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Coding method and encoder

A coding method and coder technology, applied in image communication, digital video signal modification, electrical components, etc., can solve problems such as large visual distortion

Active Publication Date: 2022-07-29
海思技术有限公司
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  • Description
  • Claims
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Problems solved by technology

At this time, large visual distortions are often introduced into the decoded image.
Therefore, there is still room for optimization in the existing means of mandatory bit rate control

Method used

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  • Coding method and encoder

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Embodiment Construction

[0067] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

[0068] The technical solutions involved in the embodiments of this application may not only be applied to existing video coding standards (such as H.264, HEVC and other standards), but also may be applied to future video coding standards (such as H.266 standard). The terms used in the embodiments of the present application are only used to explain specific embodiments of the present application, and are not intended to limit the present application. The following briefly introduces some concepts that may be involved in the embodiments of the present application.

[0069] Video coding generally refers to the processing of sequences of pictures that form a video or video sequence. In the field of video coding, the terms "picture", "frame" or "image" may be used as ...

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Abstract

The present application relates to the field of image processing, and provides an encoding method and an encoder. The method includes: when the mandatory code rate control condition is satisfied, simultaneously performing bit truncating of the space domain branch and coefficient discarding of the frequency domain branch on the to-be-coded block, and calculating the corresponding cost values ​​of the bit truncating and the coefficient discarding respectively, according to the The cost value determines the final encoded bits, and improves the decoded image quality as much as possible on the premise of preventing the overflow of the code stream buffer.

Description

technical field [0001] The present application relates to the field of image processing, and in particular, to an encoding method and an encoder. Background technique [0002] In recent years, the improvement of video image applications in multiple dimensions (such as resolution, frame rate, etc.) has greatly increased the amount of data processed by the video processing system. The bandwidth, power consumption and cost of video processing systems have all increased significantly. In order to effectively reduce the bandwidth, power consumption and cost of the video processing system, compression technology is applied in the video processing system. [0003] Compression technology can effectively reduce the occupation of the memory and bandwidth of the video processing system and reduce the cost of the video processing system. Compared with lossless compression, visually lossless lossy compression usually has a higher compression rate, which can save more memory and bandwid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/122H04N19/124H04N19/13H04N19/184
CPCH04N19/122H04N19/124H04N19/184H04N19/13H04N19/18H04N19/132H04N19/61H04N19/152H04N19/103H04N19/146H04N19/176
Inventor 冯俊凯曲波王丽萍
Owner 海思技术有限公司
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