JP2018207418A - Imaging apparatus - Google Patents

Abstract

To provide an imaging apparatus that creates an album moving image making it possible to grasp a correction effect of a captured image.SOLUTION: When creating an album moving image, a RAW image is developed with and without image correction. First, uncorrected images are recorded in predetermined frames, and subsequently corrected images are recorded in predetermined frames.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an imaging apparatus, a control method thereof, and a program.

  2. Description of the Related Art Some imaging devices such as conventional digital cameras create album moving images by selecting captured images.

  Japanese Patent Application Laid-Open No. 2004-151620 discloses a technique for cutting out a person and creating an album movie when the subject is a person.

Japanese Patent Laying-Open No. 2015-126525

  However, in the prior art disclosed in the above-mentioned Patent Document 1, it is not known how much image correction is applied to the captured image even when the album moving image is viewed.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an imaging apparatus that creates an album moving image capable of grasping the correction effect of a captured image.

In order to achieve the above object, an imaging apparatus according to the present invention includes:
Imaging means;
Recording means for storing a RAW image output from the imaging means in a recording medium;
Image correction data acquisition means for acquiring data for correcting a RAW image;
Comprising album creating means for creating one moving image from images stored in the recording medium;
When the album creating means creates a video from the RAW image,
Develop one RAW image with and without image correction,
First, record an image that has not been corrected for a given frame,
Subsequently, the image corrected image is recorded in a predetermined frame.

  ADVANTAGE OF THE INVENTION According to this invention, provision of the imaging device which enabled it to grasp | ascertain the correction effect of the image | photographed image by browsing an album moving image is realizable.

1 is an external view of a digital camera as an example of an imaging apparatus according to an embodiment. It is a block diagram which shows the structure of the digital camera by embodiment. 4 is a processing flow of album creation processing of the digital camera 100. It is a screen for selecting the type of album of the digital camera 100. It is a process flowchart of the album moving image creation process in a 1st Example. It is an example of the flame | frame recorded on the album moving image in a 1st Example. It is a process flowchart of the album moving image creation process in a 2nd Example. It is an example of the flame | frame recorded on the album moving image in a 2nd Example. It is a process flowchart of the album moving image creation process in a 3rd Example.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In the embodiments described below, a case where the apparatus and method according to the present invention are applied to an imaging apparatus which is a digital camera capable of capturing still images and moving images will be described as an example.

[Digital camera configuration]
FIG. 1 is an external view of a digital camera according to an embodiment.

  In FIG. 1A, reference numeral 28 denotes a display unit that displays images and various types of information. Reference numeral 72 denotes a power switch that switches between power on and power off. Reference numeral 60 denotes a mode switching switch for switching various modes in the digital camera 100. More specifically, modes such as a still image recording mode and a moving image recording mode can be switched.

  Reference numeral 70 denotes an operation unit that accepts various operations from the user. The operation unit 70 includes various buttons illustrated and operation members such as a touch panel provided on the screen of the image display unit 28. Specific examples of the various buttons of the operation unit 70 include a play button, a delete button, a menu button, a SET button, a four-way button (up button, down button, right button, left button) arranged in a cross, a wheel. 73 etc. Reference numeral 200 denotes a recording medium such as a memory card or a hard disk. A recording medium slot 201 stores the recording medium 200. The recording medium 200 stored in the recording medium slot 201 can communicate with the digital camera 100. Reference numeral 202 denotes a lid of the recording medium slot 201.

  In FIG. 1B, 61 is a shutter button, and 103 is an interchangeable lens.

  FIG. 2 is a block diagram illustrating a configuration example of the digital camera 100 according to the present embodiment.

  In FIG. 2, reference numeral 103 denotes a photographing lens, 101 denotes a shutter having a diaphragm function, and 22 denotes an imaging unit including a CCD or a CMOS element that converts an optical image into an electrical signal. Reference numeral 23 denotes an A / D converter that converts an analog signal into a digital signal. The A / D converter 23 is used when an analog signal output from the imaging unit 22 is converted into a digital signal, or when an analog signal output from the audio control unit 11 is converted into a digital signal.

  A timing generation unit 12 supplies a clock signal and a control signal to the imaging unit 22, the audio control unit 11, the A / D converter 23, and the D / A converter 13. The timing generator 12 is controlled by the memory controller 15 and the system controller 50. An image processing unit 24 performs resize processing such as predetermined pixel interpolation and reduction and color conversion processing on the data from the A / D converter 23 or the data from the memory control unit 15. The image processing unit 24 performs predetermined calculation processing using the captured image data, and the system control unit 50 performs exposure control and distance measurement control based on the obtained calculation result. Thereby, AF (autofocus) processing, AE (automatic exposure) processing, and EF (flash pre-emission) processing of the TTL (through-the-lens) method are performed. The image processing unit 24 further performs predetermined calculation processing using the captured image data, and also performs TTL AWB (auto white balance) processing based on the obtained calculation result.

  Output data from the A / D converter 23 is written into the memory 32 via the image processing unit 24 and the memory control unit 15 or directly via the memory control unit 15. The memory 32 stores image data obtained by the imaging unit 22 and converted into digital data by the A / D converter 23 and image data to be displayed on the image display unit 28. Note that the memory 32 is also used to store audio data recorded by the microphone 10, a still image, a moving image, and a file header when configuring an image file. Therefore, the memory 32 has a storage capacity sufficient to store a predetermined number of still images, a moving image and sound for a predetermined time.

  The compression / decompression unit 16 compresses and decompresses image data by adaptive discrete cosine transform (ADCT) or the like. The compression / decompression unit 16 reads the captured image stored in the memory 32 using the shutter 101 as a trigger, performs compression processing, and writes the processed data in the memory 32. Further, the compressed image read into the memory 32 from the recording unit 19 or the like of the recording medium 200 is expanded, and the processed data is written into the memory 32. The image data written to the memory 32 by the compression / decompression unit 16 is filed in the file unit of the system control unit 50 and recorded on the recording medium 200 via the interface 18. The memory 32 also serves as an image display memory (video memory). A D / A converter 13 converts image display data stored in the memory 32 into an analog signal and supplies the analog signal to the image display unit 28. Reference numeral 28 denotes an image display unit, which performs display in accordance with an analog signal from the A / D converter 23 on a display such as an LCD. Thus, the display image data written in the memory 32 is displayed by the image display unit 28 via the D / A converter 13.

  Reference numeral 10 denotes a microphone. The audio signal output from the microphone 10 is supplied to the A / D converter 23 via the audio control unit 11 configured by an amplifier or the like, converted into a digital signal by the A / D converter 23, and then subjected to memory control. The data is stored in the memory 32 by the unit 15. On the other hand, the audio data recorded on the recording medium 200 is read into the memory 32 and then converted into an analog signal by the D / A converter 13. The voice control unit 11 drives the speaker 39 by this analog signal and outputs a voice.

  The nonvolatile memory 56 is an electrically erasable / recordable memory, and for example, an EEPROM or the like is used. The nonvolatile memory 56 stores constants, programs, and the like for operating the system control unit 50. Here, the program is a program for executing various flowcharts described later in the present embodiment.

  Reference numeral 50 denotes a system control unit that controls the entire digital camera 100. The system control unit 50 implements each process of the present embodiment to be described later by executing the program recorded in the nonvolatile memory 56 described above. A system memory 52 is a RAM. In the system memory 52, constants and variables for operation of the system control unit 50, programs read from the nonvolatile memory 56, and the like are expanded.

The mode switch 60, the first shutter switch 62, the second shutter switch 64, and the operation unit 70 are operation means for inputting various operation instructions to the system control unit 50.
The mode switch 60 can switch the operation mode of the system control unit 50 to either a still image recording mode or a moving image recording mode. The first shutter switch 62 is turned on while the shutter button 61 provided in the digital camera 100 is being operated (half-pressed) to generate a first shutter switch signal SW1. The system control unit 50 starts operations such as AF (autofocus) processing, AE (automatic exposure) processing, AWB (auto white balance) processing, and EF (flash pre-emission) processing in response to the first shutter switch signal SW1.

  The second shutter switch 64 is turned on when the operation of the shutter button 61 is completed (fully pressed) and generates a second shutter switch signal SW2. In response to the second shutter switch signal SW2, the system control unit 50 starts a series of shooting processing operations from reading a signal from the imaging unit 22 to writing image data on the recording medium 200.

  Each operation member of the operation unit 70 is appropriately assigned a function for each scene by selecting and operating various function icons displayed on the image display unit 28, and functions as various function buttons. Examples of the function buttons include an end button, a return button, an image advance button, a jump button, a narrowing button, and an attribute change button. For example, when the menu button is pressed, a menu screen on which various settings can be made is displayed on the image display unit 28. The user can make various settings intuitively using the menu screen displayed on the image display unit 28, the four-way button, and the SET button. The power switch 72 switches between power on and power off.

  A power control unit 80 includes a battery detection circuit, a DC-DC converter, a switch circuit that switches a block to be energized, and the like, and detects whether or not a battery is attached, the type of battery, and the remaining battery level. Further, the power control unit 80 controls the DC-DC converter based on the detection result and an instruction from the system control unit 50, and supplies a necessary voltage to each unit including the recording medium 200 for a necessary period.

  A power supply unit 30 includes a primary battery such as an alkaline battery or a lithium battery, a secondary battery such as a NiCd battery, a NiMH battery, or a Li battery, an AC adapter, or the like. Reference numerals 33 and 34 denote connectors, which connect the power supply unit 30 and the power supply control unit 80.

  Reference numeral 40 denotes a shake amount detection unit, which includes an angular velocity sensor and a gyro sensor. Detects camera shake and other camera shake, and detects the direction and amount of camera shake.

  Reference numeral 18 denotes an interface with a recording medium 200 such as a memory card or a hard disk. Reference numeral 35 denotes a connector for connecting the recording medium 200 and the interface 18.

  A recording medium attachment / detachment detection unit 98 detects whether or not the recording medium 200 is attached to the connector 35.

  Reference numeral 200 denotes a recording medium such as a memory card or a hard disk. The recording medium 200 includes a recording unit 19 composed of a semiconductor memory, a magnetic disk, and the like, an interface 37 with the digital camera 100, and a connector 36 for connecting the recording medium 200 and the digital camera 100.

  The communication unit 110 performs various communication processes such as RS232C, USB, IEEE1394, P1284, SCSI, modem, LAN, and wireless communication. A connector (antenna in the case of wireless communication) 112 connects the digital camera 100 to another device via the communication unit 110.

  The album creation process of the digital camera 100 according to the first embodiment of the present invention will be described below with reference to FIGS.

  The digital camera 100 has a function of generating a single moving image by combining a still image file and a moving image file recorded on the recording medium 200 so as to be reproduced in a predetermined order. One moving image generated in this way is called an album in this embodiment. In the present embodiment, an album is selected from a file automatically selected by the system control unit 50 according to a predetermined condition from a still image file or a moving image file recorded on the recording medium 200, or a file selected by a user instruction. Is generated.

  FIG. 3 is a flowchart of the album creation process.

  First, the system control unit 50 determines an album creation method in S301. The system control unit 50 displays a screen as shown in FIG. 4 on the display unit 28, and creates an album by a method selected by the user of the digital camera 100. FIG. 4 shows an example of a screen in which the user of the digital camera 100 instructs the digital camera 100 to create an album with images taken on the date of July 1, 2016.

  Next, the system control unit 50 selects an image for creating an album by the method instructed in S301 (S302). Thereafter, the system control unit 50 creates an album moving image (S303). Details of the album moving image creation processing will be described later with reference to FIG.

  FIG. 5 is a detailed process flow of the album moving image creation process (S303) of FIG.

  The system control unit 50 first creates an empty moving image file (S501). The moving image file created here includes various types of management information, and since this management information is widely known, it will not be described here.

  Next, the system control unit 50 acquires a list of album creation images selected in S302 of FIG. 3 (S502), and selects the first file from them (S503). It is determined whether or not the selected image is a RAW image (S504). If the selected image is a RAW image, the process proceeds to S505. This RAW image includes image data acquired from the imaging unit 22 and correction data of the interchangeable lens 103. The correction data of the interchangeable lens 103 includes, for example, distortion correction data and peripheral light amount data.

  Next, the system control unit 50 develops the RAW image (S505). At that time, the image is developed without using the lens correction data. After that, the process proceeds to S506, and this time, the lens correction data is used to develop the lens corrected image.

  Next, the system control unit 50 writes the image data (without lens correction) developed in S505 for a predetermined frame into the moving image file created in S501 (S507). At that time, the image data is written and the management information of the moving image file is changed. Thereafter, the process proceeds to S508, and this time, lens correction is performed and the developed image data is written in the moving image file.

  FIG. 6 is an example of a moving image obtained as a result of performing the processing of S504 to S508.

  6A shows distortion (barrel aberration) correction, and FIG. 6B shows peripheral light amount correction. Reference numerals 601 and S603 denote images obtained by developing a RAW image without using lens correction data in S505, and reference numerals 602 and S604 denote images obtained by performing lens correction using lens correction data in S506 and developing the RAW image. As a result, a moving image that changes from an image that has not undergone lens correction to an image that has undergone lens correction is recorded in the moving image for the album. Of course, in S506, an image subjected to both distortion correction and peripheral light amount correction may be developed.

  When the system control unit 50 determines that the file selected in S504 is not a RAW image but a JPEG image, for example, the system control unit 50 decodes the image (S509), and creates the decoded image for a predetermined frame in S501. (S501).

  When the processing of S508 or S510 is completed, the system control unit determines whether all the images of the album creation images acquired in S502 have been converted into moving image files (S511). If all images have been converted to moving images, the process ends. If there are still files to be converted into album moving images, the process returns to S504.

  As described above, according to the first embodiment, the user of the digital camera 100 can grasp the effect of the lens correction by browsing the album moving image. Furthermore, it is possible to grasp characteristics such as distortion and the amount of peripheral light of the mounted lens 103. In particular, in a digital camera such as a single-lens reflex camera in which the lens can be exchanged, it is possible to create an album moving image that matches the characteristics of the attached lens.

  Hereinafter, the album creating process of the digital camera 100 according to the second embodiment of the present invention will be described with reference to FIGS.

  FIG. 7 is a flowchart of album creation processing according to the second embodiment. S501 to S506 and S509 to S512 in FIG. 7 are the same as those in FIG. 5 and will not be described here. The difference between FIG. 5 and FIG. 7 is S701.

  In step S701, the system control unit 50 creates a frame subjected to interpolation processing so that the lens correction image developed in step S506 is gradually switched from the image without lens correction developed in step S505, and is used as an album moving image. save.

  FIG. 8 is an example of a frame image when interpolation processing is performed so that an image that has not been subjected to peripheral light amount correction is gradually switched to an image that has been corrected.

  Reference numeral 801 denotes an uncorrected image, reference numeral 803 denotes a corrected image, and reference numeral 802 denotes an intermediate image between 801 and 803. By creating such a frame, it is possible to create an album moving image in which images are gradually switched.

  Hereinafter, the album creating process of the digital camera 100 according to the second embodiment of the present invention will be described with reference to FIG. S501 to S504 and S507 to S512 in FIG. 9 are the same as those in FIG. 5 and will not be described here. The difference between FIG. 5 and FIG. 7 is S901 and S902.

  The system control unit 50 records the blur amount and the blur direction output from the blur amount detection unit 40 together with the image data from the imaging unit 22 during RAW image recording. Thereafter, in the album moving image creation process of FIG. 9, the system control unit 50 first develops the RAW image without blur correction (S901). Next, the RAW image is developed with blur correction (S902).

  As a result, as an album moving image, an image without blur correction is displayed first, and then an image subjected to blur correction is displayed. Therefore, the user of the digital camera 100 can check the effect of blur correction by browsing the album moving image. Further, as described in the second embodiment, it is of course possible to create an album moving image that gradually switches from an image without blur correction to an image with blur correction.

  In the first to third embodiments, an image without correction such as lens correction is first developed and displayed. However, for example, in the case of peripheral light amount correction, which part is corrected by developing the four corners darker than the actually recorded image rather than the central part so that the way of decreasing the peripheral light amount is more conspicuous. You may comprise so that the user of the digital camera 100 may become easy to grasp.

  In the first to third embodiments, the image to be corrected is described as a still image, but it may be a moving image.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment, A various deformation | transformation and change are possible within the range of the summary.

28 display section, 72 power switch, 60 mode selector switch,
100 digital camera

Claims (5)

Imaging means;
Recording means for storing a RAW image output from the imaging means in a recording medium;
Image correction data acquisition means for acquiring data for correcting a RAW image;
Comprising album creating means for creating one moving image from images stored in the recording medium;
When the album creating means creates a video from the RAW image,
Develop one RAW image with and without image correction,
First, record an image that has not been corrected for a given frame,
Subsequently, an image pickup apparatus characterized in that the image corrected image is recorded in a predetermined frame. The imaging apparatus according to claim 1, wherein the data acquired by the image correction data acquisition unit is a lens characteristic. The imaging apparatus according to claim 1, wherein the album creating unit creates a moving image that has undergone an interpolation process that gradually changes from an image that has not been corrected to an image that has been corrected. The imaging apparatus according to claim 1, wherein the data acquired by the image correction data acquisition unit is blur information. The imaging apparatus according to claim 1, wherein the RAW image is a still image or a moving image.