Point-by-point correction method for LED display screen

A technology of LED display and point-by-point calibration, applied to static indicators, instruments, etc., can solve problems such as deviation of calibration results, failure to achieve consistency, inconsistent characteristics of LED single lights, etc.

Active Publication Date: 2020-01-14
颜色空间(北京)科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0007] However, the standard luminance of this patent cannot be very close to the ideal value of the standard luminance, whether it adopts the value designed at the factory or the average value, which leads to deviations in the calibration results.
Moreover, all LED single lamps in this patent use the same standard brightness, but the characteristics of each LED single lamp are inconsistent. This patent ignores the characteristics of each LED single lamp, and the output of each LED single lamp is corrected. The brightness cannot be consistent, so the transition process of the LED display from bright to dark will still exist.

Method used

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  • Point-by-point correction method for LED display screen
  • Point-by-point correction method for LED display screen
  • Point-by-point correction method for LED display screen

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Embodiment Construction

[0100] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0101] An embodiment of the present invention provides a point-by-point calibration method for an LED display, such as figure 2 As shown, the method includes:

[0102] Step S100: Obtain the brightness value of each single LED lamp on the LED display screen.

[0103] In this step, the method of obtaining the brightness value of each single LED light is generally: light up the LED display, take an image of the LED display through the camera, preprocess the image, and obtain the brightness of each single LED light from the image value. Generally, the gray value of the corresponding position of the image is used as the brightness value of the LED single lamp. For a color display, images of the three primary colors of RGB need to be taken separately and c...

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Abstract

The invention discloses a point-by-point correction method for an LED display screen, and belongs to the field of LED display screen correction, and the method comprises the steps: S100, obtaining thebrightness value of each LED single lamp on an LED display screen; S200, calculating to obtain a standard brightness value of each LED single lamp based on a gradient descent method according to thebrightness values of all the LED single lamps; S300, calculating a correction coefficient of each LED single lamp according to the brightness value of each LED single lamp and the standard brightnessvalue; and S400, correcting the LED display screen according to the correction coefficient of each LED single lamp. According to the invention, the brightness difference between the LED single lamps can be well eliminated, the uniformity of the LED display screen is remarkably improved, and the display quality is improved.

Description

technical field [0001] The invention relates to the field of LED display correction, in particular to a point-by-point correction method for an LED display. Background technique [0002] LED display screen is a kind of display device, which is composed of small LED modules and is used to display various information such as text, image, video, video signal and so on. Such as figure 1 As shown, the LED display screen 100 is generally composed of an LED box 200 , an LED module 300 and an LED luminous lamp (or single lamp) 400 . The LED module 300 is composed of LED single lamps 400; the LED cabinet 200 can be composed of LED modules 300 or directly by LED single lamps 400; the LED display 100 can be composed of LED cabinets 200 or LED modules 300 or LED single lamps. Composed of 400 lamps. [0003] The reason why LED display has been widely valued and developed rapidly is inseparable from its own advantages. These advantages are summarized as follows: high brightness, low o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
CPCG09G3/32G09G2320/0233
Inventor 陈听
Owner 颜色空间(北京)科技有限公司
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