JP2007311962A - Electronic camera and image display program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic camera displaying a focused place in photographed images. <P>SOLUTION: The electronic camera has display means 20 and 21 for displaying images by image data, and a contrast computing means 18 for computing a contrast information, by using the data of the photographed images acquired after the indication of a photographing. The electronic camera further has a display control means 18 for controlling the display means 20 and 21, so that image data, corresponding to the places of pixels computing the contrast information of a fixed value or more by a contrast computing means 18, and the image data corresponding to the places of the pixels computing the contrast information less than the fixed value, are displayed in different modes. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electronic camera and an image display program.

  A technique is known in which contrast evaluation information is acquired in a plurality of evaluation regions for a captured image, and an evaluation region within the depth of field is selected based on the acquired evaluation information. For example, Patent Document 1 discloses a technique for displaying an evaluation area selected using an image captured before photographing processing and a subject corresponding to the selected evaluation area in distinction from other areas.

JP 2003-241067 A

  In the display according to the prior art, since all of the selected evaluation area (or the subject image corresponding to the selected evaluation area) is displayed in color, which part of the color display area is in focus is displayed. do not know.

(1) An electronic camera according to the present invention includes a display unit that displays an image based on image data, a contrast calculation unit that calculates contrast information using captured image data acquired after a shooting instruction, and a contrast calculation unit that exceeds a predetermined value. Display control means for controlling the display means to display the image data corresponding to the pixel position for which the contrast information is calculated and the image data corresponding to the pixel position for which the contrast information for which the contrast information is less than the predetermined value is displayed in different manners It is characterized by providing.
(2) In the electronic camera according to the first aspect, it is preferable that the contrast calculation unit calculates the contrast information for each pixel position of the captured image.
(3) In the electronic camera according to claim 2, the captured image may have color component data of a plurality of colors, and the contrast calculation unit may obtain the contrast information using the color component data according to the color selection instruction. It can also be calculated.
(4) In the electronic camera according to (2) or (3), the display control means may display the image data corresponding to the pixel position where the contrast information less than the predetermined value is calculated by performing a gradation inversion process. preferable.
(5) In the electronic camera according to claim 2 or 3, the display control means preferably displays the image data corresponding to the pixel position where contrast information less than a predetermined value is calculated by performing an image blurring process. .
(6) The electronic camera according to the fourth aspect of the present invention further records in which data of a photographed image acquired after the photographing instruction is recorded on a recording medium without performing gradation inversion processing in accordance with a recording instruction after display in a different mode. Control means may be provided.
(7) The electronic camera according to (5) is further provided with a recording control unit that performs image blurring processing and records the data of the captured image acquired after the imaging instruction in accordance with the recording instruction after the display in a different mode. May be provided.
(8) In the electronic camera according to any one of claims 1 to 7, the contrast calculation unit changes the predetermined value in accordance with the change instruction, and displays different modes based on the changed predetermined value. In this way, the display means can be controlled.
(9) An image display program according to the present invention includes a process for reading image data, a process for calculating contrast information using the read image data, and an image corresponding to a pixel position for which contrast information greater than a predetermined value is calculated. And a process of displaying an image based on the image data on the display device in a different manner for the data and the image data corresponding to the pixel position for which the contrast information less than the predetermined value is calculated.

With the electronic camera according to the present invention, it is possible to display the portion of the captured image that is in focus.
With the image display program according to the present invention, it is possible to display the portion of the captured image that is in focus.

The best mode for carrying out the present invention will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a block diagram for explaining the main configuration of the electronic camera according to the first embodiment of the present invention. In FIG. 1, a timing generator (TG) 15 sends a timing signal to a driver 14, an AFE (Analog Front End) circuit 12, an A / D conversion circuit 13, and an image processing circuit 16 in accordance with an instruction sent from the main CPU 18. Supply. The driver 14 supplies drive signals necessary for the image sensor 11.

  The photographing lens L forms a subject image on the imaging surface of the image sensor 11. The image pickup device 11 is configured by a CCD image sensor or the like having a plurality of photoelectric conversion elements corresponding to pixels, picks up a subject image formed on the image pickup surface, and performs photoelectric conversion according to the brightness of the subject image. Output a signal. R (red), G (green), and B (blue) color filters are provided on the imaging surface of the imaging element 11 so as to correspond to the pixel positions, respectively. Since the image sensor 11 captures a subject image through the color filter, the photoelectric conversion signal output from the image sensor 11 has RGB color system color information.

  The AFE circuit 12 performs analog processing (such as gain control) on the photoelectric conversion signal output from the image sensor 11. The A / D conversion circuit 13 converts the image pickup signal after analog processing into a digital signal.

  The main CPU 18 inputs a signal output from each block, performs a predetermined calculation, and outputs a control signal based on the calculation result to each block. The image processing circuit 16 is configured as an ASIC, for example, and performs image processing on the digital image signal input from the A / D conversion circuit 13. The image processing includes, for example, contour enhancement, color temperature adjustment (white balance adjustment) processing, and format conversion processing for an image signal.

  The image compression circuit 17 performs image compression processing at a predetermined compression ratio on the image signal processed by the image processing circuit 16 by the JPEG method. The display image creation circuit 20 creates display data for displaying the captured image on the liquid crystal monitor 21. The liquid crystal monitor 21 displays a reproduced image based on the display data input from the display image creation circuit 20.

  The recording medium 30 includes a memory card that can be attached to and detached from the electronic camera 10. The recording medium 30 records captured image data and an image file including the information in accordance with an instruction from the main CPU 18. The image file recorded on the recording medium 30 can be read by an instruction from the main CPU 18.

  The buffer memory 19 temporarily stores data before and after image processing and during image processing, stores an image file before recording on the recording medium 30, and stores an image file read from the recording medium 30. Used for.

  The operation member 23 corresponds to the operation buttons of the electronic camera 10 and outputs an operation signal corresponding to the pressing operation of each button to the main CPU 18. The lens driving device 24 performs focus adjustment by the photographing lens L by driving a focus lens (not shown) constituting the photographing lens L forward and backward in the optical axis direction in accordance with an instruction sent from the main CPU 18.

<Auto focus (AF) operation>
The electronic camera of this embodiment detects the adjustment state of the focal position by the photographic lens L by a focus detection method called a hill-climbing method. More specifically, the focus position is detected so that the focus evaluation value takes the maximum value while driving the focus lens forward / backward in the optical axis direction and the data based on the high-frequency component of the image pickup signal output from the image pickup device 11. To do.

  The main CPU 18 performs a filtering process for extracting a high frequency component from image data corresponding to a focus detection area (focus area) among the image data before image processing stored in the buffer memory 19. The image data after the filtering process has a low frequency component, particularly a direct current component, removed compared to the image data before the filtering process. The main CPU 18 further accumulates the absolute values of the filtered image data in order to accumulate the differences due to the high frequency components of the image data. This integrated value is called a focus evaluation value.

  The calculation of the focus evaluation value is performed, for example, while moving the focus lens from the ∞ (infinity) side to the close side. When the main CPU 18 repeatedly calculates the focus evaluation value, the relationship between the position of the focus lens and the focus evaluation value is obtained as a focus evaluation value curve (so-called hill climbing curve). The lens position corresponding to the maximum point of the focus evaluation value curve is a position that eliminates blurring of the edge of the subject image captured by the image sensor 11 and maximizes the contrast of the image.

<Main processing>
FIG. 2 is a flowchart of main processing performed by the main CPU 18. The program according to FIG. 2 is stored in a memory (not shown) in the main CPU 18, and is half-pressed when a main switch (not shown) of the electronic camera is turned on and from a release switch (not shown) constituting the operation member 23. It is activated when an operation signal is input to the main CPU 18. In step S101, the main CPU 18 initializes information in the camera and proceeds to step S102.

  In step S102, the main CPU 18 performs an AE operation and proceeds to step S103. Specifically, the subject brightness BV is calculated using a detection signal of a photometric sensor (not shown), and the exposure control value is calculated using the BV value. In step S103, the main CPU 18 performs an AF operation and proceeds to step S104. Specifically, an instruction is sent to the lens driving device 24, and the calculation of the focus evaluation value described above is repeated while moving the focus lens. The main CPU 18 further sends an instruction to the lens driving device 24 to drive the focus lens to the in-focus position (position corresponding to the maximum point of the focus evaluation value curve), and proceeds to step S104.

  In step S104, the main CPU 18 determines whether or not a release operation has been performed. When a release full-press operation signal is input from a release switch (not shown) constituting the operation member 23, the main CPU 18 makes an affirmative determination in step S104 and proceeds to step S105, and when the release full-press operation signal is not input. A negative determination is made in step S104, and the process returns to step S102.

  In step S <b> 105, the main CPU 18 causes the image sensor 11 to capture an image. Specifically, the aperture (not shown) is narrowed down to the control aperture value, and the image sensor 11 is made to accumulate charges for a time corresponding to the control shutter time. When the image signal from the image sensor 11 is stored in the buffer memory 19, the main CPU 18 proceeds to step S106.

  In step S106, the main CPU 18 calculates a contrast value. Specifically, using the image data before image processing stored in the buffer memory 19, contrast information (focus evaluation value) about the captured image is calculated for each pixel position. The contrast information in the AF operation in step S103 is calculated for each lens position using pixel data in a predetermined area on the image sensor 11 corresponding to the focus area, whereas the contrast in step S106. Information is different in that it is calculated using pixel data of the entire captured image.

  In step S107, the main CPU 18 determines whether or not the contrast value is equal to or greater than a predetermined value. The main CPU 18 makes an affirmative decision in step S107 if the contrast value calculated in step S106 is greater than or equal to a predetermined value for each pixel position constituting the captured image, and proceeds to step S108. If the contrast value is less than the predetermined value, A negative determination is made in step S107 and the process proceeds to step S109.

  In step S109, the main CPU 18 performs RGB inversion processing using the color component signal at the pixel position determined negative in step S107, and proceeds to step S108. In the RGB inversion processing, an R component signal (represented as R−) obtained by inverting the gradation with respect to the R component signal (represented as R +) at the pixel position is calculated, and the G component signal (represented as G +) is calculated. Calculates a G component signal (represented as G-) with inverted gradation and calculates a B component signal (represented as B-) with inverted gradation for a B component signal (represented as B +). . As a result, a small color component signal is calculated by the inversion process for the pixel position constituting the bright part of the image, and a large color component signal value is calculated for the pixel position constituting the dark part of the image by the inversion process.

  In step S108, the main CPU 18 performs image composition processing and proceeds to step S110. In the image composition processing, for each pixel position subjected to the RGB inversion processing, the R component signal (R inverted image) after the RGB inversion processing (RGB inverted image) with respect to the R component signal (R +) before the RGB inversion processing (original image). -) Is added, and the G component signal (G-) after RGB inversion processing (RGB inverted image) is added to the G component signal (G +) before RGB inversion processing (original image), and before RGB inversion processing. The B component signal (B−) after the RGB inversion process (RGB inverted image) is added to the B component signal (B +) of the (original image), and the addition result is used as a composite value. For pixel positions that have not been subjected to RGB inversion processing, the R component signal (R +), G component signal (G +), and B component signal (B +) before RGB inversion processing (original image) are directly used as composite values. .

  In step S110, the main CPU 18 sends an instruction to the display image creation circuit 20, reproduces and displays the combined image on the liquid crystal monitor 21, and proceeds to step S111. 3A is a diagram illustrating an original image before RGB inversion processing, FIG. 3B is a diagram illustrating an inverted image after RGB inversion processing, and FIG. 3C is a composite image after image synthesis processing. It is a figure illustrated.

  In FIG. 3A, the contrast value of the region 31 is not less than a predetermined value, and the contrast value of the region 32 and the region 33 is less than the predetermined value. In FIG. 3B, the region 32A and the region 33A have been subjected to RGB inversion processing. In FIG. 3C, the area 31 is displayed in the color of the original image, and the area 32B and the area 33B are displayed in a neutral gray color by the synthesis process. In FIG. 3A, the contrast values of the background areas other than the areas 31, 32, and 33 are also less than a predetermined value. In this description, the background area should be hatched, but in FIG. 3 (a) and FIG. 3 (b), the hatching of the background area is omitted.

  In FIG. 3C, the reason why the region 32B and the region 33B are displayed as an achromatic gray image is as follows. When the R component signal (R +) of the original image and the R component signal (R−) of the RGB inverted image are added, the signal values become substantially equal at all pixel positions subjected to the RGB inversion processing. That is, an intermediate tone red image is obtained. Similarly, when the G component signal (G +) of the original image and the G component signal (G−) of the RGB inverted image are added, the signal values become substantially equal at all pixel positions subjected to the RGB inversion processing. That is, an intermediate gradation green image is obtained. Further, when the B component signal (B +) of the original image and the B component signal (B−) of the RGB inverted image are added, the signal values become substantially equal at all pixel positions subjected to the RGB inversion processing. That is, an intermediate gradation blue image is obtained.

  Since the regions 32B and 33B (including the background region) in FIG. 3C are a combination of the intermediate-tone red image, green image, and blue image obtained as described above, the region is not displayed to the user. Other areas except for 31 (area composed of pixels that have been affirmed in step S108) are recognized as a neutral gray image. As described above, the user recognizes only a pixel portion having a contrast value equal to or higher than a predetermined value as a color, and recognizes a pixel portion having a contrast value lower than the predetermined value as an achromatic color.

  In step S111 in FIG. 2, the main CPU 18 determines whether or not a recording instruction has been issued. When the operation signal indicating the recording instruction is input from the operation member 23, the main CPU 18 makes a positive determination in step S111 and proceeds to step S112. When the operation signal indicating the recording instruction is not input, the main CPU 18 makes a negative determination in step S111. Return to step S102. When returning to step S102, it is a case where the data of a picked-up image are not preserve | saved at the recording medium 30. FIG.

  In step S112, the main CPU 18 performs predetermined image processing (such as color temperature adjustment) on the image data before image processing stored in the buffer memory 19, and then proceeds to step S113. In step S113, the main CPU 18 records (saves) the captured image data after the image processing in the recording medium 30, and ends the processing in FIG.

According to the first embodiment described above, the following operational effects can be obtained.
(1) Since the contrast value is calculated using the captured image (captured image) data after the release operation (step S106), the in-focus state by the AF operation (step S103) can be confirmed in the actual captured image.

(2) A configuration in which a pixel portion having a contrast value equal to or higher than a predetermined value is displayed in color on the liquid crystal monitor 21 and a pixel portion having a contrast value lower than the predetermined value is displayed in an achromatic color (steps S107, S108, S109). , S110), the user can easily identify on the liquid crystal monitor 21 an area where the focus is high and the contrast value is high (edge blur is small) and an area where the contrast value is not, and can be confirmed as focus adjustment information. In addition, since the entire area of the captured image is a display target, even a region outside the focus area used in the AF operation (step S103) can be displayed in color if the contrast value is high.

  In general, the number of imaging pixels of the imaging device 11 is larger than the display resolution (the number of display pixels) of the liquid crystal monitor 21. For this reason, during the normal display in which the electronic camera displays the entire area of the captured image on the liquid crystal monitor 21, it is not necessary to display all of the pixel signals. It is assumed that it is not displayed. Even in such a case, by calculating a contrast value for each pixel position over the entire area of the captured image, a partial area of the captured image is extended and displayed on the screen of the liquid crystal monitor 21 (so-called electronic zoom enlarged display). As a result, it is possible to reliably display an area in focus and a high contrast value on the liquid crystal monitor 21.

(3) Since only pixel portions having a contrast value equal to or higher than a predetermined value are displayed in color, even a main subject is displayed in an achromatic color if the contrast value is less than the predetermined value. For this reason, the user can confirm which part of the main subject is focused on. Further, since image recognition processing such as subject extraction is unnecessary, the processing burden on the CPU is not increased.

(4) Since the achromatic display is performed by a simple image composition (step S108) in which the RGB inversion processing (step S109) is added to the original image data, the processing load on the CPU is light.

(5) Since the data of the photographic image is recorded on the recording medium 30 only when the recording instruction is given after being displayed on the liquid crystal monitor 21 (Yes in step S111), only the necessary photographic image can be recorded.

(Second embodiment)
FIG. 4 is a flowchart of main processing performed by the main CPU 18 of the electronic camera according to the second embodiment of the present invention. Compared to FIG. 2, step S106A (determination threshold change) is inserted between step S106 (contrast value calculation) and step S107 (contrast value determination), step S150 instead of step S109 (RGB inversion processing). The point at which (image blurring addition processing) is performed, the point at which step S108A (image synthesis processing) is performed instead of step S108 (image synthesis processing), the point at which step S111 returns to step S106A when a negative determination is made, and step Since step S112A (image processing) is performed instead of S112 (image processing), the difference will be mainly described.

  In step S106A in FIG. 4, the main CPU 18 changes the determination threshold used in step S107. The increase / decrease and change width of the determination threshold are determined according to the operation signal from the operation member 23. Information indicating the determination threshold value is stored in a nonvolatile memory in the main CPU 18, and when a change operation is performed, the determination threshold value is changed from the previous determination threshold value. When the change operation is not performed, the previous determination threshold is used again as the determination threshold.

  In step S150, which proceeds after making a negative determination in step S107, the main CPU 18 performs a process of adding image blur to the data of the pixel area determined negative in step S107, and then proceeds to step S108A. The image blur addition process electrically blurs an image (hereinafter referred to as image blur addition), and processes the image by image processing to generate an artificially focused image. is there. In the electronic camera according to the present embodiment, the image data is subjected to a low-pass filter (LPF) process to degrade the high frequency spatial frequency component of the image, thereby blurring the edge of the image and reducing the contrast of the image.

  In step S108A, the main CPU 18 performs image composition processing and proceeds to step S110. The image composition process replaces the image data before the image blur addition process (original image) with the image data after the image blur addition process (blurred image) for each pixel position subjected to the image blur addition process, The image data after replacement is used as a composite value. For pixel positions that have not been subjected to image blur addition processing, the image data before the image blur addition processing (original image) is used as a composite value.

  In step S111, the main CPU 18 determines whether or not a recording instruction has been issued. When the operation signal indicating the recording instruction is input from the operation member 23, the main CPU 18 makes a positive determination in step S111 and proceeds to step S112. When the operation signal indicating the recording instruction is not input, the main CPU 18 makes a negative determination in step S111. The process returns to step S106A. The case of returning to step S106A is a case where the additional range of image blur is widened (or narrowed).

  In step S112A, the main CPU 18 performs predetermined image processing (color temperature adjustment, etc.) on the image data after the image synthesis process stored in the buffer memory 19, and then proceeds to step S113.

According to the second embodiment described above, the following operational effects can be obtained.
(1) A configuration in which, in the captured image, an image blur is added to an area where the contrast value is less than a predetermined value and displayed on the liquid crystal monitor 21, and an area where the contrast value is greater than or equal to the predetermined value is displayed as it is (steps S107, S108A, S150). , S110), the user can easily discriminate between the high contrast value area and the non-contrast area on the liquid crystal monitor 21. Further, since the entire area of the captured image is set as a display target, an area outside the focus area used in the AF operation (step S103) can be displayed according to the contrast value.

(3) Even if it is the main subject, if the contrast value is less than the predetermined value, the image is blurred and displayed, so that the user can confirm which part of the main subject is focused on. Further, since image recognition processing such as subject extraction is unnecessary, the processing burden on the CPU is light.

(4) Since the determination threshold of the contrast value is configured to be changeable (step S106A), it is possible to widen or narrow the range in which image blur is added (that is, variable depth of field) by image processing. It can be done freely.

(5) Since the composite image data obtained by adding image blur to the photographed image is recorded in the recording medium 30, even a compact type camera having a deep depth of field compared to a single-lens reflex type camera It enables photographic expression with a shallow depth of field.

(Third embodiment)
FIG. 5 is a flowchart of main processing performed by the main CPU 18 of the electronic camera according to the third embodiment of the present invention. Compared to FIG. 2, step S105A (color selection) is inserted between step S105 (image data acquisition) and step S106 (contrast value determination), and step S106B instead of step S106 (contrast value calculation). Since the difference in (selection color contrast value calculation) is performed, these differences will be mainly described.

  In step S105A in FIG. 5, the main CPU 18 selects the color component of the image data used in step S106B. The selection of the color component is determined according to an operation signal from the operation member 23. Information indicating the selected color is stored in a non-volatile memory in the main CPU 18, and when a color selection operation is performed, the previous selected color is used as a starting point. When the color selection operation is not performed, the previous selection color is adopted again.

  In step S106B, the main CPU 18 calculates a contrast value for the selected color. Specifically, using the color component data selected from the image data before image processing stored in the buffer memory 19, contrast information (focus evaluation value) for the captured image is calculated for each pixel position. The contrast information in the AF operation in step S103 is calculated for each lens position using the pixel data in the area on the image sensor 11 corresponding to the focus area, whereas the contrast information in step S106B. The calculation is different from the calculation using pixel data of the entire photographed image.

  Note that the RGB inversion processing in step S109 is performed for all color components in the same manner as in FIG. This is because the color selection in step S105A is performed to select a color component used for contrast value determination, and is different from the RGB inversion processing for performing achromatic display.

  According to the third embodiment described above, the following functions and effects can be obtained in addition to the functions and effects of the first embodiment. That is, since the color component used for determining the contrast value is configured to be selectable (step S105A), it is possible to determine the contrast value according to the color of the subject. As a result, in step S110, only a pixel portion having a contrast value equal to or higher than a predetermined value among the same color subjects can be displayed in color, and even a subject of the same color can be displayed in achromatic color if the contrast value is less than the predetermined value. Therefore, the user can easily confirm which part of the main subject is focused on.

(Modification 1)
In the above description, the example in which the hill-climbing method is adopted for the AF operation (step S103) has been described. It is good. Also in this case, an area where the contrast value is less than the predetermined value in the photographed image is displayed on the liquid crystal monitor 21, or an area where the contrast value is less than the predetermined value is added and displayed on the liquid crystal monitor 21. By doing so, it is possible to distinguish between a region with a high contrast value and a region with no contrast value.

(Modification 2)
The change of the determination threshold value in step S106A of FIG. 4 may be determined according to an operation signal from the aperture operation member (aperture ring) of the photographic lens L.

(Modification 3)
The change of the determination threshold value in step S106A of FIG. 4 may be determined according to an operation signal from the zoom operation member (zoom ring) of the photographing lens L.

(Modification 4)
In the above description, the electronic camera in which the program is stored in the main CPU 18 in advance has been described as an example. In general, when upgrading the version of an electronic camera program, information stored in the electronic camera may be rewritten or new information may be added via the Internet or a portable recording medium. is there. The present invention can also be applied to such a version upgrade program.

(Modification 5)
Although the case where the program is executed by the main CPU 18 of the electronic camera has been described, an image display program including each process performed after step S105 (image data acquisition) in the flowchart illustrated in FIG. 2, FIG. 4, or FIG. 5 is prepared. The program can be taken into a personal computer or the like and used as an image display device. In this case, the program is loaded into a data storage device of a personal computer and then executed to be used as an image display device. The image display device reads image data of an image data file that has been photographed and recorded by an electronic camera, and displays a reproduced image of the image data on the display device. The program may be loaded by setting a recording medium storing the program in the personal computer, or may be loaded into the personal computer by a method via a network.

  The above description is merely an example, and is not limited to the configuration of the above embodiment. The first embodiment to the third embodiment may be configured by appropriately combining them.

It is a block diagram explaining the principal part structure of the electronic camera by 1st embodiment of this invention. It is a flowchart explaining the main process of an electronic camera. (a) is a diagram illustrating an original image before RGB reversal processing, (b) is a diagram illustrating a reversed image after RGB reversal processing, and (c) is a diagram illustrating a composite image after image synthesis processing. It is a flowchart explaining the main process by 2nd embodiment of this invention. It is a flowchart explaining the main process by 3rd embodiment of this invention.

Explanation of symbols

11 ... Image sensor 18 ... Main CPU
DESCRIPTION OF SYMBOLS 19 ... Buffer memory 20 ... Display image creation circuit 21 ... Liquid crystal monitor 23 ... Operation member 24 ... Lens drive device 30 ... Recording medium

Claims (9)

Display means for displaying an image based on image data;
Contrast calculation means for calculating contrast information using data of a photographed image acquired after a photographing instruction;
Image data corresponding to a pixel position for which contrast information of a predetermined value or more is calculated by the contrast calculation means and image data corresponding to a pixel position for which contrast information less than the predetermined value is calculated are displayed in different modes. The electronic camera further comprises display control means for controlling the display means. The electronic camera according to claim 1,
The electronic camera according to claim 1, wherein the contrast calculation unit calculates contrast information for each pixel position of the captured image. The electronic camera according to claim 2,
The captured image has color component data of a plurality of colors,
The contrast calculation means calculates contrast information using data of color components according to a color selection instruction. The electronic camera according to claim 2 or 3,
The electronic camera according to claim 1, wherein the display control means displays the image data corresponding to the pixel position for which the contrast information less than the predetermined value is calculated by performing gradation inversion processing. The electronic camera according to claim 2 or 3,
The electronic camera according to claim 1, wherein the display control means performs image blurring processing on image data corresponding to a pixel position for which contrast information less than the predetermined value is calculated. The electronic camera according to claim 4,
The electronic apparatus further comprises recording control means for recording data of a photographed image acquired after the photographing instruction on the recording medium without performing the gradation inversion processing in response to the recording instruction after the display in the different mode. camera. The electronic camera according to claim 5,
An electronic camera, further comprising: a recording control unit that records the captured image data acquired after the imaging instruction on the recording medium by performing the image blurring process according to the recording instruction after the display in the different mode. In the electronic camera according to any one of claims 1 to 7,
The contrast calculation means changes the predetermined value in accordance with a change instruction, and controls the display means to display the different modes based on the changed predetermined value. Processing to read image data;
Processing for calculating contrast information using the read image data;
An image display device that displays the image based on the image data in a different manner from the image data corresponding to the pixel position for which the contrast information greater than or equal to the predetermined value is calculated and the image data corresponding to the pixel position for which the contrast information less than the predetermined value is calculated. An image display program for causing a computer device to execute processing to be displayed on the computer.

Images