LED screen calibration image acquisition method, calibration method, acquisition device and calibration system

Abstract

The present invention relates to the field of LED display technology, and specifically discloses a method for collecting corrected images of LED screens, a correction method, a collection device and a correction system. The collection method includes calculating the target collection width and height range of the camera; The target collects the width and height range and the preset light point interval strategy to generate several light point lighting schemes; generates corresponding display control information and shooting control information according to each light point lighting scheme; and obtains the camera under different shooting control information Steps such as correcting images taken by LED display screens under different display control information. The invention obtains as few corrected images as possible on the basis of meeting the data accuracy requirements, improves the image acquisition efficiency, and the obtained corrected images can be covered with CMOS pixels as much as possible, which solves the problem of out-of-focus and distortion around the corrected images in the prior art Problems, to ensure the subsequent correction of the LED display.

Description

technical field [0001] The present invention relates to the technical field of LED screen calibration, in particular to a method for collecting calibration images of LED screens, a calibration method, a collection device and a calibration system. Background technique [0002] The equipment that must be used in the calibration process of the LED display is various types of cameras and various lenses that match the cameras. The host computer obtains the correction pictures through the cameras with the lenses, and calculates the correction coefficient through the correction pictures. [0003] However, since each lens has its own optimal magnification range, if the actual magnification of the lens is not within the optimal magnification range of the lens in actual use, the corrected image collected by the lens will appear out of focus As well as the problem of distortion, the data collected during the calibration process is inaccurate, which in turn affects the calibration effec...

AI Technical Summary

Problems solved by technology

[0003] However, since each lens has its own optimal magnification range, if the actual magnification of the lens is not within the optimal magnification range of the lens in actual use, the corrected image collected by the lens will appear out of focus And the problem of distortion, resulting in inaccurate data collected during the calibration process, which in turn affects the calibration effect of the LED display

If the optimal magnification range is determined, in order to avoid mutual interference between two adjacent pixels displayed on the collected LED display, it is necessary to display at intervals, but every time the number of intervals displayed at intervals increases by one, the number of collected photos Therefore, under the premise of ensuring the accuracy of the collected data, if the minimum number of interval points cannot be determined, the number of photos collected at this time will be significantly increased, which will have a certain impact on the collection efficiency

In addition, the higher the resolution of the camera's CMOS, the greater the requirement for the proportion of collected data, and the finer the requirements for the collected images. If there are no strict requirements for the collected images, the correction effect will also be affected.

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