LED display point-by-point correction quietly ushered in the 2.0 era

If the pure brightness correction technology is used as the 1.0 era of point-by-point correction, then the chroma correction technology will become the 2.0 era of point-by-point correction. We know that the most original point-by-point correction mainly solves the problems of LED display screens and mosaics. The root cause of these problems lies in the difference in brightness of each lamp on the LED display. Therefore, only the brightness data of the full screen needs to be collected And calculate the mean square deviation of these data, so as to adjust the difference of each lamp of the LED display screen to achieve the same brightness of the LED lights of the entire screen, and the brightness uniformity of the entire screen reaches the optimal level.

The original point-by-point correction equipment was based on brightness measurement. The brightness value of each lamp point of the entire screen was collected by CCD. This process must also be calibrated to the correction equipment, and periodically calibrated during use to ensure data collection. Accuracy. The first-generation point-by-point correction equipment is often quite bulky, requiring a fixed-focus lens and a telephoto zoom lens, which are mainly used for single-box correction on the production line and full-screen correction on the factory floor.

With the promotion of point-by-point correction technology, correction equipment is also increasingly used in the installation site of LED display screens. Point-by-point correction has also become the last process of LED display screen engineering, and often determines whether customers pay the goods in time Or warranty money, so the demand for point-by-point correction still comes from LED display manufacturers. The on-site calibration of the project is relatively complex and difficult to calibrate. It often faces factors such as curved screens, shaped screens, tree shielding, telecom pole shielding, and street lamp shielding. Problems with poor communication conditions. To this end, Zhongke Weiyou also developed a new generation of portable point-by-point correction system specifically for the project site, but the main user demand is still mainly to solve the problem of brightness difference. Therefore, we still attribute this system to the 1.5 era.

The demand for point-by-point correction comes from LED display manufacturers and users. Recently, more and more customers have proposed to solve the problem of mixing different batches of lamps or modules. After the display is installed on site, it needs to match the previous display. To the problem of the same color gamut space, correct the display color gamut space to the standard color space such as SRGB / NTSC. And these problems, we collectively call it chroma correction. Chromaticity correction will not only be limited to basic problems such as chromatic aberration and mosaics of LED display screens, but also increase the color reproduction degree of LED display screens to a higher level. Therefore, we have reason to believe that with the point-by-point Calibration will usher in a broader development space.

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