LED display point by point correction method

An LED display, point-by-point calibration technology, applied in static indicators, instruments, etc., can solve the problems of deviation of calibration results, neglect of LED single lamp characteristics, and inconsistent LED single lamp characteristics.

Active Publication Date: 2020-12-18
颜色空间(北京)科技有限公司
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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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Embodiment Construction

[0100]In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below in conjunction with the drawings and specific embodiments.

[0101]The embodiment of the present invention provides a point-by-point correction method for an LED display screen, such asfigure 2 As shown, the method includes:

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

[0103]In this step, the method to obtain the brightness value of each LED single lamp is generally: light the LED display, take an image of the LED display through the camera, preprocess the image, and obtain the brightness of each LED single lamp from the image value. Generally, the gray value of the corresponding position of the image is used as the brightness value of the single LED light. For a color display screen, it is necessary to take images of the three primary colors of RGB and correct them se...

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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 screen calibration, in particular to a point-by-point calibration method for LED display screens.Background technique[0002]The LED display is a display device composed of small LED modules to display various information such as text, images, video, and video signals. Such asfigure 1 As shown, the LED display screen 100 is generally composed of an LED box 200, an LED module 300, and an LED light (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 composed of LED single lamps 400; the LED display 100 can be composed of LED cabinet 200 or LED module 300 or LED single The lamp 400 is composed.[0003]The reason why the LED display screen has been widely valued and developed rapidly is inseparable from its own advantages. These advantages can be summed up as: high brightness, low working voltage, low power consumption, large siz...

Claims

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Application Information

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Patent Type & Authority Patents(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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