JP2012034146A - Electronic apparatus and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic apparatus enabling a user to previously get to know how bright an image is made by exposure correction processing.SOLUTION: The electronic apparatus comprises: a display unit for displaying the image; an exposure correction control unit which performs exposure correction changing the brightness of the image according to operation input; a histogram calculation unit which calculates a histogram indicating the relation between the brightness of the image expressed by gradation divided by a predetermined width and the number of pixels of the image in each brightness; and a display control unit which displays the histogram calculated by the histogram calculation unit together with the image on the display unit and moves the display position of the gradation range of the predetermined width identified and displayed as the interest object of the exposure correction in response to the exposure correction performed by the exposure correction control unit.

Description

  The present invention relates to an electronic device and a program.

  Conventionally, for example, there is a camera disclosed in Patent Document 1. On the liquid crystal monitor of this camera, a color panel in which samples of colors determined for each gradation region are arranged in a vertical row is displayed together with a color-coded image of a photographed image color-coded for each luminance threshold. When the cursor is moved by the operation of the cross key, an image area in the luminance range defined in the color of the color panel at the cursor movement position is displayed by the color. The camera determines the dynamic range and gamma characteristics of the image so that the selected color region has an appropriate luminance range, and performs exposure correction processing.

Japanese Patent No. 3820497

  However, in the conventional camera, the user cannot know in advance how bright the image will be by the exposure correction process.

The invention described in claim 1
A display for displaying an image;
An exposure compensation controller that performs exposure compensation that changes the brightness of the image in response to an operation input;
A histogram calculation unit that calculates a histogram indicating the relationship between the brightness of an image represented by gradations divided by a predetermined width and the number of pixels of the image for each brightness;
The histogram calculated by the histogram calculation unit is displayed on the display unit together with the image, and the display position of the gradation range having a predetermined width that is identified and displayed as a target of exposure correction is displayed according to the exposure correction performed by the exposure correction control unit. An electronic device is configured including a display control unit to be moved.

The invention described in claim 7
A display for displaying an image;
An exposure compensation controller that performs exposure compensation that changes the brightness of the image in response to an operation input;
A histogram calculation unit that calculates a histogram indicating the relationship between the brightness of an image represented by gradations divided by a predetermined width and the number of pixels of the image for each brightness;
A simulation unit for creating a simulation image of an image subjected to exposure correction by the exposure correction control unit;
The histogram calculated by the histogram calculation unit for the simulation image is displayed together with the simulation image on the display unit, and a gradation range of a predetermined width corresponding to the image region identified and displayed as the target of exposure correction in the image is displayed on the simulation image. An electronic device is configured including a display control unit for identifying and displaying on the histogram.

The invention according to claim 8 provides:
A display procedure for displaying an image on the display unit;
Exposure compensation control procedure for performing exposure compensation that changes the brightness of the image according to operation input,
A histogram calculation procedure for calculating a histogram indicating the relationship between the brightness of an image represented by gradations divided by a predetermined width and the number of pixels of the image for each brightness;
The histogram calculated by the histogram calculation procedure is displayed on the display unit together with the image, and the display position of the gradation range of the predetermined width that is identified and displayed as the target of exposure correction is displayed according to the exposure correction performed by the exposure correction control procedure. A program for causing a computer to execute a display control procedure to be moved is configured.

The invention according to claim 9 is:
A display procedure for displaying an image on the display unit;
Exposure compensation control procedure for performing exposure compensation that changes the brightness of the image according to operation input,
A histogram calculation procedure for calculating a histogram indicating the relationship between the brightness of an image represented by gradations divided by a predetermined width and the number of pixels of the image for each brightness;
A simulation procedure for creating a simulation image of an image subjected to exposure correction by the exposure correction control procedure;
The histogram calculated by the histogram calculation procedure for the simulation image is displayed together with the simulation image on the display unit, and a gradation range of a predetermined width corresponding to the image area identified and displayed as the target of exposure correction in the image is displayed on the simulation image. A program for causing a computer to execute a display control procedure for identifying and displaying on a histogram is configured.

  According to the present invention, the user can know in advance how bright the image will be by exposure correction processing.

(A) is a front perspective view which shows the outline of the external appearance of the digital camera by one Embodiment of this invention, (b) is a back perspective view. It is a block diagram which shows the outline of the electric circuit structure of the digital camera shown in FIG. It is a figure which shows the screen displayed on a monitor at the time of exposure correction mode of the digital camera shown in FIG. 2 is a flowchart showing an outline of control processing performed in an exposure correction mode by a CPU of the digital camera shown in FIG. 1.

  An embodiment of an electronic apparatus according to the present invention will be described by taking a digital camera as an example.

  FIG. 1A is a front perspective view showing an outline of the appearance of a digital camera 1 according to an embodiment of the present invention.

  The digital camera 1 includes a camera body 2 and a photographing lens 3 provided on the front surface of the camera body 2. On the left side when viewed from the front of the camera body 2, a grip portion 4 is provided that is gripped by the photographer during photographing. A release button 5 that is a shutter button for photographing is provided on the upper surface of the grip portion 4. On the upper surface of the camera body 2 on the right side of the release button 5, there is provided a power button 6 that supplies operating power to each circuit inside the digital camera 1 when operated. A flash 7 for ensuring brightness when the subject is dark is provided on the upper right side of the front surface of the camera body 2, and an LED (Light Emitting Diode) 8 is provided on the front surface of the camera body 2 on the left side of the flash 7. Yes. The LED 8 is turned on before the flash 7 emits light, and a red-eye reduction lamp that suppresses a phenomenon in which a person's eyes shine red, an AF (autofocus) auxiliary light lamp that emits light when a dark subject is focused, and a release button 5 is used as a self-timer lamp for notifying the timing at which shooting is performed after a predetermined time elapses after pressing 5.

  FIG. 1B is a rear perspective view showing an outline of the external appearance of the digital camera 1. In FIG. 4B, the same parts as those in FIG.

  A monitor 11 is provided on the back of the camera body 2. The monitor 11 is made of, for example, a TFT (Thin Film Transistor) liquid crystal, and displays various types of information such as a through image for confirming the composition and shooting information, and also reproduces and displays the shot image. A zoom button 13 and a multi selector 14 are arranged on the right side of the monitor 11. The zoom button 13 is operated when the captured image displayed on the monitor 11 is enlarged or reduced. The multi-selector 14 is composed of direction keys that detect operation directions such as up and down directions and left and right directions. When a desired setting item is selected from various setting items on a menu screen for performing various settings of the digital camera 1 or the like. Operated. An enter button 15 is provided at the center of the multi-selector 14. The determination button 15 is operated when determining a desired setting item selected by operating the multi-selector 14.

  FIG. 2 is a block diagram showing the configuration of the electric circuit of the digital camera 1.

  The digital camera 1 includes a CPU (Central Processing Unit) 21. The CPU 21 performs various control processes for each circuit in the digital camera 1 using the buffer memory 23 as a temporary storage work area in accordance with a control program stored in the nonvolatile memory 22.

  The subject light guided into the camera by the lens 3 is incident on the light receiving surface of the image sensor 25 that constitutes the imaging means. The imaging element 25 is composed of, for example, a CCD (Charge Coupled Device), a CMOS (Complementary Metal Oxide Semiconductor), etc., and images subject by accumulating subject light incident on the light receiving surface as electric charge. When the subject is imaged by the image sensor 25, the CPU 21 operates the focus / exposure adjustment device 26 to activate the AF (Auto Focus) and AE (Auto Exposure) functions. For example, the focus / exposure adjusting device 26 automatically adjusts the focus by moving the position of the lens 3 so that the contrast of the subject image formed on the light receiving surface of the image sensor 25 is the highest. The focus / exposure adjustment device 26 adjusts the aperture of the diaphragm (not shown) and the opening time of the shutter curtain (shutter speed) (shutter speed) so that the brightness of the subject image formed on the light receiving surface of the image sensor 25 is properly exposed. ) To adjust the exposure automatically. The subject image formed on the light receiving surface of the image sensor 25 is converted into an analog image signal, and this image signal is sent to an A / D (Analog / Digital) conversion circuit 28 according to the timing generated by a TG (Timing Generator) 27. Is output. The A / D conversion circuit 28 converts the analog imaging signal output from the imaging element 25 into a digital signal.

  The digital imaging signal converted by the A / D conversion circuit 28 is temporarily stored in the image memory 31 by the image processing circuit 30 in the image processing block 29. The image processing circuit 30 reads the image pickup signal stored in the image memory 31, performs image processing such as white balance processing and gamma correction on the read digital image pickup signal to generate developed image data, and the compression circuit 32. Output to. The compression circuit 32 performs compression processing for compressing the developed image data input from the image processing circuit 30 at a predetermined ratio, and generates compressed image data such as JPEG (Joint Photographic Experts Group). The compressed image data is temporarily stored in the buffer memory 23. The compressed image data stored in the buffer memory 23 is stored in a card-like recording medium 33 including a nonvolatile memory that is attached to and detached from a card slot (not shown). Further, it is output to the display circuit 34 and displayed on the monitor 11 as an image. The monitor 11 constitutes a display unit that displays captured images.

  An operation member 36 is connected to the CPU 21. The operation members 36 are a release button 5, a power button 6, a zoom button 13, a multi selector 14, a determination button 15, and the like. The CPU 21 performs control processing based on a signal output from the operation member 36.

  The CPU 21 and the image processing circuit 30 constitute an exposure correction control unit that performs exposure correction that changes the brightness of a captured image in accordance with an operation input. When the exposure correction portion 14a provided on the right side of the multi-selector 14 is pressed, the CPU 21 outputs a control signal to the image processing circuit 30 to activate an exposure correction mode for changing the brightness of the captured image. Further, the CPU 21 constitutes a display control unit, and when the exposure correction mode is activated, a histogram 42 is displayed together with a through image 41 corresponding to a captured image captured by the image sensor 25 as shown in FIG. Display on the monitor 11. The histogram 42 is calculated by the CPU 21 that constitutes the histogram calculation unit, and the brightness of the through image 41 represented by gradation is represented by the horizontal axis (the vertical direction of the screen of the monitor 11), and the pixel of the through image 41 for each brightness. The relationship is shown with the number as the vertical axis (the horizontal direction of the screen of the monitor 11). The gradation in the present embodiment is represented by 256 gradation levels from 0 indicating black to 255 indicating white, and a larger gradation value corresponds to a brighter color. This gradation is divided with a unit exposure correction width performed by the exposure correction control unit for each unit exposure correction operation in which the multi selector 14 is pressed once to the left or right as a predetermined width. It is set to 1/3 EV (Exposure Value). The scale on the horizontal axis of the histogram 42 is attached to the unit exposure correction width interval, and the position of the scale “0” indicates the gradation value corresponding to the appropriate exposure.

  As shown in FIG. 4B, the gradation range 42a having a predetermined width as a target of exposure correction is identified and displayed in white, and the inside of the through image 41 corresponding to the gradation range 42a having the predetermined width identified and displayed. The image region 41a is identified and displayed as a subject of exposure correction by blink display indicated by hatching in FIG. The identification display positions of the gradation range 42 a and the image area 41 a having a predetermined width as the target of exposure correction can be moved by the up / down operation of the multi-selector 14. Further, the display control unit moves the display position of the image area 41a identified and displayed by blink display according to the exposure correction performed by the exposure correction control unit. For example, when the multi-selector 14 is operated to brighten the target of exposure correction by one step, the display control unit displays the gradation range 42a having a predetermined width that is identified and displayed as 0 shown in FIG. As shown in (c) of the figure, the image area 41a shown in (b) of the through image 41 corresponding to the 0 gradation range is displayed in the +/- 1 EV range as shown in FIG. The image is moved and displayed in the image area 41a shown in FIG. In addition, the display control unit percentages the ratio of the number of pixels of the image area 41a that is identified and displayed in the through image 41 corresponding to the gradation range 42a of the predetermined width that is identified and displayed to the total number of pixels of the through image 41. Thus, for example, 12% is displayed on the monitor 11 as shown in FIG. 4B and 4% as shown in FIG.

  The CPU 21 and the image processing circuit 30 constitute a simulation unit, and create a simulation image of the through image 41 that has been subjected to exposure correction by the exposure correction control unit. The display control unit displays the simulation image created by the simulation unit on the monitor 11. In the present embodiment, the display control unit displays the histogram 42 calculated by the histogram calculation unit for the simulation image on the monitor 11 together with the simulation image, and is an image region that is identified and displayed in the through image 41 as a target for exposure correction. A gradation range 42a having a predetermined width corresponding to 41a is identified and displayed on the histogram 42 of the simulation image.

  A control process performed by the CPU 21 of the digital camera 1 in the exposure correction mode will be described with reference to a flowchart shown in FIG.

  In S <b> 1, the CPU 21 determines whether or not the exposure correction mode is activated by pressing the exposure correction portion 14 a of the multi-selector 14. When the exposure correction location 14a is not pressed and the determination result in S1 is “No”, the CPU 21 repeats the determination process in S1. When the exposure correction portion 14a is pressed down and the determination result in S1 is “Yes”, the CPU 21 activates the exposure correction mode, and in S2, calculates the histogram 42 and displays the calculated histogram 42 as the through image 41. At the same time, it is displayed on the monitor 11 as shown in FIG.

  In S <b> 3, the CPU 21 determines whether or not a gradation range 42 a having a predetermined width equal to the exposure correction width is selected as an exposure correction target by the up / down operation of the multi-selector 14. When the multi-selector 14 is operated up and down, for example, as shown in FIG. 3B, a gradation range 42a having a predetermined width corresponding to the appropriate exposure is identified and displayed as an object of exposure correction. At the same time, the image area 41a of the through image 41 corresponding to the gradation range 42a of the predetermined width that is identified and displayed is blink-displayed. When the identification display position of the gradation range 42a of the predetermined width and the blink display position of the image area 41a are moved by the up / down operation of the multi selector 14, the exposure correction range is selected, and the determination result of S3 is “Yes” In S4, the CPU 21 sets the selected gradation range 42a of the predetermined width and the image area 41a of the through image 41 corresponding to the predetermined gradation range 42a as the focus of exposure correction, for example, FIG. The identification is displayed at the position shown in b). When the multi-selector 14 is further pressed once, as shown in FIG. 3C, the CPU 21 moves the identification display position of the gradation range 42a one step upward, and responds to this movement in S4. The blink display position of the image area 41a is also moved. In S5, the CPU 21 calculates the area of the image area 41a that is blink-displayed, and calculates the ratio of the image area 41a to the entire image area of the through image 41. The calculation result is displayed on the monitor 11 as a percentage, for example, 12% as shown in FIG.

  In S <b> 6, the CPU 21 determines whether or not an exposure correction operation has been performed by a left / right operation of the multi-selector 14. When the exposure correction operation is performed and the determination result in S6 is “Yes”, the CPU 21 displays the through image 41 brightly or darkly according to the exposure correction in S7, and at the same time, the histogram 42 also corresponds to the screen change. To redisplay. In the exposure correction, minus exposure correction is performed with the number of steps corresponding to the number of times the multi selector 14 is pressed to the left, and plus exposure correction is performed with the number of steps corresponding to the number of times the multi selector 14 is pressed right. Although the identification display position of the gradation range 42a does not change by performing exposure correction, since the brightness of the through image 41 and the shape of the histogram 42 change, the CPU 21 changes the image area 41a according to the exposure correction in S8. The blink display position is also moved. In subsequent S <b> 9, the CPU 21 calculates the area of the image area 41 a that is blink-displayed, and calculates the ratio of the image area 41 a to the entire image area of the through image 41.

  In subsequent S10, the CPU 21 determines whether or not the release button 5 has been fully pressed. When the determination result in each determination process of S3, S6, or S10 is “No”, the CPU 21 returns the process to S3. When the release button 5 is fully pressed and the determination result in S10 is “Yes”, the CPU 21 captures an image displayed by simulation in the through image 41 in S11 and ends the process.

  According to such a digital camera 1 of the present embodiment, in FIG. 4 and S2, the display control unit displays the histogram 42 calculated by the histogram calculation unit together with the through image 41 on the monitor 11, and in S4, exposure correction is performed. For example, the display position of the gradation range 42a having a predetermined width shown in FIG. 3B, which is identified and displayed as the target of interest, is moved as shown in FIG. For this reason, it is possible to predict and know in advance what gradation value the captured image will have as a result of the exposure correction process from the gradation value of the display position where the gradation range 42a of the predetermined width has moved. Can do. Therefore, the photographer can perform an exposure correction operation that does not rely on intuition.

  According to the present embodiment, in S8, in the through image 41 corresponding to the gradation range 42a of the predetermined width identified and displayed, together with the display position of the gradation range 42a of the predetermined width identified and displayed by the display control unit. The display position of the image area 41a that is identified and displayed as the subject of exposure correction is also moved according to the exposure correction performed by the exposure correction control unit. Therefore, as a result of the exposure correction process, in addition to the gradation value, the brightness of the captured image is determined from the brightness before and after the movement of the image area 41a identified and displayed in the through image 41. You can know in advance by concrete prediction.

  According to this embodiment, in S5 and S9, the ratio of the number of pixels of the image area 41a that is identified and displayed in the through image 41 to the total number of pixels of the through image 41 is displayed on the monitor 11 by the display control unit. For this reason, the ratio of the image area 41a identified and displayed in the through image 41 to the entire area of the through image 41 can be grasped numerically, and the image area 41a to be identified and displayed is the through image 41 of another area. It becomes easier to evaluate the effect on brightness.

  In the above embodiment, after the processing of S5 is performed, instead of performing the above-described processing of S6 to S9, it is determined whether or not the release button 5 is half-pressed, and the following processing is performed. You may make it the structure which performs. That is, when the release button 5 is pressed halfway after the processing of S5 is performed, the CPU 21 adjusts the shutter speed and the aperture value so that the blink-displayed image area 41a has an appropriate exposure, thereby correcting exposure. Do. Next, the CPU 21 creates an image obtained as a result of exposure correction as a simulation image, and displays the created simulation image on the monitor 11 (not shown). Next, the CPU 21 calculates a histogram 42 for the simulation image, and displays the calculated histogram 42 on the monitor 11 together with the simulation image. Then, as shown in FIG. 3C, the gradation range 42a corresponding to the image area 41a that has been blink-displayed as the subject of exposure correction is identified and displayed on the histogram 42 of the simulation image (not shown). Then, in S10, the CPU 21 determines whether or not the release button 5 has been fully pressed. When the release button 5 is fully pressed and the determination result in S10 is “Yes”, the CPU 21 captures an image displayed by simulation in the through image 41 in S11 and ends the process.

  According to the above configuration, the display control unit displays the histogram 42 on the monitor 11 together with the simulation image, and for example, as shown in FIG. A gradation range 42a having a predetermined width corresponding to the image area 41a is identified and displayed on the histogram 42 of the simulation image. For this reason, from the value of the gradation range 42a having a predetermined width identified and displayed in the histogram 42 of the simulation image, the gradation value of the image area 41a that has been identified and displayed as the target of exposure correction is found in the simulation image, and exposure is performed. As a result of the correction process, it is possible to know in advance what gradation value the brightness of the photographed image will have. Therefore, from this simulation image, the photographer can perform an exposure correction operation that does not rely on intuition.

  According to said structure, the simulation image of the through image 41 by which exposure correction was performed by the exposure correction control part is produced by the simulation part, and the produced simulation image is displayed on the monitor 11 by the display control part. For this reason, the result of the exposure correction process can be visually confirmed by the simulation image displayed on the monitor 11 without being predicted.

  In the above embodiment, the case has been described in which the predetermined width for dividing the gradation is the unit exposure correction width performed by the exposure correction control unit, but the present invention is not limited to this. For example, the predetermined width may be an equal width obtained by equally dividing the gradation or an arbitrary gradation width. In this case, the unit exposure correction width performed by the exposure correction control unit, the equal width obtained by equally dividing the gradation, and the arbitrary gradation width are displayed on the menu screen of the monitor 11 as a predetermined width for dividing the gradation, An arbitrary one can be selected from those displayed by operating the multi-selector 14. At this time, the monitor 11, the multi-selector 14, and the CPU 21 constitute selection means for selecting a predetermined width for dividing the gradation. According to this configuration, the predetermined width for dividing the gradation is selected as a unit exposure correction width, an equal width obtained by dividing the gradation equally, or an arbitrary gradation width by operating the selection unit, and exposure correction is performed. A gradation width that can be easily operated can be selected as appropriate.

  In the above-described embodiment, the case where one kind of gradation is used has been described. However, the present invention is not limited to this, and a plurality of gradations may be selected. In this case, for example, some gradations are displayed on the menu screen of the monitor 11, and an arbitrary one is set from those displayed by operating the multi-selector 14. At this time, the monitor 11, the multi-selector 14, and the CPU 21 constitute a gradation type setting unit that sets the gradation type. According to this configuration, when the gradation to be set is changed, the shape of the histogram in the histogram 42 changes, and at the same time, the brightness of the through image 41 and the image area 41a for blink display also change. Although the histogram 42, the through image 41, and the blink display 41a can be changed by the exposure correction, they can be changed by changing the gradation.

  In the above embodiment, the case where exposure correction is performed on a captured image has been described, but the present invention is not limited to this. For example, the present invention can also be applied when exposure correction is performed on a captured image that has already been captured.

  In the above embodiment, the case where the unit exposure correction width is set at 1/3 EV intervals has been described, but the present invention is not limited to this. For example, the unit exposure correction width may be set to a 1/2 EV interval or another interval.

  Moreover, although the case where the electronic device according to the present invention is applied to a digital camera has been described in the above embodiment, the present invention is not limited to this. The present invention may be applied to electronic devices other than digital cameras, for example, other electronic devices such as personal computers. In this case, for example, the captured image recorded on the recording medium 33 is transferred to the personal computer, and the exposure correction process described above is performed in the personal computer.

Further, the present invention is not limited to an electronic device, and can be realized as a computer program. In this case, the program
A display procedure for displaying a captured image on a display unit such as a liquid crystal display,
An exposure compensation control procedure for performing exposure compensation to change the brightness of the captured image in response to an operation input;
A histogram calculation procedure for calculating a histogram 42 indicating the relationship between the brightness of a captured image represented by gradations divided by a predetermined width and the number of pixels of the captured image for each brightness;
The histogram 42 calculated by the histogram calculation procedure is displayed on the display unit together with the photographed image, and the gradation range 42a having a predetermined width identified and displayed as the target of exposure correction is displayed according to the exposure correction performed by the exposure correction control procedure. A display control procedure for moving the display position is executed.

  According to the above program, the histogram 42 calculated by the histogram calculation procedure is displayed on the display unit together with the photographed image by the display control procedure, and the gradation range 42a having a predetermined width that is identified and displayed as the target of exposure correction is displayed. The position is moved according to the exposure correction performed by the exposure correction control procedure. For this reason, the user can know in advance what tone value the image will have as a result of the exposure correction process from the tone value at the display position where the tone range 42a of the predetermined width has moved.

The program is on the computer
A display procedure for displaying a captured image on a display unit such as a liquid crystal display,
An exposure compensation control procedure for performing exposure compensation to change the brightness of the captured image in response to an operation input;
A histogram calculation procedure for calculating a histogram 42 indicating the relationship between the brightness of a captured image represented by gradations divided by a predetermined width and the number of pixels of the captured image for each brightness;
A simulation procedure for creating a simulation image of a captured image that has been subjected to exposure correction by the exposure correction control procedure;
A histogram 42 calculated by the histogram calculation procedure for the simulation image is displayed on the display unit together with the simulation image, and a gradation range 42a having a predetermined width corresponding to the image area 41a that has been identified and displayed as the focus of exposure correction in the captured image. It is also possible to execute a display control procedure for identifying and displaying the image on the histogram 42 of the simulation image.

  According to the above program, the histogram 42 is displayed on the display unit together with the simulation image by the display control procedure, and the gradation having a predetermined width corresponding to the image region 41a that has been identified and displayed as the target of exposure correction in the captured image. The range 42a is identified and displayed on the histogram 42 of the simulation image. For this reason, the gradation value of the image area identified and displayed as the subject of exposure correction is determined from the value of the gradation range 42a having a predetermined width that is identified and displayed in the histogram 42 of the simulation image. The user can know in advance what kind of gradation value the brightness will be.

DESCRIPTION OF SYMBOLS 1 ... Digital camera 5 ... Release button 11 ... Monitor 14 ... Multi selector 15 ... Decision button 21 ... CPU
22 ... Nonvolatile memory 30 ... Image processing circuit 41 ... Through image 42 ... Histogram

Claims (9)

A display for displaying an image;
An exposure correction control unit that performs exposure correction to change the brightness of the image according to an operation input;
A histogram calculation unit that calculates a histogram indicating the relationship between the brightness of the image represented by gradations divided by a predetermined width and the number of pixels of the image for each brightness;
The histogram calculated by the histogram calculation unit is displayed on the display unit together with the image, and the gradation of the predetermined width that is identified and displayed as the target of exposure correction according to the exposure correction performed by the exposure correction control unit An electronic device comprising: a display control unit that moves a display position of the range. The electronic device according to claim 1,
In accordance with the exposure correction performed by the exposure correction control unit, the display control unit is configured to display the predetermined width of the predetermined width that is identified and displayed together with the display position of the gradation range of the predetermined width that is identified and displayed as a target of exposure correction. An electronic apparatus that moves a display position of an image area that is identified and displayed as a target of exposure correction in the image in accordance with a gradation range. The electronic device according to claim 1 or 2,
A simulation unit that creates a simulation image of the image subjected to exposure correction by the exposure correction control unit;
The display control unit causes the display unit to display the simulation image created by the simulation unit. The electronic device according to any one of claims 1 to 3,
The display control unit displays, on the display unit, a ratio of the number of pixels of the image area identified and displayed in the image corresponding to the gradation range of the predetermined width that is identified and displayed to the total number of pixels of the image. An electronic device characterized in that The electronic device according to any one of claims 1 to 4,
An electronic apparatus comprising: a selection unit that selects the predetermined width as a unit exposure correction width performed by the exposure correction control unit, an equal width obtained by equally dividing the gradation, or an arbitrary gradation width. The electronic device according to any one of claims 1 to 5,
An electronic apparatus comprising a gradation type setting unit for setting a gradation type of the gradation. A display for displaying an image;
An exposure correction control unit that performs exposure correction to change the brightness of the image according to an operation input;
A histogram calculation unit that calculates a histogram indicating the relationship between the brightness of the image represented by gradations divided by a predetermined width and the number of pixels of the image for each brightness;
A simulation unit for creating a simulation image of the image subjected to exposure correction by the exposure correction control unit;
The histogram calculated by the histogram calculation unit with respect to the simulation image is displayed on the display unit together with the simulation image, and has the predetermined width corresponding to the image area identified and displayed as the focus of exposure correction in the image. An electronic device comprising: a display control unit that identifies and displays a gradation range on the histogram of the simulation image. A display procedure for displaying an image on the display unit;
An exposure compensation control procedure for performing exposure compensation for changing the brightness of the image in response to an operation input;
A histogram calculation procedure for calculating a histogram indicating a relationship between the brightness of the image represented by gradations divided by a predetermined width and the number of pixels of the image for each brightness;
The histogram calculated by the histogram calculation procedure is displayed on the display unit together with the image, and the gradation of the predetermined width that is identified and displayed as the target of exposure correction according to the exposure correction performed by the exposure correction control procedure A program for causing a computer to execute a display control procedure for moving the display position of the range. A display procedure for displaying an image on the display unit;
An exposure compensation control procedure for performing exposure compensation for changing the brightness of the image in response to an operation input;
A histogram calculation procedure for calculating a histogram indicating a relationship between the brightness of the image represented by gradations divided by a predetermined width and the number of pixels of the image for each brightness;
A simulation procedure for creating a simulation image of the image subjected to exposure correction by the exposure correction control procedure;
The histogram calculated by the histogram calculation procedure for the simulation image is displayed on the display unit together with the simulation image, and has the predetermined width corresponding to the image area identified and displayed as an exposure correction target in the image. A program for causing a computer to execute a display control procedure for identifying and displaying a gradation range on the histogram of the simulation image.

Images