JP2012195760A - Shooting setting adjustment system, information processing unit, and control method and control program therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust the shooting parameters easily when shooting is performed using the same shooting parameters.SOLUTION: Master chart image data obtained as a result of imaging a predetermined color chart 104 by the imaging device 102 of a master studio 100, and the shooting parameters set in the imaging device are sent, as the master shooting parameters, to individual studios 110 and 120. In the individual studio, the master shooting parameters are set as the initial shooting parameters in imaging devices 112 and 123, predetermined color charts 114 and 124 are captured by the imaging device to obtain the chart image data, the chart image data is compared with the master chart image data, and the shooting parameters of the individual studios are changed according to the comparison results.

Description

  The present invention relates to a technique for adjusting shooting conditions of an imaging apparatus so that images of the same quality can be shot in shooting studios that are remote from each other.

  In general, when taking a souvenir photo, a photo studio is used to print a souvenir photo using image data obtained as a result of photographing a subject with a plurality of digital cameras (for example, patent documents). 1).

JP 2003-259124 A

  By the way, when taking a commemorative photo, shooting parameters (shutter speed, aperture value, ISO value, color conversion matrix, etc.) serving as a reference are created at the center for each shooting scene (for example, wedding ceremony, 753). The shooting parameters are distributed to each shooting studio so that the color quality of each shooting scene is kept constant.

  However, even if each shooting studio uses the same shooting parameters delivered from the center, the image data shot for each shooting studio is different because of differences in external environment such as shooting equipment, light source, and indoor conditions. The color may be different.

  For this reason, conventionally, in order to make the image data have the same color in all the shooting studios, it is necessary for a technical staff having specialized knowledge to manually adjust the shooting parameters. Therefore, a technical staff must be allocated for each shooting studio, and there is a problem that it is difficult for the shooting studio to reduce costs.

  Accordingly, an object of the present invention is to provide a shooting setting adjustment system, an information processing apparatus, a control method therefor, and a control program that can easily adjust shooting parameters when shooting is performed using the same shooting parameters. It is in.

  In order to achieve the above object, a shooting setting adjustment system according to the present invention is configured such that a master shooting processing device and at least one sub shooting processing device are connected, and the sub shooting according to shooting information obtained by the master shooting processing device. An imaging setting adjustment system for adjusting imaging settings in an imaging processing device, wherein the master imaging processing device captures a master by imaging a predetermined color chart with a master imaging device provided in the master imaging processing device. Image acquisition means for obtaining chart image data, imaging parameter acquisition means for acquiring imaging parameters set in the master imaging device and setting them as master imaging parameters, the master chart image data and the master imaging parameters as the imaging information Shooting information distribution hand distributed to the sub-shooting processing device The sub-shooting processing device receives the shooting information and sets the master shooting parameter as an initial sub-shooting parameter in a sub-shooting device provided in the sub-shooting processing device; and Sub image acquisition means for capturing the predetermined color chart with the sub imaging device to obtain sub chart image data, and comparing the master chart image data with the sub chart image data, and according to the comparison result Imaging parameter changing means for changing the sub imaging parameter.

An information processing apparatus according to the present invention is an information processing apparatus for adjusting shooting settings in accordance with shooting information sent from a master shooting processing apparatus, and the shooting information includes a master provided in the master shooting processing apparatus. An image capturing apparatus captures a predetermined color chart and includes master chart image data and a master image capturing parameter that is an image capturing parameter set in the master image capturing apparatus. Shooting parameter setting means for setting shooting parameters as initial sub shooting parameters in the sub imaging device;
An image acquisition unit that captures the predetermined color chart with the sub-imaging device to obtain sub-chart image data, and compares the master chart image data with the sub-chart image data, and according to the comparison result And a photographing parameter changing means for changing the sub photographing parameter.

  An information processing apparatus according to the present invention is an information processing apparatus that adjusts an exposure parameter, which is a shooting parameter in an imaging apparatus, and is a result of imaging a color chart including a predetermined gray image captured by the imaging apparatus. Display control means for displaying an image on a display unit and displaying on the display unit an exposure parameter used when obtaining the captured image, and adjustment of the exposure parameter is designated, and exposure adjustment in the captured image When a position is specified, a luminance calculation unit that calculates an average luminance in a predetermined region centered on the exposure adjustment position, and an exposure correction amount is determined according to a difference between the average luminance and the luminance at the predetermined exposure. Exposure adjustment determination means for adjusting, and parameter adjustment means for adjusting the exposure parameter according to the exposure correction amount, Serial display control means, characterized in that by correcting the captured image in accordance with the exposure parameters of the adjusted re displayed on the display unit.

  According to the present invention, it is possible to easily adjust the shooting parameters of the image pickup apparatus for each shooting studio even when there is no technical staff having specialized knowledge in the shooting studio. As a result, colors can be unified in a plurality of shooting studios, and quality standards can be maintained.

  Furthermore, according to the present invention, an exposure for obtaining an image with an appropriate exposure while displaying a color chart image including a predetermined gray photographed by the imaging device on the information processing device and confirming the image after the exposure adjustment. Parameters can be easily obtained.

It is a figure which shows the structure about an example of the imaging | photography setting adjustment system by the 1st Embodiment of this invention. It is a block diagram for demonstrating the information processing apparatus used in a master studio in the imaging | photography setting adjustment system shown in FIG. It is a block diagram for demonstrating the separate studio information processing apparatus used in an individual studio in the imaging | photography setting adjustment system shown in FIG. It is a flowchart for demonstrating the process of master imaging | photography information delivery in the master studio shown in FIG. FIG. 3 is a diagram illustrating an example of a master shooting information distribution screen displayed on a UI unit illustrated in FIG. 2. It is a flowchart for demonstrating the adjustment imaging | photography process performed in the separate studio shown in FIG. It is a flowchart for demonstrating the process of the adjustment imaging | photography control part shown in FIG. 3 when an adjustment item is exposure adjustment. 8A and 8B are diagrams for explaining proper exposure determination in exposure adjustment shown in FIG. 7, in which FIG. 7A is a diagram showing color chart image data taken in the master studio shown in FIG. 1, and FIG. It is a figure which shows the color chart image data image | photographed in the studio. It is a flowchart for demonstrating the process of the adjustment imaging | photography control part shown in FIG. 3 when an adjustment item is contrast adjustment. It is a flowchart for demonstrating the process of the adjustment imaging | photography control part shown in FIG. 3 when an adjustment item is color adjustment. It is a figure which shows the structure about an example of the imaging | photography setting adjustment system by the 2nd Embodiment of this invention. It is a figure for demonstrating the hardware constitutions of the imaging device and information processing apparatus which are shown in FIG. It is a flowchart for demonstrating the advance preparation of exposure parameter adjustment in the imaging | photography setting adjustment system shown in FIG. 13 is a flowchart for explaining an operation when the imaging apparatus illustrated in FIG. 12 receives a shooting instruction. 13 is a flowchart for explaining an operation when the imaging apparatus shown in FIG. 12 receives imaging parameters. It is a figure which shows an example of the GUI screen displayed on the display part of the information processing apparatus shown in FIG. 13 is a flowchart for explaining a process when a photographing instruction is received from an operator in the information processing apparatus illustrated in FIG. 12. FIG. 13 is a flowchart for explaining processing when specifying an exposure adjustment position in the information processing apparatus shown in FIG. 12. FIG. 13 is a flowchart for describing processing when exposure parameters are individually input in the information processing apparatus illustrated in FIG. 12. It is a figure for demonstrating the exposure adjustment step number and weighting in the exposure determination demonstrated in FIG. 18, Comprising: (a) shows the table | surface used when calculating | requiring exposure adjustment amount according to an average luminance value in exposure adjustment position designation | designated. FIG. 4B is a diagram showing a table used when obtaining the number of exposure adjustment steps from the exposure adjustment amount, FIG. 4C is a diagram showing a table used when obtaining the aperture change amount from the exposure adjustment amount, and FIG. It is a figure which shows the table | surface used when calculating | requiring the change amount of ISO speed from exposure adjustment amount.

  Hereinafter, an example of a photographing setting adjustment system according to an embodiment of the present invention will be described with reference to the drawings. The embodiment described below is an example, and should be appropriately modified or changed according to the configuration of the apparatus to which the present invention is applied and various conditions, and the present invention is limited to the following embodiment. It is not a thing.

(First embodiment)
Here, a shooting setting adjustment system for obtaining shooting results (image data) having the same color even when shooting at any store in a photo studio having a plurality of stores (shooting studios) will be described.

  FIG. 1 is a diagram showing the configuration of an example of a shooting setting adjustment system according to the first embodiment of the present invention.

  The master studio 100 is a studio that determines shooting parameters suitable for each shooting scene (for example, wedding ceremony or 753) used in all shooting studios (also referred to as individual studios). The master studio 100 is also a photography studio.

  In the master studio 100, the imaging device 102 (master imaging device) outputs shutter speed, aperture value, ISO value, color conversion matrix, and the like as imaging parameters to the information processing device 103 (master imaging processing device). Then, the imaging device 102 outputs, for example, image data obtained as a result of photographing the subject 105 to the information processing device 103. Further, the imaging apparatus 102 can output information (photographing equipment information) related to an external light source such as a mounted lens and a strobe.

  The color chart 104 is a defined color chart including a gray chart composed of a plurality of achromatic patches.

  Each of the individual studios 110 and 120 is a studio of a studio photo studio that provides photography services to customers. The individual studios 110 and 120 are provided with imaging devices 112 and 122 (sub imaging devices), color charts 114 and 124, and individual studio information processing devices 111 and 121 (sub imaging processing devices), respectively.

  In the illustrated example, only two individual studios 110 and 120 are shown, but actually there are a plurality of individual studios, and each individual studio has the same configuration. Therefore, in the following description, the description will be made with attention paid to the individual studio 110.

  In the individual studio 110, the individual studio information processing apparatus 111 collects shooting parameters determined in the master studio 100, shooting equipment information, and image data obtained by shooting the color chart 104 (subchart image data). The individual studio information processing apparatus 111 sets shooting parameters (sub-shooting parameters) for the imaging apparatus 112 and instructs remote shooting. Furthermore, the individual studio information processing apparatus 111 acquires image data obtained as a result of shooting by the imaging apparatus 112.

  The color chart 114 used in the individual studio 110 is used to match the luminance and color with the color chart 104 of the master studio 100. This color chart 114 is the same as the color chart 104 used in the master studio 100.

  In addition, it is desirable to use the same product as that used in the master studio 100 for the imaging device 112 and an external light source such as a strobe attached to the imaging device 112 in order to match the characteristics of exposure and color development.

  FIG. 2 is a block diagram for explaining the information processing apparatus 103 used in the master studio 100 in the photographing setting adjustment system shown in FIG.

  The information processing apparatus 103 includes a user interface (UI) unit 201. The UI unit 201 provides a user interface that instructs the imaging staff to start master imaging information distribution processing.

  Here, the master imaging information distribution process is a process in which the information processing apparatus 103 collects current imaging parameters, color chart captured images, and imaging equipment information from the imaging apparatus 102 and distributes them to the individual studios 110 and 120. .

  The remote control unit 205 is logically connected to the imaging apparatus 102, and performs collection of shooting parameters, remote shooting instructions, and acquisition of shot image data (for example, color chart shot image data).

  The shooting parameter storage unit 202 stores the shooting parameters acquired by the remote control unit 205. The captured image storage unit 203 stores the color chart captured image data acquired by the remote control unit 205.

  The photographic equipment information storage unit 207 stores photographic equipment information such as information relating to the imaging device, lens information, and external light source information collected by the remote control unit 205. The distribution control unit 204 receives a master imaging information distribution processing start instruction from the UI unit 201.

  When receiving the master photographing information distribution processing start instruction, the distribution control unit 204 performs remote photographing of the color chart via the remote control unit 205. The distribution control unit 204 collects shooting parameters suitable for the shooting scene, color chart image data shot with the shooting parameters, and shooting equipment information to create master shooting information. The distribution control unit 204 distributes the master shooting information to the individual studios 110 and 120 via the inter-studio communication control unit 206.

  FIG. 3 is a block diagram for explaining an individual studio information processing apparatus used in an individual studio in the photographing setting adjustment system shown in FIG.

  Here, the individual studio information processing apparatus 111 used in the individual studio 110 is shown, but the individual studio information processing apparatus 121 used in the individual studio 120 also has the same configuration as the individual studio information processing apparatus 111. ing.

  The individual studio information processing apparatus 111 has an inter-studio communication control unit 314. The inter-studio communication control unit 314 acquires master shooting information distributed from the inter-studio communication control unit 206 of the master studio 100. Of the master shooting information, shooting parameters are stored in the master shooting parameter storage unit 312. Of the master shooting information, the color chart image is stored in the master chart image storage unit 313. Of the master shooting information, the shooting equipment information is stored in the master shooting equipment information storage unit 323.

  The inter-studio communication control unit 314 notifies the UI unit 319 of the acquired master shooting information. As a result, the UI unit 319 displays the master shooting information acquisition status for each shooting scene on the screen. In addition, the UI unit 319 provides a user interface for instructing the staff of the individual studio 110 to start the adjustment shooting process.

  Here, the adjustment shooting process is performed so that the shooting of the color chart 114 is repeated while changing the master shooting parameter from the initial value (initial sub-shooting parameter), and is adjusted so as to approach the brightness, contrast, and color of the master chart image data. It is processing to do.

  This adjustment shooting process solves the problem that even in the image data obtained as a result of shooting with the same shooting parameters, the color of the image data differs depending on the shooting environment of the master studio 100 and the individual studio 110 or 120. This is a process to be performed. This adjustment shooting process needs to be performed for each shooting scene, and is performed before commercial shooting for a customer.

  The remote control unit 315 is logically connected to the image capturing apparatus 112, sets shooting parameters for the image capturing apparatus 112, acquires photographic equipment information from the image capturing apparatus 112, and acquires a remote shooting instruction and captured image data. I do.

  The warning display control unit 320 receives a notification from the adjustment shooting control unit 321 and displays a warning on the UI unit 319. The shooting parameter control unit 318 sets shooting parameters of the imaging device 112 via the remote control unit 315. At the time of adjustment shooting, the shooting parameter control unit 318 acquires the master shooting parameter from the master shooting parameter storage unit 312 and sets it as an initial value in the imaging device 112. Thereafter, the shooting parameter control unit 318 changes the shooting parameter of the imaging apparatus in response to an instruction from the adjustment shooting control unit 321.

  The photographed image storage unit 316 receives photographed image data obtained as a result of photographing by the imaging device 112 from the remote control unit 315 and stores it. The imaging equipment information storage unit 322 stores imaging equipment information collected by the remote control unit 315, such as information (imaging apparatus information), attached lens information, and external light source information.

  The comparison unit 317 compares the master chart image data stored in the master chart image storage unit 313 with the color chart image data stored in the photographed image storage unit 316 and uses the difference information (also simply referred to as difference). The image is sent to the adjustment shooting control unit 321. Specifically, the comparison unit 317 compares the brightness and hue / saturation of the designated patches, and the comparison unit 317 receives an instruction from the adjustment shooting control unit 321 for the items to be compared.

  Further, the comparison unit 317 collects information from the master imaging equipment information storage unit 323 and the imaging equipment information storage unit 322, and the camera model (imaging device model), lens model, and external light source equipment are used in the master studio. Compare whether or not they are equivalent.

  When receiving the instruction to start the adjustment shooting process from the UI unit 319, the adjustment shooting control unit 321 performs the adjustment shooting process according to the following procedure.

  The adjustment shooting control unit 321 instructs the imaging device 112 to perform remote shooting via the remote control unit 315, and images the color chart 114 by the imaging device 112. Subsequently, the adjustment shooting control unit 321 compares the color chart image data of the current shooting acquired from the imaging device 112 and the master chart image data by the comparison unit 317, and determines shooting parameters for the next shooting.

  The adjustment shooting control unit 321 instructs the shooting parameter control unit 318 to set shooting parameters, and changes the shooting parameters in the imaging device 112. In this way, remote shooting is repeated while changing the shooting parameters. When the shooting parameter closest to the master chart image data is finally detected, the adjustment shooting control unit 321 stores the shooting parameter in the shooting parameter storage unit 324 as a shooting parameter dedicated to the individual studio of the scene, and completes the adjustment shooting process. .

  FIG. 4 is a flowchart for explaining a process of distributing the master shooting information in the master studio 100 shown in FIG.

  Here, with reference to FIG. 2 and FIG. 4, the operation | movement at the time of the master imaging | photography information delivery in the master studio 100 is demonstrated.

  First, in step S401, the master studio 100 determines shooting parameters according to the shooting scene. Step S401 is performed by a technical staff having specialized knowledge regarding photographing in the master studio 100. Here, it is most suitable when shooting a certain shooting scene (for example, a portrait of a bride wearing a white dress) by repeatedly shooting the subject 105 suitable for the shooting scene while changing the shooting parameters of the imaging device 102. The shooting parameters that are considered to be determined are determined.

  Subsequently, the user (that is, the staff of the master studio 100) gives the above-described master photographing information distribution processing start instruction (step S402). Here, the color chart 104 is installed at a predetermined position, and the staff issues a master imaging information distribution processing start instruction from the UI unit 201 of the information processing apparatus 103. When the UI unit 201 receives a master shooting information distribution process start instruction, the UI unit 201 requests the distribution control unit 204 to execute the master shooting information distribution process.

  Here, the master shooting information distribution method will be described. Since the master shooting information is specific to a certain shooting scene, the UI unit 201 can select or name a name that uniquely indicates the shooting scene. .

  FIG. 5 is a diagram illustrating an example of a master photographing information distribution screen displayed on the UI unit 201 illustrated in FIG.

  In FIG. 5, a master shooting information distribution screen 500 is a screen for instructing master shooting information distribution. On the master shooting information distribution screen 500, camera information 501, a shooting scene name entry field 502, and a start button 503 are displayed.

  In the camera information 501, information related to the imaging device 102 to which the information processing device 103 is connected, imaging equipment information that can be collected by the imaging device 102, and imaging parameters are displayed. The shooting scene name entry field 502 is a text input area for the user to give an arbitrary name to the master shooting information to be distributed. If there is no problem in entering the shooting parameters and the shooting scene name, when the start button 503 is pressed, the UI unit 201 can be instructed to start the master shooting information distribution process.

  Referring to FIGS. 2 and 4 again, the distribution control unit 204 sends the current shooting parameters and shooting equipment information (the model of the imaging device, the model of the attached lens, and the like) from the imaging device 102 via the remote control unit 205. An external light source model such as a strobe is acquired (step S403). Here, the shooting parameters are a shutter speed, an aperture value, an ISO value, a color conversion matrix, and the like. Then, the distribution control unit 204 stores the acquired shooting parameters in the shooting parameter storage unit 202 and also stores the shooting device information in the shooting device information storage unit 207.

  Next, the distribution control unit 204 instructs the imaging apparatus 102 to perform remote shooting via the remote control unit 205. The imaging device 102 photographs the color chart 104 installed in advance (step S404). Image data obtained as a result of imaging by the imaging apparatus 102 is acquired by the remote control unit 205 and stored in the captured image storage unit 203 (step S405).

  Subsequently, the distribution control unit 204 acquires stored information from the imaging parameter storage unit 202, the captured image storage unit 203, and the imaging equipment information storage unit 207, and creates master imaging information. Then, the information is distributed to the individual studios 110 and 120 via the inter-studio communication control unit 206 (step S406), and the master photographing distribution information processing is finished.

  Next, an operation at the time of performing adjustment shooting in each individual studio shown in FIG. 1 will be described. Here, execution of adjustment shooting in the individual studio 110 will be described, but adjustment shooting is also executed in the individual studio 120 in the same manner.

  FIG. 6 is a flowchart for explaining the adjustment shooting process performed in the individual studio shown in FIG.

  3 and 6, in the individual studio 110, when the master shooting information is distributed, the inter-studio communication control unit 314 acquires the master shooting information. Then, the inter-studio communication control unit 314 holds the shooting parameters in the master shooting information in the master shooting parameter storage unit 312 (step S601). Further, the inter-studio communication control unit 314 holds the photographic equipment information among the master photographic information in the master photographic equipment information storage unit 323.

  Subsequently, the inter-studio communication control unit 314 holds the color chart photographed image data in the master photographing information in the master chart image storage unit 313 (Step S602).

  Next, in the individual studio 110, the staff instructs the start of the adjustment shooting process from the UI unit 319 (step S603). The staff does not need to have specialized knowledge regarding photography. Here, the staff places the color chart 114 at a predetermined position, and instructs the UI unit 319 to start the adjustment shooting process. When the UI unit 319 is instructed to start the adjusted shooting process, the UI unit 319 requests the adjusted shooting control unit 321 to perform the adjusted shooting process.

  The adjustment shooting control unit 321 uses the same shooting device for the shooting device information of the master studio 100 stored in the master shooting device information storage unit 323 and the shooting device information stored in the shooting device information storage unit 322. The comparison unit 317 is requested to determine whether or not there is (step S604). Note that the photographic equipment information stored in the photographic equipment information storage unit 322 is photographic equipment information collected from the imaging device 112.

  If the photographing equipment is different as a result of the comparison (NO in step S604), the adjustment photographing control unit 321 notifies the warning display control unit 320 to that effect. As a result, the warning display control unit 320 displays a warning for invoking that the photographing equipment is different from that of the master studio by the UI unit 319 (step S605).

  Note that the adjustment shooting control unit 321 requests the shooting parameter control unit 318 to set the initial shooting parameters of the imaging device 112. The shooting parameter control unit 318 acquires the shooting parameter (master shooting parameter) from the master shooting parameter storage unit 312 and sets the shooting parameter in the imaging device 112 via the remote control unit 315.

  As a result of the comparison, if it is determined that the photographing equipment is the same (YES in step S604), the process proceeds to step S606. In addition, after the process of step S605 is performed, a process transfers to step S606.

  The processes in steps S606 to S609 illustrated in FIG. 6 are performed for each adjustment item in the adjustment shooting process. In the illustrated example, the adjustment items include exposure adjustment, contrast adjustment, and color adjustment.

  First, the adjustment shooting control unit 321 instructs the imaging device 112 to perform remote shooting via the remote control unit 315 (step S606). As a result, the color chart 114 is photographed by the imaging device 112, and the remote control unit 315 acquires the photographed image data and stores it in the photographed image storage unit 316.

  Subsequently, the adjustment shooting control unit 321 causes the comparison unit 317 to calculate the adjustment items between the master chart image data held in the master chart image storage unit 313 and the color chart shooting image data held in the shot image storage unit 316. A comparison is requested (step S607).

  In response to the comparison result, the adjustment shooting control unit 321 determines shooting parameters for the next shooting, and requests the shooting parameter control unit 318 to change the shooting parameters of the imaging device 112 (step S608).

  Subsequently, the adjustment shooting control unit 321 determines whether or not a predetermined end condition is satisfied (step S609). If the end condition is not satisfied (NO in step S609), the adjustment shooting control unit 321 returns to the process of step S606.

  On the other hand, when the end condition is satisfied (YES in step S609), that is, when the most appropriate shooting parameter is detected for all the adjustment items, the adjustment shooting control unit 321 ends the adjustment shooting process.

  In this way, the adjustment shooting control unit 321 repeats the processes of steps S606 to S609 to detect the most appropriate shooting parameter for each adjustment item. When the adjustment shooting process is completed, the shooting parameters of the imaging device 112 are stored in the individual studio dedicated shooting parameter storage unit 224.

  Next, processing for each adjustment item in the adjustment shooting control unit 321 illustrated in FIG. 3 will be described.

  FIG. 7 is a flowchart for explaining processing of the adjustment shooting control unit 321 shown in FIG. 3 when the adjustment item is exposure adjustment.

  When the exposure adjustment process is started, the adjustment shooting control unit 321 sets the master shooting parameter as an initial value in the imaging device 112 and checks whether or not the color chart 114 has been shot (step S701: own studio). Not taken). If it has not been shot (YES in step S701), the adjusted shooting control unit 321 executes the first shooting (step S702).

  Subsequently, the adjustment shooting control unit 321 requests the comparison unit 317 to obtain a difference in luminance value between the master chart and the color chart of the own studio shooting for a gray patch with an average luminance (also referred to as a gray portion) (step S703). ). If the shooting has been completed (NO in step S701), the adjustment shooting control unit 321 executes the process of step S703.

  FIG. 8 is a view for explaining proper exposure determination in the exposure adjustment shown in FIG. 8A is a diagram showing color chart image data (master chart image data) taken by the master studio 100 shown in FIG. 1, and FIG. 8B is taken by the individual studio 110 shown in FIG. It is a figure which shows the made color chart image data.

  Here, as the color chart, for example, a color chart having three or more gray levels including a gray patch having an average luminance and covering all hues such as Color Checker of Gretag Macbeth is used.

  The color chart image data 810 and 830 have gray patches 811 and 831, respectively. In the gray patches 811 and 831, the patches D1 to D5 have different gradations, and the patch D1 has the highest luminance. The patch D5 has the lowest luminance. The patch D3 is an average luminance of the luminance of the patch D1 and the luminance of the patch D5, and is not easily affected by the contrast setting. In the illustrated example, since the contrast value is determined after the exposure determination, the patch D3 is used for the exposure determination.

  When requested to compare exposure adjustments from the adjustment shooting control unit 321 shown in FIG. 3, the comparison unit 317 detects the patch D3 from the master chart image data and the color chart image data shot in the own studio.

  Note that a method for detecting a color patch is described in, for example, Japanese Patent Application Laid-Open No. 2007-81680, and the coordinates of the color patch are registered in advance or an arrangement in the same color region is detected by a color value.

  The comparison unit 317 detects luminance values of the color patch D3 of the master chart image data and the color patch D3 of the color chart image data captured by the own studio from the image data, and obtains a difference between these luminance values. The adjustment shooting control unit 321 determines that the exposure-related parameter value at the previous shooting is appropriate when the difference in the brightness value when shooting with the exposure-related parameter changed is larger than the difference at the time of shooting with the previous exposure-related parameter value. It is determined that

  Referring to FIGS. 3 and 7 again, the adjustment shooting control unit 321 obtains a difference from the comparison unit 317 while changing the exposure-related parameter, and determines whether or not the luminance value difference is different as described above. (Step S704). If the difference is not different (NO in step S704), the adjustment shooting control unit 321 ends the exposure adjustment process.

  On the other hand, if the difference is different (YES in S704), that is, if the brightness is different, the adjustment shooting control unit 321 makes exposure-related shooting so that the brightness of the color chart image data of the own studio shooting approaches the brightness of the master chart image data. The parameter is changed by one step (S705). Here, for example, the exposure is increased or decreased by increasing or decreasing the aperture value.

  That is, the adjustment shooting control unit 321 requests the shooting parameter control unit 318 to change the aperture value by one step. As a result, the imaging parameter control unit 318 changes the aperture value of the imaging apparatus 112 via the remote control unit 315.

  After changing the exposure-related shooting parameters as described above, the adjustment shooting control unit 321 performs remote shooting of the color chart 114 again (step S706). Then, the color chart image data obtained as a result of photographing is stored in the photographed image storage unit 316. Thereafter, the adjustment shooting control unit 321 uses the comparison unit 317 again to obtain a difference in luminance value between the master chart image data and the color chart image data of the own studio shooting for the gray of the patch D3.

  As described above, the adjustment shooting control unit 321 determines whether or not the difference in luminance value when shooting is performed while changing the exposure-related parameter is smaller than the difference when shooting is performed with the previous exposure-related parameter value. (Step S707). That is, the adjustment shooting control unit 321 determines whether or not the luminance of the color chart image data of the own studio shooting approaches the luminance of the master chart image data.

  When the luminance value difference is equal to or larger than the previous difference (NO in step S707), the adjustment shooting control unit 321 determines the previous aperture value as the aperture value in the own studio (step S708). On the other hand, when the difference between the brightness values becomes smaller than the previous difference (YES in S707), the adjustment shooting control unit 321 sets the exposure-related shooting parameters so that the color chart image data of the own studio further approaches the brightness of the master chart image data. One stage is changed (step S709). Then, the adjustment shooting control unit 321 returns to step S706 to continue the processing.

  FIG. 9 is a flowchart for explaining processing of the adjustment shooting control unit 321 shown in FIG. 3 when the adjustment item is contrast adjustment.

  With reference to FIGS. 3 and 9, when contrast adjustment is started, the adjustment photographing control unit 321 requests the comparison unit 317 to obtain a difference between the luminance values of each gray patch (step S901).

  When determining an appropriate contrast, the comparison unit 317 first determines the luminance value of each gray patch 811 of the master chart image data 810 shown in FIG. 8A and each gray patch 831 of the color chart image 830 of its own studio. Is acquired from the image data. Then, the comparison unit 317 obtains a difference between these luminance values. Then, the adjustment shooting control unit 321 determines whether or not the contrast value needs to be changed according to the difference between the luminance values of the gray patches.

  For example, it is assumed that the brightness of the patches D1 and D2 of the color chart image data 830 of the own studio is lower and the brightness of the patches D4 and D5 is higher than the master chart image data 810. In this case, in order to bring the captured image data 830 of the own studio close to the master chart image data 810, it is necessary to increase (increase) the contrast value.

  Also, if the difference in the total brightness values of the gray chart colors (gray difference) is obtained and the total brightness value when shooting with different contrast values is larger than when shooting with the previous contrast value, the previous shooting is performed. It can be determined that the contrast value at this time is more appropriate.

  The adjustment shooting control unit 321 requests the shooting parameter control unit 318 to change the aperture value by one step. As a result, the imaging parameter control unit 318 changes the aperture value of the imaging apparatus 112 via the remote control unit 315.

  As described above, the adjustment shooting control unit 321 receives the comparison result from the comparison unit 317 and determines whether or not the contrast needs to be changed (step S902). If it is determined that it is not necessary to change the contrast (NO in step 902), the adjustment shooting control unit 321 ends the contrast adjustment process.

  On the other hand, if it is necessary to change the contrast (YES in S902), the adjustment shooting control unit 321 changes the contrast value by one level (S903). As a result, the color chart image data 830 of the own studio comes closer to the brightness of each gray patch of the gray patch 811 of the master chart image data 810.

  The adjustment shooting control unit 321 requests the shooting parameter control unit 318 to change the contrast value by one step. As a result, the imaging parameter control unit 318 changes the contrast value of the imaging device 112 via the remote control unit 315.

  After changing the contrast value, the adjustment shooting control unit 321 performs remote shooting of the color chart 114 again (step S904). Then, the color chart image data obtained as a result of photographing is stored in the photographed image storage unit 316. After that, the adjustment shooting control unit 321 uses the comparison unit 317 again to obtain a difference between the luminance values in the gray patch for the master chart image data for the gray of the patch D3 and the color chart data for the own studio shooting.

  The adjustment shooting control unit 321 determines whether or not the difference between the sum of the brightness values of the gray patch 811 and the sum of the brightness values of the gray patch 831 is smaller than the previous difference (step S905). That is, the adjustment shooting control unit 321 determines whether or not the luminance of the color chart image data of the own studio shooting approaches the luminance (that is, the exposure amount) of the master chart image data.

  When the total difference in luminance values is equal to or greater than the previous difference (NO in step S905), the adjustment shooting control unit 321 determines the previous contrast value as the contrast value in the own studio (step S906). On the other hand, when the total difference of the luminance values is smaller than the previous difference (YES in step S905), the adjustment shooting control unit 321 changes the contrast value by one level (step S907). As a result, the sum of the brightness values of the color chart image data of the own studio further approaches the sum of the brightness values of the master chart image data. Then, the adjustment shooting control unit 321 returns to step S904 to continue the processing.

  FIG. 10 is a flowchart for explaining processing of the adjustment shooting control unit 321 shown in FIG. 3 when the adjustment item is color adjustment.

  Referring to FIGS. 3 and 10, when the color tone adjustment is started, the adjustment shooting control unit 321 adjusts the white balance using the gray patch of the color chart image data stored in the shooting image storage unit 316. (Step S1001). Note that a method for adjusting the white balance according to the image data is well known, and a description thereof will be omitted.

  When determining an appropriate color, first, the comparison unit 317 displays each color of the color patch 813 of the master chart image data 810 shown in FIG. 8A and the color chart image of the own studio shown in FIG. 8B. The hue / saturation of each color of the color patch 833 of the data 830 is acquired. The comparison unit 317 obtains a difference between hue and saturation (also referred to as color difference) for each color.

  Here, assuming that a value obtained by summing the difference between hue and saturation is a color value deviation amount, the adjustment shooting control unit 321 determines that a color having the largest color value deviation amount is a color to be preferentially adjusted. Then, the adjustment shooting control unit 3210 corrects the “hue” and “color density” of the shooting parameters so as to approach the color value of the master chart image data in order from the color with the largest color value deviation amount. Then, the adjustment shooting control unit 3210 repeats the shooting parameter change and shooting until the color value deviation amount is minimized, and brings the color of the master chart image data 810 closer to the color of the color chart image data 830 of the own studio. .

  In the case where the color conversion matrix can be changed in the imaging device 112, the color conversion matrix may be adjusted before changing the hue / color density. Further, a total value obtained by summing the color value deviation amounts of all colors is held as a color value deviation amount total value, and the adjustment shooting control unit 221 determines a shooting parameter having an appropriate color for the adjustment color. Use.

  After adjusting the white balance, the adjustment shooting control unit 321 requests the comparison unit 317 to calculate a color value shift amount for each color of the color patch 833. Then, the adjustment shooting control unit 321 selects a color having the largest color value shift amount in the color patch as an adjustment color for subsequent adjustment shooting (step S1002). However, the color already used as the adjustment color is excluded.

  Subsequently, the adjustment shooting control unit 321 instructs remote shooting as described above, and the imaging device 112 captures the color chart 114 (step S1003).

  Then, the adjustment shooting control unit 321 compares the total color value shift amount when shooting is performed with the previous shooting parameter by the comparison unit 317 and the total color value shift amount when shooting is performed with the current shooting parameter (Step S31). S1004). The adjustment shooting control unit 321 determines whether or not the current total color value shift amount is smaller than the previous total color value shift amount. If the sum of the current color value misregistration amount is equal to or greater than the sum of the previous color value misregistration amounts (NO in step S1004), the adjustment shooting control unit 321 determines that the previous color density and hue value are related to the current adjustment color. It is determined that the shooting parameter has the most appropriate color (step S1005). Then, the imaging parameter is reset in the imaging device 112.

  Subsequently, the adjustment shooting control unit 321 determines whether or not the color adjustment has been performed for all the color patches (step S1006). That is, the adjustment shooting control unit 321 determines whether or not there is an adjustment color that has not yet been selected. If the color adjustment is not performed for all the color patches (NO in step S1006), the adjustment shooting control unit 321 returns to the process of step S1002 and selects the adjustment color. On the other hand, when the color adjustment is performed for all the color patches (YES in step S1006), the adjustment shooting control unit 321 ends the color adjustment.

  If the total color value deviation amount is smaller than the previous color value deviation amount (YES in step S1004), the adjustment shooting control unit 321 has the current shooting parameters (hue and color intensity). Suppose that it is more suitable than the previous shooting parameters. Then, in order to investigate whether or not there is a more suitable shooting parameter, the adjustment shooting control unit 321 determines whether or not the color value shift amount for the selected adjustment color is smaller than the previous color value shift amount (step) S1007).

  If the color value deviation amount of the adjustment color is equal to or larger than the previous color value deviation amount (NO in S1007), the adjustment shooting control unit 321 performs the adjustment even if the total color value deviation amount is smaller than the previous total. Regarding the color, it is assumed that the proper shooting parameters are the previous shade and color density. Then, the process proceeds to step S1005.

  If the color value deviation amount of the adjustment color is smaller than the previous color value deviation amount (YES in S1007), a more suitable shooting parameter may be found for the selected adjustment color. The total deviation amount is updated and stored (step S1008).

  Next, the adjustment photographing control unit 321 compares the saturation value and the hue value deviation amount in the color value deviation amount, and determines whether or not the saturation value is largely deviated from the hue value (step S1009). . That is, the adjustment shooting control unit 321 determines whether or not the result (difference) obtained by subtracting the hue shift amount from the saturation shift amount is equal to or greater than a predetermined threshold. If the saturation value does not deviate significantly from the hue value (NO in step S1009), that is, if the amount of deviation between the saturation value and the hue value is less than a predetermined threshold, the adjustment shooting control unit 321 The color density is corrected in the direction in which the hue approaches (step S1010).

  On the other hand, if the saturation value is greatly deviated from the hue value (YES in step S1009), that is, if the amount of deviation between the saturation value and the hue value is greater than or equal to a predetermined threshold value, the adjustment shooting control unit 321 Corrects the hue in the direction in which the saturation approaches (step S1011). Then, the adjustment shooting control unit 321 returns to the process of step S1003 and continues the process.

  As described above, it is possible to obtain shooting parameters specialized for shooting scenes customized for shooting environments of individual studios. This shooting parameter is stored in a shooting parameter storage unit 324 dedicated to an individual studio, and is read out as necessary during commercial shooting.

  In the first embodiment described above, a suitable shooting parameter is searched for all the color patches 833 at the time of color adjustment. However, in order to increase accuracy, the following method may be used. Good.

  For example, in step S1002 shown in FIG. 10, the color with the largest color value deviation amount is selected as the adjustment color when performing adjustment shooting, but the color already used as the adjustment color is also selected at this time. Target of selection. In the process in step S1004, the sum of the squares of the color value deviation amount is used without using the total of the color value deviation amounts. In this way, the number of color patches with a prominent color value deviation is reduced and the whole is averaged, so that the adjustment accuracy can be improved.

  In step S1008, the color value deviation amount is obtained for each color of the color patch, and the sum of the squares of the color value deviation amount is stored. In step S1006, it is not determined whether or not adjustment color selection has been performed for all the color patches, but it is determined until the sum of the squares of the color value deviation amounts becomes smaller than a value set as a predetermined threshold value. Alternatively, it may be determined whether or not the color adjustment has been performed a predetermined number of times.

  In this way, in the first embodiment, even if there is no technical staff having specialized knowledge in the shooting studio, the shooting parameters of the imaging device can be easily adjusted for each shooting studio. Therefore, the color tone is unified in a number of shooting studios, and the quality standard can be maintained.

(Second Embodiment)
Next, an example of the shooting setting adjustment system according to the second embodiment of the present invention will be described.

  FIG. 11 is a diagram showing the configuration of an example of the shooting setting adjustment system 1100 according to the second embodiment of the present invention.

  The illustrated shooting setting adjustment system 1100 includes an imaging device 1120, and the imaging device 1120 includes an exposure parameter adjustment device. The shooting setting adjustment system 1100 includes an information processing apparatus 1110 that is a personal computer (PC), and the information processing apparatus 1110 is connected to the imaging apparatus 1120. Furthermore, the shooting setting adjustment system 1100 includes a predetermined color chart 1140 that is a subject to be shot when adjusting shooting parameters, and illumination devices 1130, 1131, and 1132 that illuminate the subject.

  The illustrated imaging apparatus 1120 has a function of transmitting imaging parameters such as a shutter speed, an aperture, an ISO speed, and a color conversion matrix set to the own apparatus and captured image data to the information processing apparatus 1110. Furthermore, the imaging apparatus 1120 has a function of receiving shooting parameters from the information processing apparatus 1110 and setting the shooting parameters as its own shooting parameter, and a function of receiving a remote shooting instruction from the information processing apparatus 1110 and executing shooting. I have.

  The information processing apparatus 1110 has a function of transmitting imaging parameters to the imaging apparatus 1120 and a function of instructing remote imaging. The information processing apparatus 1110 has a function of receiving shooting parameters and image data set in the imaging apparatus 1120.

  FIG. 12 is a diagram for describing a hardware configuration of the imaging device 1120 and the information processing device 1110 illustrated in FIG.

  The information processing apparatus 1110 has a CPU (Central Processing Unit) 1210, and the CPU 1210 controls processing to be described later according to a control program stored in the memory 1240. The memory 1240 is a storage device including, for example, a RAM, a ROM, and a hard disk, and stores various parameters, input image data, and the like in addition to the control program described above.

  A communication unit 1260 transmits and receives data (image data and the like) to and from the imaging device 1120 via a network or a public line. Then, the program, data, and processing result stored in the memory 1240 are input / output from / to the imaging device 1120 by the communication unit 1260.

  The operation unit 1230 includes, for example, a keyboard and a pointing device, and a user (operator) inputs various instructions to the information processing apparatus 1110 through the operation unit 1230. For example, an instruction to input an image, start exposure parameter adjustment, or send imaging parameters as a result of adjusting exposure parameters to the imaging device 1120 is input from the operation unit 1230 to the information processing device 1110.

  The display unit 1250 is a user interface such as a color display device, for example, and displays set values such as an input image and exposure parameters.

  In response to an instruction from the operation unit 1230, the image processing unit 1220 performs predetermined image processing on the display image displayed on the display unit 1250 based on the exposure parameter adjustment result, and displays the image on the display unit 2150.

  The imaging device 1120 includes an imaging device 1251. The imaging device 1251 converts an optical image into an electrical signal (analog signal) and outputs the electrical signal. The analog signal is converted into a digital signal (image signal) by the A / D converter 1261 and is supplied to the image processing unit 1221 and the memory 1241. The image processing unit 1221 performs white balance processing on the output from the A / D converter 1261 or the image data stored in the memory 1241, and performs predetermined pixel interpolation processing and color conversion processing. Further, the image processing unit 1221 performs predetermined arithmetic processing using image data obtained as a result of photographing.

  The imaging device 1120 has a controller 1211, and this controller 1211 controls the operation of the entire imaging device 1120. The controller 1211 is connected to the memory 1241 and the communication unit 1262.

  The memory 1241 is for storing still image data obtained as a result of shooting, and has a sufficient capacity for storing a predetermined number of still image data. Further, even during continuous shooting for continuously obtaining a plurality of still image data, a large amount of image writing can be performed on the memory 1241 at high speed. The memory 1241 is also used as a work area for the controller 1211. As described above, the output of the A / D converter 1261 is written into the memory 1241 via the image processing unit 1221 or directly.

  The communication unit 1262 has various communication functions such as RS232C, USB, IEEE1394, P1284, SCSI, modem, LAN, or wireless communication, and connects the imaging device 1120 to another device, for example, the information processing device 1110. The communication unit 1262 allows the imaging device 1120 to transfer the image data and the setting values of the imaging parameters to the information processing device 1110 or a peripheral device (not shown) such as a printer.

  FIG. 13 is a flowchart for explaining advance preparation for exposure parameter adjustment in the photographing setting adjustment system 1100 shown in FIG.

  When adjusting the exposure parameters, the operator installs a color chart (not shown) including a predetermined gray at a predetermined position in advance (step S1310). Then, the operator connects the imaging device 1120 and the information processing device 1110 (step S1320), and the preparation is completed.

  FIG. 14 is a flowchart for explaining the operation when the imaging apparatus 1120 shown in FIG. 12 receives a shooting instruction. FIG. 15 is a flowchart for explaining the operation when the imaging apparatus 1120 shown in FIG. 14 and 15 is executed by the controller 1211 in accordance with a program stored in the memory 1241.

  Referring to FIGS. 12 and 14, when power of imaging apparatus 1120 is turned on, controller 1211 initializes flags, control variables, and the like. When the information processing apparatus 1110 notifies the controller 1211 of a shooting instruction to be described later via 1262 (step S1410), the controller 1211 drives the focusing lens of the shooting lens based on the distance data to focus on the subject. Match.

  Further, the controller 1211 opens the shutter (not shown) according to the photometric data and exposes the image sensor 1251 (step S1420). The controller 1211 waits for the image sensor 1251 to finish exposure, and reads out a charge signal (electric signal) from the image sensor 1251. This electric signal is given to the image processing unit 1221 via the A / D converter 1261. The image processing unit 1221 performs digital exposure correction, white balance correction, color processing, and the like on the digital signal (image signal). Image data. The image data is written in the memory 1241 (step S1430). The controller 1211 transmits the image data stored in the memory 1241 to the information processing apparatus 1110 via the communication unit 1262 (step S1450).

  Subsequently, with reference to FIGS. 12 and 15, the controller 1211 receives imaging parameters from the information processing apparatus 1110 via the communication unit 1262 (step S <b> 1510). Upon receiving the shooting parameter, the controller 1211 updates the shooting parameter held in the memory 1241 with the received shooting parameter (step S1520).

  FIG. 16 is a diagram showing an example of a GUI (graphic user interface) screen displayed on the display unit 1250 of the information processing apparatus 1110 shown in FIG.

  12 and 16, when information processing apparatus 1110 is connected to imaging apparatus 1120, CPU 1210 detects that imaging apparatus 1120 is connected, and activates a predetermined program. The CPU 1210 displays an operation screen (GUI screen) 1600 shown in FIG. On the operation screen 1600, an image display area 1610 (color space plane) and an exposure parameter control area 1601 are displayed. In the example shown in FIG. 16, the exposure parameter control area 1601 displays an adjustment target 1620, a shooting parameter name 1630, a parameter value 1640 at the time of shooting, and a parameter value 1650 after the exposure adjustment for each exposure parameter. An exposure adjustment position designation button 1660 is also displayed.

  Further, a shooting instruction button 1680 and a shooting parameter transmission button 1670 are displayed on the operation screen 1600. These shooting instruction button 1680 and shooting parameter transmission button 1670 can be pressed only when the information processing apparatus 1110 is connected to the imaging apparatus 1120. Then, it is depressed when image data is received from the imaging device 1120 by remote operation and when imaging parameters are transmitted to the imaging device 1120.

  FIG. 17 is a flowchart for explaining processing when the information processing apparatus 1110 shown in FIG. 12 receives a shooting instruction from an operator.

  Referring to FIGS. 12 and 17, when the operator depresses shooting instruction button 1680 shown in FIG. 16, CPU 1210 transmits a shooting instruction to imaging apparatus 1120 via communication unit 1260 (step S <b> 1710). Then, as described above, the image data is received from the imaging device 1120 (step S1720).

  When receiving the image data, the CPU 1210 displays an image related to the image data on the display unit 1250 (step S1730). Further, the CPU 1210 extracts exposure parameters from the shooting parameters included in the received image data, and displays the exposure parameters in the column of the parameter value 1640 at the time of shooting shown in FIG. 16 (step S1740).

  When adjusting the exposure parameter, if the setting value of the exposure parameter is not appropriate among the shooting parameters in the imaging apparatus 1120, the adjustment is performed by arbitrarily specifying the exposure parameter to be adjusted.

  First, the operator checks the check box 1621 of the adjustment target 1620 shown in FIG. Thereby, the exposure parameter to be adjusted is determined (step S1750). Then, the operator specifies the adjustment weight in the text input field 1622 of the adjustment target 1620 for the checked exposure parameter (step S1760), and the adjustment of the exposure parameter is completed.

  Here, the weighting refers to designating a change amount ratio for each exposure parameter used for exposure adjustment. In the example shown in FIG. 16, the aperture and the ISO speed are adjusted as exposure parameters, and the aperture weight is “2” and the ISO speed is “1”.

  Note that an operator may perform arbitrary adjustment target parameters and weighting before exposure adjustment, or a standard adjustment target parameter and its weighting may be prepared in advance in a shooting studio.

  FIG. 18 is a flowchart for explaining processing when the exposure adjustment position is designated in information processing apparatus 1110 shown in FIG.

  Referring to FIGS. 12 and 18, after the designation (setting) is completed as described above, when the operator depresses exposure adjustment position designation button 1660, CPU 1210 enters a mode for designating the exposure adjustment position. Then, the operator uses the pointing device of the operation unit 1230 to designate a portion where a predetermined gray is photographed in the image display area 1610 shown in FIG. 16 (step S1810: exposure adjustment position designation).

  If the predetermined gray position is known by the photographing method, the position designation by the operator can be omitted.

  In response to the above gray designation, the CPU 1210 obtains an average luminance value of pixels around the designated position (pixels in a predetermined area) (step S1820). Subsequently, the CPU 1210 performs exposure determination based on the average luminance value, and obtains the number of exposure adjustment steps from the difference between the luminance at the exposure and the luminance at the appropriate exposure (predetermined exposure) (step S1830).

  Next, the CPU 1210 determines whether exposure adjustment is possible (step S1840). That is, the CPU 1210 determines whether or not the number of exposure adjustment steps exceeds the adjustable range. If the number of exposure adjustment steps exceeds the adjustable range (NO in step S1840), CPU 1210 displays that exposure adjustment is impossible (step S1850) and ends the process.

  On the other hand, if the exposure adjustment step number is within the adjustable range (YES in S1840), CPU 1210 allocates the exposure adjustment step number for each exposure parameter to be adjusted in accordance with the exposure parameter adjustment weighting to determine the exposure change step number. (Step S1860). The number of exposure adjustment steps and the weight of exposure adjustment will be described later.

  Subsequently, the CPU 1210 displays the changed exposure parameter value in the parameter value 1650 after exposure adjustment in the exposure parameter control area 1601 shown in FIG. 16 (step S1870). Further, the CPU 1210 performs digital exposure correction on the display image displayed in the image display area 1610 shown in FIG. 16 according to the determined exposure adjustment step number (exposure change step number) and redisplays it (step S1880), and ends the process. To do.

  FIG. 19 is a flowchart for explaining processing when exposure parameters are individually input in the information processing apparatus 1110 shown in FIG.

  As described above, when the display image is redisplayed and the operator determines that the exposure is not appropriate, the exposure parameter value 1650 in the exposure parameter control area 1601 shown in FIG. Manually input (step S1910). In accordance with the input exposure parameter value, the CPU 1210 digitally corrects the display image in the image display area 1610 and redisplays it (step S1920), and ends the process.

  When the operator depresses an imaging parameter transmission button 1670 shown in FIG. 16, the CPU 1210 transmits each adjusted exposure parameter value to the imaging device 1120 as an imaging parameter.

  FIG. 20 is a diagram for explaining the number of exposure adjustment steps and the weighting in the exposure determination described with reference to FIG. FIG. 20A is a diagram showing a table used when obtaining the exposure adjustment amount according to the average luminance value in specifying the exposure adjustment position. FIG. 20B shows the number of exposure adjustment steps from the exposure adjustment amount. It is a figure which shows the table | surface used when calculating | requiring. FIG. 20C is a diagram showing a table used when obtaining the aperture change amount from the exposure adjustment amount, and FIG. 20D is a table used when obtaining the ISO speed change amount from the exposure adjustment amount. FIG.

  Referring to FIG. 20, it is generally known that when a gray having a reflectance of 18% is photographed with an appropriate exposure, the luminance value of the photographed image becomes a value in the vicinity of 128 which is an intermediate value between 0 and 256. Here, for example, a gray value having a reflectance of 18% is set as a predetermined gray value, and a luminance value of an image obtained when the predetermined gray image is captured with appropriate exposure is set as a luminance value with proper exposure.

  In addition, the brightness value measured by photographing a total of 13 times for ± 2 steps with an exposure width of 1/3 step that can be set by the imaging device 1120 was set as the brightness value in the exposure setting. Then, an upper limit and a lower limit luminance value are determined between adjacent measured luminance values, and an exposure adjustment amount (also simply referred to as an adjustment amount) shown in FIG.

  From FIG. 20A, when the luminance values of the pixels around the designated position are “114” to “130”, the adjustment amount is “0”. That is, proper exposure. Similarly, when the luminance value is “69” to “83”, the adjustment amount is 3 (+1 stage).

  In the example shown in FIG. 20A, the unit is set to 1/3 step in accordance with the exposure setting unit of a general imaging apparatus. However, the exposure setting may be performed in units of 1/2 step or 1/9 step. In an image pickup apparatus that can be used, a table similar to that shown in FIG.

  In addition, in the case of the lighting devices 1130, 1131, and 1132, shown in FIG. 11, there are lighting devices that can be adjusted in units of 0.1 stage. Can be applied.

  Furthermore, in the above example, the actual value of the luminance value at each exposure setting is used. However, an approximate curve is obtained by the least square method based on the actual measurement value, and the center of the luminance value at each exposure setting is obtained by this approximate curve. It may be.

  When obtaining the number of exposure correction steps from the exposure adjustment amount, for example, when the average luminance value of the pixels around the specified position is “70”, the exposure adjustment amount is “3” from FIG. . In FIG. 20B, the INDEX of the appropriate exposure (exposure correction = 0) is “7”. Therefore, in FIG. 20B, the exposure correction step number = + 1 in the INDEX 10 indicated by “7 + 3 = 10” is obtained. This is the number of correction steps. When digital exposure correction is performed on the image displayed in the image display area 1610 shown in FIG. 16 according to the number of exposure adjustment steps (also referred to as the number of exposure correction steps), an image captured with appropriate exposure is displayed in a simulated manner.

  When obtaining the aperture change amount from the exposure adjustment amount, for example, when the average luminance value of the pixels around the specified position is “70”, as in the case of obtaining the exposure adjustment step number (that is, the exposure correction amount). From FIG. 20A, the exposure adjustment amount is “3”.

  For example, in step S1760 shown in FIG. 18, it is assumed that the weighting of the adjustment target exposure parameter in the exposure parameter control area 1601 is set to “2” and the ISO speed is set to “1”. In this case, since the exposure adjustment amount “3” is distributed between the aperture and the ISO speed, the aperture adjustment amount is 3 × 2 ÷ (2 + 1) = 2.

  If the aperture setting value at the time of shooting is F11 shown in FIG. 20C, INDEX = 10. Therefore, the aperture adjustment amount “2” is added to INDEX, and the aperture F14 with INDEX = 10 + 2 = 12, as shown in FIG.

  When obtaining the ISO speed change amount from the exposure adjustment amount, the ISO speed change amount is obtained as described with reference to FIG. For example, if the ISO speed at the time of shooting is “400”, the exposure adjustment amount is “3” in FIG. 20A, the weight is “2” for the aperture, and “1” for the ISO speed, FIG. The ISO speed calculated from is 500.

  By the way, when the exposure adjustment amount value cannot be divided by the total value of the exposure parameter weighting settings to be adjusted, fractions are assigned in order from the exposure parameter with the highest weight. For example, if the aperture value F11 at the time of shooting is ISO speed 400, the adjustment target exposure parameter is weighted “2”, ISO speed “1”, and the exposure adjustment amount is “2”, the aperture value is It is adjusted to be the aperture F14, but the ISO speed is 400 without change.

  As described above, it is possible to easily determine the appropriate exposure adjustment step number by preliminarily setting a luminance value of about ± 2 steps of proper exposure and comparing the brightness value of the photographed predetermined gray.

  In this way, according to the second embodiment, even if the light emission amount of the lighting device changes depending on the usage frequency or the like, the exposure adjustment can be easily performed, and the individual adjustment frequency of the multi-lamp illumination that is difficult to adjust can be adjusted. Can be reduced. The operator can easily obtain exposure parameters for obtaining an image with proper exposure while checking the image after exposure adjustment.

  As is clear from the above description, in FIG. 2, the remote control unit 205 and the distribution control unit 204 function as an image acquisition unit and an imaging parameter acquisition unit. Also, the distribution control unit 204 and the inter-studio communication control unit 206 function as photographing information distribution means.

  In FIG. 3, the inter-studio communication control unit 314, the master shooting parameter storage unit 312, the shooting parameter control unit 318, and the remote control unit 315 function as shooting parameter setting means. Further, the adjustment shooting control unit 321, the remote control unit 315, and the shot image storage unit 316 function as a sub image acquisition unit. The comparison unit 317 and the adjustment shooting control unit 321 function as shooting parameter changing means. In addition, the adjustment shooting control unit 321, the warning display control unit 320, and the UI unit 319 function as a warning unit.

  Further, in FIG. 12, the CPU 1210 and the image processing unit 1220 function as display control means, and the CPU 1210 functions as luminance calculation means, exposure adjustment determination means, and parameter adjustment means. The CPU 1210 and the communication unit 1260 function as a transmission unit, and the CPU 1210 and the display unit 1250 function as a warning unit.

  As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to these embodiment, Various forms of the range which does not deviate from the summary of this invention are also contained in this invention. .

  For example, the function of the above embodiment may be used as a control method, and this control method may be executed by the master imaging processing device, the sub imaging processing device, or the information processing device. In addition, a control program having the functions of the above-described embodiments may be executed by a computer included in the master imaging processing device, the sub imaging processing device, or the information processing device.

  At this time, each of the control method and the control program has at least an image acquisition step, an imaging parameter acquisition step, an imaging information distribution step, an imaging parameter setting step, a sub image acquisition step, and an imaging parameter change step. Each of the control method and the control program may include at least a display control step, a luminance calculation step, an exposure adjustment determination step, a parameter adjustment step, and a redisplay control step.

  The control program is recorded on a computer-readable recording medium, for example.

  The present invention is also realized by executing the following processing. That is, software (program) that realizes the functions of the above-described embodiments is supplied to a system or apparatus via a network or various storage media, and a computer (or CPU, MPU, etc.) of the system or apparatus reads the program code. It is a process to be executed. In this case, the program and the storage medium storing the program constitute the present invention.

DESCRIPTION OF SYMBOLS 100 Master studio 102,112,122 Image pick-up device 103,111,121 Information processing apparatus 104,114,124 Color chart 110,120 Individual studio 204 Distribution control part 205,315 Remote control part 320 Warning display control part 321 Adjustment imaging | photography control part

Claims (17)

A shooting setting adjustment system for connecting a master shooting processing device and at least one sub shooting processing device to adjust shooting settings in the sub shooting processing device in accordance with shooting information obtained by the master shooting processing device. And
The master photographing processing device, an image acquisition means for obtaining a master chart image data by photographing a predetermined color chart with a master imaging device provided in the master photographing processing device,
Shooting parameter acquisition means for acquiring a shooting parameter set in the master imaging device and setting it as a master shooting parameter;
Shooting information distribution means for distributing the master chart image data and the master shooting parameters as the shooting information to the sub shooting processing device;
The sub photographing processing device includes:
An imaging parameter setting unit that receives the imaging information and sets the master imaging parameter as an initial sub imaging parameter in a sub imaging device provided in the sub imaging processing device;
Sub-image acquisition means for capturing sub-chart image data by photographing the predetermined color chart with the sub-imaging device;
An imaging setting adjustment system comprising imaging parameter changing means for comparing the master chart image data and the sub-chart image data and changing the sub-imaging parameter according to the comparison result. When the sub imaging parameter is changed by the parameter changing unit, the sub image acquiring unit acquires the sub chart image data,
The shooting parameter changing means compares the gray part of the master chart image data with the gray part of the sub-chart image data and compares the gray part of the master chart image data with the gray part of the sub-chart image data. The photographing setting adjustment system according to claim 1, wherein the sub photographing parameter indicating an exposure amount when it is minimized is determined as a photographing parameter of the sub photographing processing device.   3. The photographing setting adjustment system according to claim 2, wherein the photographing parameter changing unit determines the sub photographing parameter of the contrast that is the exposure amount as a photographing parameter of the sub photographing processing device.   The shooting parameter changing unit compares the hue and saturation of each color between the master chart image data and the sub-chart image data, and for a color having the largest color difference, the color difference is a predetermined threshold value. The imaging setting adjustment system according to any one of claims 1 to 3, wherein the sub-imaging parameter is changed so as to be less.   5. The photographing setting adjustment system according to claim 1, wherein the master photographing parameter includes at least a shutter speed, an aperture value, an ISO value, and a color conversion matrix. The master imaging parameters further include an imaging device model and a lens model of the master imaging device,
The sub photographing processing device includes a warning unit that issues a warning when at least one of an imaging device model and a lens model included in the master photographing parameter is different from the imaging device model and the lens model of the sub imaging device. The imaging setting adjustment system according to claim 5. A control method for adjusting a shooting setting in the sub shooting processing device according to shooting information obtained by the master shooting processing device, wherein a master shooting processing device and at least one sub shooting processing device are connected.
An image acquisition step in which the master imaging processing device captures a predetermined color chart by a master imaging device provided in the master imaging processing device to obtain master chart image data;
A shooting parameter acquisition step for acquiring a shooting parameter set in the master imaging device and setting it as a master shooting parameter;
A shooting information distribution step of distributing the master chart image data and the master shooting parameters as the shooting information to the sub-shooting processing device;
An imaging parameter setting step in which the sub imaging processing device receives the imaging information and sets the master imaging parameter as an initial sub imaging parameter in a sub imaging device included in the sub imaging processing device;
A sub-image acquisition step of obtaining the sub-chart image data by photographing the predetermined color chart with the sub-imaging device;
A control method, comprising: comparing the master chart image data with the sub-chart image data, and performing an imaging parameter changing step of changing the sub-imaging parameter according to the comparison result. A control program for connecting a master imaging processing device and at least one sub imaging processing device and adjusting imaging settings in the sub imaging processing device according to imaging information obtained by the master imaging processing device,
A computer included in the master photographing processing device,
An image acquisition step of obtaining a master chart image data by imaging a predetermined color chart with a master imaging device provided in the master imaging processing device;
A shooting parameter acquisition step for acquiring a shooting parameter set in the master imaging device and setting it as a master shooting parameter;
A shooting information distribution step of distributing the master chart image data and the master shooting parameters as the shooting information to the sub-shooting processing device;
In the computer provided in the sub photographing processing device,
A shooting parameter setting step of receiving the shooting information and setting the master shooting parameter as an initial sub shooting parameter in a sub imaging device provided in the sub shooting processing device;
A sub-image acquisition step of obtaining the sub-chart image data by photographing the predetermined color chart with the sub-imaging device;
A control program that compares the master chart image data with the sub-chart image data and executes an imaging parameter changing step for changing the sub-imaging parameter according to the comparison result. An information processing device for adjusting shooting settings according to shooting information sent from a master shooting processing device,
The shooting information includes master chart image data obtained by imaging a color chart determined in advance by a master imaging device provided in the master imaging processing device, and master shooting parameters that are imaging parameters set in the master imaging device; Is included,
An imaging parameter setting unit that receives the imaging information and sets the master imaging parameter as an initial sub imaging parameter in a sub imaging device;
Image obtaining means for obtaining subchart image data by photographing the predetermined color chart with the sub-imaging device;
An information processing apparatus, comprising: an imaging parameter changing unit that compares the master chart image data and the sub-chart image data and changes the sub-imaging parameter according to the comparison result. A control method used in an information processing device for adjusting shooting settings according to shooting information sent from a master shooting processing device,
The shooting information includes master chart image data obtained by imaging a color chart determined in advance by a master imaging device provided in the master imaging processing device, and master shooting parameters that are imaging parameters set in the master imaging device; Is included,
A shooting parameter setting step for receiving the shooting information and setting the master shooting parameter as an initial sub shooting parameter in a sub imaging device;
An image acquisition step of obtaining the subchart image data by photographing the predetermined color chart with the sub-imaging device;
A control method comprising: a shooting parameter changing step of comparing the master chart image data and the sub-chart image data and changing the sub-shooting parameter according to the comparison result. A control program used in an information processing device for adjusting shooting settings according to shooting information sent from a master shooting processing device,
In the computer provided in the information processing apparatus,
The photographing information includes a master chart image data obtained by photographing a predetermined color chart with a master imaging device provided in the master photographing processing device, and a master photographing parameter which is a photographing parameter set in the master imaging device. Is included,
A shooting parameter setting step for receiving the shooting information and setting the master shooting parameter as an initial sub shooting parameter in a sub imaging device;
An image acquisition step of obtaining the subchart image data by photographing the predetermined color chart with the sub-imaging device;
A control program that compares the master chart image data with the sub-chart image data and executes an imaging parameter changing step for changing the sub-imaging parameter according to the comparison result. An information processing apparatus for adjusting an exposure parameter that is a shooting parameter in an imaging device,
A display for displaying a captured image as a result of capturing a color chart including a predetermined gray image captured by the imaging device on the display unit, and displaying an exposure parameter used for obtaining the captured image on the display unit. Control means;
When the adjustment of the exposure parameter is specified and an exposure adjustment position in the captured image is specified, a luminance calculation unit that calculates an average luminance in a predetermined area centered on the exposure adjustment position;
Exposure adjustment determining means for determining an exposure correction amount according to a difference between the average luminance and the luminance at a predetermined exposure;
Parameter adjusting means for adjusting the exposure parameter according to the exposure correction amount;
The information processing apparatus, wherein the display control unit corrects the captured image in accordance with an adjusted exposure parameter and redisplays the image on the display unit.   The information processing apparatus according to claim 12, wherein the parameter adjustment unit allocates the exposure correction amount according to a weight specified in advance for each of the exposure parameters for which adjustment is specified.   The information processing apparatus according to claim 12, further comprising a transmission unit configured to transmit the exposure parameter adjusted by the parameter adjustment unit to the imaging apparatus.   The information processing apparatus according to claim 12, further comprising a warning unit that issues a warning when the difference exceeds a range adjustable by the imaging apparatus. A control method used in an information processing apparatus for adjusting an exposure parameter, which is a shooting parameter in an imaging device,
A display for displaying a captured image as a result of capturing a color chart including a predetermined gray image captured by the imaging device on the display unit, and displaying an exposure parameter used for obtaining the captured image on the display unit. Control steps;
When the adjustment of the exposure parameter is specified and an exposure adjustment position in the captured image is specified, a luminance calculation step of calculating an average luminance in a predetermined area centered on the exposure adjustment position;
An exposure adjustment determination step of determining an exposure correction amount according to a difference between the average luminance and the luminance at a predetermined exposure;
A parameter adjustment step of adjusting the exposure parameter according to the exposure correction amount;
And a re-display control step of correcting the photographed image in accordance with the adjusted exposure parameter and re-displaying the image on the display unit. A control program used in an information processing device for adjusting an exposure parameter that is a shooting parameter in an imaging device,
In the computer provided in the information processing apparatus,
A display for displaying a captured image as a result of capturing a color chart including a predetermined gray image captured by the imaging device on the display unit, and displaying an exposure parameter used for obtaining the captured image on the display unit. Control steps;
When the adjustment of the exposure parameter is specified and an exposure adjustment position in the captured image is specified, a luminance calculation step of calculating an average luminance in a predetermined area centered on the exposure adjustment position;
An exposure adjustment determination step of determining an exposure correction amount according to a difference between the average luminance and the luminance at a predetermined exposure;
A parameter adjustment step of adjusting the exposure parameter according to the exposure correction amount;
A control program for executing a redisplay control step of correcting the photographed image in accordance with an adjusted exposure parameter and redisplaying the image on the display unit.