High-speed image compression VLSI coding method based on systolic array, and encoder

Abstract

The invention relates to a high-speed image compression VLSI coding method based on systolic array, and an encoder. The encoder comprises an image-level controller, a code block level controller, an image segmentation partitioning device, a first, a second and a third level two-dimensional small wave converters, a QRG combined encoder and a code stream packer; the method comprises the steps of: first, using the image segmentation partitioning device to segment the image into code blocks with the size of 32*32; respectively using the first, the second and third level two-dimensional small wave converters for carrying out three-level small wave conversion on the image, then using the QRG combined encoder to read the three-level small wave conversion coefficient, carrying out best quantization, self-adaptive zero run length encoding and Exp-Golomb encoding with k=0, and obtaining code stream; and finally, using the code stream packer to pack the code stream of each code block into file according to the preset format for outputting. The invention greatly accelerates the image compression speed, effectively prolongs the recording time, and improving the transmission capability.

Description

technical field [0001] The invention relates to a high-speed image compression encoding method and encoder based on a systolic array, in particular to a high-speed image compression encoding method and an encoder designed based on wavelet transform and systolic array technology and oriented to VLSI hardware implementation. Background technique [0002] Image information has the characteristics of large amount of information and large amount of data. According to analysis, among the information received by human beings, 20% is received through sound, while the information received through eyes exceeds 80%. It’s better to see at once”, which vividly illustrates the importance and urgency of image information exchange. However, digital images are more than two-dimensional data, and as the size increases, the amount of data increases at a geometric rate. If the contradiction between the huge amount of data and the limited recording space and transmission bandwidth cannot be res...

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Problems solved by technology

[0005] The technology of the present invention solves the problem: it overcomes the speed limitation that the general processor, programmable DSP and common image compression chip are difficult to realize the real-time compression of high frame rate and high resolution image, and provides a high-speed image compression VLSI coding method based on a systolic array and When the encoder is implemented by FPGA or ASIC, it can realize real-time image compression with a higher compression ratio while consuming less hardware resources, and provide real-time compression storage / transmission for high frame rate and high resolution digital images. The core solution

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