Multipath compressed kernel parallel encoding control method on basis of JPEG-LS (Joint Pho-tographic Experts Group-Lossless Standard) algorithm

Abstract

The invention relates to a multipath compressed kernel parallel encoding control method on the basis of a JPEG-LS (Joint Pho-tographic Experts Group-Lossless Standard) algorithm. According to the method, a compressed kernel implemented on the basis of the JPEG-LS standard algorithm is adopted to form an N-path compressed kernel parallel encoding control method to complete the image compression by the following steps: (1) dividing a source image into N sub-images which are arranged in R rows and in C lines; (2) completing initializing related parameters of N paths of JPEG-LS compressed kernels in time and preparing to encode; (3) by carrying out write control and read control on N Ix_FIFO (First In First Out), randomly starting the N paths of JPEG-LS compressed kernels so as to uninterruptedly encode the source image; and (4) encoding the source image by a parallel encoding system implemented by the control method. The processing effect of the method is nearly equivalent to the effect of utilizing one compressed kernel implemented on the basis of the JPEG-LS standard algorithm to complete encoding the source image, but the throughput rate and the processing rate of the method are nearly improved by N times.

Description

technical field [0001] The invention relates to a parallel compression control method based on a JPEG-LS algorithm, belonging to the technical field of image compression. Background technique [0002] With the development of science and technology, in the field of image processing, the amount of data to be processed is increasing, and improving the speed of image processing has become a huge challenge; how to complete image transmission with the least amount of time and space Processing, is the key point in this field. [0003] The processing speed can be improved by adopting an image compression algorithm with a high compression ratio, or adopting a parallel compression scheme. When an image compression algorithm with a high compression ratio is used, the distortion degree of the existing algorithm often cannot meet the special requirements of the remote sensing image; at present, the compression algorithm of the remote sensing image is preferably lossless or near-lossless...

AI Technical Summary

Problems solved by technology

[0008] The technical solution problem of the present invention is: overcome the deficiencies in the prior art, when realizing for JPEG-LS image compression standard, throughput rate and processing speed can not meet real-time demand, the present invention proposes a kind of multi-channel based on JPEG-LS standard algorithm The parallel encoding control method of the compression kernel quickly and conveniently fulfills the demand for high throughput of image compression on the existing basis. This control method can realize high-speed and high-efficiency remote sensing image compression, and has very good system scalability

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