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Splicing wall color uniformity and consistency control method based on video camera

A technology with uniform color and control method, applied in color TV, image communication, picture duplicator, etc., can solve the problems of uneven brightness, inconsistent color, uneven lighting of LED light source, etc., to achieve the effect of color uniformity

Inactive Publication Date: 2018-06-29
HENAN HONCHOO TECH LTD
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Problems solved by technology

Due to the uneven light emission of the LED light source, the brightness displayed on the image is uneven, there is a dark edge vignetting effect, and the problem of color inconsistency within and between units during long-term operation caused by differences in light source characteristics and attenuation speeds
The color display uniformity and consistency of the LED light source DLP splicing system is a technical problem that needs to be studied and solved.

Method used

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  • Splicing wall color uniformity and consistency control method based on video camera
  • Splicing wall color uniformity and consistency control method based on video camera
  • Splicing wall color uniformity and consistency control method based on video camera

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Embodiment Construction

[0016] like Figure 1-5 The camera-based video wall color uniformity and consistency control method is characterized in that it has a measurement system, including multiple projectors, CCD cameras, computers, and projection screens, wherein the image device of the camera: 2 / 3 inches 2.2 million pixels 3CCD, effective pixels of each frame image: 1920 (horizontal) × 1080 (vertical); the workflow of the measurement system is: then the computer controls the CCD camera to collect the three-color brightness information on the projection screen in time-sharing, and based on these collected Calculate the color coordinate distribution of the synthesized color on the screen through the obtained three-color brightness information; through the obtained color coordinate distribution, you can analyze whether the color of the synthesized color on the screen is uniform,

[0017] According to the color display adjustment technology, the adjustment process of uniformity and consistency is formu...

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Abstract

The invention discloses a splicing wall color uniformity and consistency control method based on a video camera.A measurement system is provided, and comprises a plurality of projectors, a CCD camera,a computer, and a projection screen. The image device of the video camera comprises a 2 / 3-inch 2.2-megapixel 3CCD, and each frame of image has an effective pixel of 1920(horizontal)*1080(vertical). According to the working process of the measurement system, under the control of the computer, the CCD camera is used to acquire three-color brightness information on the projection screen in a time-sharing way, and according to the acquired three-color brightness information, color coordinates of secondary colors on the screen are calculated; whether the colors of the secondary colors on the screen are arranged in a uniform way is analyzed according to the distribution of the acquired color coordinates; a color automatic adjusting device is used for the point-by-point compensation of single projection display units to realize the color uniformity in the units, and is used to optimize the brightness and the color parameters of the various units automatically, and therefore the long-term consistency and the long-term stability of the colors and the brightness of the frames among various display units of a display system are realized.

Description

technical field [0001] The invention belongs to projection display control technology, in particular to a method for controlling color uniformity and consistency of a mosaic wall based on a camera. Background technique [0002] With the rapid development of social informatization, the application of professional monitoring centers and the demand for massive information display in various industries, large-screen splicing display systems are playing an increasingly important role in various fields. Large-screen splicing walls have been widely used in power, finance, transportation and other industries, and are gradually developing into safe smart cities and public surveillance markets. The large-screen splicing display system has become an indispensable core basic system for information visualization. The DLP splicing wall of the new LED light source continues to lead the splicing market with its unique advantages. In the application field, there are high requirements for t...

Claims

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Application Information

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IPC IPC(8): H04N9/31
CPCH04N9/3147H04N9/3182H04N9/3194
Inventor 杜辉汪鑫王兆岗徐起龙苏龙铎
Owner HENAN HONCHOO TECH LTD
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