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A coding coefficient elimination method and an improved HEVC coding method

A technology of coding coefficients and coding methods, applied in the field of coding coefficient elimination and improved HEVC coding, can solve the problems of performance considerations, uncontrollable coding image distortion, etc. Lossless effect

Active Publication Date: 2022-03-04
SHANGHAI FULLHAN MICROELECTRONICS
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Problems solved by technology

However, the coefficient elimination technology is not a method defined by the HEVC standard. The performance of the existing coefficient elimination methods cannot be considered within the HEVC cost calculation system, resulting in uncontrollable distortion of the encoded image using the existing coefficient elimination methods.

Method used

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  • A coding coefficient elimination method and an improved HEVC coding method
  • A coding coefficient elimination method and an improved HEVC coding method
  • A coding coefficient elimination method and an improved HEVC coding method

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Embodiment Construction

[0036] In order to make the purpose and features of the present invention more comprehensible, the specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings. However, the present invention can be implemented in different forms and should not be limited to the described embodiments. Moreover, in the case of no conflict, the embodiments in the present application and the features in the embodiments are allowed to be combined or replaced with each other. The advantages and features of the present invention will become clearer in conjunction with the following descriptions.

[0037] It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0038] It should also be stated that the purpose of numbering the steps in the present invention is to faci...

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Abstract

The present invention relates to the technical field of image compression, and provides a method for eliminating encoding coefficients, which is compatible with HEVC standard encoders, and includes the following steps: S1, calculating a threshold according to a threshold determination formula; S2, if the standard inverse quantization process If the encoded quantized coefficient is greater than the threshold, the encoded quantized coefficient is retained; S3. If the encoded quantized coefficient in the standard inverse quantization process is smaller than the threshold, the encoded quantized coefficient is cleared to zero. The present invention can be regarded as a process of "removing redundancy" for coding coefficients, which can effectively improve coding efficiency, including coding speed, compression rate, etc., and has no damage to original coding performance and effect.

Description

technical field [0001] The present invention relates to the technical field of image compression, in particular to a coding coefficient elimination method and an improved HEVC coding method. Background technique [0002] HEVC (High Efficiency Video Coding) is a JCT-VC (Joint Collaborative Team) reorganized by VCEG (Video Coding Experts Group) and MPEG (Moving Picture Experts Group) in April 2010. on Video Coding (Video Coding Joint Group), jointly developed a new generation of video coding standards. As the next-generation mainstream video coding standard, HEVC is developed on the basis of the H.264 standard. It has greatly improved compression efficiency, parallel processing capabilities, and network adaptability. [0003] The HEVC standard encoder is mainly oriented to consumer application scenarios, specifically reflected in the fact that it is more suitable for use in high bit rate, high image quality application scenarios. For low-bit-rate or even extremely low-bit-ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/124H04N19/91H04N19/184H04N19/60H04N19/132H04N19/18H04N19/61
CPCH04N19/124H04N19/91H04N19/184H04N19/60H04N19/132H04N19/18H04N19/61
Inventor 章旭东田景军詹进朱媛媛潘昱
Owner SHANGHAI FULLHAN MICROELECTRONICS
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