JP6601062B2 - Imaging control apparatus, imaging control method, and program - Google Patents

Description

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

2. Description of the Related Art Conventionally, automatic exposure control (AE) that does not require a user to manually set an exposure value has been widely installed in imaging apparatuses. There is also known a photographing method called bracket photographing in which a plurality of images are photographed while changing the exposure value at a predetermined interval with respect to the exposure value set by the automatic exposure control.
By the way, when the exposure value changed by bracket photography is uniform at a predetermined interval, it is not always possible to photograph with the exposure setting desired by the user. Therefore, a technique for correcting an exposure value when performing bracket shooting based on the luminance distribution of the captured image and the feature information of the subject is disclosed (for example, see Patent Document 1).

JP 2014-123914 A

  However, in the case of the above-mentioned Patent Document 1, if automatic exposure control is performed and further processing for correcting an exposure value when performing bracket shooting is performed, the processing takes time and the power consumption increases. There is. This problem is not limited to the setting of the exposure value, and the same applies to other shooting conditions.

  Accordingly, an object of the present invention is to provide an imaging control apparatus, an imaging control method, and a program that can perform setting of a plurality of shooting setting values by processing with a relatively light load and can preferably perform shooting of a plurality of images. Is to provide.

In order to solve the above problems, an imaging control device according to one embodiment of the present invention provides:
An acquisition means for acquiring a distribution of parameter values of predetermined parameters relating to shooting in the captured image;
Detecting means for detecting a subject from within the captured image;
First specifying means for specifying a plurality of representative values from the parameter value distribution acquired by the acquiring means and subject parameter values corresponding to the subject detected by the detecting means ;
Second specifying means for specifying a predetermined number of intermediate values among the plurality of representative values specified by the first specifying means;
A plurality of shootings for shooting based on the plurality of representative values specified by the first specifying unit , the subject parameter value, and the predetermined number of intermediate values specified by the second specifying unit A setting means for setting a setting value;
Shooting control means for controlling shooting based on the plurality of shooting setting values set by the setting means and acquiring a plurality of captured images;
Equipped with a,
The second specifying unit is configured such that the closer to the subject parameter value between the plurality of representative values specified by the first specifying unit, the narrower the interval between adjacent ones of the specified number of intermediate values specified. It is characterized by specifying .
In order to solve the above problem, an imaging control device of one embodiment of the present invention provides:
An acquisition means for acquiring a distribution of parameter values of predetermined parameters relating to shooting in the captured image;
Detecting means for detecting a subject from within the captured image;
First specifying means for specifying a plurality of representative values from the parameter value distribution acquired by the acquiring means and subject parameter values corresponding to the subject detected by the detecting means;
Second specifying means for specifying a predetermined number of intermediate values among the plurality of representative values specified by the first specifying means;
Setting means for setting a plurality of shooting setting values for shooting based on the subject parameter value specified by the first specifying means and the predetermined number of intermediate values specified by the second specifying means When,
Shooting control means for controlling shooting based on the plurality of shooting setting values set by the setting means and acquiring a plurality of captured images;
With
The second specifying unit is configured such that the closer to the subject parameter value between the plurality of representative values specified by the first specifying unit, the narrower the interval between adjacent ones of the specified number of intermediate values specified. It is characterized by specifying.
In order to solve the above problem, an imaging control device of one embodiment of the present invention provides:
An acquisition means for acquiring a distribution of parameter values of predetermined parameters relating to shooting in the captured image;
First specifying means for specifying a plurality of representative values from the distribution of the parameter values acquired by the acquiring means;
Measuring means for measuring the parameter value in the captured image;
At least one of the plurality of representative values specified by the first specifying means is more than a first threshold value set on the lower side of the parameter value within a range in which the parameter value can be measured by the measuring means. Correction means for correcting the representative value when it is lower or higher than the second threshold value set on the higher side of the parameter value;
Setting means for setting a plurality of shooting setting values for shooting based on the plurality of representative values including the representative value corrected by the correction means;
Shooting control means for controlling shooting based on the plurality of shooting setting values set by the setting means and acquiring a plurality of captured images;
It is characterized by having.

  According to the present invention, a plurality of shooting setting values can be set by a process with a relatively light load, and a plurality of images can be suitably captured.

It is a block diagram which shows schematic structure of the imaging device of one Embodiment to which this invention is applied. It is a figure which shows typically an example of the exposure setting conditions currently recorded on the imaging device of FIG. It is a figure which shows typically an example of the brightness | luminance histogram which concerns on the imaging | photography process by the imaging device of FIG. It is a figure which shows typically an example of the brightness | luminance histogram which concerns on the imaging | photography process by the imaging device of FIG. It is a figure which shows typically an example of the brightness | luminance histogram which concerns on the imaging | photography process by the imaging device of FIG. 3 is a flowchart illustrating an example of an operation related to an imaging process by the imaging apparatus of FIG. 1. It is a figure which shows typically an example of the exposure setting conditions currently recorded on the modification of an imaging device. It is a figure which shows typically an example of the brightness | luminance histogram which concerns on the imaging | photography process by the imaging device of FIG.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, the scope of the invention is not limited to the illustrated examples.

FIG. 1 is a block diagram illustrating a schematic configuration of an imaging apparatus 100 according to an embodiment to which the present invention is applied.
As shown in FIG. 1, the imaging apparatus 100 includes a central control unit 1, a memory 2, an imaging unit 3, an image processing unit 4, an operation processing unit 5, a display unit 6, and a recording medium control unit 7. The operation input unit 8 is provided.
The central control unit 1, the memory 2, the imaging unit 3, the image processing unit 4, the operation processing unit 5, the display unit 6 and the recording medium control unit 7 are connected via a bus line 9.

  Note that a known device can be applied to the imaging device 100, and not only a digital camera having a main function as a shooting function but also a mobile phone having a shooting function that is not a main function as in the present embodiment. And mobile terminals such as smartphones.

  The central control unit 1 controls each unit of the imaging device 100. Specifically, although not shown, the central control unit 1 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), and a ROM (Read Only Memory), and includes various processing programs (illustrated) for the imaging apparatus 100. Various control operations are performed according to (omitted).

The memory 2 is composed of, for example, a DRAM (Dynamic Random Access Memory) or the like, and temporarily records data processed by each unit of the imaging apparatus 100 in addition to the central control unit 1.
The memory 2 stores exposure setting conditions 2a (see FIG. 2) used in automatic exposure control (AE) (details will be described later).

  The imaging unit 3 constitutes an imaging unit that images a subject. Specifically, the imaging unit 3 includes a lens unit 3a, an electronic imaging unit 3b, and an imaging control unit 3c.

The lens unit 3a includes, for example, a plurality of lenses such as a zoom lens and a focus lens, and a diaphragm that adjusts the amount of light.
The electronic imaging unit 3b includes, for example, an image sensor such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal-Oxide Semiconductor), and an optical image that has passed through various lenses and a diaphragm of the lens unit 3a. Convert to

  Although not shown, the imaging control unit 3c includes a timing generator, a driver, and the like. Then, the imaging control unit 3c scans and drives the electronic imaging unit 3b with a timing generator and a driver, and the optical imaging unit 3b converts the optical image that has passed through the lens unit 3a into a two-dimensional image signal for each predetermined period. Then, the frame image is read out for each screen from the imaging area of the electronic imaging unit 3b and is output to the image processing unit 4.

  In addition to the lens unit 3a, the electronic imaging unit 3b, and the imaging control unit 3c, the imaging unit 3 includes a zoom driving unit that moves the zoom lens in the optical axis direction, and a focusing driving unit that moves the focus lens in the optical axis direction. Etc. (both not shown) may be provided.

The image processing unit 4 performs various types of image signal processing on the analog value signal of the frame image transferred from the electronic imaging unit 3b. Specifically, the image processing unit 4 appropriately adjusts the gain for each of the RGB color components with respect to the analog value signal of the frame image transferred from the electronic imaging unit 3b, and then performs a sample with a sample hold circuit (not shown). After holding and converting to digital data by an A / D converter (not shown), and performing color process processing including pixel interpolation processing and γ correction processing by a color process circuit (not shown), a digital luminance signal and A color difference signal (YUV data) is generated.
The luminance signal and the color difference signal output from the color process circuit are DMA-transferred to a memory 2 used as a buffer memory via a DMA controller (not shown).

The image processing unit 4 includes a subject detection unit 4a that detects a subject.
That is, the subject detection unit (detection unit) 4 a detects a subject (for example, a human face) from the frame image captured by the imaging unit 3. Specifically, the subject detection unit 4a performs, for example, face detection processing, edge processing on image data of a plurality of frame images constituting a live view image captured by the imaging unit 3 and generated by the image processing unit 4. Various image processing such as detection processing and feature extraction processing is performed to detect a region including a specific subject (for example, a face region corresponding to a human face).
Further, the face detection process, the edge detection process, and the feature extraction process are known techniques, and thus detailed description thereof is omitted here.

When displaying a live view image, the image processing unit 4 generates display image data for each of a plurality of frame images constituting the live view image and outputs the image data to the display unit 6. At this time, for example, the image processing unit 4 may reduce the image processing unit 4 to a predetermined size (for example, VGA size) based on the display resolution of the display panel 6 b and output the reduced size to the display unit 6.
When recording an image, the image processing unit 4 compresses the YUV data of the subject according to a predetermined encoding method (for example, JPEG format, motion JPEG format, MPEG format, etc.), and the recording medium control unit 7 Output to.

The operation processing unit 5 includes a measurement unit 5a, a distribution acquisition unit 5b, a representative value specifying unit 5c, a representative value correcting unit 5d, an intermediate value specifying unit 5e, a setting unit 5f, and a photographing control unit 5g. ing.
In addition, although each part of the operation | movement process part 5 is comprised from the predetermined logic circuit, for example, the said structure is an example and is not restricted to this.

The measuring unit (measuring unit) 5a measures the luminance value in the frame image (captured image).
That is, the measurement unit 5a sequentially acquires image data (YUV data) of a plurality of frame images constituting the live view image generated by the image processing unit 4 from the memory 2, and the luminance values of the plurality of pixels of each frame image. (For example, the luminance value (0 to 255) expressed in 8 bits) is measured.
The luminance value is represented by 8 bits. However, the luminance value is an example, and the luminance value is not limited to this. For example, the luminance value may be represented by using the luminance Bv of the reflected light of the subject constituting the APEX relational expression.

The distribution acquisition unit (acquisition unit) 5b acquires a luminance histogram as a distribution of parameter values of predetermined parameters related to shooting in the frame image.
That is, the distribution acquisition unit 5b calculates the number of pixels corresponding to each luminance value based on the luminance values of a plurality of pixels of each frame image measured by the measurement unit 5a. Then, for example, the distribution acquisition unit 5b generates a luminance histogram (see FIG. 3A and the like) in which the horizontal axis is the luminance value Y and the vertical axis is the number of pixels.

The representative value specifying unit (first specifying unit) 5c specifies a plurality of representative luminance values from the luminance histogram (parameter value distribution) acquired by the distribution acquiring unit 5b.
That is, the representative value specifying unit 5c specifies, for example, a plurality of luminance values in which the number of pixels has a maximum value (peak) in the luminance histogram as representative luminance values (see FIGS. 3A and 3B). The representative value specifying unit 5c specifies a subject brightness value (subject parameter value) representing a brightness value corresponding to the subject detected by the subject detection unit 4a from the brightness histogram. For example, the representative value specifying unit 5c specifies the brightness value of a plurality of pixels constituting an area (for example, a face area) including a specific subject in the live view image in the brightness histogram, and specifies the specified brightness value. The representative value (for example, the luminance value at which the number of pixels has a maximum value or the average value of the luminance values of the area including the specific subject) is specified as the subject luminance value.

  In FIGS. 3A and 3B and the drawings after FIG. 4A, which will be described later, the representative luminance value is indicated by a white arrow, and the subject luminance value is indicated by an arrow filled with black. Represents. In addition, intermediate luminance values described later are represented by thin arrows. Further, in FIGS. 3A and 3B, the exposure value Ev converted according to the APEX relational expression (described later) corresponding to each of the representative luminance value, the subject luminance value, and the intermediate luminance value. It is written in parallel.

Further, the representative value specifying unit 5c may specify a plurality of representative luminance values from the luminance histogram with reference to the subject luminance value. Specifically, the representative value specifying unit 5c specifies the representative luminance value on the low luminance side whose luminance value is lower than the luminance value of the subject and / or the representative luminance value on the high luminance side whose luminance value is high in the luminance histogram. To do.
At this time, if there are a plurality of representative luminance values whose number of pixels is greater than or equal to the number of pixels of the subject luminance value on each of the lower luminance side and the higher luminance side than the subject luminance value in the luminance histogram, the representative value specifying unit 5c In the luminance histogram, the representative luminance value having a larger number of pixels (larger frequency) may be specified with priority on the lower luminance side and / or the higher luminance side than the subject luminance value (FIG. 4A). And FIG. 4B).

  Note that the representative value specifying unit 5c specifies a representative luminance value having a larger number of pixels from among representative luminance values whose number of pixels is equal to or greater than the number of pixels of the subject luminance value. A representative luminance value having a larger number of pixels may be specified including a representative luminance value less than the number of pixels.

Moreover, although the luminance value in which the number of pixels has the maximum value is illustrated as the representative luminance value, it is an example and is not limited to this. That is, for example, when the number of pixels corresponding to the lower and upper limit luminance values within the range in which the luminance value can be measured by the measurement unit 5a (for example, the luminance value 0 and the luminance value 255) is equal to or greater than the number of pixels of the subject luminance value ( 5 (a) and 5 (b)), the representative value specifying unit 5c is arranged in a region on the low luminance side or high luminance side where the luminance value cannot be accurately measured by the measuring unit 5a in the live view image. Assuming that there is a specific object that is characteristically represented, the luminance value may be specified as the representative luminance value. The representative luminance value specified in this way may be corrected by a representative value correction unit 5d described later.
5A and 5B, the brightness value of the live view image is schematically represented by a two-dot chain line at a portion below the lower limit or above the upper limit of the range measurable by the measuring unit 5a. It expresses.

The representative value correcting unit (correcting unit) 5d corrects the representative luminance value specified by the representative value specifying unit 5c.
That is, within the range in which the luminance value can be measured by the measurement unit 5a, for example, the first threshold value and the second threshold value corresponding to the minimum exposure value Ev and the maximum exposure value Ev set according to the exposure setting condition 2a. Is set. Further, the ISO sensitivity Sv is fixed to a predetermined value, and the brightness Bv of the reflected light of the subject corresponding to the first threshold value is converted into the exposure value Ev according to the APEX relational expression (see below) representing the relationship between the exposure control parameters. Then, it becomes 4Ev, and when the brightness Bv of the reflected light of the subject corresponding to the second threshold value is similarly converted to the exposure value Ev, it becomes 17Ev (see FIG. 2).
APEX relational expression: Ev = Av + Tv = Bv + Sv
[Ev: exposure value, Av: aperture value, Tv: exposure time (shutter speed), Bv: luminance of reflected light of the subject, Sv: ISO sensitivity]

The representative value correcting unit 5d reads the exposure setting condition 2a from the memory 2, and determines whether or not to correct the representative luminance value specified by the representative value specifying unit 5c according to the exposure setting condition 2a. Specifically, the representative value correcting unit 5d has a representative luminance value specified by the representative value specifying unit 5c lower than a first threshold value corresponding to 4Ev in the exposure value Ev or a first value corresponding to 17Ev. If the threshold value is higher than 2, the representative luminance value is determined to be corrected.
Then, the representative value correcting unit 5d, for example, represents the representative luminance so as to bring the representative luminance value closer to the first threshold when the representative luminance value specified by the representative value specifying unit 5c is lower than the first threshold. The value is corrected to the first threshold value (see FIG. 5A). Further, when the representative luminance value is higher than the second threshold value, the representative value correction unit 5d corrects the representative luminance value to the second threshold value, for example, so as to bring the representative luminance value closer to the second threshold value. (See FIG. 5 (b)).

The intermediate value specifying unit (second specifying unit) 5e specifies a predetermined number of intermediate luminance values among the plurality of representative luminance values specified by the representative value specifying unit 5c.
That is, the intermediate value specifying unit 5e reads the exposure setting condition 2a from the memory 2, and specifies a predetermined number of intermediate luminance values according to the exposure setting condition 2a. Specifically, for example, the intermediate value specifying unit 5e includes the representative luminance value between the low luminance side specified by the representative value specifying unit 5c and the subject luminance value (see FIG. 3A), or the representative value specifying unit 5c. Between the subject brightness value specified by the above and the representative brightness value on the high brightness side (see FIG. 3B), the representative brightness value on the low brightness side specified by the representative value specifying unit 5c (on the lower brightness side than the subject brightness value). The representative luminance value having a larger number of pixels) and the subject luminance value, and between the subject luminance value and the representative luminance value on the high luminance side (see FIG. 4A), the low luminance specified by the representative value specifying unit 5c. Between the representative luminance value on the side and the subject luminance value, and between the subject luminance value and the representative luminance value on the high luminance side (representative luminance value on the higher luminance side than the subject luminance value and having a larger number of pixels) (FIG. 4B). See), the representative luminance value on the low luminance side corrected by the representative value correcting unit 5d, and the subject luminance Between the subject luminance value and the representative luminance value on the high luminance side corrected by the representative value correcting unit 5d (see FIG. 5B), the predetermined interval defined in the exposure setting condition 2a. A predetermined number of intermediate luminance values are specified by being equally divided by an interval (for example, an interval corresponding to 1 Ev).
3A to 5B described above are examples and are not limited to these, and can be arbitrarily changed as appropriate.

The setting unit (setting unit) 5f sets a plurality of exposure values Ev as a plurality of shooting setting values for shooting.
That is, the setting unit 5f reads the exposure setting condition 2a from the memory 2, and in accordance with the exposure setting condition 2a, a plurality of exposure values for photographing based on the plurality of representative luminance values specified by the representative value specifying unit 5c. Ev is set. In addition to the plurality of exposure values Ev based on the plurality of representative luminance values specified by the representative value specifying unit 5c, the setting unit 5f adds a predetermined number of intermediate values specified by the intermediate value specifying unit 5e according to the exposure setting condition 2a. An exposure value Ev is set based on the luminance value.
Here, as shown in FIG. 2, the exposure setting condition 2a includes, for example, “maximum 8” as the set number of exposure values Ev, “equal intervals” as the intervals between intermediate luminance values, and “1Ev as the minimum intervals between intermediate luminance values. “Equivalent”, “4Ev” as the minimum value of the exposure value Ev, “17Ev”, etc. as the maximum value.
Specifically, the setting unit 5f includes a plurality of representative luminance values and subject luminance values specified by the representative value specifying unit 5c, a corrected representative luminance value corrected by the representative value correcting unit 5d according to the exposure setting condition 2a, A plurality of exposure values Ev are set based on a predetermined number of intermediate luminance values specified according to the exposure setting condition 2a by the intermediate value specifying unit 5e. For example, the setting unit 5f converts a plurality of representative luminance values, subject luminance values, corrected representative luminance values, intermediate luminance values, and the like into luminance Bv of the reflected light of the corresponding subject, and a plurality of exposures according to the APEX relational expression. Set the value Ev.

The imaging control unit (imaging control unit) 5g controls imaging based on the plurality of exposure values Ev set by the setting unit 5f, and acquires a plurality of captured images.
That is, the imaging control unit 5g sets the aperture value Av, exposure time (shutter speed) Tv, ISO sensitivity Sv, and the like for each of the plurality of exposure values Ev set by the setting unit 5f based on a predetermined program diagram. adjust. The imaging control unit 5g outputs a control signal for controlling the driving of the diaphragm of the lens unit 3a and the exposure of the electronic imaging unit 3b to the imaging unit 3, and controls for controlling the signal amplification factor of the image data. The signal is output to the image processing unit 4.
When the control signal is input, the imaging control unit 3c of the imaging unit 3 controls the aperture according to the aperture value Av and also controls the electronic imaging unit 3b according to the exposure time (shutter speed) Tv. Further, when a control signal is input, the image processing unit 4 controls the signal amplification factor of the image data of the frame image according to the ISO sensitivity Sv.

  The display unit 6 includes a display control unit 6a and a display panel 6b.

  The display control unit 6a performs control to display a predetermined image in the display area of the display panel 6b based on image data of a predetermined size read from the memory 2 or the recording medium 7a and decoded by the image processing unit 4. Specifically, the display control unit 6a includes a VRAM (Video Random Access Memory), a VRAM controller, a digital video encoder, and the like. Then, the digital video encoder reads the luminance signal and the color difference signal decoded by the image processing unit 4 and stored in the VRAM (not shown) from the VRAM through the VRAM controller at a predetermined reproduction frame rate. A video signal is generated based on the data and output to the display panel 6b.

The display panel 6b displays an image taken by the imaging unit 3 in the display area based on the video signal from the display control unit 6a. Specifically, the display panel 6b performs live updating while sequentially updating a plurality of frame images generated by photographing an object by the imaging unit 3 in a still image shooting mode or a moving image shooting mode. Display the view image. Further, the display panel 6b displays a still image (rec view image) of the subject recorded on the recording medium 7a, or displays a moving image of the subject being shot.
Examples of the display panel 6b include a liquid crystal display panel and an organic EL (Electro-Luminescence) display panel. However, the display panel 6b is an example and is not limited thereto.

The recording medium control unit 7 is configured such that the recording medium 7a is detachable, and controls reading of data from the loaded recording medium 7a and writing of data to the recording medium 7a.
That is, the recording medium control unit 7 records the image data for recording encoded by the image processing unit 4 in a predetermined compression format (for example, JPEG format, motion JPEG format, MPEG format, etc.) on the recording medium 7a. Record in the area.
The recording medium 7a is constituted by, for example, a nonvolatile memory (flash memory).

The operation input unit 8 is for performing a predetermined operation of the imaging apparatus 100.
Specifically, the operation input unit 8 includes, for example, a power button for turning on / off the power of the apparatus body, a shutter button for instructing imaging of a subject, and a selection / decision button for selecting instructions for imaging mode, function, etc. Are also not shown).
When various buttons are operated by the user, the operation input unit 8 outputs an operation instruction corresponding to the operated button to the central control unit 1. The central control unit 1 causes each unit to execute a predetermined operation in accordance with an operation instruction output from the operation input unit 8 and input.
The operation input unit 8 may include a touch panel (not shown) provided integrally with the display panel 6b of the display unit 6.

<Shooting process>
Next, imaging processing by the imaging apparatus 100 of the present embodiment will be described with reference to FIG.
FIG. 6 is a flowchart illustrating an example of an operation related to a shooting process performed by the imaging apparatus 100.

  In the photographing process described below, for example, a human face or the like is photographed as a subject.

As shown in FIG. 6, first, the CPU of the central control unit 1 determines whether or not a shooting mode is set (step S1).
Here, if it is determined that the shooting mode is set (step S1; YES), the imaging unit 3 starts a process of capturing a live view image of the subject, and the display control unit 6a of the display unit 6 The live view image is displayed on the display panel 6b based on the display image data generated by the image processing unit 4 (step S2).

Subsequently, the CPU of the central control unit 1 determines whether or not the user has pressed the shutter button of the operation input unit 8 halfway (step S3).
If it is determined that the shutter button is not half-pressed (step S3; NO), the CPU of the central control unit 1 returns the process to step S2, and the display control unit 6a displays a live view image. It is displayed on the panel 6b (step S2).

  If it is determined in step S3 that the shutter button has been pressed halfway (step S3; YES), the imaging control unit 3c starts, for example, contrast-type automatic focusing control (AF), and focuses on the subject. (Step S4). Then, the subject detection unit 4a of the image processing unit 4 performs a process of detecting a subject (for example, a human face) from the frame image captured by the imaging unit 3 while the subject is in focus (step S5). ; Subject detection processing).

Next, the measurement unit 5a of the motion processing unit 5 acquires the image data of the frame image generated by the image processing unit 4, measures the luminance values of a plurality of pixels of the frame image, and the distribution acquisition unit 5b Then, a luminance histogram (see FIG. 3A and the like) is generated and acquired based on the measured luminance values of the plurality of pixels of the frame image (step S6).
Subsequently, the representative value specifying unit 5c specifies a plurality of representative luminance values and subject luminance values from the luminance histogram acquired by the distribution acquisition unit 5b (step S7). For example, the representative value specifying unit 5c specifies a plurality of luminance values having the maximum number of pixels in the luminance histogram as representative luminance values, or sets the luminance value corresponding to the subject detected by the subject detecting unit 4a from the luminance histogram. The subject brightness value to be represented is specified.

Next, the representative value correction unit 5d reads the exposure setting condition 2a from the memory 2, and determines whether or not to correct the representative luminance value on the low luminance side and / or the high luminance side according to the exposure setting condition 2a. Determination is made (step S8). For example, the representative value correction unit 5d uses the first and second threshold values corresponding to the minimum exposure value Ev and the maximum exposure value Ev set according to the exposure setting condition 2a to represent the low-luminance-side representative luminance. It is determined whether or not the value is lower than a first threshold value corresponding to 4 Ev in the exposure value Ev, or whether or not the representative luminance value on the high luminance side is higher than a second threshold value corresponding to 17 Ev in the exposure value Ev. To determine.
If it is determined that the representative luminance value on the low luminance side and / or the high luminance side is to be corrected (at least one of the representative luminance values is corrected) (step S8; YES), the representative value correcting unit. 5d, for example, corrects a representative luminance value on the low luminance side lower than the first threshold value to the first threshold value, or corrects a representative luminance value on the high luminance side higher than the second threshold value to the second threshold value. (Step S9; see FIGS. 5A and 5B).
On the other hand, when it is determined that the representative luminance value on the low luminance side and / or the high luminance side is not corrected (no representative luminance value is corrected) (step S8; NO), the operation processing unit 5 performs step S9. Skip the process.

Thereafter, the intermediate value specifying unit 5e reads the exposure setting condition 2a from the memory 2, and specifies a predetermined number of intermediate luminance values according to the exposure setting condition 2a (step S10). For example, the intermediate value specifying unit 5e determines the interval between the low-luminance representative luminance value specified by the representative value specifying unit 5c and the subject luminance value (see FIG. 3A), or the subject specified by the representative value specifying unit 5c. A predetermined number of intermediate luminance values are obtained by equally dividing the luminance value and the representative luminance value on the high luminance side (see FIG. 3B) by a predetermined interval (for example, an interval corresponding to 1 Ev) defined in the exposure setting condition 2a. Is identified.
Next, the setting unit 5f reads the exposure setting condition 2a from the memory 2, and sets a plurality of exposure values Ev according to the exposure setting condition 2a (step S11). For example, the setting unit 5f converts a plurality of representative luminance values, subject luminance values, corrected representative luminance values, intermediate luminance values, and the like into luminance Bv of the reflected light of the corresponding subject, and a plurality of exposures according to the APEX relational expression. Set the value Ev.

Subsequently, the CPU of the central control unit 1 determines whether or not the user has fully pressed the shutter button of the operation input unit 8 (step S12).
Here, if it is determined that the shutter button is not fully pressed (step S12; NO), the CPU of the central control unit 1 performs processing for determining whether or not the shutter button is fully pressed for a predetermined time. Run repeatedly at intervals.

If it is determined in step S12 that the shutter button has been fully pressed (step S12; YES), the imaging control unit 5g sets a predetermined program line for each of the plurality of exposure values Ev set by the setting unit 5f. Based on the drawing, the aperture value Av, exposure time (shutter speed) Tv, ISO sensitivity Sv, and the like are adjusted to control photographing of the subject (step S13). That is, the imaging control unit 5g causes the image processing unit 4 to generate image data of a plurality of still images in which the exposure values Ev are changed by causing the imaging unit 3 to shoot a subject with each of the plurality of exposure values Ev.
The image processing unit 4 transfers the image data of a plurality of still images generated by photographing the subject at each of the plurality of exposure values Ev to the recording medium control unit 7 and records it on the recording medium 7a (step S14).
Thereby, the photographing process is terminated.

If it is determined in step S1 that the shooting mode is not set (step S1; NO), the CPU of the central control unit 1 controls execution of other various processes such as a reproduction process (for example) (step S1; NO). Step S15).
Each process of steps S5 to S11 may be performed after it is determined in step S12 that the shutter button is fully pressed (step S12; YES).

  As described above, according to the imaging apparatus 100 of the present embodiment, a plurality of representative luminance values are specified from the luminance histogram that is the distribution of luminance values of the frame image, and a plurality of representative luminance values are determined based on the specified plurality of representative luminance values. The exposure value Ev can be set by processing with a relatively light load. That is, it is possible to set a plurality of exposure values Ev only by specifying a plurality of representative luminance values from the luminance histogram, and a process for further setting an exposure value related to bracket shooting after automatic exposure control as in the prior art. Is no longer necessary. Thereby, it is possible to appropriately capture a plurality of images by controlling the photographing based on the plurality of set exposure values Ev.

  Further, since a predetermined number of intermediate luminance values are specified among a plurality of representative luminance values, and the exposure value Ev is set based on the specified predetermined number of intermediate luminance values, more images can be taken with different exposures. Therefore, it is possible to shoot without leaking an image of the exposure setting intended by the user without performing unnecessary shooting that is extremely bright or dark and extremely unlikely to be selected by the user.

  Further, the subject brightness value corresponding to the subject (for example, a human face area) detected from the brightness histogram is specified, and the exposure value Ev based on the specified subject brightness value is further set. It is also possible to ensure shooting with the exposure value Ev in consideration of the above.

  In addition, by specifying a representative brightness value lower than the subject brightness value and / or a higher representative brightness value from the brightness histogram, shooting is performed with a plurality of different exposure values Ev based on the brightness of the subject. For example, it is possible to select an image with an exposure setting intended by the user by comparing the brightness of the subject with the brightness of other portions from among a plurality of captured images. Furthermore, by specifying the representative luminance value having a larger number of pixels on the lower and / or higher side of the luminance value than the subject luminance value in the luminance histogram, the identification luminance value is based on the representative luminance value having a larger number of pixels. The exposure value Ev can be set. As a result, the exposure value Ev can be set giving priority to the brightness of a portion having a large area that has a large visual influence.

  Furthermore, the representative luminance value specified from the luminance histogram is lower than the first threshold value set on the lower side of the luminance value within the range in which the luminance value can be measured, or the luminance value is high. When the value is higher than the second threshold value set on the side, the exposure value Ev can be set appropriately based on the corrected representative luminance value by correcting the representative luminance value. That is, when the specified representative luminance value is lower than the first threshold value or higher than the second threshold value, if the exposure value Ev is set as it is based on the representative luminance value, it jumps white. The image is lost or crushed in black, and unnecessary shooting that is very unlikely for the user to select is performed. Therefore, it is possible to prevent unnecessary photographing by correcting the representative luminance value.

The present invention is not limited to the above-described embodiment, and various improvements and design changes may be made without departing from the spirit of the present invention.
For example, in the above embodiment, the intermediate luminance value is specified by equally dividing a plurality of representative luminance values at a predetermined interval (for example, an interval equivalent to 1 Ev). However, the method of specifying the intermediate luminance value can be arbitrarily changed as appropriate. Specifically, the intermediate value specifying unit 5e narrows the interval between the plurality of representative luminance values specified by the representative value specifying unit 5c and is closer to the subject luminance value, and sets a predetermined number of intermediate values. You may specify.

  That is, for example, as shown in FIG. 7, as the exposure setting condition 102a, for example, the maximum number of exposure values Ev is “8”, and the exposure value corresponding to the subject brightness value is the intermediate brightness value closest to the subject brightness value. "+1/2 Ev and / or -1/2 Ev equivalent" set to +1/2 Ev and / or -1/2 Ev with respect to Ev, corresponding to the subject luminance value as the intermediate luminance value second closest to the subject luminance value “+ 3 / 2Ev and / or −3 / 2Ev equivalent” set to + 3 / 2Ev and / or −3 / 2Ev with respect to the exposure value Ev, and other intermediate luminance values as representative luminance on the high luminance side from the subject luminance value Among the intervals up to the value or the representative luminance value on the low luminance side, the wide side is preferentially set to be equal intervals, “the wide interval side is preferentially equal intervals”, and the minimum value of the exposure value Ev is “4Ev”. And maximum "17Ev" and the like are defined as.

Then, the intermediate value specifying unit 5e reads the exposure setting condition 102a from the memory 2, and in accordance with the exposure setting condition 102a, the subject luminance value specified by the representative value specifying unit 5c and the representative having a higher luminance value on the high luminance side. Between the luminance values (see FIG. 8A), between the representative luminance value on the low luminance side and the subject luminance value specified by the representative value specifying unit 5c, and between the subject luminance value and the representative luminance value on the high luminance side (FIG. 8 ( b)), a predetermined number of intermediate luminance values are specified between a representative luminance value and a subject luminance value (not shown) having a higher luminance value on the low luminance side specified by the representative value specifying unit 5c.
For example, when the exposure value Ev corresponding to the subject luminance value is 6 Ev and the exposure value Ev corresponding to the representative luminance value on the high luminance side is 15 Ev as in the luminance histogram shown in FIG. The unit 5e sets an intermediate luminance value corresponding to an exposure value Ev of 6.5 Ev as an intermediate luminance value closest to the subject luminance value, and an exposure value Ev of 7.5 Ev as an intermediate luminance value second closest to the subject luminance value. Between the intermediate luminance value corresponding to 7.5 Ev and the representative luminance value on the high luminance side so that the set number is 8 at the maximum and the interval between the luminance values is equal to or more than 3/2 Ev. Are equally divided to set an intermediate luminance value. Further, as in the luminance histogram shown in FIG. 8B, the exposure value Ev corresponding to the subject luminance value is 10 Ev, the exposure value Ev corresponding to the representative luminance value on the low luminance side is 5 Ev, and the high luminance side When the exposure value Ev corresponding to the representative luminance value is 15.5Ev, the intermediate value specifying unit 5e has intermediate luminance values corresponding to the exposure values Ev of 9.5Ev and 10.5Ev as the intermediate luminance values closest to the subject luminance value. And an intermediate luminance value corresponding to an exposure value Ev of 8.5 Ev and 11.5 Ev is set as an intermediate luminance value that is the second closest to the subject luminance value. The intermediate luminance value is set by equally dividing the intermediate luminance value corresponding to 11.5 Ev and the representative luminance value on the high luminance side so as to be equal to or greater than / 2 Ev.

  In the drawings of FIGS. 8A and 8B, the representative luminance value is represented by a white arrow and the subject luminance value is represented by an arrow filled with black, as in the above embodiment. The intermediate luminance value is represented by a thin arrow. Further, the exposure value Ev converted according to the APEX relational expression is shown side by side corresponding to each of the representative luminance value, the subject luminance value, and the intermediate luminance value.

  Therefore, the closer to the subject brightness value between the specified representative brightness values, the narrower the interval between adjacent ones is specified, and a predetermined number of intermediate brightness values are specified. Thus, it is possible to take an image that is likely to be closer to the exposure setting intended by the user.

  In the above embodiment, one representative luminance value on the low luminance side and one representative luminance value on the high luminance side are specified for each subject luminance value, but the number of representative luminance values is an example. It is not limited to this. That is, all representative luminance values having a larger number of pixels than the subject luminance value may be specified, 2 on the low luminance side, 0 on the high luminance side, or 1 on the low luminance side, 2 on the high luminance side, For example, the representative luminance value may be specified.

  In the shooting process of the above embodiment, the exposure value Ev corresponding to each of the specified representative luminance value, subject luminance value, and intermediate luminance value is set, but this is an example. The exposure value Ev corresponding to only the subject luminance value and the intermediate luminance value, the exposure value Ev corresponding to only the intermediate luminance value, the representative luminance value, and the subject luminance value only. The exposure value Ev may be set.

Further, in the shooting processing of the above embodiment, the human face or the like is taken as a subject, but is not limited to this example, and does not include a subject such as a human face, For example, it may be a scene or the like.
In this case, the intermediate luminance value may be specified at regular intervals between the representative luminance value on the low luminance side and the representative luminance value on the high luminance side. Good. For example, the luminance value closer to the representative luminance value on the low luminance side and / or the representative luminance value on the high luminance side may be specified to be dense, and conversely, the representative luminance value on the low luminance side and the high luminance side An average luminance value with the representative luminance value may be calculated and specified so that the luminance values closer to the calculated average luminance value are dense.
Further, the number of representative luminance values to be specified may be three or more. If the representative luminance value is a predetermined number of pixels or more, three or more are specified, and an intermediate luminance value is determined from the specified three or more representative luminance values. May be specified.
Further, as described above, the exposure value Ev corresponding to only each of the intermediate luminance values may be set.

In the above embodiment, a plurality of representative luminance values are specified from a luminance histogram in a frame image, with a predetermined parameter as luminance, and a plurality of images for shooting are determined based on the plurality of specified representative luminance values. However, the exposure value is set as an example and is not limited to this, and can be arbitrarily changed.
That is, for example, using a predetermined parameter as a hue, a plurality of representative color values are specified from a distribution of hues in a frame image, and color temperature adjustment in auto white balance (AWB) is performed based on the specified plurality of representative color values A plurality of gain values may be set. In addition, for example, by specifying a predetermined parameter as an area of multi-area AF, a representative value of a plurality of subject distances is specified from a distribution of in-focus areas in a plurality of frame images acquired while varying a focus position, A plurality of shooting distances in automatic focus control (AF) may be set based on the representative values of the plurality of specified subject distances.

  Furthermore, the configuration of the imaging apparatus 100 described above is an example and is not limited thereto. For example, it is not always necessary to include the imaging unit 3, and any configuration may be used as long as the device controls imaging based on a plurality of imaging setting values.

In addition, in the above embodiment, the functions of the acquisition unit, the first specifying unit, the setting unit, and the imaging control unit are executed by the CPU of the central control unit 1 of the imaging apparatus 100 by a predetermined program or the like. It is good also as a structure implement | achieved by.
That is, a program including an acquisition processing routine, a specific processing routine, a setting processing routine, and a photographing control processing routine is recorded in a program memory (not shown) for recording the program. Then, the CPU of the central control unit 1 may function as a means for acquiring a parameter value distribution of a predetermined parameter related to imaging in the captured image by an acquisition processing routine. Further, the CPU of the central control unit 1 may be caused to function as means for specifying a plurality of representative values from the acquired distribution of the parameter values by the specifying process routine. Further, the CPU of the central control unit 1 may function as a means for setting a plurality of shooting setting values for shooting based on a plurality of specified representative values by the setting processing routine. In addition, the CPU of the central control unit 1 may function as a means for controlling shooting based on a plurality of set shooting setting values and acquiring a plurality of captured images by a shooting control processing routine.

  Similarly, the functions as the measurement unit, the correction unit, the detection unit, and the second specifying unit may be realized by executing a predetermined program or the like by the CPU of the central control unit 1.

  Furthermore, as a computer-readable medium storing a program for executing each of the above processes, a non-volatile memory such as a flash memory or a portable recording medium such as a CD-ROM is applied in addition to a ROM or a hard disk. Is also possible. A carrier wave is also used as a medium for providing program data via a predetermined communication line.

Although several embodiments of the present invention have been described, the scope of the present invention is not limited to the above-described embodiments, but includes the scope of the invention described in the claims and equivalents thereof.
The invention described in the scope of claims attached to the application of this application will be added below. The item numbers of the claims described in the appendix are as set forth in the claims attached to the application of this application.
[Appendix]
<Claim 1>
An acquisition means for acquiring a distribution of parameter values of predetermined parameters relating to shooting in the captured image;
First specifying means for specifying a plurality of representative values from the distribution of the parameter values acquired by the acquiring means;
Setting means for setting a plurality of shooting setting values for shooting based on the plurality of representative values specified by the first specifying means;
Shooting control means for controlling shooting based on the plurality of shooting setting values set by the setting means and acquiring a plurality of captured images;
An imaging control apparatus comprising:
<Claim 2>
A second specifying means for specifying a predetermined number of intermediate values among the plurality of representative values specified by the first specifying means;
The setting means sets the shooting setting value based on the predetermined number of intermediate values specified by the second specifying means in addition to or instead of the shooting setting values based on the plurality of representative values. The imaging control apparatus according to claim 1, wherein:
<Claim 3>
It further comprises detection means for detecting a subject from the captured image,
The first specifying means further specifies a subject parameter value corresponding to a subject detected by the detecting means from the parameter value distribution,
The imaging control apparatus according to claim 2, wherein the setting unit further sets the shooting setting value based on the subject parameter value specified by the first specifying unit.
<Claim 4>
The second specifying means specifies the predetermined number of intermediate values by narrowing an interval between the plurality of representative values specified by the first specifying means and becoming closer to the subject parameter value as being closer to the subject parameter value. The imaging control apparatus according to claim 3.
<Claim 5>
It further comprises detection means for detecting a subject from the captured image,
The first specifying means further specifies a subject parameter value corresponding to a subject detected by the detecting means from the parameter value distribution,
The imaging control apparatus according to claim 1, wherein the setting unit further sets the shooting setting value based on the subject parameter value specified by the first specifying unit.
<Claim 6>
The first specifying unit specifies a representative value having a lower parameter value and / or a higher representative value than the subject parameter value from the parameter value distribution. The imaging control device according to item.
<Claim 7>
The first specifying means preferentially specifies a representative value having a higher frequency on a lower and / or higher parameter value side than the subject parameter value in the parameter value distribution. Item 7. The imaging control device according to Item 6.
<Claim 8>
Measuring means for measuring the parameter value in the captured image;
The representative value specified by the first specifying means is lower than a first threshold value set on the lower side of the parameter value within a range in which the parameter value can be measured by the measuring means, or Correction means for correcting the representative value when the parameter value is higher than the second threshold value set on the higher parameter value side,
The imaging control apparatus according to claim 1, wherein the setting unit sets the shooting setting value based on the representative value corrected by the correction unit.
<Claim 9>
The predetermined parameter is brightness,
The first specifying unit specifies a plurality of representative luminance values from the distribution of luminance values acquired by the acquiring unit,
9. The setting unit according to claim 1, wherein the setting unit sets a plurality of exposure values for photographing based on the plurality of representative luminance values specified by the first specifying unit. The imaging control device according to 1.
<Claim 10>
An imaging control method using an imaging control device,
Processing for obtaining a distribution of parameter values of predetermined parameters related to shooting in the captured image;
A process of identifying a plurality of representative values from the acquired distribution of parameter values;
Processing for setting a plurality of shooting setting values for shooting based on the plurality of identified representative values;
A process of controlling shooting based on the plurality of set shooting setting values and acquiring a plurality of captured images;
An imaging control method comprising:
<Claim 11>
In the computer of the imaging control device,
A function of acquiring a parameter value distribution of a predetermined parameter relating to shooting in a captured image;
A function of identifying a plurality of representative values from the acquired distribution of parameter values;
A function of setting a plurality of shooting setting values for shooting based on the plurality of specified representative values;
A function of controlling shooting based on the set plurality of shooting setting values and acquiring a plurality of captured images;
A program characterized by realizing.

100 imaging device 1 central control unit 3 imaging unit 4 image processing unit 4a subject detection unit 5 operation processing unit 5a measurement unit 5b distribution acquisition unit 5c representative value specifying unit 5d representative value correcting unit 5e intermediate value specifying unit 5f setting unit 5g imaging control Part

Claims (12)

An acquisition means for acquiring a distribution of parameter values of predetermined parameters relating to shooting in the captured image;
Detecting means for detecting a subject from within the captured image;
First specifying means for specifying a plurality of representative values from the parameter value distribution acquired by the acquiring means and subject parameter values corresponding to the subject detected by the detecting means ;
Second specifying means for specifying a predetermined number of intermediate values among the plurality of representative values specified by the first specifying means;
A plurality of shootings for shooting based on the plurality of representative values specified by the first specifying unit , the subject parameter value, and the predetermined number of intermediate values specified by the second specifying unit A setting means for setting a setting value;
Shooting control means for controlling shooting based on the plurality of shooting setting values set by the setting means and acquiring a plurality of captured images;
Equipped with a,
The second specifying unit is configured such that the closer to the subject parameter value between the plurality of representative values specified by the first specifying unit, the narrower the interval between adjacent ones of the specified number of intermediate values specified. imaging control apparatus characterized by specifying the. An acquisition means for acquiring a distribution of parameter values of predetermined parameters relating to shooting in the captured image;
Detecting means for detecting a subject from within the captured image;
First specifying means for specifying a plurality of representative values from the parameter value distribution acquired by the acquiring means and subject parameter values corresponding to the subject detected by the detecting means;
Second specifying means for specifying a predetermined number of intermediate values among the plurality of representative values specified by the first specifying means;
Setting means for setting a plurality of shooting setting values for shooting based on the subject parameter value specified by the first specifying means and the predetermined number of intermediate values specified by the second specifying means When,
Shooting control means for controlling shooting based on the plurality of shooting setting values set by the setting means and acquiring a plurality of captured images;
With
The second specifying unit is configured such that the closer to the subject parameter value between the plurality of representative values specified by the first specifying unit, the narrower the interval between adjacent ones of the specified number of intermediate values specified. An image pickup control device characterized by: An acquisition means for acquiring a distribution of parameter values of predetermined parameters relating to shooting in the captured image;
First specifying means for specifying a plurality of representative values from the distribution of the parameter values acquired by the acquiring means;
Measuring means for measuring the parameter value in the captured image;
At least one of the plurality of representative values specified by the first specifying means is more than a first threshold value set on the lower side of the parameter value within a range in which the parameter value can be measured by the measuring means. Correction means for correcting the representative value when it is lower or higher than the second threshold value set on the higher side of the parameter value;
Setting means for setting a plurality of shooting setting values for shooting based on the plurality of representative values including the representative value corrected by the correction means;
Shooting control means for controlling shooting based on the plurality of shooting setting values set by the setting means and acquiring a plurality of captured images;
An imaging control apparatus comprising: The imaging according to claim 1, wherein the first specifying unit specifies a representative value having a lower parameter value and / or a higher representative value than the subject parameter value from the parameter value distribution. Control device. The first specifying means preferentially specifies a representative value having a higher frequency on a lower and / or higher parameter value side than the subject parameter value in the parameter value distribution. Item 5. The imaging control device according to Item 4 . The predetermined parameter is brightness,
The first specifying unit specifies a plurality of representative luminance values from the distribution of luminance values acquired by the acquiring unit,
The imaging control apparatus according to claim 1, wherein the imaging setting value is an exposure value . An imaging control method using an imaging control device,
Processing for obtaining a distribution of parameter values of predetermined parameters related to shooting in the captured image;
A process of detecting a subject from the captured image;
A process of specifying a plurality of representative values from the acquired distribution of the parameter values and subject parameter values corresponding to the subject to be detected;
A process of identifying a predetermined number of intermediate values among the plurality of identified representative values;
A process of setting a plurality of shooting setting values for shooting based on the plurality of identified representative values, the subject parameter value, and the predetermined number of intermediate values;
A process of controlling shooting based on the plurality of set shooting setting values and acquiring a plurality of captured images;
Including
An imaging control method, characterized in that the closer to the subject parameter value between the plurality of representative values, the narrower the interval between adjacent ones of a specified number of intermediate values that are specified. An imaging control method using an imaging control device,
Processing for obtaining a distribution of parameter values of predetermined parameters related to shooting in the captured image;
A process of detecting a subject from the captured image;
A process of specifying a plurality of representative values from the acquired distribution of the parameter values and subject parameter values corresponding to the subject to be detected;
A process of identifying a predetermined number of intermediate values among the plurality of identified representative values;
A process of setting a plurality of shooting setting values for shooting based on the specified subject parameter value and the predetermined number of intermediate values;
A process of controlling shooting based on the plurality of set shooting setting values and acquiring a plurality of captured images;
Including
An imaging control method, characterized in that the closer to the subject parameter value between the plurality of representative values, the narrower the interval between adjacent ones of a specified number of intermediate values that are specified. An imaging control method using an imaging control device,
Processing for obtaining a distribution of parameter values of predetermined parameters related to shooting in the captured image;
A process of identifying a plurality of representative values from the acquired distribution of parameter values;
Processing for measuring the parameter value in the captured image;
At least one of the plurality of representative values specified is lower than a first threshold value set on the lower side of the parameter value within a range in which the parameter value can be measured, or is higher than the parameter value A process of correcting the representative value when higher than the second threshold value set on the side;
A process of setting a plurality of shooting setting values for shooting based on the plurality of representative values including the corrected representative value;
A process of controlling shooting based on the plurality of set shooting setting values and acquiring a plurality of captured images;
An imaging control method comprising: In the computer of the imaging control device,
A function of acquiring a parameter value distribution of a predetermined parameter relating to shooting in a captured image;
A function of detecting a subject from the captured image;
A function for identifying a plurality of representative values and subject parameter values corresponding to a detected subject from the acquired distribution of the parameter values;
A function of identifying a predetermined number of intermediate values among the plurality of identified representative values;
A function of setting a plurality of shooting setting values for shooting based on the plurality of representative values specified, the subject parameter value, and the predetermined number of intermediate values;
A function of controlling shooting based on the set plurality of shooting setting values and acquiring a plurality of captured images;
Realized
A program characterized in that the closer to the subject parameter value between the plurality of representative values, the narrower the interval between adjacent ones of a specified number of intermediate values that are specified. In the computer of the imaging control device,
A function of acquiring a parameter value distribution of a predetermined parameter relating to shooting in a captured image ;
A function of detecting a subject from the captured image;
A function for identifying a plurality of representative values and subject parameter values corresponding to a detected subject from the acquired distribution of the parameter values ;
A function of identifying a predetermined number of intermediate values among the plurality of identified representative values;
A function of setting a plurality of shooting setting values for shooting based on the specified subject parameter value and the predetermined number of intermediate values ;
A function of controlling shooting based on the set plurality of shooting setting values and acquiring a plurality of captured images ;
Realized ,
A program characterized in that the closer to the subject parameter value between the plurality of representative values, the narrower the interval between adjacent ones of a specified number of intermediate values that are specified . In the computer of the imaging control device,
A function of acquiring a parameter value distribution of a predetermined parameter relating to shooting in a captured image;
A function for identifying a plurality of representative values from the obtained distribution of parameter values;
A function of measuring the parameter value in the captured image;
At least one of the plurality of representative values specified is lower than a first threshold value set on the lower side of the parameter value within a range in which the parameter value can be measured, or is higher than the parameter value A function of correcting the representative value when it is higher than the second threshold value set on the side,
A function of setting a plurality of shooting setting values for shooting based on the plurality of representative values including the corrected representative value;
A function of controlling shooting based on the set plurality of shooting setting values and acquiring a plurality of captured images;
A program characterized by realizing.

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