Fast and real-time video coding and decoding compression algorithm

A real-time video, encoding and compression technology, applied in the field of video encoding and decoding, can solve problems such as no embedded devices

Active Publication Date: 2016-11-09
成都杰华科技有限公司
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Problems solved by technology

[0015] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a fast real-time video encoding and decoding compression algorithm, which can realize high-definition image information high-speed co

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Embodiment Construction

[0057] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0058] Such as figure 1 As shown, a fast real-time video coding compression algorithm, including:

[0059] S01. Input a bitmap image sequence, and perform brightness and color difference signal conversion on the bitmap image sequence.

[0060] In the step S01, the method for transforming the luminance and color difference signals is: calculate the luminance and color difference signals (Y, Cb, Cr) of the red, green and blue (R, G, B) of each pixel in the bitmap image sequence according to formula 1 , and the luminance and color difference signal (Y, Cb, Cr) is divided into three parts for subsequent processing; in this application, 10 shifts are used here to replace 9 floating-point number multiplications, and under mainstream computer har...

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Abstract

The invention discloses a fast and real-time video coding and decoding compression algorithm. The coding algorithm comprises the following steps of S01, inputting a bitmap image sequence, and performing the brightness color difference signal transformation on the bitmap image sequence; S02, performing the differential transformation on the bitmap image sequence after the brightness color difference signal transformation process; S03, performing the fast frequency domain transformation on the bitmap image sequence after the differential transformation process; S04, performing the rapid quantization on the bitmap image sequence after the fast frequency domain transformation process; S05, conducting the entropy compression on the fast quantized bitmap image sequence, and outputting the coded data of a compressed video. In addition, the invention discloses the specific steps of the decoding algorithm. According to the invention, the information of a high-definition image can be compressed at about 8-16 megabytes per second based on software. In this way, the transmission and storage problem during the video real-time coding and decoding process of a video processing host and partly embedded equipment without special hardware processing in the prior art is solved. The method can be widely applied to the fields of remote control, remote monitoring and the like for computer equipment.

Description

technical field [0001] The invention relates to the technical field of video codec, in particular to a fast real-time video codec compression algorithm. Background technique [0002] Modern video image compression technology is to reduce the redundant data of the bitmap image sequence, so that the video image can be quickly transmitted and stored under the existing communication and storage technology conditions. The following takes advanced video codec (H.264) as an example of the typical international digital video image compression technology. The compression technology is divided into bitmap image to color difference signal conversion, motion prediction, frequency domain conversion, quantization, entropy coding, transmission , entropy coding restoration, double conversion, frequency domain inverse transformation and filtering, etc., under the condition of hardware optimization, it can compress the information of about 1592 megabits of high-definition images at 24 frames ...

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Application Information

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IPC IPC(8): H04N19/42H04N19/60H04N19/91
CPCH04N19/42H04N19/60H04N19/91
Inventor 陈廷钏唐悦
Owner 成都杰华科技有限公司
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