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Binary image coding method through combination of bit operation and probability prediction

A binary image and probability prediction technology, applied in the field of image coding and information processing, can solve the problem of high coding complexity, reduce the complexity and avoid frequent updates.

Active Publication Date: 2018-10-09
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

However, the coding complexity of traditional CABAC algorithm is high

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  • Binary image coding method through combination of bit operation and probability prediction
  • Binary image coding method through combination of bit operation and probability prediction

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Embodiment Construction

[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0015] An embodiment of the present invention provides a binary image coding method combining bit operation and probability prediction, which mainly includes two processes of coding and decoding.

[0016] like figure 1 As shown, the encoding process steps are as follows:

[0017] 1. Predict the value of the current pixel based on the encoded pixel in the binary image.

[0018] In the embodiment of the present invention, the binary image is genera...

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Abstract

The invention discloses a binary image coding method through combination of bit operation and probability prediction. The method comprises a coding process and a decoding process. The decoding processis an inverse process of the coding process. The coding process comprises the following steps of predicting a value of a current pixel based on coded pixels in a binary image; carrying out bit operation on a predicted value and a true value of the current pixel to obtain a residual, and obtaining prediction accuracy; and coding the residual into a bit stream through utilization of a entropy coding algorithm, and taking the prediction accuracy as a global context probability model of a binary arithmetic coding algorithm if the binary arithmetic coding algorithm in the entropy coding algorithmis employed. A fixed coding interval is employed, and the complexity of the coding process is greatly reduced.

Description

technical field [0001] The invention relates to the field of image coding and information processing, in particular to a binary image coding method combining bit operation and probability prediction. Background technique [0002] With the popularity of handheld devices and the increase of camera resolution, image data on the Internet is growing rapidly. In order to efficiently transmit and store images, image coding has always been a hot research field. Traditional image coding includes prediction, transformation, quantization and entropy coding, and the first step of prediction can greatly reduce the amount of data required to represent image content. Prediction exploits the spatial correlation of the image, representing the current pixel as a function of the encoded pixels in its domain, such as simple linear interpolation. Afterwards, the real value is subtracted from the predicted value to obtain the residual, which is transformed into a set of coefficients in the freq...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/91
CPCH04N19/91
Inventor 陈志波应晨露金鑫
Owner UNIV OF SCI & TECH OF CHINA
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