Video signal adjustment method, video system, and program

Abstract

When a specific adjustment item is adjusted, it is possible to intuitively recognize how the color characteristics of a video have changed by the adjustment. This video signal adjustment method is provided with: a step for displaying an adjustment GUI (200) having an adjustment unit for adjusting color information of a video and a graph display unit (202) for displaying the state of color elements of the video as a graph; a step for operating the adjustment GUI (200) to adjust the color information; a step for changing the display state of a portion corresponding to a color element, the state of which is changed by adjusting the color information, in the chart displayed on the chart display unit (202) when an operation is performed on the adjustment unit; and a step for correcting the video signal in accordance with the adjusted color information.

Description

Technical Field

[0001] The present disclosure relates to an image signal adjustment method for adjusting an image signal constituting an image, an image system, and a program for causing a computer to execute the image signal adjustment method. Background Art

[0002] In a device that outputs an image signal constituting an image acquired by an image sensor or the like to the outside, the following processing is performed: the color of the image acquired by the image sensor or the like is adjusted, and the image signal (a signal representing the color of the image) is corrected according to the adjustment and output to the outside. By adjusting the color of the image, for example, an operation such as making a specific color stand out in the image can be performed. In recent years, the color of an image has been adjusted using a GUI (Graphical User Interface). For example, it is known to adjust the chromaticity of an image printed by a printer on a GUI that displays a graph representing characteristics of chromaticity (for example, refer to Patent Document 1).

[0003] An existing GUI for adjusting the color of an image only has a GUI called a "slider" provided for each adjustment item by color. A slider is a GUI for adjusting the value of a corresponding adjustment item by moving a grab block in the length direction of the slider. In the existing GUI, when adjusting a specific color using the slider, it is difficult to intuitively recognize how the color characteristics of the entire image change.

[0004] Prior Art Documents

[0005] Patent Documents

[0006] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2006-157162 Summary of the Invention

[0007] -Problems to be Solved by the Invention-

[0008] An object of the present disclosure is to enable intuitive recognition of how the color characteristics of an image change through an adjustment when adjusting a specific adjustment item in a GUI for adjusting the color of an image.

[0009] -Means for Solving the Problems-

[0010] The image signal adjustment method of the present disclosure is a method for adjusting an image signal constituting an image. The image signal adjustment method includes the following steps.

[0011] ◎ A step of displaying an adjustment GUI. The adjustment GUI has an adjustment unit for adjusting color information related to the color of the image, and a graph display unit for displaying the states of a plurality of color elements that can constitute the image as a graph.

[0012] ◎Steps of operating the adjustment GUI to adjust color information.

[0013] ◎Steps of changing the display state of the part corresponding to the color element whose state changes by adjusting the color information among the charts displayed on the chart display part when an operation on the adjustment part is performed.

[0014] ◎Steps of correcting the video signal according to the adjusted color information.

[0015] The video system of the present disclosure is a system for adjusting the video signal constituting a video. The video system includes a display device, an input device, and an image processing device. The display device displays an adjustment GUI. The adjustment GUI has: an adjustment part for adjusting color information related to the color of the video; and a chart display part for displaying the states of a plurality of color elements that can constitute a video as charts. The input device accepts an adjustment operation of the color information for the adjustment GUI. The image processing device corrects the video signal according to the color information adjusted using the input device. In this video system, when an operation on the adjustment part is performed, the display state of the part corresponding to the color element whose state changes by adjusting the color information among the charts displayed on the chart display part is changed according to the operation of the adjustment part.

[0016] -Advantages of the Invention-

[0017] In the video signal adjustment method and video system of the present disclosure, in the adjustment GUI for adjusting color information related to the color of a video, in addition to the adjustment part for adjusting color information, a chart display part for displaying the states of a plurality of color elements that can constitute a video as charts is provided. When an adjustment operation of color information implemented by the adjustment part is performed in this adjustment GUI, the display state of the part corresponding to the color element whose state changes by adjusting the color information among the charts displayed on the chart display part is changed according to the operation of the adjustment part. In the present disclosure, when the color information is adjusted by the operation of the adjustment part, accordingly, the display state of the chart changes, so it is possible to visually and intuitively recognize how the characteristics of the color of the video (that is, the states of the color elements that can constitute the video) change by the adjustment of the color information implemented by the operation of the adjustment part. Description of the Drawings

[0018] Figure 1 It is a diagram showing the structure of the video system.

[0019] Figure 2 It is a diagram showing the structure of the image acquisition device.

[0020] Figure 3 This is a diagram showing the flow of the video signal in the image processing unit.

[0021] Figure 4 This is a diagram showing an example of the structure of the adjustment GUI when adjusting hue and / or chroma.

[0022] Figure 5 This is a diagram showing another example of the structure of the adjustment GUI when adjusting hue and / or chroma.

[0023] Figure 6 This is a diagram showing an example of the adjustment GUI when adjusting the degree of correction of the color of an image.

[0024] Figure 7 This is a diagram showing another example of the adjustment GUI when adjusting the degree of correction of the color of an image.

[0025] Figure 8 This is a flowchart showing the video signal adjustment operation.

[0026] Figure 9 This is a diagram showing an example of the display state of the graph changed by the operation of the third adjustment unit.

[0027] Figure 10 This is a diagram showing an example of the display state of the graph changed by the operations of the first adjustment unit and the second adjustment unit. DETAILED DESCRIPTION

[0028] Hereinafter, the embodiments will be described in detail with appropriate reference to the drawings. However, sometimes the description that is overly detailed will be omitted. For example, sometimes the detailed description of known matters and the repeated description of substantially the same structures will be omitted. This is to avoid making the following description unnecessarily long and to make it easy for those skilled in the art to understand. In addition, the inventors have provided the drawings and the following description to enable those skilled in the art to fully understand the present disclosure, and do not intend to limit the subject matter described in the claims thereby.

[0029] [1. Image System]

[0030] Hereinafter, the image system 100 of the present disclosure will be described with reference to the drawings. The image system 100 is a system that acquires a given image, adjusts the acquired image, and outputs the image. Use Figure 1 to describe the structure of the image system 100. Figure 1 This is a diagram showing the structure of the image system 100. The image system 100 includes an image acquisition device 1, an image display device 3, and an adjustment device 5.

[0031] The image acquisition device 1 acquires image data (including image and audio data) and outputs it to the image display device 3. The image acquisition device 1 is a camera system, a media server, and in this disclosure, it is a camera. The image data acquired by the image acquisition device 1 can be either still image data or moving image data.

[0032] The image display device 3 is a device that displays the image data input from the image acquisition device 1. The image display device 3 is, for example, a display device such as a liquid crystal display, an organic EL display, a plasma display, a computer, a tablet terminal, a portable terminal, etc. that can display image data. In addition, the image display device 3 may also be able to store the image data input from the image acquisition device 1.

[0033] The adjustment device 5 is a device that performs adjustments related to the image acquired by the image acquisition device 1. The adjustment device 5 has a display device 51 and an input device 53. The display device 51 displays the adjustment GUI 200 provided from the image acquisition device 1. The adjustment GUI 200 is a GUI for performing adjustments related to the image acquired by the image acquisition device 1. The display device 51 is, for example, a display device such as a liquid crystal display, an organic EL display, a plasma display.

[0034] The input device 53 accepts the user's operations on the adjustment GUI 200. The input device 53 is, for example, an input device such as a keyboard, a mouse, a touch panel, a given operation panel, etc. The adjustment device 5 is, for example, a given terminal such as a personal computer, a tablet terminal, etc.

[0035] [2. Image Acquisition Device]

[0036] Use Figure 2 And Figure 3 , the structure of the image acquisition device 1 will be described. Figure 2 is a diagram showing the structure of the image acquisition device 1. Figure 3 is a diagram showing the flow of the image signal in the image processing unit 17. The image acquisition device 1 has: a sensor 11, a pan / tilt unit 13, a microphone 15, an image processing unit 17, and a control unit 19.

[0037] The sensor 11 acquires an image of the external space obtained via the lens 11a and outputs it to the image processing unit 17. The sensor 11 is, for example, an image sensor such as a CMOS or a CCD. The image acquired by the sensor 11 is composed of RGB signals (an example of an image signal). The RGB signals are signals that determine the color of each point of the pixels constituting the image, and include an R signal indicating the intensity of red, a G signal indicating the intensity of green, and a B signal indicating the intensity of blue. The lens 11a moves based on a control signal sent from the control unit 19. That is, the focal position and the zoom position of the lens 11a can be adjusted by the control of the control unit 19.

[0038] The pan-tilt unit 13 adjusts the orientation (pan and tilt) of the camera part constituted by the sensor 11 and the lens 11a under the control of the control unit 19. The pan-tilt unit 13 changes the orientation of the camera part, for example, by driving a servo motor.

[0039] The microphone 15 acquires the sound of the external space of the object for which the image is acquired as sound data. The sound data acquired by the microphone 15 is output to the control unit 19. The control unit 19 outputs the image acquired by the sensor 11 and the sound data acquired by the microphone 15 to the outside as image data.

[0040] The image processing unit 17 is an Image Signal Processor (ISP) that performs given image processing on the image acquired by the sensor 11. The image processing unit 17 mainly includes: a white balance adjustment unit 171, a linear matrix unit 173, a signal conversion unit 175, and a color correction unit 177.

[0041] The white balance adjustment unit 171 is a circuit for adjusting the color temperature of the image acquired by the sensor 11 and correcting the RGB signals constituting the image acquired by the sensor 11 according to the adjusted color temperature.

[0042] The linear matrix unit 173 is a circuit for further correcting the RGB signals output from the white balance adjustment unit 171. Specifically, the linear matrix unit 173 performs given matrix operations on the RGB signals from the white balance adjustment unit 171 to correct the RGB signals. The values of the elements of the matrix used in this matrix operation represent the degree of correction of the RGB signals. By correcting the RGB signals implemented by the linear matrix unit 173, the spectral sensitivity of the sensor 11 (the sensitivity of the sensor 11 for each color) can be adjusted.

[0043] The signal conversion unit 175 converts the RGB signal output from the linear matrix unit 173 into a YCrCb signal. The YCrCb signal is a signal that determines the color of each point constituting an image, and includes a Y signal representing the intensity of luminance, a Cr signal representing the hue and chrominance (color difference) of the color of the red system, and a Cb signal representing the hue and chrominance (color difference) of the color of the blue system. The Cr signal and the Cb signal among the YCrCb signals are called color difference signals. The signal conversion unit 175 generates a YCrCb signal by applying a given matrix operation to the RGB signal from the linear matrix unit 173. The conversion from the RGB signal to the YCrCb signal can also be performed according to an international standard such as ITU-R BT.709.

[0044] The color correction unit 177 performs a given matrix operation on the color difference signals (Cr signal, Cb signal) output from the signal conversion unit 175 to correct the color difference signals. The value of each element of the matrix used in this matrix operation represents the degree of correction of the color difference signal. By correcting the color difference signal implemented by the color correction unit 177, the hue of the image can be adjusted. In order to display an image on the image display device 3, the color difference signal corrected by the color correction unit 177 is sent to the control unit 19. In addition, the Y signal output from the signal conversion unit 175 is not corrected in the color correction unit 177 and is directly sent to the control unit 19.

[0045] The image processing unit 17 may also include a circuit that performs other image processing other than the above. Specifically, in addition to this, the image processing unit 17 may also include a circuit that performs the following corrections: "detail (sharpness)" correction for adjusting the degree of emphasis on the edge of the image, γ correction related to the grayness of the image, knee correction related to the grayness of the high-brightness part of the image, gain correction related to the output from the sensor 11, and the like.

[0046] The control unit 19 controls the image acquisition device 1. The control unit 19 includes a CPU 191, a storage device 193, and an interface 195. The CPU 191 performs information processing related to each function executed by using the control unit 19. Specifically, the control unit 19 controls the image processing unit 17, and the operations of the lens 11a, the pan-tilt unit 13, and the microphone 15.

[0047] In addition, the control unit 19 provides the adjustment GUI 200 to the adjustment device 5 and performs adjustments related to the color of the image using the adjustment device 5. The control unit 19 outputs the adjustment result related to the color set using the adjustment GUI 200 to the image processing unit 17. In addition, the control unit 19 outputs the image signal (YCrCb signal) output from the image processing unit 17 to the image display device 3.

[0048] The storage device 193 is constituted of, for example, a RAM, a ROM, a hard disk, and an SSD. The storage device 193 stores programs executed by the control unit 19, various parameters, etc. The storage device 193 stores the adjustment GUI 200. The adjustment GUI 200 is a user interface for performing adjustments related to the color of the image acquired by the sensor 11. The adjustment GUI 200 is provided to the adjustment device 5 when performing adjustments related to the color of the image. That is, the adjustment related to the color of the image is performed using the adjustment device 5 via the adjustment GUI 200.

[0049] The interface 195 connects the image acquisition device 1 and an external device. The interface 195 is connected to the pan-tilt unit 13 and the microphone 15. In addition, an image display device 3 that displays the image data (image, sound data) acquired by the image acquisition device 1 is connected to the interface 195. The interface 195 is connected to the adjustment device 5 used when performing adjustments related to the color of the image.

[0050] The interface 195 has, for example, a serial communication interface, a network interface, a USB (Universal Serial Bus) interface, an HDMI (registered trademark) (High Definition Multimedia Interface) interface, an SDI (Serial Digital Interface) interface, a GenLockIN interface, an Ethernet (registered trademark) terminal such as a LAN or a WAN, etc.

[0051] The image display device 3 is connected to, for example, an interface that outputs an image signal such as an HDMI (registered trademark) interface and an SDI interface, and a network interface. On the other hand, the adjustment device 5 is connected to an interface for data transmission and reception with, for example, a network interface, a USB interface, and a serial communication interface.

[0052] [3. Adjustment GUI]

[0053] [3-1. Basic Structure of Adjustment GUI]

[0054] Hereinafter, the adjustment GUI 200 will be described in detail. In the adjustment GUI 200, it is possible to perform: adjustment of the hue and / or chroma of the color elements that can constitute an image, and adjustment of the correction degree of the color of the image acquired by the sensor 11. First, use Figure 4 to describe the basic structure of the adjustment GUI 200. Figure 4 is a diagram showing an example of the structure of the adjustment GUI 200 when adjusting the hue and / or chroma.

[0055] The adjustment GUI 200 mainly includes an adjustment unit 201, a graph display unit 202, and a preview unit 203. The adjustment unit 201 is a GUI for adjusting color information related to the color of an image.

[0056] Based on the color information adjusted by the adjustment unit 201, the graph display unit 202 displays the states of multiple color elements that can form an image as a graph. That is, the graph displayed in the graph display unit 202 has a shape that reflects the state based on the color information of the adjustment unit 201. When an operation is performed on the adjustment unit 201, correspondingly, the display state of at least a part of the graph displayed in the graph display unit 202 changes. Specifically, through the operation of the adjustment unit 201, the color information changes, and thus the display state of the graph part corresponding to the color element whose state has changed is changed.

[0057] A first label T1 is set in the graph display unit 202. When an operation is performed on the first label T1, the first label T1 switches whether to set the display state of the adjustment GUI 200 to a display state for adjusting the hue and / or chroma of the color element or to a display state for adjusting the degree of color correction of the image acquired by the sensor 11. Specifically, for example, when "Color Correction" is selected in the first label T1, the display state of the adjustment GUI 200 becomes a display state for adjusting the hue and / or chroma of the color element ( Figure 4 ). On the other hand, when "Linear Matrix" is selected in the first label T1, the display state of the adjustment GUI 200 becomes a display state for adjusting the degree of color correction of the image acquired by the sensor 11 ( Figure 6 ).

[0058] A second label T2 is set in the preview unit 203. The second label T2 can switch between the "Live" mode and the "Setup" mode. In addition, in Figure 4 , the "Setup" mode is selected.

[0059] When "Setup" is selected in the second label T2, in the adjustment GUI 200, the adjustment unit 201 and the graph display unit 202 are displayed. In the preview unit 203, an image reflecting the adjustment result of the color information performed using the adjustment unit 201 is displayed. Thus, it is possible to confirm how the image is actually displayed by adjusting the color information. Areas 203a to 203d are provided in the preview unit 203. In area 203a, the image captured by the camera to be adjusted is displayed largely. When a plurality of cameras that can be adjustment targets are connected to the adjustment device 5, in the other areas 203b to 203d, the images captured by the other cameras that are candidates for adjustment targets are displayed smaller.

[0060] On the other hand, when "Live" is selected in the second label T2, instead of the adjustment unit 201 and the graph display unit 202, an operation GUI for operating the control of the pan-tilt unit 13 and the lens 11a of the image acquisition device 1 is displayed. While operating the operation GUI to confirm the live image acquired by the sensor 11 through the preview unit 203, the user determines the desired composition.

[0061] A third label T3 is provided in the adjustment GUI 200. The third label T3 uses the adjustment GUI 200 to select an object to be adjusted. Specifically, when "Matrix / color correction" is selected in the third label T3, the hue and / or chroma of the color element and the correction degree of the color of the image acquired by the sensor 11 are selected as the adjustment objects. On the other hand, for example, when "Brightness" is selected in the third label T3, a GUI for adjusting the brightness (luminance) of the image is displayed at the positions of the adjustment unit 201 and the graph display unit 202.

[0062] The adjustment GUI 200 also includes an object scene selection unit 204, a scene copy unit 205, and a menu unit 206. The object scene selection unit 204 selects a scene (e.g., a file) reflecting the current adjustment state of the color information, etc. Thus, different adjustment states can be stored for multiple scenes respectively. The scene copy unit 205 copies the adjustment state, etc. in a specific scene to other scenes. The menu unit 206 displays a list of other functions that can be executed by the adjustment GUI 200. The list of other functions is displayed when a given operation (e.g., a mouse click, a touch on the touch panel, etc.) is performed on the menu unit 206.

[0063] [3-2. Adjustment GUI when adjusting hue / chroma]

[0064] Next, use Figure 4To describe the structure of the adjustment GUI 200 when adjusting the hue and / or chroma of the color elements that can form an image. When adjusting the hue and / or chroma of the color elements that can form an image, a first adjustment unit 201a and a second adjustment unit 201b are provided in the adjustment unit 201.

[0065] The first adjustment unit 201a is composed of a plurality of sliders respectively provided for a plurality of color elements (color elements represented by color difference signals) that can form an image. In Figure 4 the example shown, the color elements that can form an image are 12 types: red (R), the middle between red and yellow (R_YE), yellow (YE), the middle between yellow and green (YE_G), green (G), the middle between green and cyan (G_CY), cyan (CY), the middle between cyan and blue (CY_B), blue (B), the middle between blue and magenta (B_MG), magenta (MG), and the middle between magenta and red (MG_R). The number of color elements can be set to any number according to uses and the like. The first adjustment unit 201a adjusts the hue of the corresponding color element by moving the slider of the color element in one direction. The hue that can be adjusted by the slider can be, for example, 255 levels from -127 to +127. In this case, when the grabber is in the center of the slider, the hue is 0. In addition, each of these 12-color color elements can be defined by changing the grayscale of each color of the three elements of R, G, and B. For example, in the case of red (R), R, G, and B can be changed respectively between 255, 0, 64 and 255, 64, 0. In other colors, the grayscales of the elements of R, G, and B are different respectively. For example, the grayscales of R, G, and B of the middle between red and yellow (R_Y) are respectively from 255, 64, 0 to 255, 191, 0. In this way, adjacent color elements can also have the same grayscale in a part of them. In addition, the grayscales of R, G, and B that define the above 12-color color elements are not limited to 256 grayscales, and can also be defined respectively between 0% and 100%.

[0066] The second adjustment unit 201b is composed of a plurality of sliders respectively provided for the 12-color color elements that can form an image. The second adjustment unit 201b adjusts the chroma of the corresponding color element by moving the slider of the color element in one direction. By operating the first adjustment unit 201a and the second adjustment unit 201b, the method of correcting the signal input to the color correction unit 177 of the image processing unit 17 changes.

[0067] When adjusting the hue and / or chroma, in the chart display unit 202, a chart having a plurality of color element frames 202a is displayed. The color element frames 202a are respectively provided corresponding to the 12 color elements that can form an image. As described above, in this embodiment, the number of color elements is 12, so the number of color element frames 202a in the chart display unit 202 is 12.

[0068] In the chart display unit 202, a plurality of color element frames 202a are arranged along the circumference. Specifically, 12 color element frames 202a are arranged at equal intervals along the circumference. In addition, inside the color element frame 202a, a marker 202b that moves according to the operations of the first adjustment unit 201a and the second adjustment unit 201b is displayed. Thus, since the chart display unit 202 has the appearance of a "color palette", it is easy to visually confirm the adjustment state of the color elements.

[0069] The plurality of color element frames 202a arranged along the circumference are respectively colored with the corresponding color elements. For example, if it is the color element of R, the inside of the color element frame 202a is depicted in red. The hue of the color inside the color element frame 202a is changed in the circumferential direction of the circle where the color element frame 202a is arranged, and the chroma is changed in the radial direction of the circle where the color element frame 202a is arranged. Specifically, the more clockwise side of the circle where the color element frame 202a is arranged, the larger the hue of the color, and the farther away from the center of the circle in the radial direction, the larger the chroma of the color.

[0070] In addition, the marker 202b determines its position inside the color element frame 202a according to the hue and chroma of the color element corresponding to the color element frame 202a in which it is arranged.

[0071] Specifically, for example, when using the first adjustment unit 201a to adjust the hue of a certain specific color element to the "+" side, the marker 202b inside the color element frame 202a corresponding to that color element moves clockwise. Thus, the marker 202b moves to the side of the color with a larger hue in the color element frame 202a. On the other hand, when using the first adjustment unit 201a to adjust the hue of a certain specific color element to the "-" side, the marker 202b inside the color element frame 202a corresponding to that color element moves counterclockwise. Thus, the marker 202b moves to the side of the color with a smaller hue in the color element frame 202a.

[0072] In this way, in the chart display unit 202, by using the first adjustment unit 201a to adjust the hue of the color element to the "+" side or the "-" side, it is possible to more intuitively recognize visually how the hue of the color changes.

[0073] In addition, for example, when using the second adjustment unit 201b to adjust the chroma of a specific color element to the "+" side, the marker 202b in the color element frame 202a corresponding to the color element moves in a direction away from the center of the circle. As a result, the marker 202b moves to the side of the color with a larger chroma in the color element frame 202a. On the other hand, when using the second adjustment unit 201b to adjust the chroma of a specific color element to the "-" side, the marker 202b in the color element frame 202a corresponding to the color element moves toward the center of the circle. As a result, the marker 202b moves to the side of the color with a smaller chroma in the color element frame 202a.

[0074] In this way, in the chart display unit 202, by using the second adjustment unit 201b to adjust the hue of the color element to the "+" side or the "-" side, it is possible to more intuitively recognize visually how the chroma of the color changes.

[0075] The display state (position of the marker 202b) of the chart in the chart display unit 202 changes according to the operations of the first adjustment unit 201a and the second adjustment unit 201b. That is, the display state of the chart changes almost simultaneously with the operations of the first adjustment unit 201a and the second adjustment unit 201b. As a result, by the operations of the first adjustment unit 201a and the second adjustment unit 201b, it is possible to immediately confirm after the operation how the states (hue and chroma of each color element) of the plurality of color elements that can form an image change.

[0076] In addition, in Figure 4 In the adjustment GUI 200 shown, it is also possible to change the position of the marker 202b in the color element frame 202a by the operation of the user using the adjustment device 5. Specifically, for example, the position of the marker 202b can be changed by dragging and dropping the marker 202b in the color element frame 202a. As a result, it is possible to perform the adjustment of the first adjustment unit 201a and the second adjustment unit 201b while observing the color in the color element frame 202a. By adjusting the position of the marker 202b by the user in the color element frame 202a, the method of correcting the signal input to the color correction unit 177 of the image processing unit 17 also changes.

[0077] When using the adjustment device 5 to change the position of the marker 202b, correspondingly, the hue and / or chroma of the corresponding color element is changed, and the display state of the first adjustment unit 201a and / or the second adjustment unit 201b also changes. In this way, in Figure 4 In the adjustment GUI 200 shown, by changing the position of the marker 202b, it is possible to change the hue and / or chroma of the corresponding color element, and the state of the first adjustment unit 201a and / or the second adjustment unit 201b can be automatically changed accordingly.

[0078] As another example of the adjustment GUI 200 when adjusting the hue and / or chroma of the color element, as Figure 5 shown, a plurality of color element frames 202c having an isosceles triangle shape may be arranged such that two sides of equal length overlap each other (that is, the color element frames 202c are arranged along the circumference), and a marker 202d is arranged in each color element frame 202c. Figure 5 It is a diagram showing another example of the structure of the adjustment GUI 200 when adjusting the hue and / or chroma.

[0079] [3-3. Adjustment GUI when adjusting the degree of correction of the color of the image]

[0080] Next, use Figure 6 to explain the structure of the adjustment GUI 200 when adjusting the degree of correction of the color of the image acquired by the sensor 11. Figure 6 It is a diagram showing an example of the adjustment GUI 200 when adjusting the degree of correction of the color of the image. When adjusting the degree of correction of the color of the image, a third adjustment unit 201c is provided in the adjustment unit 201. The third adjustment unit 201c is composed of a slider in an amount corresponding to the number of parameters (elements of the matrix) representing the degree of correction of the color of the image. In Figure 6 the example shown, the parameters representing the degree of correction are 12 types: R-G_P, G-B_P, B-R_P, R-B_P, G-R_P, B-G_P, R-G_N, G-B_N, B-R_N, R-B_N, G-R_N, B-G_N. The third adjustment unit 201c adjusts the parameter by moving the slider of the corresponding color element in one direction. By operating the third adjustment unit 201c, the method of correcting the signal input to the linear matrix unit 173 of the image processing unit 17 changes.

[0081] R-G_P is a parameter that multiplies the difference when the difference between the R signal (R in ) and the G signal (G in ) input to the linear matrix unit 173 is positive. R-G_N is a parameter that multiplies the difference when the difference between R in and G in is negative. G-B_P is a parameter that multiplies the difference when the difference between the G signal (G in ) and the B signal (B in ) input to the linear matrix unit 173 is positive. G-B_N is a parameter that multiplies the difference when the difference between G in and B in is negative. B-R_P is a parameter that multiplies the difference when B in and Rin The parameter multiplied by the difference when the difference is positive. B - R_N is the parameter when the difference between B in and R in The parameter multiplied by the difference when the difference is negative.

[0082] R - B_P is the parameter when the difference between R in and B in The parameter multiplied by the difference when the difference is positive. R - B_N is the parameter when the difference between R in and B in The parameter multiplied by the difference when the difference is negative. G - R_P is the parameter when the difference between G in and R in The parameter multiplied by the difference when the difference is positive. G - R_N is the parameter when the difference between G in and R in The parameter multiplied by the difference when the difference is negative. B - G_P is the parameter when the difference between B in and G in The parameter multiplied by the difference when the difference is positive. B - G_N is the parameter when the difference between B in and G in The parameter multiplied by the difference when the difference is negative.

[0083] When adjusting the degree of color correction of the image, in the chart display unit 202, a chart 202e showing the magnitude of the spectral sensitivity of the sensor 11 is displayed. The chart 202e has a hexagon with red (R), yellow (YI), green (G), cyan (CY), blue (B), and magenta (MG) as vertices. When the above parameters are changed by operating the third adjustment unit 201c so that the spectral sensitivity increases, the sides and / or vertices of the chart 202e corresponding to the color with increased spectral sensitivity move in a direction away from the center of the hexagon. On the other hand, when the spectral sensitivity decreases, the sides and / or vertices of the chart 202e corresponding to the color with decreased spectral sensitivity move in the direction of the center of the hexagon. Through the above chart 202e, when adjusting the degree of color correction of the image input from the sensor 11, it is possible to more intuitively recognize visually in which color the spectral sensitivity of the sensor 11 increases.

[0084] As Figure 7 shown, in the adjustment GUI 200, when any of the above parameters is changed by operating the third adjustment unit 201c, it is also possible to show which part of the display state of the chart 202e changes, that is, which color the sensitivity of the sensor 11 changes, by the arrow 202f. In Figure 7In the example shown, when changing the parameters related to R-G_P, the edge connecting red (R) and magenta (MG) (as well as red (R) and magenta (MG)) in the graph 202e moves in the direction of arrow 202f, that is, the sensitivity change of sensor 11 for red (R) and magenta (MG). Additionally, the parameter name of the object changed internally can also be displayed at arrow 202f. Figure 7 It is a diagram showing another example of the adjustment GUI 200 when adjusting the degree of correction of the color of an image.

[0085] The display state of the graph 202e in the graph display unit 202 changes according to the operation of the third adjustment unit 201c. That is, the display state of the graph 202e changes almost simultaneously with the operation of the third adjustment unit 201c. Thus, through the operation of the third adjustment unit 201c, it is possible to immediately confirm how the states of the multiple color elements that can form an image (the spectral sensitivities of sensor 11 for each color) change after this operation.

[0086] [4. Image Signal Adjustment Operation]

[0087] Hereinafter, Figure 8 will be used to explain the adjustment operation of the image signal in the above-mentioned image system 100. Figure 8 It is a flowchart showing the image signal adjustment operation. The image signal is a signal representing the color of the image acquired by the image acquisition device 1. Therefore, in the adjustment operation of the image signal, first, the color information related to the color of the image is adjusted so that the image is displayed in the color combination desired by the user. Specifically, the color information is adjusted as follows.

[0088] First, a user who wants to adjust the color information executes a given program such as a web browser using the adjustment device 5 to access the image acquisition device 1. When the user uses the adjustment device 5 to access the image acquisition device 1, the control unit 19 of the image acquisition device 1 sends the adjustment GUI 200 to the adjustment device 5. The adjustment device 5 that has received the adjustment GUI 200 displays the received adjustment GUI 200 on the display device 51 of the adjustment device 5 (step S1).

[0089] When the adjustment GUI 200 is displayed, the input device 53 of the adjustment device 5 can accept the user's operation on the adjustment GUI 200. When the user's operation on the adjustment GUI 200 can be accepted, the user uses the adjustment device 5 on which the adjustment GUI 200 is displayed to perform the adjustment of the color information. For example, first, the user adjusts the degree of correction of the color of the image output from the sensor 11 (step S2).

[0090] Specifically, first, using the input device 53, an operation (such as a mouse click or a touch on the touch panel) is performed on the part displayed as "Setup" in the second label T2 of the adjustment GUI 200 (when "Setup" is not selected in the second label T2). As a result, the adjustment unit 201 and the chart display unit 202 are displayed. Next, using the input device 53, an operation (such as a mouse click or a touch on the touch panel) is performed on the part displayed as "Linear Matrix" in the first label T1 of the adjustment GUI 200, as Figure 6 shown, causing the adjustment unit 201 of the adjustment GUI 200 to display the third adjustment unit 201c and causing the chart display unit 202 to display the chart 202e. Thereby, it is possible to adjust the degree of correction of the color of the image using the adjustment GUI 200.

[0091] Next, the user uses the input device 53 to operate any one of the sliders of the third adjustment unit 201c. For example, assume that the slider used for the parameter called R-G_P is moved in the "+" direction to increase the parameter value of R-G_P, and the slider used for the parameter called B-G_N is moved in the "+" direction to increase the parameter value of B-G_N.

[0092] As described above, when the third adjustment unit 201c is operated, the control unit 19 of the image acquisition device 1 changes the parameter value according to this operation, and changes the display state of the part corresponding to the color element whose state has changed due to the change of the above parameter value due to the operation of the third adjustment unit 201c (step S3). For example, as described above, when the slider used for the parameter called R-G_P is moved in the "+" direction to increase the parameter value of R-G_P, and the slider used for the parameter called B-G_N is moved in the "+" direction to increase the parameter value of B-G_N, the vertex of the red (R) color in the chart 202e moves away from the center of the hexagon, and the display state of the chart 202e becomes Figure 9 as shown. That is, the sensitivity of the red sensor 11 increases. Figure 9 is a diagram showing an example of the display state of the chart 202e changed by the operation of the third adjustment unit 201c.

[0093] When the parameter value is changed by operating the third adjustment unit 201c, accordingly, the color of the image captured by the camera to be adjusted in the area 203a displayed in the preview unit 203 is changed.

[0094] After adjusting the correction degree of the color of the video signal using the third adjustment unit 201c, with reference to the shape of the graph 202e displayed on the graph display unit 202 and / or the video in the area 203a displayed on the preview unit 203, it is determined whether the display state of the color of the video has become the display state desired by the user (step S4).

[0095] In the case where the display state of the color of the video has become the display state desired by the user (Yes in step S4), the adjustment of the color information is ended, and the video signal adjustment operation proceeds to step S8.

[0096] On the other hand, in the case where the display state of the color of the video has not become the display state desired by the user (No in step S4), further adjustment of the hue and / or chroma of the color elements that can form the color of the video is performed (step S5).

[0097] Specifically, first, using the input device 53, an operation is performed on the part displayed as "ColorCorrection" in the first label T1 of the adjustment GUI 200. As Figure 4 shown, the adjustment unit 201 of the adjustment GUI 200 is made to display the first adjustment unit 201a and the second adjustment unit 201b, and the graph display unit 202 is made to display a graph composed of a color element frame 202a and a marker 202b. Thereby, it is possible to perform adjustment of the hue / chroma of the color elements that can form the color of the video using the adjustment GUI 200.

[0098] Next, the user uses the input device 53 to operate any one of the sliders of the first adjustment unit 201a to adjust the hue of the color element. For example, it is assumed that the slider for adjusting the hue of red (R) in the first adjustment unit 201a is moved in the "+" direction to increase the hue of red, and the slider for adjusting the hue of blue (B) is moved in the "-" direction to decrease the hue of blue.

[0099] In addition, the user uses the input device 53 to operate any one of the sliders of the second adjustment unit 201b to adjust the chroma of the color element. For example, it is assumed that the slider for adjusting the chroma of red (R) in the second adjustment unit 201b is moved in the "+" direction to increase the chroma of red, and the slider for adjusting the chroma of blue (B) is moved in the "-" direction to decrease the chroma of blue.

[0100] As described above, when the first adjustment unit 201a and the second adjustment unit 201b are operated, the control unit 19 of the image acquisition device 1 changes the hue / chroma of the color component according to this operation, and changes the position of the marker 202b within the color component frame 202a corresponding to the color component whose hue / chroma has changed by the operation of the third adjustment unit 201c (step S6). For example, as described above, when the slider for adjusting the hue of red (R) of the first adjustment unit 201a is moved in the "+" direction to increase the hue of red, and the slider for adjusting the chroma of red (R) of the second adjustment unit 201b is moved in the "+" direction to increase the chroma of red, as Figure 10 shown, within the color component frame 202a of red (R), the marker 202b moves clockwise along the circumference and moves in a direction away from the center of the circumference. Figure 10 FIG. is an example of a display state of a graph that has changed by the operations of the first adjustment unit 201a and the second adjustment unit 201b.

[0101] In addition, when the slider for adjusting the hue of blue (B) of the first adjustment unit 201a is moved in the "-" direction to decrease the hue of blue, and the slider for adjusting the chroma of blue (B) of the second adjustment unit 201b is moved in the "-" direction to decrease the chroma of blue, as Figure 10 shown, within the color component frame 202a of blue (B), the marker 202b is moved counterclockwise along the circumference and moves in a direction toward the center of the circumference.

[0102] When the first adjustment unit 201a and / or the second adjustment unit 201b are operated to change the hue and / or chroma, accordingly, the color (hue / chroma of a specific color) of the image captured by the camera to be adjusted, which is displayed in the area 203a of the preview unit 203, is changed.

[0103] After adjusting the hue and / or chroma of the color component using the first adjustment unit 201a and / or the second adjustment unit 201b, refer to the arrangement position of the marker 202b displayed in the graph display unit 202 and / or the image displayed in the area 203a of the preview unit 203 to determine whether the display state of the color of the image has become the display state desired by the user (step S7).

[0104] When the display state of the color of the image becomes the display state desired by the user (Yes in step S7), the adjustment of the color information ends, and the image signal adjustment operation proceeds to step S8. On the other hand, when the display state of the color of the image does not become the display state desired by the user (No in step S7), the adjustment of the color information is restarted from the beginning (that is, returns to step S2).

[0105] After adjusting the color information as described above, the control unit 19 of the image acquisition device 1 gives an instruction to reflect the adjusted color information to the image processing unit 17, so that the image processing unit 17 corrects the image signal (RGB signal, color difference signal) according to the adjusted color information. Specifically, the control unit 19 gives an instruction to the image processing unit 17 to set the linear matrix unit 173 of the image processing unit 17 based on the adjustment value of the parameter indicating the correction degree of the color of the image from the sensor 11. In addition, an instruction is given to set the color correction unit 177 of the image processing unit 17 based on the hue and / or chroma of the color element.

[0106] Thereafter, in step S8, the linear matrix unit 173 corrects the RGB signal input from the sensor 11 according to the parameter indicating the adjusted correction degree, generates a new RGB signal, and outputs it to the signal conversion unit 175. In addition, the color correction unit 177 corrects the color difference signal output from the signal conversion unit 175 according to the hue and chroma of each adjusted color element, generates a new color difference signal, and outputs it to the control unit 19.

[0107] Thus, in the image system 100 of the present disclosure, in the adjustment GUI 200 for adjusting the color information related to the color of the image, in addition to the first adjustment unit 201a to the third adjustment unit 201c for adjusting the color information, a graph display unit 202 that displays the states of the plurality of color elements that can form the image as a graph is provided. When the color information adjustment operation implemented by the first adjustment unit 201a to the third adjustment unit 201c is performed in the adjustment GUI 200, the display state of the part of the graph displayed in the graph display unit 202 corresponding to the color element whose state changes by adjusting the color information is changed according to the operation of the adjustment unit. In the present disclosure, when the color information is adjusted by the operation of the first adjustment unit 201a to the third adjustment unit 201c, accordingly, the display state of the graph changes, so that it is possible to visually and intuitively recognize how the characteristics of the color of the image (that is, the states of the color elements that can form the image) change by the adjustment of the color information implemented by the first adjustment unit 201a to the third adjustment unit 201c.

[0108] As described above, an embodiment of the present disclosure has been described. However, the present disclosure is not limited to the above-described embodiment, and various modifications can be made without departing from the gist thereof.

[0109] In the above-described embodiment, both the adjustment of the correction degree of the color of the image acquired by the sensor 11 (adjustment for the linear matrix unit 173) and the adjustment of the hue / chroma of the color elements that can constitute the color of the image (adjustment for the color correction unit 177) are performed. However, it is not limited thereto, and only the adjustment of the correction degree of the color of the image acquired by the sensor 11 may be performed, or only the adjustment of the hue / chroma (adjustment for the color correction unit 177) may be performed without performing this adjustment.

[0110] In addition, the order of adjustment of the color information is not limited to the case where the hue / chroma of the color elements is adjusted after the correction degree of the color of the image is adjusted. Conversely, the correction degree of the color of the image may be adjusted after the hue / chroma of the color elements is adjusted.

[0111] In the above-described embodiment, the functions of the image processing unit 17 are implemented by all circuits (hardware). However, it is not limited thereto. Part or all of the functions of the image processing unit 17 may be implemented by software.

[0112] [5. Features of the Present Disclosure]

[0113] (1) The image signal adjustment method of the present disclosure includes the following steps.

[0114] ◎ Step of displaying an adjustment GUI (for example, adjustment GUI 200) (for example, step S1). The adjustment GUI has an adjustment unit (for example, first adjustment unit 201a to third adjustment unit 201c) for adjusting color information related to the color of the image, and a graph display unit (for example, graph display unit 202) that displays the states of the plurality of color elements that can constitute the image as a graph.

[0115] ◎ Step of operating the adjustment GUI to adjust the color information (for example, steps S2 and S5).

[0116] ◎ Step of changing the display state of the part corresponding to the color element whose state has changed by adjusting the color information in the graph displayed on the graph display unit when an operation on the adjustment unit is performed (for example, steps S3 and S6).

[0117] ◎ Step of correcting the image signal according to the adjusted color information (for example, step S8).

[0118] In the above-described video signal adjustment method, in an adjustment GUI for adjusting color information related to the color of a video, in addition to an adjustment unit for adjusting the color information, a graph display unit that displays the states of multiple color elements that can form the video as a graph is provided. When an adjustment operation of the color information implemented by the adjustment unit is performed in the adjustment GUI, the display state of the part of the graph displayed in the graph display unit corresponding to the color element whose state changes by adjusting the color information is changed according to the operation of the adjustment unit. In the present disclosure, when the color information is adjusted by the operation of the adjustment unit, accordingly, the display state of the graph changes. Therefore, it is possible to visually and intuitively recognize how the characteristics of the color of the video (i.e., the states of the color elements that can form the video) change by the adjustment of the color information implemented by the operation of the adjustment unit.

[0119] (2) In the video signal adjustment method of the above (1), it may also be that the video signal is an RGB signal. Thereby, correction for the RGB signal can be performed in accordance with the adjustment of the color information.

[0120] (3) In the video signal adjustment method of the above (2), it may also be that the color information is information related to the correction degree of the color of the video acquired by a sensor (e.g., sensor 11). Thereby, the sensitivity of sensor 11 for a specific color can be adjusted.

[0121] (4) In the video signal adjustment method of the above (3), it may also be that the graph display unit displays the magnitudes of the spectral sensitivities of the sensors as a graph (e.g., graph 202e). Thereby, the sensitivity of sensor 11 for each color can be directly recognized visually.

[0122] (5) In the video signal adjustment method of the above (4), it may also be that when the information related to the correction degree of the color of the video is changed by the adjustment unit, which part of the graph is changed in the display state in the graph display unit is displayed. Thereby, it can be directly recognized visually which spectral sensitivity for which color changes when the correction degree of the color of the video is changed by the adjustment unit.

[0123] (6) In the video signal adjustment method of any one of the above (1) to (5), it may also be that the video signal is a color difference signal. Thereby, correction for the color difference signal can be performed in accordance with the adjustment of the color information.

[0124] (7) In the video signal adjustment method of the above (6), it may also be that the color information is the hue and / or chroma of the color elements represented by the color difference signal. Thereby, the color difference signal can be corrected so that the video has a desired hue.

[0125] (8) In the image signal adjustment method of (7) above, it may also be that the chart displayed on the chart display unit has: a plurality of color element frames (for example, color element frame 202a), provided corresponding to the color elements represented by the color difference signal; and marks (for example, mark 202b), arranged within each color element frame, and the arrangement position within the color element frame changes according to the hue and the chroma. Thus, it is possible to directly visually recognize how the display state of the color element of the image changes specifically by changing the hue and / or chroma of the color element by the adjustment unit.

[0126] (9) In the image signal adjustment method of (8) above, it may also be that the arrangement position of the mark in the first direction (for example, the direction along the circumference) of the color element frame is determined based on the hue, and the arrangement position of the mark in the second direction (for example, the radial direction of the circumference) of the color element frame is determined based on the chroma. Thus, it is possible to directly visually recognize whether the hue and / or the chroma have been adjusted by the adjustment unit.

[0127] (10) In the image signal adjustment method of (8) or (9) above, it may also be that the color element frame is colored with the corresponding color element. In this case, in the first direction of the color element frame, the hue of the color is changed, and in the second direction, the chroma of the color is changed. Thus, it is possible to directly visually recognize how each color element of the image is specifically displayed.

[0128] (11) In the image signal adjustment method of any one of (8) to (10) above, it may also be that the position of the mark within the color element frame can be changed by the operation of the user. In this case, when the position of the mark is changed by the operation of the input device, correspondingly, the hue and / or the chroma of the corresponding color element are changed, and the display state of the adjustment unit changes. Thus, it is possible to change the hue and / or the chroma of the color element by changing the position of the mark, and correspondingly, it is possible to automatically change the state of the adjustment unit to a state corresponding to the changed hue and / or chroma.

[0129] (12) In the image signal adjustment method of any one of (8) to (11) above, it may also be that a plurality of color element frames are arranged along the circumference. Thus, since the chart display unit has the appearance of a "color palette", it is easy to intuitively confirm the adjustment state of the color elements.

[0130] (13) The image system of the present disclosure (e.g., image system 100) is a system for adjusting an image signal constituting an image. The image system includes a display device (e.g., display device 51), an input device (e.g., input device 53), and an image processing device (e.g., image processing unit 17). The display device displays an adjustment GUI (e.g., adjustment GUI 200). The adjustment GUI has an adjustment unit (e.g., first adjustment unit 201a to third adjustment unit 201c) for adjusting color information related to the color of the image, and a graph display unit (e.g., graph display unit 202) that displays the states of multiple color elements that can constitute the image as a graph. The input device accepts an adjustment operation of the color information for the adjustment GUI. The image processing device corrects the image signal according to the color information adjusted using the input device.

[0131] In the above image system, when an operation is performed on the adjustment unit, the display state of the part of the graph corresponding to the color element whose state changes due to the adjustment of the color information changes according to the operation of the adjustment unit.

[0132] In the above image system, in the adjustment GUI for adjusting color information related to the color of the image, in addition to the adjustment unit for adjusting the color information, a graph display unit that displays the states of multiple color elements that can constitute the image as a graph is provided. In this adjustment GUI, when an adjustment operation of the color information implemented by the adjustment unit is performed, the display state of the part of the graph displayed on the graph display unit corresponding to the color element whose state changes due to the adjustment of the color information changes according to the operation of the adjustment unit. In the present disclosure, when the color information is adjusted by the operation of the adjustment unit, correspondingly, the display state of the graph changes, so it is possible to visually and intuitively recognize how the characteristics of the color of the image (i.e., the states of the color elements that can constitute the image) change due to the adjustment of the color information implemented by the operation of the adjustment unit.

[0133] (14) The program of the present disclosure is a program for causing a computer to execute the image signal adjustment method according to any one of the above (1) to (12).

[0134] Industrial Applicability

[0135] The present disclosure can be used for an image signal adjustment method and an image system for adjusting an image signal constituting an image.

[0136] - Symbol Explanation -

[0137] 100: Image system

[0138] 1: Image acquisition device

[0139] 11: Sensor

[0140] 11a: Lens

[0141] 13: Pan-tilt unit

[0142] 15: Microphone

[0143] 17: Image processing unit

[0144] 171: White balance adjustment unit

[0145] 173: Linear matrix unit

[0146] 175: Signal conversion unit

[0147] 177: Color correction unit

[0148] 19: Control unit

[0149] 191: CPU

[0150] 193: Storage device

[0151] 195: Interface

[0152] 3: Image display device

[0153] 5: Adjustment device

[0154] 51: Display device

[0155] 53: Input device

[0156] 200: Adjustment GUI

[0157] 201: Adjustment unit

[0158] 201a: First adjustment unit

[0159] 201b: Second adjustment unit

[0160] 201c: Third adjustment unit

[0161] 202: Chart display unit

[0162] 202a, 202c: Color element box

[0163] 202b, 202d: Marker

[0164] 202e: Chart

[0165] 202f: Arrow

[0166] 203: Preview unit

[0167] 203a to 203d: Area

[0168] 204: Object scene selection unit

[0169] 205: Scene copying unit

[0170] 206: Menu unit

[0171] T1: First label

[0172] T2: Second label

[0173] T3: Third label.

Claims

1. A method for adjusting an image signal, for adjusting an image signal constituting an image, comprising: The step of displaying an adjustment GUI, the adjustment GUI comprising: an adjustment unit for adjusting color information related to the color of the image, and a graph display unit for displaying states of each of a plurality of color elements that can constitute the image as a graph; A step of operating the adjustment GUI to adjust the color information; When the adjustment unit is operated, a step of changing the display state of a portion of the graph corresponding to the color element whose state is changed by adjusting the color information according to the operation of the adjustment unit; and The step of correcting the image signal according to the adjusted color information.

2. The image signal adjustment method according to claim 1, in, The image signal is an RGB signal.

3. The image signal adjustment method according to claim 2, in, The color information is information related to the degree of correction of the color of the image acquired by the sensor.

4. The image signal adjustment method according to claim 3, in, The graph display unit displays the magnitude of the spectral sensitivity of the sensor in the form of a graph.

5. The image signal adjustment method according to claim 4, in, When the information on the degree of color correction is changed by the adjustment unit, a display state of which part of the graph is displayed on the graph display unit changes.

6. The image signal adjustment method according to claim 1, in, The image signal is a color difference signal.

7. The image signal adjustment method according to claim 6, in, The color information is the hue and / or chromaticity of the color element represented by the color difference signal.

8. The image signal adjustment method according to claim 7, in, The chart includes: a plurality of color element frames provided corresponding to the color elements represented by the color difference signal; and a mark arranged in each color element frame, wherein the arrangement position in the color element frame changes according to the hue and the chromaticity.

9. The image signal adjustment method according to claim 8, in, The arrangement position of the mark in the first direction of the color element frame is determined based on the hue, and the arrangement position of the mark in the second direction of the color element frame is determined based on the chromaticity.

10. The image signal adjustment method according to claim 8, in, The color element frame is colored with the corresponding color element. The hue of the color is changed in the first direction of the color element frame, and the chromaticity of the color is changed in the second direction.

11. The image signal adjustment method according to claim 8, in, The position of the mark in the color element frame can be changed by a user operation. When the position of the mark is changed by a user operation, the hue and / or chroma of the corresponding color element is changed accordingly, and the display state of the adjustment unit is changed.

12. The image signal adjustment method according to claim 8, in, A plurality of color element frames are arranged along the circumference.

13. An imaging system for adjusting an image signal constituting an image, comprising: a display device for displaying an adjustment GUI, the adjustment GUI having an adjustment unit for adjusting color information related to the color of the image, and a graph display unit for displaying the states of each of a plurality of color elements capable of constituting the image as a graph; an input device for accepting an adjustment operation of the color information with respect to the adjustment GUI; and an image processing device that corrects the image signal according to the color information adjusted using the input device, When the adjustment unit is operated, the display state of a portion of the graph corresponding to the color element whose state is changed by adjusting the color information is changed according to the operation of the adjustment unit.

14. A program for causing a computer to execute the video signal adjustment method according to any one of claims 1 to 12.

Images