy of still image blur correction can be further increased, and a beautiful image can be obtained. it can.

  According to the invention of the blur detection system apparatus according to claim 4, there is provided a blur detection system apparatus comprising an imaging device and a blur detection device capable of inputting / outputting data to / from the imaging device. Comprises: a shake detecting means for detecting a shake amount; and a first output means for outputting shake amount data of the shake amount detected by the shake detecting means, wherein the imaging device picks up an image of the subject. A first acquisition unit that acquires blur amount data output by the first output unit, image data captured by the imaging unit, and blur amount data acquired by the first acquisition unit Are sequentially stored in the storage means, and the minimum blur image selection means for selecting image data corresponding to the blur amount data with the smallest blur amount among the blur amount data stored in the storage means, and the minimum blur And a second output means for outputting the image data selected by the image selection means, so that the structure is simple, the size can be reduced, and the clean image data with less blurring without cost. Can be obtained.

  According to the invention of the blur detection system apparatus according to claim 5, the imaging device includes an instruction unit for a user to stop imaging of the subject by the imaging unit, and the minimum blur image selection unit is the instruction unit. When the instruction to stop imaging of the subject is issued by the control unit, storage of the image data captured by the imaging unit and the blur amount data detected by the detection unit and acquired by the first acquisition unit is prohibited. Therefore, it is possible to obtain the image data with the smallest blur amount among the image data that the user wants.

  According to the blur detection system apparatus of claim 6, the minimum blur image selection unit detects the image data captured by the imaging unit at the same time as the time when the image data was captured. Since the shake amount data detected by the means and acquired by the first acquisition means are associated with each other and stored in the storage means, an image with a small amount of shake can be obtained with high accuracy.

  According to the invention of the blur detection system apparatus according to claim 7, the imaging apparatus includes a selection unit for a user to select image data, and the minimum blur image selection unit selects the image data by the selection unit. In such a case, since the selected image data is selected, an image can be obtained if the user wants.

  According to the invention of the blur detection system apparatus according to claim 8, the imaging apparatus includes an image of a plurality of image data stored in the storage unit and blur amount data stored in association with the image data. Since the first display control means for displaying the blur amount based on the image on the display means is provided, the user can visually recognize the stored image and the blur amount of the image, and the image that he / she wants in the image. Can be obtained.

  According to the invention of the blur detection system apparatus according to claim 9, there is provided a blur detection system apparatus comprising an imaging device and a blur detection device capable of inputting / outputting data between the imaging device and the blur detection device. Comprises: a shake detecting means for detecting a shake amount; and a first output means for outputting shake amount data of the shake amount detected by the shake detecting means, wherein the imaging device picks up an image of the subject. And a first acquisition means for acquiring the blur amount data output by the first output means, an instruction means for the user to instruct photographing, and an instruction for photographing by the instruction means, A photographing control means for photographing a still image of a subject by reading out image data picked up by the image pickup means after performing exposure, and detected by the detection means during exposure by the photographing control means. It is determined whether or not the blur amount based on the blur amount data acquired by the first acquisition unit is smaller than a predetermined blur amount, and it is determined that the blur amount based on the acquired blur amount data is not smaller than the predetermined blur amount. The control means for forcibly terminating the exposure by the photographing control means and reading the image data picked up by the image pickup means, and outputting the image data read by the control means. Since the second output means is provided, the structure is simple and the size can be reduced, and an image with less blur can be obtained without cost.

  According to the invention of the blur detection system apparatus of the tenth aspect, since the control means ends the exposure by closing the shutter, the exposure can be surely ended and an image with less blur is obtained. be able to.

  According to the invention of the blur detection system apparatus of claim 11, the image pickup apparatus includes exposure correction means for correcting exposure of the image data, and the exposure correction means is for the image data read by the control means. The exposure of the image data is corrected in accordance with the underexposure amount, and the second output means outputs the image data that has been exposure-corrected by the exposure correction means. Images that are not insufficient can be obtained.

  According to the shake detection system apparatus of claim 12, the second output means has a shake amount based on the shake amount data acquired by the control means by the first acquisition means smaller than a predetermined shake amount. When the exposure by the photographing control unit is finished without being judged as being not, the image data read by the photographing control unit is output, so that the image is less blurred and is not underexposed. Can be obtained, and a beautiful image can be obtained.

  According to the invention of the blur detection system apparatus of claim 13, the image pickup apparatus comprises recording control means for recording the image data output by the second output means on the recording means. The captured image data can be saved.

  According to the invention of the blur detection system apparatus according to claim 14, the blur detection apparatus includes a second acquisition unit that acquires the image data output by the second output unit, and the second acquisition unit. Since the recording control means for recording the acquired image data in the recording means is provided, the captured image data can be stored.

  According to the invention of the blur detection system apparatus according to claim 15, the image pickup device is a blur amount based on an image of the image data picked up by the image pickup means and a shake amount data acquired by the first acquisition means. Since the second display control means is displayed on the display means, the user can easily visually recognize how much the imaged image data is blurred.

According to the invention of the shake detection system apparatus of claim 16, there is provided a shake detection system apparatus comprising an image pickup apparatus and a shake detection apparatus capable of inputting / outputting data between the image pickup apparatus. Imaging means for imaging the subject; first timing means for timing the time; photography control means for taking a still image of the subject by reading out the image data captured by the imaging means after performing exposure; Output means for outputting the photographing time measured by the first time measuring means and the image data read by the photographing control means, and the shake detecting device detects the shake amount. An acquisition means for acquiring the image data and shooting time output by the output means, and a blur detected by the shake detection means at the shooting time acquired by the acquisition means. A blur correction unit that corrects image blur of the image data acquired by the acquisition unit based on amount data; and a recording control unit that records the image data corrected by the blur correction unit in the recording unit. Therefore, if it is an imaging device with a timekeeping function that can be input / output to / from the shake detection device, it is easy to input / output data to / from the shake detection device even if it does not have a built-in camera shake correction function. It is possible to correct the blurring of the image picked up.
Further, the structure is simple and the size can be reduced, and the cost is not increased.

  According to the invention of the blur detection system apparatus of claim 17, the blur detection apparatus comprises: a second timing unit that counts time; a blur amount data detected by the blur detection unit; and the second timing unit. Storage control means for sequentially storing the time counted by the means in the storage means, and reading means for reading out blur amount data corresponding to the photographing time acquired by the acquisition means from the storage means. The correcting unit corrects the image blur of the image data acquired by the acquiring unit based on the blur amount data corresponding to the shooting time read by the reading unit, so that the image blur can be performed with high accuracy. It can be corrected.

  According to the shake detection system apparatus of claim 18, the second time measuring means is synchronized with the first time measuring means, so that it is possible to correct the image shake with high accuracy. it can.

  According to the blur detection system apparatus of claim 19, the photographing time measured by the first time measuring means is a time from an exposure start time to an exposure end time by the photographing control means. Therefore, the accuracy of still image blur correction can be further increased, and a beautiful image can be obtained.

  According to the invention of the shake detection system device of claim 20, the shake detection device has a shake amount based on the shake amount data detected by the detection means at a photographing time acquired by the acquisition means from a predetermined shake amount. Judgment means for judging whether or not the blur is small, and the blur correction means determines that the blur amount based on the blur amount data detected by the detection means at the photographing time is not smaller than a predetermined blur amount by the determination means. In this case, image blur of the image data acquired by the acquisition unit is corrected based on the detected blur amount data, and the recording control unit is configured to correct the image data corrected by the blur correction unit. Therefore, when the blur amount of the image is larger than the predetermined blur amount, blur correction can be performed and a beautiful image can be obtained.

  According to the invention of the blur detection system apparatus of claim 21, the correction means determines that the blur amount based on the blur amount data detected by the detection means at the photographing time is smaller than a predetermined blur amount by the determination means. In such a case, correction of image blur of the image data acquired by the acquisition unit is prohibited, and the recording control unit records the image data acquired by the acquisition unit on the recording unit. When the amount of blur is small, the processing burden associated with blur correction can be reduced.

  According to the image pickup apparatus of the twenty-second aspect, the acquisition unit that acquires the blur amount data detected by the external device that detects the blur amount, the imaging unit that images the subject, and the blur acquired by the acquisition unit. Since it includes a blur correction unit that corrects blurring of an image of the image data captured by the imaging unit based on the amount data, and an output unit that outputs the image data corrected by the blur correction unit. The structure is simple and the size can be reduced, and blurring of the captured image can be corrected without cost.

  According to an invention of an image pickup apparatus according to claim 23, the image pickup apparatus further includes a shooting control unit that controls shooting of a still image of a subject by the shooting unit, and the blur correction unit is configured to capture the external device during the shooting of a still image by the shooting control unit. Based on the blur amount data detected by the acquisition unit and the blur of the image data obtained by the still image shooting by the shooting control unit is corrected, the blur of the captured still image is corrected. Therefore, the correction accuracy can be increased, and a beautiful image can be obtained.

  According to the invention of the imaging device according to claim 24, the imaging control unit performs still image shooting of a subject by reading out image data obtained by the imaging unit after performing exposure, and the acquisition unit includes: The blur amount data detected by the external device during exposure by the shooting control unit is acquired, and the blur correction unit is configured to capture a still image by the shooting control unit based on the blur amount data acquired by the acquisition unit. Since the blur of the image of the image data obtained by the above is corrected, the accuracy of still image blur correction can be further increased, and a beautiful image can be obtained.

  According to the image pickup apparatus of the twenty-fifth aspect, an acquisition unit that acquires blur amount data detected by an external device that detects a blur amount, an imaging unit that images a subject, and an image captured by the imaging unit. The image and the blur amount data acquired by the acquisition unit are sequentially associated with each other and stored in the storage unit, and the image corresponding to the blur amount data having the smallest blur amount among the blur amount data stored in the storage unit. Since the minimum blur image selection means for selecting data and the output means for outputting the image data selected by the minimum blur image selection means are provided, the structure can be simplified and the size can be reduced, and the cost can be reduced. It is possible to obtain beautiful image data with little blurring without applying it.

  According to the invention of the imaging device according to claim 26, the image processing apparatus further comprises an instruction unit for a user to stop the imaging of the subject by the imaging unit, and the minimum blur image selection unit cancels the imaging of the subject by the instruction unit. When there is an instruction, since the image data captured by the imaging unit and the blur amount data detected by the external device and acquired by the acquisition unit are included, a means for prohibiting storage is included. It is possible to obtain image data with the least amount of blur among the image data that the user wants.

  According to the invention of claim 27, the minimum blur image selecting means is detected at the same time as the image data taken by the imaging means and the time when the image data was taken. Since the blur amount data acquired by the acquisition unit is associated with and stored in the storage unit, an image with a small amount of blur can be obtained with high accuracy.

  According to the invention of the imaging device according to claim 28, the image processing apparatus further comprises a selection unit for a user to select image data, and the minimum blur image selection unit selects the image data when the selection unit selects the image data. Since the selected image data is selected, an image can be obtained if the user wants it.

  According to the image pickup apparatus of the twenty-ninth aspect, an image of a plurality of image data stored in the storage unit and a blur amount based on the blur amount data stored in association with the image data are displayed. Since the first display control means to be displayed on the means is provided, the user can visually recognize the stored image and the blur amount of the image, and can obtain the desired image.

  According to the image pickup apparatus of the thirty-third aspect, the acquisition unit that acquires the blur amount data detected by the external device that detects the blur amount, the image pickup unit that images the subject, and the instruction unit that instructs the user to perform shooting When the instruction means instructs to shoot, the exposure control means for taking a still image of the subject by reading out the image data picked up by the image pickup means after exposure, and the shooting control means It is determined whether or not a blur amount based on the blur amount data detected by the external device during exposure and acquired by the acquisition unit is smaller than a predetermined blur amount, and the blur amount based on the acquired blur amount data is determined to be a predetermined blur amount. When it is determined that the amount is not smaller than the amount, the exposure by the photographing control unit is forcibly terminated and the image data captured by the imaging unit is read out. The control means for controlling the output and the output means for outputting the image data read by the control means are provided, so that the structure can be simplified and the size can be reduced, and the blurring can be achieved without cost. A few images can be obtained.

  According to the image pickup apparatus of the thirty-first aspect, since the control means ends the exposure by closing the shutter, the exposure can be surely ended and an image with less blur can be obtained. it can.

  According to an invention of an imaging apparatus according to a thirty-second aspect, the exposure correction means for correcting exposure of image data is provided, the exposure correction means based on the underexposure amount of the image data read by the control means. Since the exposure of the image data is corrected and the output means outputs the image data that has been exposure-corrected by the exposure correction means, it is possible to obtain an image with little blurring and no underexposure.

  According to the imaging device of the thirty-third aspect, the output unit does not determine that the blur amount based on the blur amount data acquired by the acquisition unit by the control unit is smaller than a predetermined blur amount, and When the exposure by the photographing control means is completed, the image data read by the photographing control means is output, so that an image with little blur and no underexposure can be obtained, and the image is beautiful. An image can be obtained.

  According to the 34th aspect of the present invention, since the recording control means for recording the image data output by the output means on the recording means is provided, the imaged image data can be stored.

  According to the invention of the imaging device according to claim 35, the display unit displays an image based on the image data captured by the imaging unit and a blur amount based on the blur amount data acquired by the acquisition unit. Since the second display control means is provided, the user can easily visually recognize how much the captured image data is blurred.

According to the invention of the external recording medium according to claim 36, the blur detection unit for detecting the blur amount, the acquisition unit for acquiring the still image data and the shooting time output from the imaging device, and the acquisition unit Correction means for correcting image blur of the image data acquired by the acquisition means based on shake amount data detected by the shake detection means at the photographing time, and recording means for recording the image data corrected by the shake correction means In the case of an imaging device with a clock function, it is possible to input / output data to / from the imaging device so that the image captured by the imaging device can be blurred. Can be corrected.
Further, the structure is simple and the size can be reduced, and the cost is low. Even if the image is captured by an ordinary imaging device, a blur-corrected image is recorded.

  According to the invention of the external recording medium according to claim 37, the time measuring means for measuring time, the blur amount data detected by the shake detecting means and the time measured by the time measuring means are associated and stored in the storage means. Storage control means, and reading means for reading out blur amount data corresponding to the shooting time acquired by the acquisition means from the storage means, wherein the blur correction means is the shooting time read by the reading means Since the image blur of the image data acquired by the acquisition unit is corrected based on the blur amount data corresponding to the image blur, the image blur can be corrected with high accuracy.

  According to the external recording medium of the present invention, the photographing time is a time from an exposure start time to an exposure end time for obtaining still image data output from the image pickup apparatus. Further, the accuracy of still image blur correction can be further increased, and a beautiful image can be obtained.

  According to the invention of the external recording medium according to claim 39, it is determined whether or not a blur amount based on the blur amount data detected by the detecting unit at a photographing time acquired by the acquiring unit is smaller than a predetermined blur amount. And a blur correction unit that detects when the blur amount based on the blur amount data detected by the detection unit at the photographing time is not smaller than a predetermined blur amount. Since the blur of the image of the image data acquired by the acquisition unit is corrected based on the blur amount data, the recording control unit records the image data corrected by the blur correction unit on the recording unit. When the blur amount of the image is larger than the predetermined blur amount, blur correction can be performed and a beautiful image can be obtained.

  According to the invention of the external recording medium according to claim 40, the correcting means determines that the blur amount based on the blur amount data detected by the detecting means at the photographing time is smaller than a predetermined blur amount by the determining means. In this case, correction of image blur of the image data acquired by the acquisition unit is prohibited, and the recording control unit records the image data acquired by the acquisition unit on the recording unit. When the amount is small, it is possible to reduce the processing burden associated with blur correction.

  According to the program of the present invention, the image pickup apparatus of the present invention can be realized by being read by a digital camera, a personal computer or the like.

  According to the program of the present invention, the image pickup apparatus of the present invention can be realized by being read by a digital camera, a personal computer or the like.

  According to the program of the present invention, the image pickup apparatus of the present invention can be realized by being read by a digital camera, a personal computer or the like.

  According to the invention of the program described in claim 44, the external recording medium of the present invention can be realized by reading it into a recording medium incorporating an angular velocity sensor or the like capable of detecting blur.

Hereinafter, the present embodiment will be described in detail with reference to the drawings.
[First embodiment]
A. Configuration of Blur Detection System Device Since the blur detection system device of the present invention is composed of a memory card and a digital camera, it will be described separately for a memory card and a digital camera.

A-1. Configuration of Memory Card FIG. 1 is a block diagram showing an electrical schematic configuration of a memory card 1 that implements the shake detection system apparatus of the present invention.
The memory card 1 includes a Yaw direction camera shake sensor 2 (hereinafter referred to as sensor 2), a Pitch (pitch) direction camera shake sensor 3 (hereinafter referred to as sensor 3), a high-pass filter (HPF) 4, a high-pass filter (HPF) 5, and an amplifier. (AMP) 6, amplifier (AMP) 7, low-pass filter (LPF) 8, low-pass filter (LPF) 9, A / D converter 10, A / D converter 11, high-pass filter 12, high-pass filter 13, phase compensation unit 14, a phase compensation unit 15, an integrator 16, an integrator 17, a control unit 18, a memory 19, a connection terminal 20, and a drive circuit 21.

The sensors 2 and 3 are angular velocity sensors such as a vibration gyro, the sensor 2 detects an angular velocity in the Yaw direction, and the sensor 3 detects an angular velocity in the Pitch direction.
The sensor 2 sequentially outputs the detected angular velocity signal to the high-pass filter 4, and the sensor 3 sequentially outputs the detected angular velocity signal to the high-pass filter 5. The sensor 2 and the sensor 3 can detect the shake amount in the Yaw direction and the shake in the Pitch direction.
The high-pass filter 4 and the high-pass filter 5 block the DC component of the input angular velocity signal and output only the AC component to the amplifier 6 and the amplifier 7, respectively.

The amplifiers 6 and 7 amplify the input angular velocity signals and output the amplified signals to the low-pass filter 8 and the low-pass filter 9, respectively.
The low-pass filter 8 and the low-pass filter 9 cut off frequency components of a certain frequency or more from the input angular velocity signals and output them to the A / D converter 10 and the A / D converter 11, respectively.

The A / D converter 10 and the A / D converter 11 convert the input angular velocity signal into a digital signal and output the digital signal to the high-pass filter 12 and the high-pass filter 13, respectively.
The high-pass filter 12 and the high-pass filter 13 block the low frequency component of the input angular velocity signal and output it to the phase compensation unit 14 and the phase compensation unit 15, respectively.
The phase compensator 14 and the phase compensator 15 compensate the phase of the angular velocity signal of the input digital signal and output it to the integrator 16 and the integrator 17, respectively.

The integrator 16 and the integrator 17 integrate the angular velocity signal of the input digital signal, respectively, obtain an angle signal, and output it to the control unit 18.
The control unit 18 is a one-chip microcomputer that controls each unit of the memory card, and also includes a clock circuit that measures time.
The memory 19 is a recording medium for recording image data captured by the digital camera, and stores a program necessary for controlling each part of the memory card 1 by the control unit 18 and data necessary for controlling each part. Yes.
The drive circuit 21 is a circuit that drives the sensor 2 and the sensor 3.

A-2. Configuration of Digital Camera FIG. 2 is a block diagram showing a schematic electrical configuration of a digital camera 31 that implements the shake detection system apparatus of the present invention.
The digital camera 31 includes a photographing lens 32, a lens driving block 33, a diaphragm shutter 34, a CCD 35, a TG (timing generator) 36, a unit circuit 37, a DRAM 38, a memory 39, a CPU 40, an image display unit 41, a key input unit 42, an external unit. A communication I / F 43, a strobe drive unit 44, a strobe light emitting unit 45, and a card I / F 46 are provided. The memory card 1 is detachably connected to a card slot of the main body of the digital camera 31 (not shown). The

  The taking lens 32 includes a focus lens and a zoom lens (not shown), and a lens driving block 33 is connected thereto. The lens drive block 33 includes a focus motor and a zoom motor that drive a focus lens and a zoom lens (not shown) in the optical axis direction, and a focus that drives the focus motor and the zoom motor in the optical axis direction according to a control signal from the CPU 40, respectively. It consists of a motor driver and zoom motor driver.

The aperture / shutter 34 includes a drive circuit (not shown), and the drive circuit operates the aperture / shutter in accordance with a control signal sent from the CPU 40. The aperture / shutter functions as an aperture and a shutter.
The diaphragm is a mechanism that controls the amount of light that enters from the photographic lens 32, and the shutter is a mechanism that controls the time that light is applied to the CCD 35, and the time that light is applied to the CCD 35 (exposure). Time) varies depending on the shutter opening / closing speed (shutter speed). The amount of exposure can be determined by this aperture and shutter speed.

The CCD 35 (imaging means) converts the light of the subject projected through the photographing lens 32 and the diaphragm / shutter 34 into an electrical signal and outputs it as an imaging signal to the unit circuit 37. The CCD 35 is driven according to a timing signal having a predetermined frequency generated by the TG 36. A unit circuit 37 is connected to the TG 36.
The unit circuit 37 includes a CDS (Correlated Double Sampling) circuit that holds the imaging signal output from the CCD 35 by correlated double sampling, an AGC (Automatic Gain Control) circuit that performs automatic gain adjustment of the imaging signal after the sampling, The A / D converter converts the analog image pickup signal after the automatic gain adjustment into a digital signal. The image pickup signal of the CCD 5 is sent to the CPU 40 as a digital signal through the unit circuit 37.

  The CPU 40 performs image processing (pixel interpolation processing, γ correction, generation of luminance and color difference signals, white balance processing, exposure correction processing, etc.) of image data sent from the unit circuit 7, blur correction processing, and compression / decompression of image data. It is a one-chip microcomputer that has a function of performing processing (for example, compression / decompression in JPEG format) and the like, and controls each part of the digital camera 31, and also includes a clock circuit that measures time.

  The DRAM 38 is used as a buffer memory for temporarily storing image data sent to the CPU 40 after being imaged by the CCD 35 and also as a working memory for the CPU 40.

The image display unit 41 includes a color LCD and its drive circuit, and displays the subject imaged by the CCD 35 as a through image when in a shooting standby state, and is read out from the memory card 1 and decompressed when reproducing a recorded image. The recorded image is displayed.
The key input unit 42 includes a plurality of operation keys such as a shutter button, a mode key, a SET key, and a cross key, and outputs an operation signal corresponding to the user's key operation to the CPU 40.

The external communication I / F 43 performs data input / output with an external electronic device (for example, a personal computer), and enables input / output in accordance with various interface standards such as the USB (Universal Serial Bus) standard and the IEEE 1394 standard. It can be connected to electronic devices such as personal computers that can input and output data according to these standards.
In addition, image data may be input / output to / from an external electronic device by infrared communication based on the IrDA standard or wireless communication based on the Bluetooth standard.

  The strobe driving unit 44 drives the strobe light emitting unit 45 to flash according to the control signal of the CPU 40, and the strobe light emitting unit 45 causes the strobe to flash. The CPU 40 determines whether or not the shooting scene is dark by a photometric circuit (not shown), and if it is determined that the shooting scene is dark and if shooting is to be performed (when the shutter button is pressed), the CPU 40 Send a control signal.

  The memory 39 stores a program necessary for controlling each part of the digital camera 31 by the CPU 40 and data necessary for controlling each part. The CPU 40 performs processing according to this program.

B. Operation of the shake detection system apparatus The operation of the shake detection system apparatus in the first embodiment will be described.

B-1. Operation of Memory Card 1 First, the operation of the memory card 1 of the shake detection system apparatus will be described with reference to the flowchart of FIG.
When the user inserts the memory card 1 into the card slot of the digital camera 31 so that the memory card 1 and the digital camera 31 are connected and the digital camera 31 is turned on, the control unit 18 The identification information is output to the digital camera 31. That is, the identification information is sent to the CPU 40 via the connection terminal 20 and the card I / F 46 (step S1). The identification information of the memory card 1 is recorded in advance in the memory built in the control unit 18 or the memory 19 of the memory card 1.

  When the memory card 1 and the digital camera 31 are connected and the power of the digital camera 31 is turned on, the control unit 18 periodically reads the clock signal and the synchronization signal of the clock circuit of the CPU 30 and the clock of the CPU 30. The circuit and the clock circuit of the control unit 18 are synchronized. That is, the time measured by the clock circuit of the CPU 30 and the time counted by the clock circuit of the control unit 18 are made the same.

Next, the control unit 18 determines whether or not a control signal instructing to perform blur detection is sent from the CPU 40 of the digital camera 31 via the card I / F 46 and the connection terminal 20 (step S2).
If it is determined in step S2 that a control signal instructing to perform blur detection has not been sent, the process stays in step S2 until it is sent, and if it is determined that a control signal instructing to perform blur detection has been sent. Then, the control unit 18 drives the sensor 2 and the sensor 3 by sending a control signal to the drive circuit 21, and starts detection of the blur amount by the sensor 2 and detection of the blur amount by the sensor 3 (step S3).

When the detection of the blur amount is started, the control unit 18 detects the blur amount (angle signal) in the Yaw direction and the blur amount (angle signal) in the Pitch direction detected by the sensors 2 and 3 and sent to the control unit 18. ) Is output to the CPU 40 via the connection terminal 20 and the card I / F 46 of the digital camera 31 (step S4).
Next, the control unit 18 determines whether still image data has been sent from the digital camera 31 via the card I / F 46 and the connection terminal 16 (step S5).

If it is determined in step S5 that still image data has not been sent, the process returns to step S4. That is, the control unit 18 outputs the blur amount detected until the still image data is sent from the digital camera 31 to the digital camera 31 to the CPU 40.
On the other hand, if it is determined in step S5 that still image data has been sent, the control unit 18 causes the memory 19 to record still image data sent from the digital camera 31.

B-2. Operation of Digital Camera 31 Next, the operation of the digital camera 31 of the shake detection system apparatus will be described with reference to the flowcharts of FIGS.
When the power of the digital camera 31 is turned on by the user's operation of the key input unit 42, the CPU 40 determines whether or not a memory card is attached (step S11).

  If it is determined in step S1 that the memory card is not attached, the CPU 40 proceeds to other processing. If it is determined in step S1 that the memory card is attached, the CPU 40 acquires the identification information output from the memory card. (Step S12). Although the identification information output from the memory card is acquired, the CPU 40 may read and acquire the identification information recorded on the memory card.

When the identification information of the memory card is acquired, the CPU 40 determines whether or not the memory card attached is the memory card 1 with a built-in sensor function of the present invention based on the acquired identification information (step S13). .
If it is determined in step S13 that the memory card 1 is not a sensor function built-in memory according to the present invention, the process proceeds to other processing. In this case, the mounted memory card is used as a normal memory card. When the identification information is not output from the memory card or when the CPU 40 cannot acquire the identification information from the memory card, it is determined that the memory card 1 is not a sensor function built-in memory according to the present invention. May be.

On the other hand, if it is determined in step S13 that the memory card 1 has a sensor function built-in according to the present invention, the CPU 40 determines whether a program corresponding to the memory card 1 with a built-in sensor function is installed (step S14). ).
If it is determined in step S14 that the corresponding program is not installed, the process proceeds to other processing. In this case, the memory card 1 with a built-in sensor function is used as a normal memory card. If the corresponding program is not installed, the user connects the digital camera 31 and a personal computer (not shown) using a USB cable or the like, and downloads the program from the personal computer. Can be installed.

On the other hand, if it is determined in step S14 that the corresponding program is installed, the CPU 40 activates the program (step S15).
When the program is activated, the CPU 40 determines whether or not the current mode is set to the shooting mode by the user's operation of the key input unit 42 (step S16). This determination is made based on whether or not an operation signal corresponding to the shooting mode setting has been sent from the key input unit 42.
If it is determined in step S16 that the shooting mode is not set, the process stays in step S16 until the shooting mode is set. If it is determined that the shooting mode is set, the CPU 40 shifts to the shooting mode of the present invention. That is, the process proceeds to the flowchart of the shooting mode in FIG.

When the processing proceeds to step S21 in FIG. 5, the CPU 10 sends a control signal instructing to perform blur detection to the control unit 18 of the memory card 1 via the card I / F 46 and the connection terminal 20. Then, as described above, the control unit 18 sends a control signal to the drive circuit 21 to drive the sensor 2 and the sensor 3 to start detection of the blur amount by the sensor 2 and detection of the blur amount by the sensor 3.
Next, the CPU 40 starts imaging of the subject by the CCD 35 at a predetermined frame rate (fixed cycle of 1/30 seconds), performs image processing on the captured image data, and stores it in the buffer memory (DRAM 38). The stored image data is displayed on the image display unit 12, so-called through image display is performed (step S22).

Next, the CPU 40 acquires the blur amount (angle signal) in the Yaw direction and the blur amount (angle signal) in the Pitch direction output from the control unit 18 of the memory card 1 via the connection terminal 20 and the card I / F 46. The data is stored in the buffer memory (step S23).
Next, the CPU 40 displays the shake amount (angle signal) in the Yaw direction detected by the stored sensor 2 and the shake amount (angle signal) in the Pitch direction detected by the sensor 3 together with a through image of the subject. 23 is displayed (step S24).

FIG. 7 shows a display example of the blur amount in the Yaw direction and the blur amount in the Pitch direction.
As shown in FIG. 7 (a), along with a through image (female person) of the subject imaged by the CCD 5, a history of blur amount in the Yaw direction is continuously displayed in the vertical direction on the right side of the image display unit 41, and at the bottom. Is configured to continuously display a history of blur amount in the pitch direction in the horizontal direction.

  Regarding the display of the blur amount in the Yaw direction, the blur amount displayed at the bottom represents the current blur amount in the Yaw direction, and the blur amount displayed above represents the past blur amount. Yes. In addition, regarding the display of the blur amount in the pitch direction, the blur amount displayed on the rightmost represents the blur amount in the current pitch direction, and the blur amount displayed on the left indicates the past blur amount. Represents. That is, the blur amount is continuously displayed in time series. Thereby, the user can easily recognize how the camera shake is occurring.

Further, as shown in FIG. 7B, along with the through image (female person) of the subject imaged by the CCD 5, the history of the blur amount in the Yaw direction and the blur amount in the Pitch direction is displayed in the horizontal direction at the bottom of the image display unit 41. May be displayed continuously. At this time, a discrimination display is performed so that the blur amount in the Yaw direction and the blur amount in the Pitch direction can be identified.
For both the Yaw direction and Pitch direction blur amounts, the blur amount displayed on the right represents the current blur amount, and the blur amount displayed on the left displays the past blur amount.

Next, the CPU 40 determines whether or not the shutter button is half-pressed by the user (step S25). This determination is made based on whether or not an operation signal corresponding to the half-pressing operation of the shutter button has been sent from the key input unit 42.
If it is determined in step S25 that the shutter button is not half-pressed, the process returns to step S22. If it is determined in step S25 that the shutter button is half-pressed, the CPU 40 determines whether the currently set shooting mode is the blur reduction shooting mode. It is determined whether or not (step S26). It should be noted that the user can switch between setting of the blur reduction shooting mode and setting of the blur correction shooting mode by operating the key input unit 42 until the shutter button is half-pressed.

<In blur reduction shooting mode>
If it is determined in step S26 that the currently set shooting mode is the blur reduction shooting mode, the CPU 40 outputs the blur amount (angle signal) in the Yaw direction and the blur in the Pitch direction output from the control unit 18 of the memory card 1. The amount (angle signal) is acquired through the connection terminal 20 and the card I / F 46 and stored in the buffer memory (step S27).
Next, the CPU 40 temporarily stores the image data picked up by the CCD 35 in the buffer memory in association with the angle signals in the Yaw direction and the Pitch direction acquired in step S27 (step S28). At this time, the angle signals in the Yaw direction and the Pitch direction detected at the same time or substantially the same time as when the image data to be stored are captured are stored in association with each other.

Next, the CPU 40 causes the image display unit 41 to display the image data picked up by the stored CCD 35 and the shake amount in the Yaw direction and the shake amount in the Pitch direction stored in association with the image data (step S29). .
Next, the CPU 40 determines whether or not the shutter button has been fully pressed by the user (step S30). This determination is made based on whether or not an operation signal corresponding to full depression of the shutter button has been sent from the key input unit 42.
If it is determined in step S30 that the shutter button has not been fully pressed, the CPU 40 determines whether or not the image data and the angle signal are stored in the full buffer memory (step S31).

If it is determined in step S31 that the image data and the angle signal are stored in the full buffer memory, the CPU 40 determines the oldest image data among the image data stored in the buffer memory and the image data. The angle signal stored in association is deleted from the buffer memory (step S32), and the process returns to step S27.
On the other hand, if it is determined in step S31 that the image data and the angle signal are not stored in the buffer memory, the process returns to step S27.

  That is, the image data picked up by the CCD 35 is temporarily stored in the buffer memory sequentially until the shutter button is pressed halfway and then when the buffer memory is full, it is stored in the buffer memory. The operation of erasing the oldest image data among the existing image data and recording the newly captured image data is repeated. At this time, it goes without saying that an angle signal is associated with the stored image data and recorded in the buffer memory. When the buffer memory is full, the oldest image data is erased and newly captured image data is recorded. However, the oldest image data is not erased and the newly captured image data is recorded. The data may be stored by overwriting the oldest image data.

  On the other hand, if it is determined in step S30 that the shutter button has been fully pressed by the user, the image data with the smallest blurring amount among the plurality of image data stored in the buffer memory is compressed into the JPEG format to obtain still image data. Is output to the memory card 1 (step S33). As described above, the control unit 18 of the memory card 1 records the transmitted still image data in the memory 19. The image data with the smallest blur amount may be, for example, image data with the smallest sum of the blur amount in the Yaw direction and the blur amount in the Pitch direction, or the blur amount in the Yaw direction or the Pitch direction. The image data with the smallest blur amount may be used.

The image data to be recorded is the image data with the smallest blurring amount, but a plurality of image data may be arbitrarily selected and recorded.
Alternatively, a plurality of image data and blur amounts stored in the buffer memory may be displayed and the user may select image data to be recorded. At this time, the number of image data that can be selected may be plural. That is, a plurality of image data may be recorded.

<In the image stabilization shooting mode>
On the other hand, if it is determined in step S26 that the camera mode is not the blur reduction shooting mode, it is determined that the camera is in the blur correction shooting mode, and the process proceeds to step S34 in FIG. 6, and the CPU 40 performs AE processing and AF processing according to the program stored in the memory 39. I do. This AE process refers to automatically setting an appropriate aperture and shutter speed to set the exposure amount. In addition, the AF processing is to automatically move the focus lens so that the subject is in focus. Here, a contrast detection method is adopted. Since the AF process using the contrast detection method is an AF process used in many digital cameras, a description thereof is omitted here.

Next, the CPU 40 acquires the blur amount (angle signal) in the Yaw direction and the blur amount (angle signal) in the Pitch direction output from the control unit 18 of the memory card 1 via the connection terminal 20 and the card I / F 46. The data is stored in the buffer memory (step S35).
Next, the CPU 40 displays the shake amount (angle signal) in the Yaw direction detected by the stored sensor 2 and the shake amount (angle signal) in the Pitch direction detected by the sensor 3 together with a through image of the subject. 23 (step S36).

Next, the CPU 40 determines whether or not the shutter button has been fully pressed by the user (step S37).
If it is determined in step S37 that the shutter button has not been fully pressed, the process returns to step S35. If it is determined in step S37 that the shutter button has been fully pressed, exposure is started (step S38).
Next, the CPU 40 acquires the blur amount in the Yaw direction and the Pitch direction output from the memory card 1 and stores them in the buffer memory (step S39).

Next, the CPU 40 determines whether or not the exposure is finished (step S40). This determination is made based on whether or not the exposure time (determined by the shutter speed) set by the AE process in step S24 has elapsed.
If it is determined in step S40 that the exposure has not ended, the process returns to step S39. If it is determined that the exposure has ended, the CPU 40 closes the shutter and reads out still image data captured by the CCD 35 and stores it in the buffer memory (step S40). S41).

Then, based on the blur amount acquired during the still image shooting process, the stored still image data is subjected to the blur amount correction process (step S42). The blur amount acquired during the still image shooting process refers to the blur amount acquired in step S39. This blur correction process will be described later.
Next, the still image data subjected to the blur correction process is compressed into the JPEG format and output to the memory card 1 (step S43). Then, the control unit 18 of the memory card 1 records the transmitted still image data in the memory 19.

C. Next, the blur correction process will be described.
There are various methods of blur correction processing. As an example, a method of blur correction processing will be described.
First, an outline of the blur correction method will be described.
It is assumed that the original image data without blur is i (x, y), the degradation component causing blur is p (x, y), and the degraded image, that is, the image data with blur is g (x, y). Then, the relational expression of Formula 1 is established.

(Equation 1)
g (x, y) = p (x, y) * i (x, y)
* Convolution operation (convolution integration)

  Therefore, if the degradation component p (x, y) is estimated, the image data i (x, y) without blur can be restored by deconvolution operation (deconvolution integration). That is, since the obtained still image data can be regarded as a deteriorated image g (x, y), image data i (x, y) without blurring due to the deteriorated image g (x, y) and the deteriorated component p (x, y). ).

Next, the blur correction process will be specifically described.
First, when the relational expression of Expression 1 is converted to the frequency axis by Fourier transformation or the like, the relational expression shown in Expression 2 is obtained.

(Equation 2)
G [u, v] = P [u, v] · I [u, v]
The convolution operation is a multiplication of Fourier transforms on the frequency axis.

  When the relational expression of Expression 2 is rewritten into the relational expression of I [u, v] equal, the relational expression shown in Expression 3 is obtained.

(Equation 3)
I [u, v] = G [u, v] / P [u, v]
The deconvolution operation is a division between Fourier transforms on the frequency axis.

  Also, G [u, v] after Fourier transform of g (x, y) has a relational expression as shown in Equation 4.

  Further, i (x, y) after inverse Fourier transform of I [u, v] has a relational expression as shown in Equation 5.

  P [u, v] has a relational expression as shown in Equation 6.

  Θ and L in Equation 6 can be obtained based on the blur amount in the Yaw direction and the blur amount in the Pitch direction detected by the sensors 2 and 3. This θ represents the direction angle of blur, and L represents the distance of blur. Hereinafter, how to obtain θ and L will be described.

FIG. 8A is a diagram illustrating a relationship graph between time and a blur amount in the Yaw direction detected by the sensor 2 and a blur amount in the Pitch (pitch) direction detected by the sensor 3. The horizontal axis represents the time axis, and the vertical axis represents the shake amount.
It can be seen that the yaw blur amount and the pitch blur amount change with time. A place with a white circle indicates the amount of blur when the exposure starts, and a place with a black circle indicates the amount of blur when the exposure ends.

  FIG. 8B shows the relationship between the amount of blur in the yaw direction and the amount of pitch in the pitch direction from the relationship graph between the amount of blur in the yaw direction and the amount of blur in the pitch direction detected with the passage of time shown in FIG. This is a graph converted to the relationship with the amount of blur. In addition, the arrow direction in FIG. 8B indicates the passage of time, the white circle represents the amount of blur in the yaw direction and the amount of blur in the pitch direction when the exposure is started, and the black circle is when the exposure is completed. Represents the amount of shake in the yaw direction and the amount of shake in the pitch direction.

FIG. 8C is a diagram in which the blur amount in the yaw direction and the blur amount in the pitch direction detected from the start of exposure to the end of exposure in FIG. 8B are extracted. A thick arrow extending from the position of the blur amount in the yaw direction and the pitch direction at the start of exposure (the position of the white circle) toward the position of the blur amount in the yaw direction and the pitch direction at the end of the exposure (the position of the black circle) The outline of the shift of the blur amount from the start of exposure to the end of exposure is shown.
Then, the direction angle θ of the blur amount and the distance L of the blur amount can be obtained based on an arrow (vector) indicating an outline of the shift of the blur amount from the start of exposure to the end of exposure.
It should be noted that a plurality of small arrows drawn on the approximate curve in FIG. 8C represents a shift in the shake amount in the yaw direction and the shake amount in the pitch direction. That is, the locus of the amount of blur in the yaw direction and the pitch direction from the start of exposure to the end of exposure shown in FIG.

  Then, G [u, v] obtained in Equation 4 and P [u, v] obtained in Equation 6 are substituted into Equation 3, and the assigned Equation 3 is substituted into Equation 5. The original image data i (x, y) having no image can be obtained. The CPU 40 performs the above method according to the program.

D. As described above, in the shake detection system device according to the first embodiment, the memory card 1 that can be attached to and detached from the digital camera 31 is provided with an angular velocity sensor and the like, and thus no camera shake detection or camera shake correction function is provided. Even with the digital camera 31, by mounting the memory card 1, image data with little camera shake or image data without camera shake can be easily obtained. In addition, any digital camera that can be loaded with a memory card can realize the shake detection system apparatus of the present invention, so the structure is simple and the size can be reduced, and the cost is not increased.

[Modification 1]
E. The first embodiment can be modified as follows.
(1) In the first embodiment, when it is determined in step S25 in FIG. 5 that the camera is in the blur reduction shooting mode, the image data picked up by the CCD 35 is sequentially recorded, and the shutter button is fully pressed. The image data with the smallest blur amount among the plurality of stored image data is recorded, but the following mode may be used.

If it is determined in step S25 in FIG. 5 that the camera is in the shake reduction shooting mode, the process proceeds to step S51 in FIG. 9, and the CPU 40 performs AE processing and AF processing.
Next, the CPU 40 acquires the blur amount (angle signal) in the Yaw direction and the blur amount (angle signal) in the Pitch direction output from the control unit 18 of the memory card 1 via the connection terminal 20 and the card I / F 46. The data is stored in the buffer memory (step S52).

  Next, the CPU 40 displays the shake amount (angle signal) in the Yaw direction detected by the stored sensor 2 and the shake amount (angle signal) in the Pitch direction detected by the sensor 3 together with a through image of the subject. 23 is displayed (step S53). At this time, when the blur amount acquired together with the through image is displayed, a predetermined blur amount may be displayed together as shown in FIG. This predetermined blur amount will be described later.

Next, the CPU 40 determines whether or not the shutter button has been fully pressed by the user (step S54).
If it is determined in step S54 that the shutter button has not been fully pressed, the process returns to step S52. If it is determined that the shutter button has been fully pressed, exposure is started (step S55).
Next, the CPU 40 acquires the blur amount in the Yaw direction and the Pitch direction output from the memory card 1 and stores them in the buffer memory (step S56).

  Next, the CPU 40 determines whether or not the acquired blur amount is smaller than a predetermined blur amount (step S57). This predetermined blur amount is recorded in advance in the memory 39 or the like. This determination is made such that when both the obtained blur amount in the Yaw direction and the shake amount in the Pitch direction are smaller than the predetermined blur amount, the acquired blur amount is determined to be smaller than the predetermined blur amount. Alternatively, when one of the blur amount in the Yaw direction and the blur amount in the Pitch direction is smaller than the predetermined blur amount, it may be determined that the acquired blur amount is smaller than the predetermined blur amount. .

  It should be noted that the predetermined blur amount is defined as a predetermined blur amount corresponding to the blur amount in the Yaw direction (first predetermined blur amount) and a predetermined blur amount corresponding to the blur amount in the Pitch direction (second predetermined blur amount). You may make it provide separately in a Yaw direction and a Pitch direction. Further, when the sum of the obtained blur amount in the Yaw direction and the blur amount in the Pitch direction is smaller than the predetermined blur amount, the acquired blur amount may be determined to be smaller than the predetermined blur amount.

If it is determined in step S57 that the acquired blur amount is smaller than the predetermined blur amount, the CPU 40 determines whether or not the exposure has ended (step S59).
If it is determined in step S59 that the exposure has not ended, the process returns to step S56.
In other words, from the start of exposure until the end of exposure, the CPU 40 acquires the amount of blur output from the memory card and determines whether or not the acquired amount of blur is smaller than the predetermined amount of blur. Become.

When it is not determined that the blur amount output from the memory card 1 is equal to or greater than the predetermined blur amount (branch to Y in step S57), when exposure ends, that is, when the exposure time has elapsed (branch to Y in step S58). The shutter is closed and the still image data captured by the CCD 35 is read out and stored in the buffer memory (step S59).
Then, the stored still image data is compressed into the JPEG format, and the still image data is output to the memory card 1 via the card I / F 46 (step S60).

On the other hand, if it is determined that the blur amount output from the memory card 1 is equal to or greater than the predetermined blur amount before the exposure is finished (branch to N in step S57), the CPU 40 forces the exposure even before the exposure time has elapsed. Then, the shutter is closed and the still image data captured by the CCD 35 is read out and stored in the buffer memory (step S61). Thereby, still image data with a small amount of blur can be obtained.
Then, the CPU 40 performs exposure correction processing of still image data according to the underexposure amount (step S62), compresses the still image data subjected to the exposure correction processing into the JPEG format, and passes through the card I / F 46. Still image data is output to the memory card 1 (step S60). Although still image data with a small amount of blur can be obtained, still image data becomes underexposed, so that image data that is not underexposed can be obtained by performing exposure correction processing. Since the exposure correction processing is a well-known technique, description thereof is omitted.

(2) In the first embodiment, the Yaw direction sensor 2 and the Pitch direction sensor 3 are provided to detect the shake amount. However, the sensor further detects the shake amount in the Roll direction. May be provided. That is, the blur amount in the triaxial direction, not the biaxial direction, may be detected.
Further, a sensor for detecting the blur amount in the Yaw direction and a sensor for detecting the blur amount in the Roll direction may be used, or a sensor for detecting the blur amount in the Pich direction and a sensor for detecting the blur amount in the Roll direction. Good.

(3) Further, in the shake correction shooting mode in the first embodiment, still image data is converted based on the shake amount output from the memory card 1 (the shake amount detected by the sensor 2 and the sensor 3). Although the blur correction process is performed and recorded in the memory card 1, the blur amount may be recorded in association with still image data captured by the CCD 35 without performing the blur correction process. In this case, at the time of reproducing the still image data, the still image data is subjected to blur correction processing based on the blur amount recorded in association with the still image data, and the still image data is It will be played.
(4) Although the memory card is provided with a memory capable of recording image data and the like and a blur detection function, an apparatus having only a function for detecting blur may be used.
(5) In the first embodiment, still image data is recorded on the memory card 1. However, the digital camera 31 is provided with a recording medium such as a flash memory, and the image data is stored on the recording medium. It may be recorded.

[Second Embodiment]
Next, a second embodiment will be described.
In the first embodiment, a program corresponding to the memory card 1 with a built-in sensor function is recorded in the digital camera 31 in advance. In the second embodiment, the memory card 1 includes the program. The program is recorded, and the digital camera 31 performs blur reduction shooting and blur correction shooting according to the present invention in accordance with the program recorded in the memory card 1.

F. Operation of Blur Detection System Device The second embodiment also uses the memory card 1 having the same configuration as that shown in FIG. 1 and the digital camera 31 having the same configuration as that shown in FIG. Thus, the blur detection system apparatus of the present invention is realized. However, a program corresponding to the memory card 1 with a built-in sensor function, that is, a program for executing the blur reduction shooting mode and the blur correction shooting mode is recorded in the memory 19 of the memory card 1 in advance.
The operation of the shake detection system apparatus in the second embodiment will be described below.

F-1. Operation of Memory Card 1 First, the operation of the memory card 1 of the shake detection system apparatus will be described with reference to the flowchart of FIG.
When the user inserts the memory card 1 into the card slot of the digital camera 31 so that the memory card 1 and the digital camera 31 are connected and the digital camera 31 is turned on, the control unit 18 A program corresponding to the memory card 1 with a built-in sensor function recorded in the memory 19 is output to the digital camera 31 (step S101). That is, the program is sent to the CPU 40 via the connection terminal 20 and the card I / F 46.

  When the memory card 1 and the digital camera 31 are connected and the power of the digital camera 31 is turned on, the control unit 18 periodically reads the clock signal and the synchronization signal of the clock circuit of the CPU 30 and the clock of the CPU 30. The circuit and the clock circuit of the control unit 18 are synchronized. That is, the time measured by the clock circuit of the CPU 30 and the time counted by the clock circuit of the control unit 18 are made the same.

Next, the control unit 18 determines whether or not a control signal instructing to perform blur detection is sent from the CPU 40 of the digital camera 31 via the card I / F 46 and the connection terminal 20 (step S102).
If it is determined in step S102 that a control signal instructing to perform blur detection has not been sent, the process stays in step S2 until it is sent, and if it is determined that a control signal instructing to perform blur detection has been sent. Then, the control unit 18 drives the sensor 2 and the sensor 3 by sending a control signal to the drive circuit 21, and starts detection of the blur amount by the sensor 2 and detection of the blur amount by the sensor 3 (step S103).

When the detection of the blur amount is started, the control unit 18 detects the blur amount (angle signal) in the Yaw direction and the blur amount (angle signal) in the Pitch direction detected by the sensors 2 and 3 and sent to the control unit 18. ) Is output to the CPU 40 of the digital camera 31 via the connection terminal 20 and the card I / F 46 of the digital camera 31 (step S104).
Next, the control unit 18 determines whether still image data is sent from the digital camera 31 via the card I / F 46 and the connection terminal 16 (step S105).

If it is determined in step S105 that no still image data has been sent, the process returns to step S104. That is, the control unit 18 outputs the blur amount detected until the still image data is sent from the digital camera 31 to the digital camera 31 to the CPU 40.
On the other hand, if it is determined in step S105 that still image data has been sent, the control unit 18 records the still image data sent from the digital camera 31 in the memory 19.

F-2. Operation of Digital Camera 31 Next, the operation of the digital camera 31 of the shake detection system apparatus will be described with reference to the flowchart of FIG.
When the power of the digital camera 31 is turned on by the user's operation of the key input unit 42, the CPU 40 determines whether or not the memory card 1 is attached (step S111).
If it is determined in step S111 that the memory card 1 is not attached, the CPU 40 proceeds to other processing. If it is determined in step S111 that the memory card is attached, the CPU 40 reads the program output from the memory card 1. It is acquired and stored in the memory 39 of the digital camera 31 (step S112). In addition, although the program output from the memory card 1 was acquired, you may make it CPU40 read and acquire the program currently recorded on the memory card 1. FIG.
Next, the CPU 30 activates the program stored in the memory 39 (step S113).
When the program is activated, the CPU 40 determines whether or not the current mode is set to the shooting mode by the user's operation of the key input unit 42 (step S114).
If it is determined in step S114 that the shooting mode is not set, the process stays in step S114 until the shooting mode is set. If it is determined that the shooting mode is set, the CPU 40 shifts to the shooting mode of the present invention. That is, the process proceeds to the flowchart of the shooting mode in FIG.
Since the operation in the shooting mode is the same as that in the first embodiment, the description thereof is omitted.

G. As described above, in the second embodiment, the memory card 1 is recorded with a program for executing the blur reduction shooting mode, the blur correction shooting mode, and the like. If it is a camera, the blur detection system apparatus of this invention is realizable, without changing the hardware and software of a digital camera.

  Note that the second embodiment may be modified to an embodiment similar to the embodiment shown in the first modification.

[Third Embodiment]
Next, a third embodiment will be described.
In the third embodiment, the digital camera 41 performs a normal still image shooting process, and performs a blur correction process of still image data obtained by the shooting process on the memory card 1 side, and then It is to record data.

H. Configuration of Shake Detection System Device FIG. 13 is a block diagram showing an electrical schematic configuration of the memory card 1 that implements the shake detection system device according to the third embodiment.
The memory card 1 includes a sensor 2, a sensor 3, a high-pass filter 4, a high-pass filter 5, an amplifier 6, an amplifier 7, a low-pass filter 8, a low-pass filter 9, an A / D converter 10, an A / D converter 11, and a high-pass filter 12. , High pass filter 13, phase compensation unit 14, phase compensation unit 15, integrator 16, integrator 17, control unit 18, memory 19, connection terminal 20, drive circuit 21, and DRAM 22.

In addition, the same code | symbol is attached | subjected about the structure part which has the function similar to the memory card 1 in 1st Embodiment. That is, the memory card 1 in the third embodiment is obtained by adding the DRAM 22 to the configuration of the memory card 1 in the first embodiment.
The DRAM 22 is used as a buffer memory for temporarily storing blur amount data (angle signal) detected by the sensor 2 and the sensor 3 sent to the control unit 18 and also as a working memory for the control unit 18. The
As for the digital camera 31, the digital camera 31 having the same configuration as that shown in FIG. 2 is also used in the third embodiment. However, in the third embodiment, the CPU 30 performs a blur correction process. The still image data obtained in the photographing process without compression is compressed and output to the memory card 1.

I. Operation of the shake detection system apparatus The operation of the shake detection system apparatus in the third embodiment will be described.

I-1. Operation of Memory Card 1 First, the operation of the memory card 1 of the shake detection system device will be described with reference to the flowchart of FIG.
When the user inserts the memory card 1 into the card slot of the digital camera 31 so that the memory card 1 and the digital camera 31 are connected and the digital camera 31 is turned on, the control unit 18 includes the drive circuit 21. The sensor 2 and the sensor 3 are driven by sending a control signal to the sensor 2 and the detection of the blur amount by the sensor 2 and the detection of the blur amount by the sensor 3 are started (step S201).

  When the memory card 1 and the digital camera 31 are connected and the power of the digital camera 31 is turned on, the control unit 18 periodically reads the clock signal and the synchronization signal of the clock circuit of the CPU 30 and the clock of the CPU 30. The circuit and the clock circuit of the control unit 18 are synchronized. That is, the time measured by the clock circuit of the CPU 30 and the time counted by the clock circuit of the control unit 18 are made the same.

  When the blur amount detection is started, the control unit 18 detects the blur amount data (angle signal) in the Yaw direction and the blur amount data in the Pitch direction detected by the sensors 2 and 3 and sent to the control unit 18. The (angle signal) is stored in the DRAM 22 (buffer memory), and the time data when the blur amount is detected is stored in association with the blur amount data in the Yaw direction and the blur amount data in the Pitch direction (step S202).

Next, the control unit 18 determines whether still image data has been sent from the digital camera 31 (step S203).
If it is determined in step S203 that still image data has not been sent, the process returns to step S202. That is, until the still image data is sent from the digital camera 31, the control unit 18 sequentially stores the detected blur amount data in association with the time data when the blur amount data is detected in the buffer memory. Become.
When the blur amount data is stored in the full buffer memory, the old blur amount data and the associated time data are erased and the newly detected blur amount data and time data are stored. .

If it is determined in step S203 that still image data and shooting time data have been sent, the control unit 18 stores the received still image data and shooting time data in the buffer memory (step S204).
Next, the control unit 18 reads out blur amount data corresponding to the shooting time stored in association with the stored still image data from the buffer memory (step S205). The shooting time recorded in association with this still image data refers to the time from the time when exposure starts to the time when exposure ends, and the blur amount data corresponding to the shooting time means the exposure start time. This is the blur amount data detected between the exposure time and the exposure end time, and is determined based on the time data stored in association with the blur amount data.

  Next, the control unit 18 determines whether or not the blur amount of the read blur amount data is smaller than a predetermined blur amount (step S206). This predetermined blur amount is recorded in advance in the memory 39 or the like. The determination as to whether or not the blur amount is smaller than the predetermined blur amount is made when the blur amounts of both the read blur amount in the Yaw direction and the blur amount in the Pitch direction are smaller than the predetermined blur amount. May be determined to be smaller than the predetermined blur amount, and if more than half of the read blur amounts are less than the predetermined blur amount, the read blur amount is the predetermined blur amount. You may make it judge that it is smaller.

  It should be noted that the predetermined blur amount is defined as a predetermined blur amount corresponding to the blur amount in the Yaw direction (first predetermined blur amount) and a predetermined blur amount corresponding to the blur amount in the Pitch direction (second predetermined blur amount). You may make it provide separately in a Yaw direction and a Pitch direction. Further, when the sum of all of the acquired blur amounts in the Yaw direction and the blur amount in the Pitch direction is smaller than a predetermined blur amount, the acquired blur amount may be determined to be smaller than the predetermined blur amount. .

  If it is determined in step S206 that the read blur amount is not smaller than the predetermined blur amount, the control unit 18 performs JPEG-format decompression processing on the still image data stored in the buffer memory (step S207). Based on the blur amount data read in S205, blur correction processing is performed on the still image data expanded to the JPEG format (step S208).

Then, the control unit 18 compresses the still image data subjected to the blur correction process into the JPEG format and records it in the memory 19 of the memory card 1 (step S209).
On the other hand, when determining in step S206 that the read blur amount is smaller than the predetermined blur amount, the control unit 18 records the still image data stored in the buffer memory in the memory 19 (step S210).

I-2. Operation of Digital Camera 31 Next, the operation of the digital camera 31 of the shake detection system apparatus will be described with reference to the flowchart of FIG.
When the power of the digital camera 31 is turned on by the user's operation of the key input unit 42 and the photographing mode is set, the imaging of the subject by the CCD 35 is started at a predetermined frame rate (fixed period of 1/30 seconds). The captured image data is subjected to image processing, stored in the buffer memory (DRAM 38), and the stored image data is displayed on the image display unit 41, so-called through image display is performed (step S251).

Next, the CPU 40 determines whether or not the user has pressed the shutter button halfway (step S252).
If it is determined in step S252 that the shutter button is not half-pressed, the process returns to step S251. If it is determined in step S252 that the shutter button is half-pressed, the CPU 40 performs AE processing and AF processing (step S253).
Next, the CPU 40 displays a through image of the subject imaged by the CCD 35 on the image display unit 41 (step S254).

Next, the CPU 40 determines whether or not the shutter button has been fully pressed by the user (step S255).
If it is determined in step S255 that the shutter button is not fully pressed, the process returns to step S254. If it is determined in step 255 that the shutter button is fully pressed, the CPU 40 performs still image shooting processing and stores the shooting time. (Step S256). The photographing time refers to the time from the time when exposure starts to the time when exposure ends.

Next, when performing the still image shooting process, the CPU 40 compresses the still image data obtained by the still image shooting process into the JPEG format, and associates the compressed still image data with the stored shooting time as a buffer. Store in the memory (step S257).
Next, the stored still image data and shooting time are output to the memory card 1.
As described above, when the blur amount corresponding to the photographing time is determined to be equal to or greater than the predetermined blur amount on the memory card 1 side, the still image data is subjected to blur correction processing.

J. et al. As described above, in the third embodiment, not only the shake detection function but also the function for performing the shake correction is provided in the memory card 1, so that the processing load of the digital camera 31 can be greatly reduced. Further, even with a digital camera 31 that is not equipped with a blur correction function that can be connected to the memory card 1, image data that has undergone camera shake correction can be recorded simply by mounting the memory card 1.

  In the third embodiment, the blur amount data detected by the sensor 2 and the sensor 3 is not output to the digital camera 31. However, the blur amount data detected by the sensor 2 and the sensor 3 is not output to the digital camera 31. The digital camera 31 may display the blur amount based on the output blur amount data on the image display unit 41 together with the through image of the subject. In this case, a program for displaying the blur amount based on the blur amount data on the image display unit 41 is required. However, the program may be recorded in the digital camera 31 in advance, or a memory card. The program may be read from 1.

  Further, the memory card 1 may record the detected blur amount data and the still image data in association with each other without performing blur correction.

Further, the digital camera 31 in each of the above embodiments is not limited to the above embodiment, and may be a mobile phone with a camera, a PDA with a camera, a personal computer with a camera, an IC recorder with a camera, a digital video camera, or the like. In short, any device that can shoot a subject can be used.
In addition, the memory card 1 in each of the above embodiments is not limited to the above embodiment, and may be anything as long as it is a device that detects camera shake capable of inputting / outputting data with the digital camera 31.

1 is a block diagram of a memory card according to an embodiment of the present invention. 1 is a block diagram of a digital camera according to an embodiment of the present invention. It is a flowchart which shows operation | movement of the memory card of 1st Embodiment. It is a flowchart which shows operation | movement of the digital camera of 1st Embodiment. It is a flowchart which shows operation | movement of the digital camera of 1st Embodiment. It is a flowchart which shows operation | movement of the digital camera of 1st Embodiment. The display example of the blur amount in the Yaw direction and the blur amount in the Pitch direction is shown. It is a figure for demonstrating how to obtain | require the blur direction angle (theta) and the blur distance L. FIG. It is a flowchart which shows operation | movement of the digital camera in a modification. The display example of the blur amount in the Yaw direction, the blur amount in the Pitch direction, and the predetermined blur amount in the modified example is shown. It is a flowchart which shows operation | movement of the memory card of 2nd Embodiment. It is a flowchart which shows operation | movement of the digital camera of 2nd Embodiment. It is a block diagram of the memory card in 3rd Embodiment. It is a flowchart which shows operation | movement of the memory card of 3rd Embodiment. It is a flowchart which shows operation | movement of the digital camera of 3rd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Memory card 2 Yaw direction camera shake sensor 3 Pitch direction camera shake sensor 4 High pass filter 5 High pass filter 6 Amplifier 7 Amplifier 8 Low pass filter 9 Low pass filter 10 A / D converter 11 A / D converter 12 High pass filter 13 High pass filter 14 Phase compensation Section 15 Phase compensation section 16 Integrator 17 Integrator 18 Control section 19 Memory 20 Connection terminal 21 Drive circuit 22 DRAM
31 Digital Camera 32 Shooting Lens 33 Lens Drive Block 34 Shutter / Shutter 35 CCD
36 TG
37 Unit circuit 38 DRAM
39 Memory 40 CPU
41 Image display section 42 Key input section 43 External communication I / F
44 Strobe Drive Unit 45 Strobe Flash Unit 46 Card I / F

Claims (44)

A blur detection system device comprising an imaging device and a blur detection device capable of inputting and outputting data between the imaging device,
The blur detection device is:
Blur detection means for detecting the blur amount;
First output means for outputting shake amount data of the shake amount detected by the shake detection means;
With
The imaging device
Imaging means for imaging a subject;
First acquisition means for acquiring blur amount data output by the first output means;
A blur correction unit that corrects blur of an image of the image data captured by the imaging unit based on the blur amount data acquired by the first acquisition unit;
Second output means for outputting image data that has undergone shake correction by the shake correction means;
A blur detection system apparatus comprising: The imaging device
A shooting control means for controlling still image shooting of a subject by the imaging means;
The blur correction means includes
Correcting blurring of an image of image data obtained by still image shooting by the shooting control unit based on blur amount data acquired by the first acquisition unit during still image shooting by the shooting control unit; The blur detection system device according to claim 1, wherein The photographing control means includes
Taking a still image of a subject by reading out the image data obtained by the imaging means after performing exposure,
The first acquisition means includes
Obtaining blur amount data detected by the blur detection means during exposure by the photographing control means;
The blur correction means includes
The blur detection according to claim 2, wherein blurring of an image of image data obtained by still image shooting by the shooting control unit is corrected based on the blur amount data acquired by the first acquisition unit. System unit. A blur detection system device comprising an imaging device and a blur detection device capable of inputting and outputting data between the imaging device,
The blur detection device is:
Blur detection means for detecting the blur amount;
First output means for outputting shake amount data of the shake amount detected by the shake detection means;
With
The imaging device
Imaging means for imaging a subject;
First acquisition means for acquiring blur amount data output by the first output means;
The image data captured by the imaging unit and the blur amount data acquired by the first acquisition unit are associated with each other and sequentially stored in the storage unit, and among the blur amount data stored in the storage unit, Minimum blur image selection means for selecting image data corresponding to blur amount data with a small blur amount;
Second output means for outputting the image data selected by the minimum blur image selecting means;
A blur detection system apparatus comprising: The imaging device
Instructing means for the user to stop imaging of the subject by the imaging means,
The minimum blur image selection means includes
When the instruction unit instructs to stop imaging of the subject, the image data captured by the imaging unit and the blur amount data detected by the detection unit and acquired by the first acquisition unit 5. The blur detection system apparatus according to claim 4, further comprising means for prohibiting storage. The minimum blur image selection means includes
Associating the image data captured by the imaging unit with the blur amount data detected by the detection unit and acquired by the first acquisition unit at the same time as when the image data was captured 6. The blur detection system apparatus according to claim 4, wherein the blur detection system apparatus stores the data in the storage unit. The imaging device
A selection means for the user to select image data;
The minimum blur image selection means includes
7. The blur detection system apparatus according to claim 4, wherein when the image data is selected by the selection means, the selected image data is selected. The imaging device
A first display control unit configured to display on the display unit an image of the plurality of image data stored in the storage unit and a blur amount based on the blur amount data stored in association with the image data; The blur detection system apparatus according to claim 4, wherein: A blur detection system device comprising an imaging device and a blur detection device capable of inputting and outputting data between the imaging device,
The blur detection device is:
Blur detection means for detecting the blur amount;
First output means for outputting shake amount data of the shake amount detected by the shake detection means;
With
The imaging device
Imaging means for imaging a subject;
First acquisition means for acquiring blur amount data output by the first output means;
An instruction means for the user to instruct photographing;
When there is an instruction to shoot by the instruction means, shooting control means for taking a still image of a subject by reading out image data taken by the imaging means after performing exposure;
It is determined whether or not a blur amount based on the blur amount data detected by the detection unit and acquired by the first acquisition unit during exposure by the photographing control unit is smaller than a predetermined blur amount, and the acquired blur amount When it is determined that the amount of blur based on the data is not smaller than the predetermined amount of blur, the control unit is configured to forcibly end the exposure by the imaging control unit and read the image data captured by the imaging unit. When,
Second output means for outputting image data read by the control means;
A blur detection system apparatus comprising: The control means includes
10. The blur detection system device according to claim 9, wherein the exposure is terminated by closing the shutter. The imaging device
Exposure correction means for correcting the exposure of the image data,
The exposure correction means includes
Correcting the exposure of the image data according to the underexposure amount of the image data read by the control means,
The second output means includes
11. The blur detection system apparatus according to claim 9, wherein the image data is output after exposure correction by the exposure correction means. The second output means includes
If the exposure by the imaging control unit is terminated without determining that the blur amount based on the blur amount data acquired by the first acquisition unit is smaller than the predetermined blur amount by the control unit, the shooting control is performed. 12. The blur detection system apparatus according to claim 9, wherein the image data read by the means is output. The imaging device
Recording control means for recording the image data output by the second output means in a recording means;
The blur detection system apparatus according to claim 1, comprising: The blur detection device is:
Second acquisition means for acquiring image data output by the second output means;
Recording control means for recording the image data acquired by the second acquisition means in a recording means;
The blur detection system apparatus according to claim 1, comprising: The imaging device
The image processing apparatus includes a second display control unit that causes the display unit to display an image of the image data captured by the imaging unit and a blur amount based on the blur amount data acquired by the first acquisition unit. The blur detection system apparatus according to claim 1. A blur detection system device comprising an imaging device and a blur detection device capable of inputting and outputting data between the imaging device,
The imaging device
Imaging means for imaging a subject;
A first time measuring means for measuring time;
Shooting control means for shooting a still image of a subject by reading out image data taken by the imaging means after performing exposure; and
An output means for outputting the photographing time measured by the first time measuring means and the image data read by the photographing control means;
With
The blur detection device is:
Blur detection means for detecting the blur amount;
Acquisition means for acquiring image data and photographing time output by the output means;
A blur correction unit that corrects a blur of an image of the image data acquired by the acquisition unit based on the blur amount data detected by the blur detection unit at the photographing time acquired by the acquisition unit;
Recording control means for recording the image data subjected to the blur correction by the blur correction means in the recording means;
A blur detection system apparatus comprising: The blur detection device is:
A second time measuring means for measuring time;
Storage control means for sequentially storing the shake amount data detected by the shake detection means and the time measured by the second time measurement means in association with each other in the storage means;
Reading means for reading out the blur amount data corresponding to the photographing time acquired by the acquisition means from the storage means;
With
The blur correction means includes
17. The blur detection system device according to claim 16, wherein the blur of the image of the image data acquired by the acquisition unit is corrected based on the blur amount data corresponding to the photographing time read by the reading unit. The second time measuring means includes
18. The shake detection system apparatus according to claim 17, wherein the shake detection system apparatus is synchronized with the first time measuring means. The photographing time measured by the first time measuring means is:
The shake detection system apparatus according to claim 16, wherein the time is from an exposure start time to an exposure end time by the photographing control unit. The blur detection device is:
A determination unit that determines whether or not a blur amount based on the blur amount data detected by the detection unit at a photographing time acquired by the acquisition unit is smaller than a predetermined blur amount;
The blur correction means includes
When it is determined by the determination means that the blur amount based on the blur amount data detected by the detection means at the photographing time is not smaller than a predetermined blur amount, the acquisition means acquires the blur amount based on the detected blur amount data. Correct the image blur of the selected image data,
The recording control means includes
20. The blur detection system apparatus according to claim 16, wherein the image data corrected by the blur correction unit is recorded in the recording unit. The correction means includes
When the determination unit determines that the blur amount based on the blur amount data detected by the detection unit at the photographing time is smaller than the predetermined blur amount, the correction of the image blur of the image data acquired by the acquisition unit Ban
The recording control means includes
21. The shake detection system apparatus according to claim 20, wherein the image data acquired by the acquisition unit is recorded in the recording unit. Acquisition means for acquiring blur amount data detected by an external device for detecting the blur amount;
Imaging means for imaging a subject;
A blur correction unit that corrects a blur of an image of the image data captured by the imaging unit based on the blur amount data acquired by the acquisition unit;
Output means for outputting the image data corrected by the blur correction means;
An imaging apparatus comprising: A shooting control means for controlling still image shooting of a subject by the imaging means;
The blur correction means includes
Based on the blur amount data detected by the external device and acquired by the acquisition unit during still image shooting by the shooting control unit, image blur of image data obtained by still image shooting by the shooting control unit is corrected. The imaging apparatus according to claim 22, wherein correction is performed. The photographing control means includes
Taking a still image of a subject by reading out the image data obtained by the imaging means after performing exposure,
The acquisition means includes
Obtaining blur amount data detected by the external device during exposure by the photographing control means;
The blur correction means includes
24. The imaging apparatus according to claim 23, wherein image blurring of image data obtained by still image shooting by the shooting control unit is corrected based on the blur amount data acquired by the acquisition unit. Acquisition means for acquiring blur amount data detected by an external device for detecting the blur amount;
Imaging means for imaging a subject;
The image data captured by the imaging unit and the blur amount data acquired by the acquisition unit are sequentially associated with each other and stored in the storage unit. The blur amount data stored in the storage unit has the largest blur amount. Minimum blur image selection means for selecting image data corresponding to a small amount of blur data;
Output means for outputting the image data selected by the minimum blur image selecting means;
An imaging apparatus comprising: Instructing means for the user to stop imaging of the subject by the imaging means,
The minimum blur image selection means includes
When the instruction unit instructs to stop imaging of the subject, the storage of the image data captured by the imaging unit and the blur amount data detected by the external device and acquired by the acquisition unit is stored. 26. The imaging apparatus according to claim 25, further comprising a prohibiting unit. The minimum blur image selection means includes
The image data captured by the imaging unit and the blur amount data detected by the acquisition unit and acquired at the same time as the time when the image data was captured are associated and stored in the storage unit 27. The imaging apparatus according to claim 25 or 26. A selection means for the user to select image data;
The minimum blur image selection means includes
28. The image pickup apparatus according to claim 25, wherein when the image data is selected by the selection unit, the selected image data is selected. A first display control unit configured to display on the display unit an image of the plurality of image data stored in the storage unit and a blur amount based on the blur amount data stored in association with the image data; The imaging apparatus according to any one of claims 25 to 28, wherein: Acquisition means for acquiring blur amount data detected by an external device for detecting the blur amount;
Imaging means for imaging a subject;
An instruction means for the user to instruct photographing;
When there is an instruction to shoot by the instruction means, shooting control means for taking a still image of a subject by reading out image data taken by the imaging means after performing exposure;
It is determined whether or not a blur amount based on the blur amount data detected by the external device and acquired by the acquisition unit during exposure by the photographing control unit is smaller than a predetermined blur amount, and based on the acquired blur amount data If it is determined that the amount of blur is not smaller than a predetermined amount of blur, the control means for forcibly ending the exposure by the imaging control means and controlling to read the image data imaged by the imaging means;
Output means for outputting image data read by the control means;
An imaging apparatus comprising: The control means includes
31. The image pickup apparatus according to claim 30, wherein the exposure is terminated by closing the shutter. Exposure correction means for correcting the exposure of the image data,
The exposure correction means includes
Correcting the exposure of the image data based on the underexposure amount of the image data read by the control means,
The output means includes
32. The image pickup apparatus according to claim 30, wherein the image data corrected by the exposure correction unit is output. The output means includes
When exposure by the photographing control unit is completed without determining that the blur amount based on the blur amount data acquired by the acquisition unit is not smaller than a predetermined blur amount by the control unit, the reading is read by the shooting control unit. The image pickup apparatus according to any one of claims 30 to 32, wherein the output image data is output. 34. The imaging apparatus according to claim 22, further comprising a recording control unit that records the image data output by the output unit in a recording unit. A second display control unit is provided for causing the display unit to display an image based on the image data captured by the imaging unit and a blur amount based on the blur amount data acquired by the acquisition unit. The imaging device according to any one of claims 22 to 34. Blur detection means for detecting the blur amount;
Acquisition means for acquiring still image data and shooting time output from the imaging device;
Correction means for correcting image blur of the image data acquired by the acquisition means based on blur amount data detected by the shake detection means at the photographing time acquired by the acquisition means;
Recording control means for recording the image data subjected to the blur correction by the blur correction means in the recording means;
An external recording medium comprising: A time measuring means for measuring time;
Storage control means for associating and storing the shake amount data detected by the shake detection means and the time measured by the timing means in the storage means;
A reading means for reading out the blur amount data corresponding to the photographing time acquired by the acquiring means from the storage means;
With
The blur correction means includes
37. The external recording medium according to claim 36, wherein image blurring of the image data acquired by the acquisition unit is corrected based on blur amount data corresponding to the photographing time read by the reading unit. The shooting time is
38. The external recording medium according to claim 36 or 37, wherein the external recording medium is a time from an exposure start time to an exposure end time for obtaining still image data output from the imaging device. A determination unit that determines whether or not a blur amount based on the blur amount data detected by the detection unit at a photographing time acquired by the acquisition unit is smaller than a predetermined blur amount;
The blur correction means includes
When it is determined by the determination means that the blur amount based on the blur amount data detected by the detection means at the photographing time is not smaller than a predetermined blur amount, the acquisition means acquires the blur amount based on the detected blur amount data. Correct the image blur of the selected image data,
The recording control means includes
39. The external recording medium according to claim 36, wherein the image data that has undergone blur correction by the blur correction unit is recorded in the recording unit. The correction means includes
When the blur amount based on the blur amount data detected by the detection unit at the photographing time is determined by the determination unit to be smaller than a predetermined blur amount, image blur correction of the image data acquired by the acquisition unit is performed. Ban,
The recording control means includes
40. The external recording medium according to claim 39, wherein the image data acquired by the acquisition unit is recorded in the recording unit. An acquisition process for acquiring blur amount data detected by an external device that detects the blur amount;
Imaging processing for imaging a subject;
A blur correction process for correcting blur of an image of the image data captured by the imaging process based on the blur amount data acquired by the acquisition process;
An output process for outputting the image data corrected by the blur correction process;
A program characterized by causing a computer to execute the processes described above. An acquisition process for acquiring blur amount data detected by an external device that detects the blur amount;
Imaging processing for imaging a subject;
A storage process for sequentially storing the image data captured by the imaging process in association with the blur amount data acquired by the acquisition process in a storage medium;
Output processing for outputting image data corresponding to blur amount data with the smallest blur amount among blur amount data stored in the storage medium;
A program characterized by causing a computer to execute the processes described above. An acquisition process for acquiring blur amount data detected by an external device that detects the blur amount;
First determination processing for determining whether or not a user has instructed shooting,
When it is determined that an instruction to shoot has been given by the first determination process, a shooting process for shooting a still image of a subject by reading out image data obtained by an image sensor after performing exposure;
A second determination process for determining whether or not a blur amount based on the blur amount data detected by the external device and acquired by the acquisition process during exposure by the photographing process is smaller than a predetermined blur amount;
When it is determined that the blur amount based on the blur amount data detected by the second determination process is not smaller than the predetermined blur amount, the exposure by the photographing process is forcibly terminated and obtained by the image sensor. Processing to read out the received image data;
An output process for outputting the image data read by this process;
A program characterized by causing a computer to execute the processes described above. A blur detection process for detecting the blur amount;
Acquisition processing for acquiring still image data and shooting time output from the imaging device;
A correction process for correcting image blur of the image data acquired by the acquisition process based on the blur amount data detected by the blur detection process at the photographing time acquired by the acquisition process;
A recording process for recording the image data subjected to the blur correction by the blur correction process on a recording medium;
A program characterized by causing a computer to execute the processes described above.

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