JP3389540B2 - Electronic camera - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic camera. [0002] An electronic camera is different from a silver halide camera,
The feature is that the image can be confirmed on the spot where the image was taken.
Taking advantage of these features, the LCD is automatically
There is also proposed an electronic camera having a function of displaying a photographed image (hereinafter, referred to as a rec view function). [0003] However, in continuous shooting in which a plurality of images are continuously photographed at a fixed short time interval, if the above-described rec view function is applied as it is, the usability is remarkably deteriorated. . In particular, in continuous shooting, an image that does not need to be recorded on a recording medium is often taken. However, when a photographed image is displayed in the above-described state, an image that needs to be recorded on a recording medium is taken. It is extremely difficult to distinguish between an image and an unnecessary image, and it becomes difficult to record only image data of an image that needs to be recorded on a recording medium. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. In an electronic camera having a rec view function, it is necessary to record (save) a plurality of images obtained by continuous shooting on a recording medium. It is an object of the present invention to provide an electronic camera capable of easily distinguishing an unnecessary image from an unnecessary image, and easily recording only image data of an image requiring recording on a recording medium. SUMMARY OF THE INVENTION The present invention is directed to an electronic camera capable of continuous photographing, comprising: an image pickup means for photoelectrically converting a subject image to generate electronic image data; Temporary storage means for temporarily storing a plurality of image data based on the obtained continuous shooting, recording means for recording the image data stored in the temporary storage means on a recording medium, and images recorded in the temporary storage means Simple image processing means for performing simple image processing for display on data; image display means for displaying a simple image on which the simple image processing has been performed; and image and image data for storing image data in a recording medium. Instructing means for distinguishing an image not stored in the recording medium from the image data obtained by the simple image processing means based on each image data obtained by the continuous shooting after the continuous shooting. The simplified image and controls to display on the image display means has, in parallel with the control, performs control so as to be recorded on the recording medium the image data obtained by continuous shooting by the recording means, the continuous shooting Among the obtained image data, for an image that has been distinguished not to store the image data based on the instruction of the instruction means, before recording the image data of the image that has been distinguished so as not to be stored on the recording medium, Control not to record the image data of the image that is distinguished not to be stored in the recording medium,
Even after the image data of the image that has been distinguished so as not to be stored is recorded on the recording medium, during the simple display period in which the simplified image of the image obtained by the continuous shooting is displayed, the image is distinguished so as not to be stored. Control means for controlling the image data of the image to be erased from the recording medium. An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram illustrating a configuration example of an electronic camera according to the present embodiment. The basic structure of the image pickup unit is the same as that of a normal electronic camera, and includes a lens unit 11, an image pickup device 12 including a photoelectric conversion element such as a CCD, an image pickup circuit 13, and an A / D conversion circuit 14. ing. That is, the lens unit 11
By subjecting the subject image formed as described above to photoelectric conversion by the imaging device 12 and inputting the photoelectrically converted image signal to the A / D conversion circuit 14 via the imaging circuit 13, a digitally converted image signal is obtained. It is configured as follows. System controller (Syscon) 15
Controls each part of the electronic camera.
It has an image processing function for performing white balance processing and matrix operation, and a compression / decompression function for compressing and decompressing image data. The buffer memory (DRAM) 16 temporarily stores image data and the like obtained by the image pickup unit, and stores a series of image data obtained by continuous shooting during continuous shooting. The buffer memory 16
Is also used as a work area for image processing such as white balance processing, and is also used as a work area for compression / expansion processing of image data and thinning processing for displaying an image. The memory interface 17 is a removable memory (memory card) 1 inserted into a card slot 18.
An interface for transmitting and receiving information to and from the removable memory 19 via the memory interface 17.
Is read from the image information. The video memory (VRAM) 20 holds display data. The display data held in the video memory 20 is sent to a video conversion circuit 21, which performs predetermined processing for displaying an image on an image display LCD 22. The image display LCD 22 performs normal display,
At the time of the rec view, simple display by image processing (gamma conversion processing or the like) simplified than normal display or multi-screen display is performed. Further, an output signal from the video conversion circuit 21 can be transmitted to an external device via a video-out terminal 23. The external interface 24 is an interface for communicating with an external device via an external input / output terminal 25.
Thus, various information such as image information can be transmitted to and received from an external device such as a personal computer. An operation unit 26 gives various instructions to the electronic camera, a release switch 26a, a shooting mode selection switch 26b for selecting various shooting modes (normal shooting mode, continuous shooting mode, etc.), and end of continuous shooting. A display / recording mode selection switch 26c that preselects various modes in the later rec view / card recording, and an unnecessary image selection switch (selects an image that does not require recording (saving) of image data on the memory card after continuous shooting is completed. Cancel switch) 26d, a display time interval setting switch 26e for setting a time interval for sequentially displaying a series of images obtained by continuous shooting in the rec view after continuous shooting, and a display time interval setting switch 26e for performing a desired selection operation on the screen. It comprises a cross key 26f and the like. Instead of the cancel switch (unnecessary image selection switch) 26d, a necessary image selection switch for selecting an image that requires recording of image data on the memory card may be provided. The mode display LCD 27 displays various modes, and the strobe light emitting unit 28 emits a strobe when performing flash photography. The power supply section 29 supplies power to each section of the electronic camera, and a battery 30 is connected to the power supply section 29. An external power supply can be connected to the power supply unit 29 via an external power supply terminal 31. Next, an operation example of this embodiment will be described with reference to FIG.
This will be described with reference to flowcharts shown in FIGS. In the flowchart of FIG. 2, it is assumed that the continuous shooting mode has been selected in advance by the shooting mode selection switch 26b of the operation unit 26 (S10). When the release switch 26a is turned on (S11), a predetermined imaging process is performed. That is, the image signal photoelectrically converted by the imaging device 12 is converted into an A / D signal through the imaging circuit 13.
The image data is input to the conversion circuit 14 and is output from the A / D conversion circuit 14 (S12). This image data is stored in the buffer memory 16 (S13). In this manner, until the release switch 26a is turned off,
Continuous shooting is performed at predetermined time intervals (continuous shooting is performed),
Each image data obtained by each shooting is stored in the buffer memory 16 (S14). When the continuous shooting is completed, the operation shifts to the operation of the display / recording modes 1 to 5 previously selected by the display / recording mode selection switch 26c of the operation unit 26 (S15 to S15).
S19). First, the operation when the display / recording mode 1 is selected will be described with reference to the flowchart of FIG. In this display / recording mode 1, (S10
0) After the continuous shooting is completed, the display (rec view) process and the card recording process are performed in parallel in time. In the simple display processing (S101), display is performed by simple display by image processing (γ conversion processing or the like) which is more simplified than normal display. That is, simplified image processing is performed on the image data of the captured image stored in the buffer memory 16, and a simplified display image is displayed on the image display LCD 22 based on the image processed image data. Each image (frame) obtained by continuous shooting is
The images are sequentially displayed on the image display LCD 22 at predetermined time intervals (in this example, the time interval t0 = 1 second). This time interval is variable, and a display time interval setting switch 26e
Is set in advance (S104, S106).
The photographer can see the image displayed on the image display LCD 22 and determine the image desired to record (save) the image data in the memory card (removable memory 19) and the image not desired. Designation of an image not desired to be recorded on the memory card, that is, designation of an unnecessary frame, can be performed by pressing the cancel switch 26d while the image is displayed on the image display LCD 22 (S1).
02, S103). When the cancel switch 26d is pressed, the display shifts to the display of the next frame before the display time (t0 = 1 second) elapses, so that the waiting time until the next frame is displayed is omitted. be able to. When the display of the last frame obtained by continuous shooting is completed (S105), the simple display ends (S107). After the display of the last frame is completed, the display may be performed cyclically again from the first frame. When displaying each image, zoom processing may be performed by the image processing function of the system controller 15 to enlarge and display the image at a predetermined magnification. The enlarged display makes it easy to check the focus. In the card recording process (S111), predetermined image processing (for example, formal γ conversion processing is performed instead of simplified γ conversion processing) is performed on the image data stored in the buffer memory 16; Further, JPEG compression processing and the like are performed, and the compressed image data is recorded on a memory card (removable memory 19) via the memory interface 17. Image data of each image (frame) obtained by continuous shooting is sequentially recorded on a memory card (S11).
5) When recording the image data of each frame on the memory card, if the recording unnecessary instruction is given in the simple display process (S112), the recording of the frame on the memory card is stopped (S113). ). In this way, the processing is sequentially performed up to the last frame (S114). Since the simple display process and the card recording process are performed independently and in parallel, a frame which has already been recorded on the memory card may be designated as an unnecessary frame after the recording is completed. . Further, after the process for the last frame is completed, an unnecessary frame may be instructed. Therefore, after the processing for the last frame is completed, it is determined again whether or not there is an unnecessary frame instruction, and thereafter, until the simple display ends, the determination as to whether or not there is an unnecessary frame instruction is continued (S116). For the frame designated as an unnecessary frame, the image data of the frame once recorded on the memory card is deleted, and the image data of the frame is not finally recorded (saved) on the memory card (S117). When the simple display period has elapsed (S118), the card recording process ends (S119),
The state shifts again to the photographable state (step S11 in FIG. 2). When the image data is stored in the memory card, identification information indicating that the image data to be recorded is image data obtained by continuous shooting may be recorded together. Specifically, information indicating continuous shooting is recorded in the header portion of the file of each image data.
Thus, by recording the identification information together, it becomes possible to collectively process image data obtained by continuous shooting. Next, the operation when the display / recording mode 2 is selected will be described with reference to the flowchart of FIG. Even in the display / recording mode 2 (S20
0) After the continuous shooting is completed, the display (rec view) process and the card recording process are performed in parallel in time. In the multi-screen display process (S201), a plurality of images obtained by continuous shooting are reduced to a small screen and displayed as a group image. That is, the image data stored in the buffer memory 16 is subjected to a multi-screen display process. For example, as shown in FIG. Is displayed. The photographer can determine the images desired to be recorded on the memory card (removable memory 19) and the images not desired by viewing the multi-screen display image displayed on the image display LCD 22. An image not desired to be recorded on the memory card, that is, an unnecessary frame can be selected by using the cross key 26f or the like. In the example of FIG. 8, each image (sequentially shot frame numbers SE1 to SE
In 5), a mark "E" is displayed at the lower left of the selected image (S202). In this manner, unnecessary frames can be selected on the screen, and the unnecessary frames can be designated by pressing the cancel switch 26d (S20).
3, S204). The designation of the unnecessary frame is accepted if it is within the display period of the multi-screen display (S205), and when the display period elapses, the multi-screen display ends (S20).
6). Each operation (S211 to S2) in the card recording process
219), the display / recording mode 1 shown in FIG.
(S111 to S119). That is, the image data of each frame obtained by continuous shooting is sequentially recorded on the memory card. However, for the frame for which recording is not required in the simple display processing, the recording of the image data on the memory card is stopped or the memory is stopped. The image data once recorded on the card is erased. As described above, in the display / recording modes 1 and 2, the photographed image is displayed after the end of continuous shooting, so that unnecessary images can be easily confirmed. In particular, in the display / recording mode 1, since the display is performed for each image by simple display, there is an advantage that the display range of one image is wide and the image is easy to see. Further, in the display / recording mode 2, since the images obtained by the continuous shooting are simultaneously displayed by the multi-screen display, there is an advantage that each image can be easily compared. In the display / recording modes 1 and 2, the display process and the card recording process are performed in parallel in time, so that the card recording process can be completed in a short time. Further, by giving an instruction to select an unnecessary image during the display period, it is possible to easily stop recording the image data on the memory card or delete the image data recorded on the memory card. Useless recording on the card can be prevented. Next, the operation when the display / recording mode 3 is selected will be described with reference to the flowchart of FIG. In this display / recording mode 3, (S30
0) After the continuous shooting is completed, a display (rec view) process is performed, and after the display process, a card recording process is performed. Each operation in the simple display process (S301 to S3)
07) is the same as each operation (S101 to S107) in the display / recording mode 1 shown in FIG. That is, the images (frames) obtained by continuous shooting are sequentially displayed on the image display LCD 22 at predetermined time intervals, and when the cancel switch 26d is pressed while the image is being displayed on the image display LCD 22, unnecessary images are obtained. The frame is specified. The card recording process is also performed in steps S311 to S3.
Regarding the operation of 315, S111 to S1 shown in FIG.
The operation is the same as the operation of No. 15. However, in this mode, since the card recording process is performed after the simple display process is completed, the operation of specifying unnecessary frames (S302, S303) has already been completed at the stage of starting the card recording process.
Therefore, steps S116 to S118 shown in FIG. 3 are omitted. Therefore, in the present mode, the card recording ends when the processing for the last frame ends (S316). Next, the operation when the display / recording mode 4 is selected will be described with reference to the flowchart of FIG. Even in this display / recording mode 4 (S40
0) After the continuous shooting is completed, a display (rec view) process is performed, and after the display process, a card recording process is performed. In the display processing, display is performed by multi-screen display. Each operation in the multi-screen display processing (S401)
To S406) are the same as the respective operations (S201 to S206) of the display / recording mode 2 shown in FIG. That is, the unnecessary frames are selected on the multi-screen and the unnecessary frames are designated by pressing the cancel switch 26d. As for the card recording process, S411-S
Regarding the operation of 415, S211 to S2 shown in FIG.
The operation is the same as the operation of No. 15. However, in this mode, since the card recording process is performed after the multi-screen display process ends, steps S216 to S218 shown in FIG. 4 are omitted, and the card recording ends when the process for the last frame ends. (S416). As described above, in the display / recording modes 3 and 4, similarly to the display / recording modes 1 and 2, the photographed image is displayed after the end of the continuous shooting, so that an unnecessary image can be easily determined. . Next, the operation when the display / recording mode 5 is selected will be described with reference to the flowchart of FIG. In this display / recording mode 5, (S50
0), no image display is performed, and immediately after the continuous shooting is completed, card recording processing is performed (S501). When the image data of each image obtained by continuous shooting is recorded on the memory card, the card recording is completed (S502), and the process returns to the photographing enabled state (step S11 in FIG. 2). In the example described above, the image display LC
Although an image obtained by continuous shooting is displayed on D22, shooting information at the time of continuous shooting may be displayed together with the image obtained by continuous shooting or alone.
Hereinafter, examples of such display will be described with reference to FIGS.
This will be described with reference to FIG. In the example shown in FIG. 9, the luminance information of each image (three images in this example) obtained by continuous shooting is displayed on the image display L.
This is displayed on the CD 22. FIGS. 9A to 9C show the luminance distribution of each image obtained by continuous shooting. The horizontal axis is A
The brightness of the pixels included in the measurement area E is shown, and the vertical axis shows the frequency of occurrence of each brightness. The measurement area may be the entire screen. In the case where continuous shooting is performed by intentionally changing the exposure condition and only the best result is recorded on a memory card, it may not be possible to perform a sufficient evaluation just by displaying an image. By displaying the luminance information as in the present example, accurate evaluation can be performed. In the example shown in FIG. 10, various pieces of photographing information of each image (three images in this example) obtained by continuous shooting are digitized and displayed on the image display LCD 22. In the "recording memory" portion, each image (NO
1 to NO3) are displayed on the memory card. In the “AF” portion, the AF evaluation amount of each shooting is quantified (100 is the highest value, and the higher the numerical value, the more the focus is achieved) and displayed. In the “AE” part,
The shutter speed and aperture value for each shooting are displayed.
In the “GV” portion, the flash emission amount of each shooting at the time of flash shooting is converted into a guide number and displayed. For example, when continuous shooting is performed with the focus changed consciously and only the best result is recorded on a memory card, it may not be possible to perform a sufficient evaluation simply by displaying an image. However, by displaying the numerical information as in this example, it is possible to perform an accurate evaluation. In the example shown in FIG. 11, for each image (three images in this example) obtained by continuous shooting, the focused area is displayed on the image display LCD 22 in an identifiable manner. For example, an image portion having a spatial frequency equal to or higher than a certain value is determined to be in focus, and that portion is displayed in an identifiable manner. It is possible to use a method of changing only the focused area to a special color and displaying it, or displaying it in halftone. In the example shown in the figure, (a) shows a state in which the person at the back left is in focus, (b) shows a state in which the person in front of the center is in focus, and (c) shows a state in which both persons are in focus. The incongruent states are shown, and the in-focus portion is displayed with the red component emphasized. As described above, by displaying shooting information at the time of continuous shooting on the screen, accurate evaluation can be performed even when evaluation is difficult with a shot image. Therefore, it is possible to easily select an image that does not need to be recorded on the memory card or an image that does not need to be recorded on the memory card. The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. According to the present invention, a photographed image is displayed after the end of continuous photographing, so that recording (storing) on a recording medium is performed.
Therefore, it is possible to easily distinguish an image that needs to be stored from an unnecessary image, and to easily record only image data of an image that needs to be recorded on a recording medium.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a system configuration example according to an embodiment of the present invention. FIG. 2 is a flowchart showing an operation example of the embodiment of the present invention. FIG. 3 is a flowchart showing an operation example when a display / recording mode 1 is selected in the embodiment of the present invention. FIG. 4 is a flowchart showing an operation example when a display / recording mode 2 is selected in the embodiment of the present invention. FIG. 5 is a flowchart showing an operation example when a display / recording mode 3 is selected in the embodiment of the present invention. FIG. 6 is a flowchart showing an operation example when a display / recording mode 4 is selected in the embodiment of the present invention. FIG. 7 is a flowchart showing an operation example when a display / recording mode 5 is selected in the embodiment of the present invention. FIG. 8 is an explanatory diagram showing an example of a multi-screen display when a display / recording mode 2 or a display / recording mode 4 is selected in the embodiment of the present invention. FIG. 9 is an explanatory diagram showing an example of a case where shooting information during continuous shooting is displayed in the embodiment of the present invention. FIG. 10 is an explanatory diagram showing another example of displaying shooting information during continuous shooting in the embodiment of the present invention. FIG. 11 is an explanatory diagram showing another example of displaying shooting information during continuous shooting in the embodiment of the present invention. [Description of Signs] 11 ... Lens unit 12 ... Imaging element 13 ... Imaging circuit 14 ... A / D conversion circuit 15 ... System controller 16 ... Buffer memory 17 ... Memory interface 18 ... Card slot 19 ... Removable memory 20 ... Video memory 21 ... Video conversion circuit 22 ... Image display LCD 23 ... Video out terminal 24 ... External interface 25 ... External input / output terminal 26 ... Operation unit 27 ... Mode display LCD 28 ... Strobe light emitting unit 29 ... Power supply unit 30 ... Battery 31 ... External power supply terminal

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04N 5/76-5/956 H04N 5/225

Claims (1)

(57) [Claim 1] An electronic camera capable of continuous photographing, comprising: an image pickup means for photoelectrically converting a subject image to generate electronic image data; Temporary storage means for temporarily storing a plurality of image data based on continuous shooting; recording means for recording the image data stored in the temporary storage means on a recording medium; and image data recorded in the temporary storage means. Simple image processing means for performing simple image processing for display, image display means for displaying a simple image on which the simple image processing has been performed, and an image for storing image data in a recording medium and a recording medium for storing image data Instruction means for distinguishing between images that are not stored in the camera and a simple image obtained by the processing of the simple image processing means based on each image data obtained by the continuous shooting after the continuous shooting. Line control so as to display the serial image display means
In parallel with the control, control is performed such that the image data obtained by the continuous shooting is recorded on a recording medium by the above-mentioned recording means, and each image obtained by the continuous shooting is controlled.
Among the data, the image data is
For images that are not stored
The image data of the image distinguished so as not to
Before recording, the image of the image that has been distinguished not to be stored
Controlling so that data is not recorded on the recording medium, and recording of image data of the image which is distinguished not to be stored.
Even after recording on the medium, obtained by continuous shooting
During the simplified display period in which the simplified image of the image is displayed,
The image data of the image that is distinguished not to be saved
An electronic camera, comprising: a control unit configured to perform control to erase data from the electronic camera.