Method and device for correcting brightness of LED display device

A display device and brightness correction technology, applied in static indicators, instruments, etc., can solve the problems of inconsistent spatial arrangement of LED light points, affecting display quality, etc., to achieve uniform consistency and correct display effects.

Active Publication Date: 2014-05-07
XIAN NOVASTAR TECH
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

If the pixel (or LED light point) spacing of the LED display becomes smaller, the problem of inconsistent spatia

Method used

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  • Method and device for correcting brightness of LED display device
  • Method and device for correcting brightness of LED display device
  • Method and device for correcting brightness of LED display device

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Embodiment Construction

[0014] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] The present invention aims at display bright lines and problems caused by inconsistent spatial arrangement of LED light spots on LED display devices such as LED display screens, LED cabinets, and even LED light panels due to manufacturing processes or assembly processes in the prior art. For / or the problem of displaying dark lines, the main design principle of the proposed solution is to use brightness adjustment / correction to compensate for display bright lines and / or display dark lines caused by inconsistent spatial arrangement of LED light points. The following will combine figure 1 , figure 2 and Figure 3a and 3b A method for correcting brightness of an LED display device proposed by the present invention will be descri...

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Abstract

The invention relates to a method and device for correcting the brightness of an LED display device. The method includes the steps that (a1) a shot image of a set picture displayed by the LED display device is acquired; (a2) the shot image is analyzed and processed to obtain the glow brightness of a plurality of lamp point areas in the shot image corresponding to a plurality of LED lamp points of the LED display device respectively, wherein the effective light-emitting area of each lamp point area in the lamp point areas is used as one of calculation factors of the glow brightness of the lamp point area; (a3) the brightness correction coefficients of the LED lamp points are calculated according to the glow brightness of each lamp point area in the lamp point areas and a brightness correction target value. According to the method and device, in order to solve the bright/dark line problem caused by the inconsistency of the spatial arrangement positions of the LED lamp points on the LED display device, the bright/dark line is compensated in a brightness adjusting/correcting mode, the display effect of the LED display device can be corrected, and therefore the evenness and consistency on human vision are achieved.

Description

technical field [0001] The invention relates to the technical field of display correction, in particular to a brightness correction method of an LED display device. Background technique [0002] Due to its many advantages such as high visibility, low power consumption, free assembly and low cost, LED display screens have been widely used in various occasions in daily life. As a spliced ​​display, the LED display is usually spliced ​​by multiple LED boxes, and a single LED box is spliced ​​by multiple LED light panels. Due to the limitation of precision and other process reasons, the distance between the LED light points on the edge of adjacent modules at the splicing point may be greater or smaller than other places such as the distance between the LED light points at the non-edge, resulting in changes in the luminous density of the LED light points at the edge. When the display In low-frequency images, bright lines or dark lines will appear, and its geometric misalignment ...

Claims

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Application Information

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IPC IPC(8): G09G3/32
Inventor 赵小明郑瑞涛杨城
Owner XIAN NOVASTAR TECH
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