Method utilizing camera to automatically adjust splicing screen color brightness
A technology of automatic adjustment and color brightness, which is applied in the field of splicing screen color gamut unification, which can solve the problems of individual visual system, high price, complicated debugging process, etc.
Inactive Publication Date: 2016-11-23
北京东方久瑞科技有限公司
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Problems solved by technology
Usually the color brightness meter and illuminance meter used in the project measure the difference between color and brightness, but the price of such instruments is relatively expensive and it is a contact test
Another debugging method is that the debugging personnel use their own visual system as a tool to measure the color, and adjust the color brightness of each splicing unit to be consistent. This process has the subjectivity of the individual visual system, and the debugging process is cumbersome, which makes the debugging process more complicated.
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[0010] The present invention is described in detail below in conjunction with accompanying drawing:
[0011] As shown in Fig. 1, the present invention first establishes RS232 port connection, sends instruction to each splicing unit through port, initializes the board information of each splicing unit, shows the image that full screen is RGB (255,255,255). After turning on the preview mode of the camera, use the left button of the mouse to select the points in the upper left corner and lower right corner of the full screen in the display image area of the camera. The rectangular area formed by these two points is considered as the effective area image of the full screen. Through human observation, select one of the splicing units as the standard sub-screen, draw a rectangular frame in the selected full-screen effective area and the selected standard sub-screen by dragging the mouse, and the program will automatically recognize it The sequence number of this subscreen.
[001...
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The invention relates to a method utilizing a camera to automatically adjust splicing screen color brightness. According to the method, connection with an RS232 port is carried out, the board card information is initialized, full-screen RGB (255, 255, 255) images are displayed through a fully-spliced screen, effective region images of the fully-spliced screen are automatically acquired by the camera, one of splicing units is manually selected as a standard splicing sub screen, vertexes of each splicing unit are detected in an automatic or half-automatic mode, region images of each splicing unit are acquired, RGB or HSI mean values of the region images of each splicing unit are calculated, instructions respectively are sent to splicing units through RS232 serial port wires, and hue and brightness unification of each splicing unit is realized.
Description
technical field [0001] The invention relates to the field of uniform color gamut of splicing screens, especially a method for adjusting chromaticity and brightness of splicing screens Background technique [0002] Splicing screen is a very practical way to realize large-screen display. In real life, large screen displays are widely used in business meetings, teaching lectures, advertising, and industrial monitoring. It mainly has the advantages of high display quality, high resolution, bright colors, low manufacturing cost, and long service life. [0003] The splicing screen is a large screen spliced by multiple projection units. Due to the differences in the production of each projection splicing unit, the large display will have inconsistencies in color and brightness. Usually the color brightness meter and illuminance meter used in the project measure the difference of color and brightness, but the price of such instruments is relatively expensive and it is a contact ...
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Inventor 赵青娥王宏炜朱谆谆
Owner 北京东方久瑞科技有限公司