JP4233624B2 - Electronic camera device - Google Patents

Electronic camera device Download PDF

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Publication number
JP4233624B2
JP4233624B2 JP36870497A JP36870497A JP4233624B2 JP 4233624 B2 JP4233624 B2 JP 4233624B2 JP 36870497 A JP36870497 A JP 36870497A JP 36870497 A JP36870497 A JP 36870497A JP 4233624 B2 JP4233624 B2 JP 4233624B2
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Japan
Prior art keywords
image
recording
still image
focus
means
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Expired - Fee Related
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JP36870497A
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JPH11196301A (en
Inventor
英貴 中村
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カシオ計算機株式会社
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Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic camera device having a display device for displaying a captured subject image.
[0002]
[Prior art]
There is an electronic camera device having a display device for monitoring, such as a digital camera.
The subject image captured by the digital camera is subjected to photoelectric conversion, signal conversion, signal processing, etc. by a CCD or the like to display a monitor image (through image) of the subject, and shooting is performed when the user presses the shutter at a desired timing. The image data is recorded and stored in a storage medium (recording mode). In addition, image information recorded and stored in a recording medium can be read out and displayed on a display device such as a liquid crystal display or output to an external device (playback mode).
[0003]
[Problems to be solved by the invention]
In the above-described digital camera, since the resolution of the through image (or captured image) displayed on the display device is usually lower than the resolution of the captured image recorded and stored in the recording medium, it is displayed as an image having a lower definition than the recorded image. . Here, taking a model of a commercially available digital camera as an example, the resolution of the captured image is 640 × 480, and the resolution of the through image is 220 × 279.
[0004]
For this reason, when the user presses the shutter, even if the photographed image is out of focus due to camera shake or the like, it may not be determined from the image displayed on the display device at that time (the degree of out-of-focus is the through image) In other words, it can be determined if it can be determined even with a resolution of 3).
[0005]
There is a digital camera provided with a function capable of enlarging and displaying a part of an image when displaying an image (reproduced image) in the reproduction mode. When such a digital camera is used, the user can confirm the focus by partially enlarging the reproduced image. However, in this case, shooting is performed in the recording mode, and after the recorded image is recorded and saved, the recording mode is switched to the playback mode, and the recorded image is played back / enlarged to confirm the focus. There is a problem in that it is troublesome for the user to check the focus, because it is necessary to take a procedure of switching and re-shooting, and it takes time to record and save the recorded image.
[0006]
The present invention has been made to solve the above problems, and an object of the present invention is to provide an electronic camera device that can easily check the focus of an image at the time of shooting and check the image state such as blurring. .
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides: An autofocus mechanism, Still image photographing means for photographing a still image, still image recording instruction means for instructing recording of a still image, and when recording of a still image is instructed by the still image recording instruction means, the still image photographing means is photographed. A recording control means for recording the still image on the recording means, and a display means for displaying a part of the still image recorded on the recording means by the recording control means when the recording of the still image is instructed by the still image recording instruction means. Display control means for enlarging the display The display control means automatically enlarges and displays an image portion corresponding to the autofocus position focused by the autofocus mechanism when the still image recording instruction means instructs to record a still image. It is characterized by that.
[0008]
In the electronic camera device of the present invention, when the display control unit is instructed to record a still image by the still image recording instruction unit, Instead of the entire still image recorded on the recording means by the recording control means, an image portion corresponding to the autofocus position of the still image is enlarged and displayed. You may do it.
In the electronic camera device of the present invention, the display control means may display the entire still image recorded on the recording means by the recording control means when the still image recording instruction means instructs the recording of the still image. After displaying for a predetermined time, the still image Image portion corresponding to the autofocus position Zoom in Make You may do it.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
<Circuit configuration example>
FIG. 1 is a block diagram showing a circuit configuration example of a digital camera as an embodiment of the electronic camera device of the present invention. In the digital camera 100, a lens block 50 and a camera body 60 are connected via a connection unit 70. Become.
In FIG. 1, a lens block 50 includes an imaging lens 1, an automatic aperture mechanism 7 and an optical system 10 including a focusing mechanism 8, a CCD (Charge Coupled Device) 2, an amplifier 3, and an A / D conversion circuit 4 as an imaging element. , And a CCD drive circuit 5, and the imaging lens 1 is configured to form an optical image taken from a subject (not shown) on the CCD 2. Further, the CCD 2 photoelectrically converts the light incident from the imaging lens 1, outputs it to the A / D conversion circuit 4 via the amplifier 3, performs A / D conversion, and then passes from the terminal 71 of the connection unit 70 to the camera body 60. It is configured to output. The drive circuit 5 drives the CCD 2 when a control signal is input from the camera body 60 via the terminal 72 of the connection unit 70.
[0014]
The camera body 60 includes a timing generator 12, a DRAM (Dynamic Random Access Memory) 13, a flash memory 14, a compression / expansion circuit 15, a signal generator 16, a VRAM (Video Random Access Memory) 17, a D / A conversion circuit 18, and an amplifier 19. , A control unit 20, an operation unit 30, a liquid crystal display (LCD) 40 as a display unit and finder, and an I / O port 25, and from the A / D conversion circuit 4 through a terminal 71 of the connection unit 70. An image signal is supplied to the timing generator 12.
[0015]
The timing generator 12 controls the drive circuit 5 via the terminal unit 72 to drive the CCD 2 and writes the image data supplied from the A / D conversion circuit 4 into the DRAM 13. The image data from the CCD 2 written to the DRAM 13 has yellow (Ye), cyan (Cy), and green (Gr) color components.
[0016]
The DRAM 13 has an area for temporarily storing image data and a work area such as an image enlargement work area when executing the focus position enlargement process of the present invention. Also, the image data written in the DRAM 13 is compressed by the compression / expansion circuit 15, written in the flash memory 14 and recorded.
[0017]
The image data written in the DRAM 13 is also read from the image data and supplied to the signal generator 16, and after white balance adjustment is performed, color calculation processing is performed to obtain a luminance signal Y and a color difference signal RY. , B-Y is generated and stored in the VRAM 17.
[0018]
The signal generator 16 also reads out the image data stored in the VRAM 17, outputs it to the D / A conversion circuit 18, performs D / A conversion, and then outputs it to the liquid crystal display 40 via the amplifier 19 to display the image. Note that the video signal output from the amplifier 19 can also be output to an external device (not shown).
[0019]
The control unit 20 includes a CPU 21, a RAM 22, and a ROM 23. The CPU 21 is connected to each of the above-described circuits and a power supply switch (not shown) via a bus line, and a digital camera is controlled by a control program stored in the ROM 23. In addition to controlling the entire system 100, execution control of each function of the digital camera 100 in response to a status signal from the operation unit 30, for example, execution control of each mode process by execution of each mode processing means stored in the ROM 23 In addition, an enlarged display of a focus position of a through image or a captured image according to the present invention is executed.
The RAM 22 appropriately stores programs and data necessary for the CPU 21 to execute various processes.
[0020]
The operation unit 30 includes various function buttons, cursor movement buttons, various buttons such as a power switch, and input keys in addition to the focus position zoom button 36 and the shutter button 37 shown in FIG. 3 and is operated by the user. Then, a corresponding signal is sent to the CPU 21.
[0021]
[Example with auto focus mechanism]
FIG. 2 shows an example in which the focusing mechanism 8 of the digital camera 100 is an autofocus mechanism. The autofocus mechanism 8 is driven by a lens drive signal and moves a lens driving unit (for example, back and forth). , A step motor) 121 and a lens drive control unit 122 that supplies a lens drive signal to the lens drive unit 121 by an AF control signal from the control unit 20. Then, the autofocus mechanism 8 gives the moving distance ΣΔX of the imaging lens 1 and the angle of view information to the control unit 20 and receives an AF (autofocus) control signal from the control unit 20.
[0022]
<External appearance example>
FIG. 3 is an external view showing an example of the back external appearance of the digital camera 100.
On the upper surface of the main body 60 of the digital camera 100, function buttons 31 to 33 for function selection, a plus button 34, a minus button 35, a button 36 serving as a focus position zoom button in a recording mode, and a shutter button 37 are disposed. On the rear side, a cursor moving key 38 and a liquid crystal display unit 40 including a liquid crystal display element are disposed. In addition, an imaging unit in which the imaging lens 1 is arranged is provided on the front surface (not shown) of the lens block 50.
[0023]
Further, on the side surface (not shown) on the main body 60 side, a focus adjustment button is provided in addition to a processing mode switching switch and a color adjustment button for switching between a recording mode and a reproduction mode when the camera is a manual focus system. In addition, a video output terminal, a power supply port, and the like are provided at the bottom (not shown).
[0024]
The digital camera 100 has a recording mode and a playback mode, and switching between the recording mode and the playback mode is performed by switching a processing mode switching switch (not shown) provided on the side surface.
Note that branching to each mode and execution of a function by operating the processing mode changeover switch and various keys and buttons are performed by examining a status signal sent from the operation unit 30 to the CPU 21 by operating each button or the like. This is performed by a mode determination module (configured by a program in the embodiment) that branches to a program.
[0025]
<Confirmation of image>
In the electronic camera device of the present invention, the focus position is partially enlarged and displayed in the recording mode, so that it is possible to easily confirm the image state such as focus confirmation and blurring. In each of the following embodiments, a focus frame for in-focus confirmation is displayed on the liquid crystal display 40 at the time of manual focus or autofocus as the focus position, and the portion corresponding to the focus frame is set as the focus position.
Hereinafter, the case of manual focus (Examples 1 and 2) and autofocus (Example 3) will be described using the digital camera 100 of FIG. 1 as an example.
[0026]
[Example 1] Manual focus
FIG. 4 is a flowchart showing an example of the operation of the digital camera 100 in which manual focus adjustment (manual focus) is performed as an example. Manual focus is performed by a user who looks at a through image displayed in a recording mode. This is done by operating the focus adjustment button. Further, the focus confirmation is performed by the user based on the focus position of the through image to be enlarged and displayed. FIG. 5 is an explanatory diagram of a through image and an enlarged through image displayed during manual focus.
[0027]
When the user switches the processing mode change switch provided on the side surface of the digital camera 100 to the “recording mode” side in S <b> 1 of FIG. 4, a status signal to that effect is sent to the CPU 21. If the received status signal means execution of the recording mode, the CPU 21 starts capturing the subject image.
[0028]
In S2, through image display of one frame of image data periodically fetched from the CCD 2 is started on the liquid crystal display 40 (FIG. 5A). As a result, the user can adjust the angle by moving the camera while viewing the composition and color of the entire image. A focus confirmation rectangular frame 81 is displayed at the center of the screen.
[0029]
Specifically, in FIG. 1, the CPU 21 first controls the timing generator 12 to capture a subject image. When the timing generator 12 receives the monitor instruction signal from the CPU 21, it drives the CCD drive circuit 5 via the terminal 72 and causes the CCD 2 to capture image data. Since the subject image with the user facing the imaging lens 1 is formed on the CCD 2 via the imaging lens 1, the image signal photoelectrically converted by the CCD 2 when the CCD 2 is driven by the CCD drive circuit 5. Is input to the A / D conversion circuit 4.
The A / D conversion circuit 4 performs A / D conversion on the input image signal and supplies it to the timing generator 12 via a terminal 71. The timing generator 12 temporarily stores the input image data (Ye, Cy, Gr) in the DRAM 13. The CPU 21 reads the image data once stored in the DRAM 13 and supplies it to the signal generator 16.
[0030]
The signal generator 16 adjusts the white balance of the image data, encodes it to generate video data (Y, RY, BY), and draws it on the VRAM 17. The signal generator 16 also reads out the video data drawn in the VRAM 17 and supplies it to the D / A conversion circuit 18.
The D / A conversion circuit 18 D / A converts this video data, outputs it to the liquid crystal display 40 via the amplifier 19, and displays it. In this way, an image (through image) 80 monitored by the user via the imaging lens 1 is displayed on the liquid crystal display 40. In this case, since it is necessary to display a subject image in real time, luminance data and color difference data are generated using only the Ye component of the image data stored in the DRAM 13, for example, as video data. Displayed on the liquid crystal display 40. As a result, it is possible to quickly update and display an image (that is, a through image) that changes every moment through the imaging lens 1. In addition, when the user is not satisfied with the composition, the user can correct the composition by changing the angle of the camera.
[0031]
When the user presses the focus position enlargement button 36 in S3, the focus position enlargement display means of the program modules stored in the ROM 23 is read out. As shown in FIG. 5B ′, when the entire image 80 including the focus position and the enlarged image 83 at the focus position are distinguished on the screen and displayed in a superimposed manner, step S3 can be omitted.
That is, instead of steps S2 to S4, a step of performing the display shown in FIG. 5 (b ′) may be provided.
[0032]
In S4, enlarged display of the focus position of the through image displayed in S2 (the portion corresponding to the focus frame 81 in the center of the screen) is started. The display position when the enlarged focus position image 82 is displayed on a part of the screen may be centered on the focus position (FIG. 5B), or a predetermined place on the screen (for example, any one of the four corners). (Fig. 5 (b ')).
[0033]
Specifically, it is indicated by rectangles {(i−Δa, j + Δb), (i + Δa, j + Δb), (i−Δa, j−Δb), (i + Δa, j−Δb) surrounding the center (i, j) of the screen. The inside of the focus frame 81 (FIG. 5A) is enlarged and displayed as an enlarged image 82 by the focus position enlargement display means.
The focus position enlargement display means takes out the through image data on the DRAM 13 and stores it in the image enlargement work area, and then uses an enlargement method such as an interpolation method for a portion corresponding to the image portion surrounded by the focus frame 81. The image data is enlarged and read out and supplied to the signal generator 16 to perform white balance adjustment and color calculation processing to generate video data including a luminance signal Y, color difference signals RY and BY, It is stored in the VRAM 17.
[0034]
The signal generator 16 also reads out the image data stored in the VRAM 17 and outputs it to the liquid crystal display 40 to display the image. Thereby, an enlarged image 82 at the focus position can be displayed on the screen.
In the embodiment, the enlargement magnification is a fixed magnification and is 4 × 4 (= 16) times the size of the focus frame 81 shown at the time of monitoring, but a variable magnification (for example, 2 × 2, 3 × 3, 4 × 4). The magnification may change (circulate) each time the plus button 35 is pressed once.
[0035]
Further, the focus position enlargement display means may be configured so that the display position of the enlarged image 82 is different from the focus position as shown in FIG. In this case, the focus position enlargement display means extracts the image data portion corresponding to the focus frame 81 from the through image data on the DRAM 13 and enlarges it using an enlargement method such as an interpolation method, and displays it in the image enlargement work area provided in the DRAM 13. After being stored, it is read out and supplied to the signal generator 16 to perform white balance adjustment and color calculation processing to generate video data composed of a luminance signal Y and color difference signals RY and BY.
[0036]
The signal generator 16 also reads the enlarged image data stored in the VRAM 17 and displays the image so as to be overlaid at a predetermined position (for example, the lower right corner) of the screen of the liquid crystal display 40. As a result, an enlarged image 83 at the focus position is displayed in the right corner of the screen so as to overlap with the through image as shown in FIG.
[0037]
In S5, the user confirms the focus by looking at the through image or the enlarged image 82 (or 83) at the focus position. If the focus is not achieved, the process proceeds to S6. If the focus is achieved, the process proceeds to S7. To do.
In S6, the user operates a focus adjustment button (not shown) to give a focus adjustment instruction to the focusing mechanism 8 and returns to S3.
[0038]
If the shutter button 37 is pressed in S7, the process proceeds to S8 for image recording and saving processing. In addition, if the user does not press the shutter button 37 even if focus is achieved, the through image of the subject image + the enlarged image 82 is still displayed (when the enlargement button is pressed in S3). When the user changes the angle of the camera or points the camera toward another subject image, the above steps S2 to S6 are repeated.
[0039]
Next, since it takes several seconds from the time when the shutter button 37 is pressed down to take an image to the end of recording and saving, the CPU 21 uses the signal generator 16 to store the image data (through image data when the shutter is pressed) stored in the DRAM 13 in S8. The video data is generated more accurately using all of the Ye component, the Cy component, and the Gr component, and displayed as a still image 84 on the liquid crystal display 40. The user can check the composition and color of the entire screen by looking at the displayed still image 84 (FIG. 5C).
[0040]
In S9, the CPU 21 supplies the video data to the compression / decompression circuit 15, and executes compression processing by, for example, JPEG (Joint Photographic Experts Group). The compressed video data is recorded in the flash memory 14. When the writing of the image data for one image is completed, the process is terminated.
[0041]
By enlarging and displaying the focus position of the through image in steps S3 to S6, since it is possible to focus at the image monitoring stage, the trouble of reproduction, enlargement, and re-shooting as in a conventional digital camera is eliminated.
In this embodiment, the image portion to be magnified is centered on the screen. However, since the focus position is changed by the focus operation in S6, the focus position is enlarged and displayed. Also good. In this way, the focus position can be arbitrarily determined, and the user can perform a shutter operation after confirming that a desired image portion is enlarged and displayed and in focus.
[0042]
[Embodiment 2] Confirmation of focus, etc. by captured image (manual focus)
FIG. 6 is a flowchart showing an example of the operation of the digital camera 100 taking the case of performing manual focus as an example. The manual focus is performed by the user operating the focus adjustment button while viewing a through image displayed in the recording mode. The Further, the focus confirmation is performed by the user based on the focus position of the photographed image displayed in an enlarged manner after the shutter operation. FIG. 7 is an explanatory diagram of a captured image and an enlarged image displayed during manual focus.
[0043]
In FIG. 7, steps T1 and T2 are the same as S1 and S2 in FIG.
At T3, the user looks at the composition of the entire through image 90 and moves the camera to adjust the angle and confirm the focus. When the user thinks that the focus has been achieved, the user presses the shutter button 37 at T5. If the subject is not in focus, the focus adjustment button operation is repeated for focus adjustment at T4.
[0044]
Since it takes several seconds (t seconds) from the depression of the shutter button 37 to the end of recording and saving, first, at T6, the CPU 21 supplies the image data stored in the DRAM 13 (through image data when the shutter is depressed) to the signal generator 16. Then, using all of the Ye component, the Cy component, and the Gr component, high-density video data is generated and displayed on the liquid crystal display 40 as a captured image for about 0.5 T seconds. Here, since the displayed captured image 92 has a higher resolution than the through image 90, a clear image can be obtained. Therefore, the user can check the composition, color, etc. of the entire image within about 0.5 tsec (FIG. 7B).
[0045]
Next, at T <b> 7, the CPU 21 reads out the focus position enlarged display means of the program modules stored in the ROM 23. In this embodiment, after the captured image is displayed, the focus position enlargement display means is automatically read from the ROM 23 after a certain time. However, as shown in step S3 in FIG. When the button 36 is pressed, the focus position enlargement display means of the program modules stored in the ROM 23 may be read.
At T7, the focus position of the captured image 92 displayed at T6 (the portion corresponding to the focus frame 91 shown in FIG. 7A) is enlarged and displayed. The focus position enlarged image 92 may be displayed on the entire screen (FIG. 7C), or may be a predetermined location on the screen (for example, any one of the four focus position corners) (FIG. 7C ′). .
[0046]
The focus position enlargement display means extracts the captured image data on the DRAM 13 and stores it in the image enlargement work area, and then enlarges the portion corresponding to the focus frame 91 using an enlargement method such as an interpolation method, and the enlargement is completed. Then, it is read out and supplied to the signal generator 16 to execute white balance adjustment and color calculation processing to generate video data composed of the luminance signal Y and the color difference signals RY and BY and store them in the VRAM 17.
The signal generator 16 also reads out the image data stored in the VRAM 17 and outputs it to the liquid crystal display 40 to display the image. As a result, the enlarged image 93 at the focus position can be displayed on the screen. The enlargement magnification is a fixed magnification in the embodiment, but may be a variable magnification.
[0047]
Further, as shown in FIG. 7C ′, the focus position enlargement display unit may be configured so that the display position of the enlarged image 92 is separated from the focus frame 91. In this case, the focus position enlargement display means takes out a portion corresponding to the focus frame 91 from the photographed image data on the DRAM 13 and enlarges it using an enlargement method such as an interpolation method using the image enlargement work area. A corresponding portion is read out from the image enlargement work area and supplied to the signal generator 16 to execute white balance adjustment and color calculation processing to generate a luminance signal Y, color difference signals RY, BY, and the liquid crystal display 40. Display an image. As a result, as shown in FIG. 7C ′, an enlarged image 94 at the focus position is displayed on the right corner of the screen so as to overlap the captured image 92.
[0048]
At T8, the CPU 21 supplies the captured image data to the compression / decompression circuit 15 to execute the compression process. The compressed captured image data is recorded in the flash memory 14.
When the writing of the image data for one image is completed, in T9, if the user has found out of focus or blur in the photographed image, the user presses the function selection button 31 and returns to T2, and resumes the recording mode. Re-shooting can be performed (T10).
The order of T6 and T7 may be changed so that the partial enlargement of step T7 is performed first, and then the entire display of step T6 is performed.
[0049]
In steps T7 and T8, the focus position of the photographed image is enlarged and displayed, so that the presence or absence of focus or deviation can be confirmed with a clear image. Therefore, the trouble of reproduction, enlargement, and re-shooting as in a conventional digital camera is eliminated.
4 may be combined with the steps T5 to T10 of FIG. 6 and the enlarged display of the focus position may be performed both before and after photographing.
[0050]
[Example 3] Confirmation of focus of captured image by autofocus
FIG. 8 is a flowchart showing an operation example when the focusing mechanism 8 of the digital camera 100 of FIG. 1 is an autofocus mechanism (FIG. 2). Focus confirmation displays a recorded image when the shutter is depressed, and the focus position thereof. Is enlarged and displayed. The explanatory diagram of the image at the time of focus confirmation after the shutter operation is the same as that in FIG.
[0051]
In FIG. 8, steps U1 and U2 are the same as S1 and S2 in FIG. That is, when the processing mode is switched to the recording mode at U1 and the photographing is possible, the image data for one frame periodically fetched from the CCD 2 at U2 is displayed on the liquid crystal display 40 as shown in FIG. An image 90 is displayed.
[0052]
In U3, the autofocus mechanism 8 automatically focuses on the subject portion displayed in the focus frame 91 displayed at a predetermined position (usually the center of the screen) of the display unit 40.
When in-focus is achieved by the autofocus mechanism 8, the user adjusts the angle by moving the camera while viewing the composition of the through image 90 in U4. When the angle adjustment is performed again, the process returns to U2, and the through image display and the focusing operation by the autofocus mechanism 8 are performed. When the composition and color adjustment are completed and the shutter button 37 is pressed in U5, the process proceeds to U6.
[0053]
In U6, high-density video data is generated in the same manner as in step T6 of FIG. 6, and is displayed on the liquid crystal display 40 as a captured image for a certain period of time. Since the displayed captured image has a higher resolution than the through image, the user can check the composition and color of the entire image during that time.
[0054]
Next, in U7, as in step T7 in FIG. 6, the automatic enlargement display of the autofocus position (the portion corresponding to the focus frame 91 shown in FIG. 7A) is performed for a certain time by the focus position enlargement display means. Made.
Note that when the user presses the focus position enlargement button 36 as in step S3 of FIG. 4, the focus position enlargement display means of the program modules stored in the ROM 23 may be read. This is the same as in step T7.
[0055]
Hereinafter, U8 to U10 are the same as those in steps T8 to T10 in FIG.
In steps U6 and U7, the focus position of the photographed image is enlarged and displayed, so that the presence or absence of focus or deviation can be confirmed with a clear image. Therefore, as in the case of the manual focus in FIG. 6, there is no inconvenience such as reproduction, enlargement, and re-shooting as in a conventional digital camera.
In the third embodiment, the focus position of the captured image after the shutter is turned on is displayed in an enlarged manner. However, the enlarged display may be performed during through image display (autofocus).
[0056]
In each of the embodiments described above, the focus position enlargement display unit enlarges the image portion in the frame with the focus frame displayed on the screen when the through image is displayed in advance as the focus position equivalent portion. In addition, a focus position designating unit capable of designating an arbitrary part of the through image or the photographed image as the focus position may be provided, and the designated part may be enlarged as the focus position. For example, the focus frame may be displayed and the focus frame may be moved by operating the focus position movement button, and the image portion in the focus frame may be enlarged / displayed as the focus position.
Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and it goes without saying that various modifications can be made.
[0057]
【The invention's effect】
As explained above The present invention According to the electronic camera apparatus, since the image portion corresponding to the focus position of the captured subject image can be enlarged and displayed, it is possible to easily check the focus.
[0058]
Also , Take It is also possible to enlarge and display the image part corresponding to the focus position of the monitor image of the captured subject image, so in the case of manual focus, enlarge the focus part in the monitor image (through image) and check the focus The focus adjustment operation can be performed. Thereby, it is possible to save the trouble of reproducing the recorded image and confirming the focus.
[0059]
Also , Since the image portion corresponding to the focus position of the subject image captured during the shutter operation can be enlarged and displayed, it is easy to check the focus and check for camera shake during the shutter operation with a clear enlarged image. Can do. Thereby, it is possible to save the trouble of reproducing the recorded image and confirming the presence or absence of focus or camera shake.
[0060]
Also The Even with an electronic camera device equipped with a focus function, the image portion corresponding to the autofocus position of the subject image captured during the shutter operation can be enlarged and displayed, making it possible to clearly check for the presence of camera shake during the shutter operation. Easy to do with enlarged images. As a result, it is possible to save the trouble of reproducing the recorded image and checking the presence or absence of camera shake.
[0061]
Also , The subject image captured during the shutter operation can be displayed for a predetermined time, and then the image portion corresponding to the focus position of the subject image can be enlarged and displayed, so it is possible to check the focus and the presence of camera shake during shutter operation. In addition, reconfirmation of composition and color can be easily performed with a clear enlarged image. Thereby, it is possible to save the trouble of reproducing the recorded image and confirming the presence or absence of focus and camera shake, and reconfirming the composition and color.
[0062]
Also , Covered It is also possible to specify the focus position of the body image on the screen. As a result, an arbitrary portion of the subject image can be enlarged and displayed, and a small portion that cannot be recognized well or a portion of interest in the image can be enlarged and reviewed.
[0063]
Also , Expansion When configured to have a large display start means, the user can check the focus position as necessary after checking the entire screen well, so that unnecessary checks for the user can be omitted. it can.
[0064]
Also, take Since a part of the captured subject image can be enlarged and displayed, compared with the case where the recorded image is reproduced and a part of the reproduced image is enlarged and displayed, the shooting state of the image at the shooting site, for example, the focus Checking camera shake, color, etc. can be done quickly with simple operations. In addition, it is possible to enlarge and review a small and unrecognizable part or a noticed part in the image displayed on the screen.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a circuit configuration example of a digital camera as an embodiment of an electronic camera device of the present invention.
FIG. 2 is an explanatory diagram of an autofocus mechanism of the digital camera of FIG.
3 is an external view of the digital camera of FIG.
FIG. 4 is a flowchart illustrating an operation example of a digital camera by manual focus.
FIG. 5 is an explanatory diagram of a through image and an enlarged image displayed during manual focus.
FIG. 6 is a flowchart illustrating an operation example of the digital camera by manual focus.
FIG. 7 is an explanatory diagram of a captured image and an enlarged image displayed after a shutter operation.
FIG. 8 is a flowchart showing an operation example of the digital camera by autofocus.
[Explanation of symbols]
8 Autofocus mechanism
14 Flash memory (recording medium)
36 Focus position enlargement button (enlargement display start instruction means)
81, 91 Focus frame (focus position)
80, 80 through image (monitor image)
84, 92 Captured images (images captured during shutter operation)
100 Digital camera (electronic camera device)

Claims (3)

  1. An autofocus mechanism,
    Still image shooting means for shooting a still image;
    A still image recording instruction means for instructing recording of a still image;
    A recording control unit that records a still image captured by the still image capturing unit in the recording unit when recording of a still image is instructed by the still image recording instruction unit;
    A display control means for enlarging and displaying a part of the still image recorded on the recording means by the recording control means when the recording of the still picture is instructed by the still image recording instruction means ,
    The display control means automatically enlarges and displays an image portion corresponding to an autofocus position to be focused by the autofocus mechanism when a still image recording instruction is instructed by the still image recording instruction means. Electronic camera device.
  2. When the recording of the still image is instructed by the still image recording instruction unit, the display control unit replaces the entire still image recorded in the recording unit by the recording control unit, and sets the autofocus position of the still image. The electronic camera apparatus according to claim 1, wherein a corresponding image portion is enlarged and displayed .
  3. The display control means displays the entire still image recorded on the recording means by the recording control means for a predetermined time on the display means when the still image recording instruction means instructs the recording of the still image, and then image of the electronic camera apparatus according to claim 1, characterized in that to enlarge the image portion corresponding to the auto-focus position.
JP36870497A 1997-12-26 1997-12-26 Electronic camera device Expired - Fee Related JP4233624B2 (en)

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JP36870497A JP4233624B2 (en) 1997-12-26 1997-12-26 Electronic camera device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP36870497A JP4233624B2 (en) 1997-12-26 1997-12-26 Electronic camera device

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JPH11196301A JPH11196301A (en) 1999-07-21
JP4233624B2 true JP4233624B2 (en) 2009-03-04

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JP36870497A Expired - Fee Related JP4233624B2 (en) 1997-12-26 1997-12-26 Electronic camera device

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