Screen image acquisition method based on two-dimensional code

Abstract

The invention relates to a screen image acquisition method based on a two-dimensional code. The method comprises the following steps of: obtaining an original image, wherein the original image comprises a two-dimensional code area and an original area; identifying the two-dimensional code area in the original image; extracting compression information in the two-dimensional code area; extracting image information in the original area; wherein the image information comprises a pixel mean value, a first position coordinate, a second position coordinate, a compression parameter and a threshold value, generating a target sub-image according to the compression information, replacing the two-dimensional code area from the original image by using the target sub-image to generate a replacement image, and performing registration processing on the replacement image according to the image information to obtain a target image. According to the technical scheme, sub-images are processed, so that thecomplexity of data compression of the original image is avoided, and only the incomplete local image is obtained under the condition that the information content of the two-dimensional code is not known, so that the data transmission concealment of the image is enhanced.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a screen image acquisition method, device, computer equipment and storage medium based on a two-dimensional code. Background technique [0002] With the development of computer technology, image processing technology is more and more developed. Image processing refers to the removal of noise, enhancement, restoration, segmentation, and feature extraction of images through computer equipment. Image processing can be the transformation, coding and compression of image data to facilitate image storage and transmission. Image processing can be applied to computer vision, image processing, etc. Data transmission and image processing are important research topics in the field of communication. When an image is transmitted from one computer device to another computer device, there can be multiple transmission methods, such as wired transmission, wireless transmission, etc., ...

AI Technical Summary

Problems solved by technology

[0003]However, when the camera of computer equipment is used for image processing, the size of the collected image is often far from the original image, and the effect of shooting on the screen is often not ideal. There are problems such as image translation, rotation, and zooming. If you want to get an image close to the original image, you need to perform registration processing on the collected image, and the registration needs to be based on the original image size and position direction

Therefore, traditional image processing methods have the problem of poor quality of transmitted images

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