JP2008072530A - Imaging apparatus and imaging program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce camera shake in accordance with a zoom operation and to attain an easy zoom operation. <P>SOLUTION: A control part 21 displays or eliminates a standard angle of field frame/the maximum telephotographic angle of field frame whenever a function key (address book key 243) is operated during photography of a moving image. On the other hand, when an operation of a cross key 241 is detected, photographing size (the maximum wide angle of field/standard angle of field/the maximum telephotographic angle of field) in an imaging area is changed by referring to a hand shake correction range setting table 21 according to a direction of vertical operation of the cross key 241 and a hand shake correction range is changed so that it becomes wider as the photographing size becomes narrower according to the changed photographing size. Then, encoding processing is performed while performing hand shake correction processing according to the hand shake correction range by a video encoding/decoding part 19 and an image picked up by an imaging device 15 is taken in. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an imaging apparatus and an imaging program.

  In recent years, a mobile phone having a photographing function acquires a video imaged by an image sensor and saves it as a compressed and encoded file in JPEG format (in the case of a still image) or MPEG format (in the case of a moving image). There is technology.

  By the way, in a mobile phone having a photographing function, a technique that enables multi-stage zoom during photographing according to an operation of a cross key is known. In addition, there is a technique for preventing misperception during zoom operation by displaying that the zoom value is different from the angle of view for which camera shake correction is not set when camera shake correction is set (see, for example, Patent Document 1).

JP 2006-128941 A (FIG. 1, page 6)

However, the prior art only informs the user of the difference between the zoom value when the camera shake correction function is set and when it is not set, and the camera shake correction frame corresponds to the zoom value when zooming is performed during shooting. There was a problem of not making changes.
In other words, when the zoom operation is performed to the telephoto side during shooting (if the digital zoom is used, the imaging area is substantially reduced), camera shake may occur following this operation. Since the camera shake correction frame is set regardless of the camera movement, there has been a problem that the camera shake of the zoom operation by the user at the time of shooting cannot be absorbed.

  Therefore, an object of the present invention is to provide an imaging apparatus and an imaging program that can reduce camera shake accompanying a zoom operation and can realize an easy zoom operation.

  To achieve the above object, an image pickup apparatus according to the first aspect of the present invention stores a plurality of sets of image pickup means, the size of a captured image captured by the image pickup means, and a correction range set according to the captured size. Storage means, a setting means for arbitrarily selecting and setting the captured size from the captured sizes stored in the storage means, an instruction means for instructing recording of a captured image by the imaging means, and When recording is instructed by the instruction unit, the correction range corresponding to the capture size set by the setting unit is read from the storage unit, and a plurality of captured images within the correction range are captured. Correction means for correcting the captured image to be recorded based on the captured image, and recording means for encoding and recording the captured image corrected by the correction means. Characterized in that it Bei.

  Further, as a preferred aspect, for example, as in claim 2, in the imaging apparatus according to claim 1, the image pickup apparatus further includes instruction determination means for determining whether or not a change in capture size is instructed, and the setting means includes When it is determined that the capture size change is instructed by the instruction determination unit, a correction range corresponding to the capture size instructed to change is read out from the plurality of correction ranges stored in the storage unit. It is characterized by resetting.

  Further, as a preferred aspect, for example, as in claim 3, in the imaging apparatus according to claim 1 or 2, a frame indicating the set capture size and a frame indicating a correction range corresponding to the capture size are provided. Is further provided with the 1st display means to display with the said captured image.

  Further, as a preferred aspect, for example, as in claim 4, in the imaging apparatus according to any one of claims 1 to 3, the captured image corresponding to the set capture size and the set capture size are set. The image display apparatus further includes second display means for displaying the captured image within the correction range corresponding to the item in an identifiable manner.

  Further, as a preferable aspect, for example, as in claim 5, in the imaging device according to any one of claims 1 to 4, the instruction unit instructs recording of a moving image based on an image captured by the imaging unit, When recording is instructed by the instruction unit, the correction unit reads a correction range corresponding to the captured size set by the setting unit from the storage unit, and sequentially captures a plurality of captured images within the correction range. And correcting to a moving image with the set shooting size.

  In order to achieve the above object, an imaging program according to a sixth aspect of the invention stores a plurality of sets of a captured size of a captured image by an imaging unit and a correction range set in accordance with the captured size in advance. Setting means for arbitrarily selecting and setting the capture size from the storage unit, instruction means for instructing recording of the captured image, and when recording is instructed by this instruction means, it corresponds to the capture size set by the storage unit A correction unit that reads out a correction range to be captured, captures a plurality of captured images within the correction range, corrects a captured image to be recorded based on the captured plurality of captured images, and a captured image corrected by the correction unit It is made to function as a recording means which encodes and records.

  According to the present invention, when a plurality of sets of captured sizes stored in advance and a correction range set according to the captured size are arbitrarily selected and set, and recording of the captured image is instructed, This correction is performed by reading a correction range corresponding to the set capture size, capturing a plurality of captured images within the correction range, correcting the captured image to be recorded based on the captured images. Since the captured image is encoded and recorded, it is possible to reduce the camera shake accompanying the zoom operation and to realize an easy zoom operation.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

A. Configuration of Embodiment FIG. 1 is a block diagram showing a configuration of a mobile phone according to an embodiment of the present invention. In the figure, the wireless communication processing unit 10 includes modulation / demodulation based on the PSK method and terminal authentication processing based on the CDMA method, such as transmitting and receiving voice and data (mail data) via the antenna 11 by radio and modulating / demodulating. In addition to performing communication processing, the device is controlled including WWW connection control and data processing in accordance with a communication protocol. The audio encoding / decoding unit 12 encodes and takes in the audio signal from the microphone 121, decodes the audio data, converts it into an audio signal, and outputs it from the speaker 122.

  The system memory 13 stores a basic system program for mainly controlling overall wireless communication processing in the mobile phone. The user memory 14 stores various data generated in the device such as data used in the telephone mode, such as address book data and mail data, image data captured in the camera mode, and moving image data.

  The imaging device 15 is configured by a CCD or a CMOS, and captures an image focused by the imaging lens 16 as a color image. The in-camera buffer 17 temporarily holds the image data captured by the imaging device 15. The frame buffer 18 holds image data in units of one frame from the image data temporarily held in the camera buffer 17.

  The video encoding / decoding unit 19 encodes the image data held in the frame buffer 18 in a predetermined format (JPEG, MPEG) and decodes the image data that has already been captured and encoded. The control unit 20 controls the operation of each unit according to a predetermined program stored in the system memory 13. In particular, in the present embodiment, the control unit 20 includes a camera shake correction range setting table 21. As shown in FIG. 2, the camera shake correction range setting table 21 displays a frame indicating an area that can be imaged by the imaging device 15 corresponding to the imaging field angle (maximum wide-angle field angle, standard field angle, and maximum telephoto field angle). , Capture size, camera shake range.

  That is, for the maximum wide-angle field angle, frame display (none), capture size S1, camera shake range S2, for standard field angle, frame display F1, capture size S3, camera shake range S4, and maximum For the telephoto angle of view, a frame display F2, a shooting size S5, and a camera shake range S6 are stored. Details of each of the captured sizes S1, S3, S5 and the camera shake correction ranges S2, S4, S6 will be described later.

  Under the control of the control unit 20, the display control unit 22 has a captured image, a region (frame) that can be captured by the imaging device, an imaging range, and a substantially wide, camera shake associated with the imaging range. The camera shake range where the correction functions is displayed. The key input unit 24 includes a cross key 241 for moving the focus during menu display, a determination key 242 for determination, an address book key 243 for browsing address book data, and a network connection key 244 for instructing network connection. , Movie playback key 245 for starting movie playback mode, mail key 246 for starting email mode (reception, creation, editing, transmission), off-hook key, clear key (cancel detection), on-hook key (all clear: A jump instruction to wait for an incoming call), and a numeric keypad 247 for inputting a telephone number or a character symbol. The cross key 241 selects an imaging field angle, that is, a maximum wide field angle, a standard field angle, or a maximum telephoto field angle by an up / down operation.

  Next, FIGS. 3A to 3D are schematic diagrams showing a camera shake correction range and a capture size at each angle of view of the mobile phone according to the present embodiment. At the maximum wide-angle field of view, as shown in FIG. 3A, the capture size S1 is set in a region slightly narrower than the entire imageable region of the imaging device 15, and the camera shake correction range S2 is set around the capture size S1. In the standard angle of view, as shown in FIG. 3C, the shooting size S3 is set in a narrow area where the image can be captured with respect to the maximum wide-angle angle of view, and a camera shake correction range around the shooting size S3. S4 is set.

  Further, at the maximum telephoto angle of view, as shown in FIG. 3 (d), the shooting size S5 is set in a narrow area that can be imaged with respect to the standard angle of view, and the camera shake correction range around the shooting size S5. S6 is set. That is, the relationship between the sizes of the captured sizes S1, S3, and S5 is S1> S3> S5 as shown in FIG.

  Further, the more the digital zoom is applied, the more the image pickup area becomes narrower, and the more the camera shake becomes more prominent. Is 1> A5 / A6> A3 / A4> A1 / A2> 0 in the width direction, and 1> B5 / B6> B3 / B4> B1 / B2> 0 in the lengthwise direction. In other words, the camera shake correction range is set to be wider as it goes to the telephoto side.

B. Operation of Embodiment Next, the operation of the above-described embodiment will be described. Here, FIG. 4 is a flowchart for explaining the operation of the mobile phone 1 according to the present embodiment. In the moving image shooting mode, before moving image shooting (before recording is started), as shown in FIG. 6, the display unit 23 has an icon 123 indicating the reception state, an icon 124 indicating the remaining battery level, and a current time display for displaying the current time. An area 125, a display area 120 for displaying a captured image, are arranged. Below that, a time bar 126 indicating a recording time, a guidance display area 127 for displaying various guidance, an icon 128 for instructing start of shooting, and a sub An icon 129 for opening the menu is displayed. The icon 128 corresponds to the operation of the enter key 242, and the icon 129 corresponds to the operation of the address book key 243.

  When the enter key 242 is operated, moving image shooting is started, and at the same time, compression encoding processing is executed. First, at the start of moving image shooting, an image captured at the maximum wide-angle field of view (capture size S1) is displayed (step S10). In the display area 120 of the display unit 23, as shown in FIG. 7, a maximum field angle frame 160 indicating the capture size S1 at the maximum wide angle field angle is displayed, and camera shake correction at the maximum wide angle field angle is provided around it. A camera shake correction frame 161 indicating the range S2 is displayed. At this time, the camera shake correction range S2 is indicated by hatching in the drawing, but is actually translucent (transparent hatching) so that the subject imaged by the imaging device 15 can be visually recognized. The time bar 126 displays the recording time, the guidance display area 127 displays a guidance “zoom switching by“ switching ”operation”, and an icon 128 (stopping shooting) at the bottom. A determination key 242) and an icon 129 (address book key 243) for switching the zoom are displayed.

  It is determined whether or not an operation of a function key is detected during moving image shooting, that is, in this case, an operation of an address book key 243 corresponding to an icon 129 for switching zoom is detected (step S12). . If the operation of the address book key 243 is not detected, it is determined whether or not the operation of the enter key 242 (in this case, the icon 128 for stopping moving image shooting) is detected (step S32). If the operation of the enter key 242 is not detected, the process returns to step S10, and the image captured at the maximum wide-angle field angle (capture size S1) is displayed again as shown in FIG.

  On the other hand, when the operation of the address book key 243 corresponding to the icon 129 for switching the zoom is detected, the standard field angle frame and the maximum telephoto field angle frame are displayed (step S14). As shown in FIG. 8, the display area 120 of the display unit 23 includes a standard field angle together with a maximum field angle frame 160 indicating a capture size S1 at a maximum wide angle field angle and a camera shake correction frame 161 indicating a camera shake correction range S2. A standard field angle frame 170 indicating the shooting size S3 at the maximum and a maximum telephoto field angle frame 180 indicating the shooting size S5 at the maximum telephoto field angle are displayed. At this time, except for the capture size S1 at the maximum wide-angle field angle, as described above, it is actually made translucent so that the captured image of the imaging device can be visually recognized.

  In addition, a captured display area 130 in which a frame image that is actually captured is displayed is disposed below the display unit 23. In the illustrated example, a frame image captured at the maximum wide-angle field angle (capture size S1) is displayed in the capture display area 130. In addition, a display area 131 for indicating that the angle of view is changed by the up / down operation of the cross key 241 is displayed beside the capture display area 130. In the example shown in the figure, the maximum wide-angle field of view (WIDE) is currently indicated by an underline, and a triangular mark can be changed to standard (NORMAL) or maximum telephoto (TELE) by operating the cross key 241. It is shown that there is.

  Next, it is determined again whether or not the function key operation is detected, that is, whether or not the operation of the address book key 243 corresponding to the icon 129 for switching the zoom is detected (step S16). ). When the operation of the address book key 243 is detected, the standard field angle frame and the maximum telephoto field frame are deleted (step S18). That is, each time the function is operated, the standard field angle frame and the maximum telephoto field frame are displayed or deleted. Next, it is determined whether or not an operation of the determination key 242 (in this case, corresponding to the icon 128 for stopping moving image shooting) is detected (step S32). If the operation of the determination key 242 is not detected, Returning to step S10, as shown in FIG. 7 again, the image captured at the maximum wide-angle field angle (capture size S1) is displayed.

  On the other hand, when the operation of the address book key 243 for switching between the function key and the zoom is not detected, it is determined whether or not the operation of the cross key 241 for instructing the change of the angle of view is detected (step). S20). If the operation of the cross key 241 is not detected, it is determined whether or not the operation of the enter key 242 (in this case, corresponding to the icon 128 for stopping moving image shooting) is detected (step S32). If the operation of the key 242 is not detected, the process returns to step S10, and the image captured at the maximum wide-angle field angle (capture size S1) is displayed again as shown in FIG.

  On the other hand, when the operation of the cross key 241 is detected, the shooting size in the imaging region is changed according to the up / down operation direction of the cross key 241 (step S22), and the camera shake is adjusted in accordance with the changed shooting size. The correction range is changed (step S24). Then, the compression encoding process is performed while the camera shake correction process is performed according to the camera shake correction range, and the captured image is captured (step S26).

  Here, the camera shake correction process described above will be described. FIG. 5 is a flowchart for explaining the operation of the camera shake correction processing according to the present embodiment. First, an image of the imaging area is captured (step S40), and it is determined whether or not it is within the image stabilization range of the imaging area of the previous frame (step S42). The region to be generated is changed (step S44), and prediction processing / compression processing is performed (step S46). Thereafter, the process returns to the main routine. On the other hand, if it is not within the camera shake correction range, the camera shake correction range is reset (step S48), an I frame is generated from the imaging region (step S50), and then the process returns to the main routine.

  During the image capture, it is determined whether or not an operation of the cross key 241 for instructing a change in the angle of view is detected (step S28). If the operation of the cross key 241 is not detected, the moving image shooting is performed. It is determined whether or not the operation of the enter key 242 for stopping is detected (step S30). If the operation of the enter key 242 is not detected, the process returns to step S26, and the sign is obtained while performing the image stabilization process according to the image stabilization range. Continue to capture captured images.

  On the other hand, if the operation of the cross key 241 is detected while the image is being captured, the process returns to step S22, and the camera shake correction range setting table 21 is referred to according to the up / down operation direction of the cross key 241, thereby The camera capture size is changed, the camera shake correction range is changed in accordance with the changed camera capture size, the image stabilization process is performed according to the camera shake correction range, the encoding process is performed, and the captured image is continuously captured.

  For example, when the cross key 241 is operated to change to the standard angle of view, as shown in FIG. 9, the maximum field angle frame 170 indicating the shooting size S3 at the standard angle of view and the camera shake correction range S4 are shown. A camera shake correction frame 171 is displayed, and a maximum wide-angle field angle frame 160 indicating a capture size S3 at the maximum wide-angle field angle and a maximum telephoto angle-of-view frame 180 indicating a capture size S5 at the maximum telephoto field angle are displayed. To do. At this time, except for the capture size S3 at the standard angle of view, it is actually made translucent so that the subject imaged by the imaging device can be visually recognized.

  Further, for example, when the cross key 241 is operated to change to the maximum telephoto field angle, as shown in FIG. 10, the maximum field angle frame 180 indicating the shooting size S5 at the maximum telephoto field angle and the camera shake correction are performed. A camera shake correction frame 181 indicating the range S6 is displayed, a standard field angle frame 170 indicating the capture size S3 at the standard field angle, and a maximum telephoto field angle frame 180 indicating the capture size S5 at the maximum telephoto field angle. Is displayed. At this time, the region other than the capture size S5 at the maximum telephoto angle is actually made translucent so that the subject imaged by the imaging device can be visually recognized.

  9 and 10, a captured display area 130 in which a frame image that is actually captured is displayed is arranged below the display unit 23. In the example illustrated in FIG. 9, a frame image captured at a standard angle of view (capture size S <b> 3) is displayed in the capture display area 130. In the example shown in FIG. 10, a frame image captured at the maximum telephoto angle of view (capture size S5) is displayed in the capture display area 130.

  If the operation of the enter key 242 is detected, it is determined that the moving image shooting has been completed, the encoded image is stored as a file (step S34), and the process ends.

  According to the above-described embodiment, even if the shooting size is changed during movie shooting due to the zoom setting, the camera shake correction range is set and the camera shake correction is performed according to the shooting size. For example, even if an image is captured at the maximum telephoto angle of view (even if the capture range is substantially narrowed), camera shake correction corresponding to this angle of view can be performed. .

  In addition, since the maximum wide angle / standard angle of view / maximum telephoto angle of view can be switched with a simple operation (one push) during moving image shooting, it is possible to reduce camera shake caused by the zoom operation of the user.

  Also, during movie shooting, the capture size of each angle of view (maximum wide angle / standard angle of view / maximum telephoto angle of view) and the image stabilization range corresponding to each capture size are displayed in an identifiable manner. Therefore, it is possible to confirm at a glance which region (with which capture size) an image is currently captured and whether it is recorded as a moving image. Also, when zooming, it is possible to check at a glance which zoom value (maximum wide angle / standard field angle / maximum telephoto field angle) can be used to reliably capture (record) the desired subject. Can do.

  In the above embodiment, the case where the present invention is applied to a mobile phone has been described. However, the present invention is not limited thereto, and is applicable to any device that is small and portable and includes an imaging device. It goes without saying that.

It is a block diagram which shows the structure of the mobile telephone by embodiment of this invention. It is a conceptual diagram which shows the data structure of the camera-shake correction range setting table. FIG. 6 is a schematic diagram showing a camera shake correction range and a shooting size at each angle of view on the mobile phone according to the present embodiment. 4 is a flowchart for explaining the operation of the mobile phone 1 according to the present embodiment. It is a flowchart for demonstrating operation | movement of the camera-shake correction process by this embodiment. It is a schematic diagram which shows the display state before video recording (before recording start). It is a schematic diagram which shows the display state at the time of a video recording start. It is a schematic diagram which shows the display state at the time of zoom switching. It is a schematic diagram which shows the display state in a standard view angle. It is a schematic diagram which shows the display state in the maximum telephoto angle of view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Wireless communication processing part 11 Antenna 12 Voice encoding / decoding part 121 Speaker 122 Microphone 13 System memory 14 User memory 15 Imaging device 16 Optical lens 17 In-camera buffer 18 Frame buffer 19 Video encoding / decoding part 20 Control part 21 Camera shake correction range setting Table 22 Display control unit 23 Display unit 24 Key input unit 241 Cross key 242 Enter key 243 Address book key 244 Network connection key 245 Movie play key 246 Mail key 247 Numeric keypad

Claims (6)

Imaging means;
Storage means for storing a plurality of sets of captured sizes of captured images by the imaging means and correction ranges set in accordance with the captured sizes;
Setting means for arbitrarily selecting and setting the capture size from the capture sizes stored in the storage means;
Instruction means for instructing recording of a captured image by the imaging means;
When recording is instructed by the instruction unit, the correction range corresponding to the captured size set by the setting unit is read from the storage unit, and a plurality of captured images within the correction range are captured, and these captured images are captured. Correction means for correcting a captured image to be recorded based on a plurality of captured images;
An image pickup apparatus comprising: a recording unit that encodes and records the captured image corrected by the correction unit. Further comprising an instruction determination means for determining whether or not a change in capture size has been instructed;
When it is determined that the change of the shooting size is instructed by the instruction determination unit, the setting unit corrects the correction corresponding to the shooting size instructed to change among the plurality of correction ranges stored in the storage unit. The imaging apparatus according to claim 1, wherein the range is read and reset.   2. The display device according to claim 1, further comprising first display means for displaying a frame indicating the set captured size and a frame indicating a correction range corresponding to the captured size together with the captured image. 2. The imaging device according to 2.   And a second display means for displaying the captured image corresponding to the set captured size and the captured image within the correction range corresponding to the set captured size in an identifiable manner. The imaging device according to any one of claims 1 to 3. The instructing unit instructs recording of a moving image based on an image captured by the imaging unit,
When recording is instructed by the instruction unit, the correction unit reads a correction range corresponding to the captured size set by the setting unit from the storage unit, and sequentially captures a plurality of captured images within the correction range. 5. The image pickup apparatus according to claim 1, wherein the image pickup apparatus corrects the moving image with the set shooting size. Computer
A setting means for arbitrarily selecting and setting a capture size from a storage unit that stores a plurality of sets of capture sizes of images captured by the imaging unit in advance and correction ranges set in accordance with the capture sizes;
Instruction means for instructing recording of a captured image;
When recording is instructed by the instruction unit, the correction range corresponding to the captured size set from the storage unit is read out, a plurality of captured images within the correction range are captured, and the plurality of captured images captured Correction means for correcting a captured image to be recorded based on
An imaging program that functions as a recording unit that encodes and records a captured image corrected by the correction unit.