Image compression and decompression method and device

Abstract

The embodiment of the invention discloses an image compression and decompression method and device, and the method comprises the steps of obtaining at least one image pair in a target image, wherein each image pair comprises any two adjacent frames of images in the target image; determining the pixel difference data between the two frames of images in the at least one image pair, sorting the pixeldifference data, and determining the sorted pixel difference data as the compressed data corresponding to a compressed frame image in the target image, wherein the compressed frame image is a frame image except a first frame image in the target image; and synthesizing the first frame of image in the multiple frames of images and the compressed data into a compressed image corresponding to the target image. The method also includes decompressing the generated compressed image by obtaining the pixel difference data. By adopting the image compression and decompression method and device, the display effect of the image can be ensured while the size of the image is reduced, the lossless compression of the image is effectively realized, and the network transmission consumption of the image in the application is reduced.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to an image compression and decompression method and device. Background technique [0002] With the rapid development of the Internet, people cannot do without the Internet for entertainment, study, and work. Therefore, more and more websites or applications have emerged to meet people's various needs. Just because of the increase of websites or applications, there are generally more than one Internet products in the same field, and the number of people using Internet products in this field generally does not change significantly. These Internet products need to be optimized in terms of function and vision to ensure Enhance user stickiness, thereby increasing traffic. Studies have shown that people generally have a deeper memory or impression of images, videos, etc., which makes more Internet products pay more attention to the display effect of their pages, but because the displa...

AI Technical Summary

Problems solved by technology

Studies have shown that people generally have a deeper memory or impression of images, videos, etc., which makes more Internet products pay more attention to the display effect of their pages, but because the display effect of images or videos is better, their own The larger the storage volume, the longer the transmission time required, especially for dynamic images with multiple frames of images. Therefore, how to reduce the storage volume of images while minimizing the impact on image display becomes an extremely important task. Important issues

[0003] Nowadays, most of the images are reduced by reducing the number of frames of the image, removing unnecessary feature points in the image to reduce the storage volume of the image, or using a lossy compression algorithm to compress the image, using a lossy compression method Store pictures, such as webp format, to reduce the storage volume of the image. Although unnecessary feature points are removed, the data of the original image is still destroyed to a certain extent, which may cause the animation of the image to appear unsmooth when displayed. Or image jagged and other issues

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