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Method for encoding and decoding airspace with adjustable resolution based on interesting area

A region of interest and code adjustment technology, applied in television, electrical components, image communication, etc., can solve the problem of transmitting a large number of bits, achieve the effect of reducing the number of bits and improving the PSNR value

Active Publication Date: 2008-10-08
WUHAN UNIV
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Problems solved by technology

[0005] Aiming at the problem that high-resolution image coding needs to transmit a large amount of bits, the present invention provides a low bit-rate spatial resolution-adjustable coding method based on the region of interest in combination with the coding method of the region of interest, so as to reduce the cost of the entire code stream. Bit rate to ensure the quality of video information in the region of interest

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  • Method for encoding and decoding airspace with adjustable resolution based on interesting area
  • Method for encoding and decoding airspace with adjustable resolution based on interesting area
  • Method for encoding and decoding airspace with adjustable resolution based on interesting area

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Embodiment Construction

[0038] In the technical field of video coding and decoding, image information is always composed of many frame data, so it is always processed sequentially by frame. Under the existing coding framework, each frame of image is divided into many small blocks. By encoding each small block from left to right and from top to bottom, the compression encoding of the entire frame image is finally completed. For example, a 352X288 cif sequence, each frame is divided into 396 macroblocks. In existing video technologies, a macroblock is generally set as a square image block composed of 16×16 pixels. The present invention proposes to divide an image into super-macroblocks as coding units, and each super-macroblock includes 4 macroblocks, and by sequentially coding the super-macroblocks, the compression coding of the entire frame of images is finally completed. For example, it is set that a super macroblock is composed of 32×32 pixels, including 4 macroblocks. The present invention take...

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Abstract

The invention relates to spatial domain resolution adjustable coding method based on interested domain and corresponding decoding method, the coding method is that loading information of the interested domain, dividing the original image into an interested domain and a un-interested domain according to information of the interested domain, coding image in the interested domain according to resolution of the original image, coding image in the un-interested domain by resolution lower than that of the original image; the decoding method is that obtaining information of the interested domain from the coding code stream, dividing the macroblock code stream to be decoded in to interested domain decoding content and un-interested domain decoding content, and decoding the interested domain decoding content according to standard of high-definition images. The invention realizes spatial domain resolution adjustable coding method based on interested domain and ensures quality of the interested domain video information while greatly reduces number of bits for transmission of coded images, which is especially suitable for safety protection monitored transmission requirements.

Description

technical field [0001] The invention belongs to the field of video coding, especially for the special requirements of security monitoring, and is an adjustable coding and decoding method for the spatial resolution of the region of interest based on the video coding and decoding technology. Background technique [0002] With the increasing demand for security, the cost of using security protection and the benefits it generates, the market has put forward the demand for large-scale and long-distance monitoring of industries and enterprises, such as cross-regional network monitoring of banks, and networking of key urban areas across the country. monitoring etc. Due to the disadvantages of analog monitoring such as small range of use and easy attenuation of signals, centralized monitoring methods that transmit images remotely through the network emerged as the times require. [0003] The rapid development of science and technology has made various wireless networks more and mor...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N19/102H04N19/176
Inventor 胡瑞敏夏洋路依莎屠增辉
Owner WUHAN UNIV
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