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led display screen Point-by-point correction of luminance and chromaticity

From： Advertising LED Billboard-Outdoor LED Sign-Large Digital LED Screen Date：2020-05-20 15:58:03 Hits：583 Belong to：News

Point-by-point correction of luminance and chromaticity
Calibrate the function of the system.
The correction system is a LED display luminance correction system which integrates camera sampling, point-by-point luminance chromaticity measurement and point-by-point luminance chromaticity correction, which is specially used to solve the problem of uneven luminance and color of LED display screen. The calibration system, used with Nova M3 control system, provides the best chromaticity correction solution for LED display manufacturers and end customers, helps to improve the picture quality of LED display screen, and aims to solve the following uneven problems of LED display screen:
"the unevenness caused by the batch problem of the LED lamp of the display screen;
"the non-uniformity caused by the batch problem of IC driven by the display screen;
"the non-uniformity caused by the production process of the display screen;
"the unevenness caused by the attenuation of the LED lamp after the use of the display screen.
The correction system can achieve the following functions:
It supports the realization of 16-bit correction coefficient, and the low grayscale after correction is still exquisite.
After correction, the luminance difference is less than ±1%, and the chromaticity difference is less than 0.003;
Eliminate the batch chromaticity difference of LED lamp;
Eliminate the difference in brightness and chromaticity between zones and boxes, making the full screen as smooth as a mirror.
It supports single box correction and can be corrected box by box on the production line to ensure that the luminance and chromaticity of each box leaves the factory to achieve a high degree of uniformity.
Support on-site large screen correction, in the large screen display site to select a suitable viewing place for on-site correction, to ensure that the display screen in the field observation position to achieve a high degree of luminance and chromaticity uniformity;
Virtual screen / arc screen / raster screen / special-shaped screen correction is supported.
"brightness loss: 5% to 8%.
Nonlinear correction and color coordinate space conversion.
The working principle and system architecture of the calibration system.
Based on the basic principle of chromaticity compensation, the correction system compensates the primary color through the other two primary colors, and realizes the color adjustment by mixing colors. For each pixel, the coefficient matrix of 3 × 3 is calculated according to its luminance and chromaticity. When the image is displayed, the matrix is multiplied by the image data to be displayed, that is, the chromaticity and luminance correction are completed.

Top shine Electronics was founded on June 10, 2008, is a professional LED display screen sign product research and development, production, sales, installation and service as one of the high-tech enterprises.Also specialize in bus led destination screen sign、Next-current stop led sign、Bus station led display system、Variable Message led display Sign - VMS、Passageway Exit/Entrance led sign、Toll gate-Tunnel-Lane control LED screen sign、Arrival-Departure LED display sign、
bus-metro-railway sattion infromation led display、Parking guidance led sign system、Gas station price led sign、Creative & Customization LED display screen signs、Pharmacy led cross display sign、Transparent/Flexible/dip/smd/outdoor/indoor/fixed/rental LED display screen signs.
It has 4000 square meters of modern LED display standard factory, supporting cross LED screen and bus screen automatic assembly line, as well as more than 20 sets of domestic and foreign advanced equipment such as SMT mounter, DIP plug-in LED module reflow soldering, full-color LED display light gun instrument, vibration tester and so on. At present, our company has more than 200 technical and production personnel, LED display monthly stable production capacity of more than 2000 square meters. Cross and car bus screen products are exported to major cities at home and abroad. And there are more than 30 directly affiliated sales and service organizations throughout the country, and authorized service organizations have been set up in Hong Kong, the United States, Europe, South Korea and other countries and regions.

Since its inception, Top shine Electronics has built more than 3000 projects across the country and installed thousands of LED displays. Our company enjoys a high market reputation for its high-quality module unit products, leading technical level and first-class after-sales service. in subway, station, railway transportation, urban rail transit, road transportation, civil aviation transportation, stadiums, radio and television, public media, trading market, As well as all kinds of business organizations and government agencies and other market segments have a large number of guide sign screen, subway screen, station screen and cross screen bus line screen customers.

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led display screen Point-by-point correction of luminance and chromaticity

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