Lightness data obtaining method and device for gamma correction of LED

A technology of brightness correction and brightness data, applied in the field of brightness data acquisition method and correction equipment, can solve the problems of low work efficiency, labor and time-consuming, complicated operation, etc., and achieve the effect of improving work efficiency, simplifying the operation process, and speeding up the speed.

Active Publication Date: 2008-06-18
SHENZHEN DIANMING TECH
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  • Claims
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Problems solved by technology

[0003] In order to solve the problems of low work efficiency, complicated operation, labor-intensive and time-consuming problems caused by acquiring the luminance values ​​of LED photosensitive elements one by one at present, the present invention provides a method and equipment for acquiring luminance data for LED luminance correction

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  • Lightness data obtaining method and device for gamma correction of LED
  • Lightness data obtaining method and device for gamma correction of LED

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Embodiment Construction

[0030] Various preferred embodiments of the present invention will be described in detail below.

[0031] The core idea of ​​the brightness data acquisition method used for LED brightness correction in the present invention is: first light up the LED display screen; This image determines the brightness of the dot matrix module to be tested. The dot matrix module to be tested here refers to the dot matrix unit that makes up the entire LED display. Generally, a 4×8 or 8×8 dot matrix can be defined as a dot matrix module to be tested.

[0032] The present invention utilizes the camera to shoot the lighted LED display screen, and a picture with many bright spots will be obtained, wherein each bright spot forms a light spot in the picture, and the brightness and position of each bright spot are the same as those of the LED display screen. There is a one-to-one correspondence between the pixel luminous points, so the bright spots on the picture contain the brightness information of...

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Abstract

The invention discloses a method for obtaining luminance data in LED brightness adjustment and equipment thereof. The method is that: A. an LED display screen is lighted; B. a camera is used for shooting a measuring dot matrix module on the LED display screen; C. images obtained go through image processing, and the luminance of the measuring dot matrix module is confirmed according to the images; the adjusting equipment of the invention comprises: a camera used for acquiring light spot images of bright spot on the LED display screen and a processing module used for processing image information and confirming measuring bright spot and luminance data. The invention utilizes the camera to obtain the light spot images of the dot matrix module one by one so as to realize the collection of LED display screen luminance data. Compared with the method for obtaining single LED photosensitive element lightness value one by one, the invention improves working efficiency, simplifies operational process, saves collecting time and accelerates the speed of collecting luminance.

Description

technical field [0001] The invention relates to the technical field of image display correction, in particular to a brightness data acquisition method for LED brightness correction and a correction device thereof. Background technique [0002] Usually, the LED display is composed of hundreds of thousands or millions of semiconductor components LED (ie, light-emitting diodes). Due to the discreteness of the components themselves, it is difficult to achieve high uniformity of the display. However, the point-by-point correction technology can solve the uniformity problem of the display screen, realize the independent adjustment of the brightness of the luminous base color, eliminate various color deviations during display, and ensure the uniformity and consistency of the color and brightness of the entire screen. At present, the more common technology in the industry is: first light up the LED display, then manually move the luminance meter / luminance meter to align with the LED...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32G09G3/20G09G5/10H05B33/08H05B33/14H05B37/02G01J1/00H05B44/00
CPCY02B20/42Y02B20/40
Inventor 黄硕张毅
Owner SHENZHEN DIANMING TECH
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