CN106898328B - A kind of screen color correction method and device - Google Patents
A kind of screen color correction method and device Download PDFInfo
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Abstract
本发明公开了一种屏幕校色方法及装置，该方法包括以下步骤：1)在屏幕的四角引入调色点；2)调整所述每个调色点的RGB颜色值；3)判断在所述屏幕前方某个位置观看到的屏幕上各个位置的画面显示效果是否一致，即不出现偏色现象；4)如果是，则跳转到步骤5)，否则跳转到步骤2)；5)保存每个调色点的值。通过本发明的技术方案，保证了画面在屏幕上各个位置的显示效果保持一致，得到更好的摄像和观看效果。
The invention discloses a screen color correction method and device. The method includes the following steps: 1) introducing color adjustment points at the four corners of the screen; 2) adjusting the RGB color value of each color adjustment point; 3) judging where the Check whether the picture display effect at each position on the screen viewed from a certain position in front of the screen is consistent, that is, there is no color cast; 4) If yes, jump to step 5), otherwise jump to step 2); 5) Save the value of each color point. Through the technical solution of the present invention, it is ensured that the display effect of the picture at each position on the screen remains consistent, and better imaging and viewing effects are obtained.
Description
技术领域technical field
本发明涉及数据显示技术领域，具体涉及一种屏幕校色方法及装置。The invention relates to the technical field of data display, in particular to a screen color correction method and device.
背景技术Background technique
LED屏幕在节目制作、展示宣传、广告应用中使用非常广泛的应用。但LED屏幕由于自身结构特点，摄像机在固定位置不同视角拍摄时会有色差。现在市面上的LED屏幕的色彩调整都是基于整个屏幕,无法有针对性的解决色差问题。LED screens are widely used in program production, display promotion, and advertising applications. However, due to the structural characteristics of the LED screen, the camera will have chromatic aberration when shooting at a fixed position and different viewing angles. Now the color adjustment of LED screens on the market is based on the entire screen, and it is impossible to solve the problem of color difference in a targeted manner.
LED显示是用细小的三基色(红、绿、蓝)LED灯组合排列来进行显示内容的，所以在不同的观看角度看到的发光灯组会有不同色差显示，如左侧是看到绿灯部分偏多偏绿色，右侧看到的蓝灯部偏多偏蓝色，这对观看和拍摄屏幕效果有极大的不良影响。The LED display uses a combination of small three-color (red, green, blue) LED lights to display content, so the light-emitting light group seen at different viewing angles will have different color difference displays, such as the green light on the left. Some parts are more greenish, and the blue light part seen on the right is more blueish, which has a great adverse effect on the viewing and shooting screen effects.
LED显示是用细小的三基色(红、绿、蓝)LED灯组合排列来进行显示内容的，所以在不同的观看角度看到的发光灯组会有不同色差显示，如左侧是看到绿灯部分偏多偏绿色，右侧看到的蓝灯部偏多偏蓝色，这对观看和拍摄屏幕效果有极大的不良影响。摄像机在拍摄LED屏只能在正对屏幕时才能正常显示颜色和色温，在多块屏拼接时无法保证对每一块屏幕都是正对或者统一的角度拍摄，所以会出现“阴阳”屏的现像，大大破坏LED的显示效果和统一画面表现。The LED display uses a combination of small three-color (red, green, blue) LED lights to display content, so the light-emitting light group seen at different viewing angles will have different color difference displays, such as the green light on the left. Some parts are more greenish, and the blue light part seen on the right is more blueish, which has a great adverse effect on the viewing and shooting screen effects. When shooting the LED screen, the camera can only display the color and color temperature normally when it is facing the screen. When splicing multiple screens, it cannot guarantee that each screen is directly facing or shooting from a uniform angle, so the phenomenon of "yin and yang" screen will appear. , greatly destroy the LED display effect and unified picture performance.
现有的屏幕校色方式是基于整个屏幕的，通过使用软件在屏幕上每个像素上增加RGB值，以校正显示在屏幕上的图片、视频或三维场景的颜色。但是，LED屏幕是用细小的三基色(红、绿、蓝)LED灯组合排列来进行显示内容的，所以在不同的观看角度看到的发光灯组会有不同色差显示。现有的方法，并没有能解决由LED屏幕结构特点所产生的色差问题的方法。The existing screen color correction method is based on the entire screen, by using software to increase the RGB value on each pixel on the screen to correct the color of the picture, video or three-dimensional scene displayed on the screen. However, the LED screen uses a combination of small three-color (red, green, blue) LED lights to display content, so the light-emitting light groups seen at different viewing angles will have different color differences. The existing methods do not have a solution to the problem of color difference caused by the structural characteristics of the LED screen.
发明内容SUMMARY OF THE INVENTION
针对现有的LED屏幕无法解决由其自身结构特点所产生的色差问题，系统就不能基于整面屏幕来进行校色。本发明是要从屏幕中的四个角入手，渐变地校色，这样才能使画面在屏幕上各个位置的显示效果保持一致，不出现偏色现象。达到多屏显示内容在任意角度观看效果统一,为观众的观看和节目拍摄提供了整体一致的画面效果呈现。In view of the fact that the existing LED screen cannot solve the problem of color difference caused by its own structural characteristics, the system cannot perform color correction based on the entire screen. The present invention starts from the four corners of the screen, and calibrates the color gradually, so that the display effect of the picture at each position on the screen can be kept consistent, and no color cast occurs. To achieve the unified viewing effect of multi-screen display content at any angle, it provides an overall consistent picture effect presentation for audience viewing and program shooting.
为解决上述技术问题，本发明提供了一种屏幕校色方法，该方法包括以下步骤：In order to solve the above-mentioned technical problems, the present invention provides a screen color correction method, which comprises the following steps:
1)在屏幕的四角引入调色点；1) Introduce color points at the four corners of the screen;
2)调整所述每个调色点的RGB颜色值；2) Adjust the RGB color value of each color point;
3)判断在所述屏幕前方某个位置观看到的屏幕上各个位置的画面显示效果是否一致，即不出现偏色现象；3) Judging whether the picture display effect of each position on the screen viewed at a certain position in front of the screen is consistent, that is, no color cast occurs;
4)如果是，则跳转到步骤5)，否则跳转到步骤2)；4) If yes, then jump to step 5), otherwise jump to step 2);
5)保存每个调色点的值。5) Save the value of each color point.
优选的，所述调色点的颜色数值和所述屏幕中心点的颜色数据呈拟合变化。Preferably, the color value of the toning point and the color data of the center point of the screen show a fitting change.
优选的，所述步骤3)中通过在所述屏幕前方的某个位置固定摄像机，观看屏幕，判断所述屏幕上各个位置的画面显示效果是否一致。Preferably, in the step 3), by fixing a camera at a certain position in front of the screen, watching the screen, it is judged whether the picture display effect of each position on the screen is consistent.
优选的，通过运行校色软件，调整各个调色点的RGB颜色值。Preferably, the RGB color value of each color point is adjusted by running color correction software.
优选的，所述屏幕左上和左下的两个调色点的RGB值均调整为(1.18,0,1.18)，所述屏幕右上和右下的两个调色点的RGB值均调整为(1.18,1.18，0)。Preferably, the RGB values of the two toning points at the upper left and the lower left of the screen are both adjusted to (1.18, 0, 1.18), and the RGB values of the two toning points at the upper right and lower right of the screen are both adjusted to (1.18 , 1.18, 0).
为解决上述技术问题，本发明提供了一种屏幕校色装置，该装置包括：In order to solve the above-mentioned technical problems, the present invention provides a screen color correction device, which includes:
调色装置，调整屏幕上四个调色点的RGB颜色值；Toning device, adjust the RGB color values of the four toning points on the screen;
偏色判断装置，判断在所述屏幕前方某个位置观看到的屏幕上各个位置的画面显示效果是否一致，即不出现偏色现象；A color cast judgment device, for judging whether the picture display effects of various positions on the screen viewed from a certain position in front of the screen are consistent, that is, no color cast phenomenon occurs;
调色值保持装置，保存调整好的每个调色点的值。The color value holding device saves the adjusted value of each color point.
优选的，所述调色点的颜色数值和所述屏幕中心点的颜色数据呈拟合变化。Preferably, the color value of the toning point and the color data of the center point of the screen show a fitting change.
优选的，所述偏色判断装置为摄像机。Preferably, the color cast judgment device is a camera.
优选的，所述屏幕左上和左下的两个调色点的RGB值均调整为(1.18,0,1.18)，所述屏幕右上和右下的两个调色点的RGB值均调整为(1.18,1.18，0)。Preferably, the RGB values of the two toning points at the upper left and the lower left of the screen are both adjusted to (1.18, 0, 1.18), and the RGB values of the two toning points at the upper right and lower right of the screen are both adjusted to (1.18 , 1.18, 0).
为解决上述技术问题，本发明提供了一种屏幕校色系统，该系统包括：LED显示屏，HDMI连接线，摄像机，计算机；In order to solve the above technical problems, the present invention provides a screen color correction system, which includes: an LED display screen, an HDMI connection cable, a camera, and a computer;
所述HDMI连接线连接所述LED显示屏和所述计算机；the HDMI cable connects the LED display screen and the computer;
所述摄像机位于所述LED显示屏的前方某个位置；The camera is located at a certain position in front of the LED display screen;
所述计算机通过所述HDMI对所述LED显示屏调色；The computer adjusts the color of the LED display screen through the HDMI;
在所述LED显示屏的四角引入调色点；Introduce toning points at the four corners of the LED display screen;
通过所述计算机调整所述每个调色点的RGB颜色值；Adjust the RGB color value of each color point by the computer;
通过所述摄像机观看到所述LED显示屏上各个位置的画面显示效果是否一致，即不出现偏色现象；如果一致则保存每个调色点的值，完成对所述LED屏幕的校色，否则继续通过所述计算机调整所述每个调色点的RGB颜色值。Check whether the picture display effect of each position on the LED display screen is consistent through the camera, that is, there is no color cast phenomenon; if it is consistent, save the value of each color point to complete the color correction of the LED screen, Otherwise, continue to adjust the RGB color value of each toning point by the computer.
为解决上述技术问题，本发明提供了一种计算机存储介质，其包括计算机程序指令，当执行所述计算机程序指令时，执行上述之一的方法。In order to solve the above technical problems, the present invention provides a computer storage medium, which includes computer program instructions, and when the computer program instructions are executed, one of the above methods is performed.
通过本发明的技术方案取得了以下技术效果：The following technical effects have been achieved through the technical scheme of the present invention:
在固定位置不同视角，摄像机拍摄或者观众观看LED显示屏显示的三维空间产生的色差问题。使画面在屏幕上各个位置的显示效果保持一致，得到更好的摄像和观看效果。At different viewing angles at a fixed position, the problem of color difference caused by the camera shooting or the audience watching the three-dimensional space displayed by the LED display. Make the display effect of the picture in each position on the screen consistent, and get better camera and viewing effect.
附图说明Description of drawings
图1是现有本发明系统构成图Fig. 1 is the structure diagram of the existing system of the present invention
图2是本发明的校色流程图Fig. 2 is the color correction flow chart of the present invention
具体实施方式Detailed ways
本屏幕校色的方式，其所需的装置的特征在于：一块LED显示屏幕、一台控制电脑以及校色软件和一台高清摄像机。The characteristics of the device required for this screen color correction method are: an LED display screen, a control computer, color correction software and a high-definition camera.
控制电脑通过一根HDMI线来控制LED屏幕。The control computer controls the LED screen through an HDMI cable.
为了解决LED屏幕结构特点所产生的色差问题，系统在屏幕四角引入调色点，这些调色点可以通过调整RGB颜色值，人为的设置颜色，并且调色点的颜色数值和屏幕中心点的颜色数值呈拟合变化。系统载入图片、视频或者三维场景这些素材并显示在屏幕上后，摄像机固定在不变的位置上观看屏幕，并运行控制电脑中的校色软件，手动调整每个调色点上的RGB颜色值，直至经过最终画面判断，确定画面在屏幕上各个位置的显示效果保持一致，不出现偏色现象。调色过的屏幕就像在原有画面上面叠加了一层调色图层。In order to solve the problem of color difference caused by the structural characteristics of the LED screen, the system introduces color points at the four corners of the screen. These color points can be manually set by adjusting the RGB color value, and the color value of the color point and the color of the center point of the screen The values show a fitting change. After the system loads pictures, videos or 3D scenes and displays them on the screen, the camera is fixed at the same position to watch the screen, and the color correction software in the control computer is run to manually adjust the RGB color on each color point. value, until the final picture is judged to determine that the display effect of the picture in each position on the screen is consistent, and there is no color cast phenomenon. The toned screen is like a toning layer superimposed on the original screen.
如图1所示，本方案使用了大屏幕LED显示屏；采用一台计算机作为控制电脑。摄像机使用的是高清摄像机。HDMI线为5M的秋叶原Q542。控制电脑通过HDMI线与LED显示屏相连。摄像机固定在距离屏幕两米的位置上面向屏幕。控制电脑载入图片显示在LED屏幕上后，摄像机从左侧拍摄的画面偏绿色，从右侧拍摄的画面偏蓝色。因此左侧的两个调色点就要弥补除绿色的两个颜色—红色和蓝色，右侧的调色点测试要弥补红色和绿色。运行控制电脑中的校色软件，手动调整每个调色点上的RGB颜色值，直至经过最终画面判断，确定画面在屏幕上各个位置的显示效果保持一致，不出现偏色现象。最后输入的参数为：屏幕左上和左下的两个调色点的RGB值均调为(1.18,0,1.18)，右上和右下的两个调色点的RGB值均调为(1.18,1.18，0)。As shown in Figure 1, this scheme uses a large-screen LED display; a computer is used as the control computer. The camera uses a high-definition camera. The HDMI cable is 5M Akihabara Q542. The control computer is connected with the LED display through HDMI cable. The camera is fixed at a distance of two meters from the screen facing the screen. After the control computer loads the picture and displays it on the LED screen, the picture taken by the camera from the left side is greenish, and the picture taken from the right side is bluer. Therefore, the two toning points on the left should make up for the two colors other than green—red and blue, and the toning point test on the right should make up for red and green. Run the color correction software in the control computer, manually adjust the RGB color value on each color point, until after the final picture judgment, it is confirmed that the display effect of the picture in each position on the screen is consistent, and there is no color cast phenomenon. The final input parameters are: the RGB values of the two color points on the upper left and lower left of the screen are adjusted to (1.18, 0, 1.18), and the RGB values of the two color points on the upper right and lower right are adjusted to (1.18, 1.18 , 0).
所述LED(Light Emitting Diode)指发光二极管，LED显示是用细小的三基色(红、绿、蓝)LED灯组合排列来进行显示内容的，所以在不同的观看角度看到的发光灯组会有不同色差显示，如左侧是看到绿灯部分偏多偏绿色，右侧看到的蓝灯部偏多偏蓝色，这对观看和拍摄屏幕效果有极大的不良影响。；所述RGB(RED GREEN BLUE)指红绿蓝三基色；所述HDMI(High Definition Multimedia Interface)指高清晰度多媒体接口，是一种特定的音视频控制接口。The LED (Light Emitting Diode) refers to light-emitting diodes, and the LED display uses a combination of small three-color (red, green, blue) LED lights to display content, so the light-emitting light groups seen at different viewing angles will There are different chromatic aberration displays. For example, the green light part on the left side is more green and green, and the blue light part seen on the right side is more blue and blue, which has a great adverse effect on the viewing and shooting screen effects. ; The RGB (RED GREEN BLUE) refers to the three primary colors of red, green and blue; the HDMI (High Definition Multimedia Interface) refers to a high-definition multimedia interface, which is a specific audio and video control interface.
如图1，是本发明的调色控制流程图，具体包括以下调色步骤：Fig. 1 is the color matching control flow chart of the present invention, which specifically includes the following color matching steps:
1)在屏幕的四角引入调色点；1) Introduce color points at the four corners of the screen;
为了解决LED屏幕结构特点所产生的色差问题，系统在屏幕四角引入调色点，这些调色点可以通过调整RGB颜色值，人为的设置颜色。In order to solve the problem of color difference caused by the structural characteristics of the LED screen, the system introduces color points at the four corners of the screen, and these color points can be manually set by adjusting the RGB color value.
2)调整所述每个调色点的RGB颜色值。2) Adjust the RGB color value of each color point.
调色点的颜色数值和屏幕中心点的颜色数值呈拟合变化。统载入图片、视频或者三维场景这些素材并显示在屏幕上后，摄像机固定在不变的位置上观看屏幕，并运行控制电脑中的校色软件，手动调整每个调色点上的RGB颜色值。The color value of the color point and the color value of the center point of the screen show a fitting change. After loading pictures, videos or 3D scenes and displaying them on the screen, the camera is fixed at the same position to watch the screen, and the color correction software in the control computer is run to manually adjust the RGB color on each color point. value.
3)判断在所述屏幕前方某个位置观看到的屏幕上各个位置的画面显示效果是否一致，即不出现偏色现象。3) It is judged whether the picture display effect of each position on the screen viewed at a certain position in front of the screen is consistent, that is, no color cast occurs.
经过最终画面判断，确定画面在屏幕上各个位置的显示效果保持一致，不出现偏色现象。调色过的屏幕就像在原有画面上面叠加了一层调色图层。After the final picture judgment, it is determined that the display effect of the picture in each position on the screen is consistent, and there is no color cast phenomenon. The toned screen is like a toning layer superimposed on the original screen.
4)如果是，则跳转到步骤5)，否则跳转到步骤2)；4) If yes, then jump to step 5), otherwise jump to step 2);
5)保存每个调色点的值。5) Save the value of each color point.
在校色软件中保存所述调色值，在所述屏幕中也设置有存储器，用于保存所述调色值，以便在后续使用所述屏幕显示时，均采用所述调整好的调色值对显示的图像进行调色，确保在所述屏幕之前看到的图像无色差变化。The toning value is saved in the color correction software, and a memory is also provided in the screen for saving the toning value, so that the adjusted toning value is used when the screen is displayed later. The value tones the displayed image, ensuring that the image seen before the screen is free of chromatic aberrations.
优选的，最后输入的参数为：屏幕左上和左下的两个调色点的RGB值均调为(1.18,0,1.18)，右上和右下的两个调色点的RGB值均调为(1.18,1.18，0)。Preferably, the final input parameters are: the RGB values of the two toning points on the upper left and lower left of the screen are both adjusted to (1.18, 0, 1.18), and the RGB values of the two coloring points on the upper right and lower right are both adjusted to ( 1.18, 1.18, 0).
本发明还提供了一种屏幕校色装置，该装置包括：The present invention also provides a screen color correction device, which includes:
调色装置，调整屏幕上四个调色点的RGB颜色值；Toning device, adjust the RGB color values of the four toning points on the screen;
偏色判断装置，判断在所述屏幕前方某个位置观看到的屏幕上各个位置的画面显示效果是否一致，即不出现偏色现象；A color cast judgment device, for judging whether the picture display effects of various positions on the screen viewed from a certain position in front of the screen are consistent, that is, no color cast phenomenon occurs;
调色值保持装置，保存调整好的每个调色点的值。The color value holding device saves the adjusted value of each color point.
其中，所述调色点的颜色数值和所述屏幕中心点的颜色数据呈拟合变化。Wherein, the color value of the toning point and the color data of the center point of the screen show a fitting change.
所述偏色判断装置优选为摄像机，或者为其他图像/视频拍摄装置。The color cast judgment device is preferably a camera, or other image/video shooting devices.
优选的，所述屏幕左上和左下的两个调色点的RGB值均调整为(1.18,0,1.18)，所述屏幕右上和右下的两个调色点的RGB值均调整为(1.18,1.18，0)。Preferably, the RGB values of the two toning points at the upper left and the lower left of the screen are both adjusted to (1.18, 0, 1.18), and the RGB values of the two toning points at the upper right and lower right of the screen are both adjusted to (1.18 , 1.18, 0).
本发明还提供了一种计算机存储介质，其包括计算机程序指令，当执行所述计算机程序指令时，执行上述之一的方法。所述计算机存储介质可以为可读写的存储器，如硬盘，磁盘，FLASH存储器等，也可以为只读存储器，比如光盘等。The present invention also provides a computer storage medium comprising computer program instructions, when the computer program instructions are executed, one of the above methods is performed. The computer storage medium can be a readable and writable memory, such as a hard disk, a magnetic disk, a FLASH memory, etc., or a read-only memory, such as an optical disk.
所述屏幕包括处理器和计算机存储介质，通过所述处理器执行所述计算机存储介质上的计算机程序指令实现上述校色方法。The screen includes a processor and a computer storage medium, and the above-mentioned color calibration method is implemented by executing the computer program instructions on the computer storage medium by the processor.
通过本发明提供的技术方案，能解决在固定位置不同视角，摄像机拍摄或者观众观看LED显示屏显示的三维空间产生的色差问题。使画面在屏幕上各个位置的显示效果保持一致，得到更好的摄像和观看效果。The technical solution provided by the present invention can solve the problem of chromatic aberration caused by the three-dimensional space displayed by the camera or the audience watching the LED display screen at different viewing angles at a fixed position. Make the display effect of the picture in each position on the screen consistent, and get better camera and viewing effect.
以上所述仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内，所作的任何修改、等同替换以及改进等，均应保护在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be protected within the protection scope of the present invention.
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