LED display calibration method

A technology of LED display screen and calibration method, which is applied to static indicators, instruments, etc., can solve the problems of low calibration efficiency and long time required, and achieve the effects of improving calibration efficiency, shortening calibration time, and reducing the number of image acquisitions

Active Publication Date: 2017-12-08
XIAN NOVASTAR TECH
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Problems solved by technology

It can be seen that the point-by-point calibration requires that the brightness and chromaticity data of each LED light point can be accurately collected. If the size of the LED display is large, then multiple collections are required, such as point-by-point collection (that is, only light up each time) One LED point in a sub-area) or partition acquisition (that is, lighting up all LED points of the same color in the same sub-area each time), etc., so it takes more time, resulting in low calibration efficiency

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Embodiment Construction

[0018] 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.

[0019] In order to shorten the correction time and improve the correction efficiency, the embodiment of the present invention proposes a method for correcting LED display screens based on the collection of partition modules, which is a method of increasing the number of LED light points in a single collection and reducing the number of image collection times, as follows :

[0020] First of all, according to the resolution of the LED display screen and the on-site conditions of the image acquisition equipment such as the shooting distance of the CCD camera, as well as the user's demand for the accuracy of the corrected effect, determine the corresponding calibration module size and module acquisition mode, such as 2K resolution LED For ...

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Abstract

The invention relates to a method for correcting an LED display screen, comprising the steps of: determining the size of a calibration module of the LED display screen and the acquisition mode of each module; The calibration module includes a plurality of LED points of the same color that are controlled to be lit and have continuous positions; the initial brightness value or initial brightness and chromaticity value of each calibration module that is controlled to be lit are obtained according to the collected primary color image and determined accordingly brightness correction target value or brightness and chroma correction target value; The brightness correction coefficient or brightness correction coefficient of the LED light point of the same color is applied to the LED display. The present invention adopts the acquisition method of each module to increase the number of LED lamp points in a single acquisition, reduce the number of image acquisitions, shorten the correction time, and improve the correction efficiency.

Description

technical field [0001] The invention relates to the technical field of display correction, in particular to a method for correcting an LED display screen. Background technique [0002] Since the 21st century, the color display industry has developed unprecedentedly, and LED display screens have spread all over the central squares and commercial buildings of various cities. LED display screens are well received by people for their unique advantages of bright colors, high visibility, and low power consumption. The difference in brightness (for example, the brightness of the same production batch of LEDs may vary by nearly 50%, and the chromaticity may vary by 15-20nm), and the brightness and chromaticity of the display screens spliced ​​​​of multiple different production batches of LEDs are even more serious. These brightness and chromaticity differences are intolerable for human vision, so newly produced or year-old LED displays need to be effectively adjusted for brightness...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32
Inventor 赵星梅宗靖国王雨
Owner XIAN NOVASTAR TECH
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