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Method and device for determining coding mode

A technology for encoding mode and determining method, applied in the field of video processing, can solve problems such as affecting encoding efficiency and complex encoding mode selection process, and achieve the effects of improving encoding efficiency, reducing encoding complexity, and improving encoding performance

Pending Publication Date: 2022-07-15
ALIBABA (CHINA) CO LTD
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Problems solved by technology

However, in practice, it is found that the selection process of this encoding mode is relatively complicated, which affects the encoding efficiency

Method used

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  • Method and device for determining coding mode
  • Method and device for determining coding mode
  • Method and device for determining coding mode

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Embodiment Construction

[0033] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with one or more embodiments of this specification. Rather, they are merely examples of apparatus and methods consistent with some aspects of one or more embodiments of this specification, as recited in the appended claims.

[0034] It should be noted that: in other embodiments, the steps of the corresponding methods are not necessarily performed in the order shown and described in this specification. In some other embodiments, the method may include more or fewer steps than described in this specification. In addition, a single step described in this specification ...

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Abstract

One or more embodiments of the invention provide a coding mode determination method and device, and the method comprises the steps: obtaining the rate distortion optimization cost RDcost of a first coding mode and the absolute transformation error and SATD of a second coding mode; obtaining an estimated coding cost of the second coding mode according to the SATD and a rate distortion influence parameter; the rate distortion influence parameter is used for representing an associated parameter of the RDcost of the second coding mode; and in response to the fact that the RDcost of the first coding mode is smaller than the estimated coding cost of a second coding mode, selecting the first coding mode as a mode used for coding a target coding unit. According to the embodiment of the invention, the encoding complexity of the encoder is reduced, the selection of the encoding mode is more accurate, and the encoding performance is improved.

Description

technical field [0001] One or more embodiments of this specification relate to the technical field of video processing, and in particular, to a method and apparatus for determining an encoding mode. Background technique [0002] In the related art, a video sequence can be encoded into a compressed stream by an encoder, and then transmitted to a decoder at the receiving end. Wherein, when the encoder encodes the video images in the video sequence, the encoding process may include: dividing the video images into non-overlapping coding units (Coding Units, CUs), and performing intra-frame coding on these CUs. Coding or inter-frame coding is performed to obtain a predicted image block, and then a prediction residual is obtained according to the predicted image block, and the predicted residual is subjected to discrete cosine transform, quantization, entropy encoding, etc., to obtain a compressed code stream. [0003] In the above encoding process, when encoding a CU, the encode...

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Application Information

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IPC IPC(8): H04N19/107H04N19/124H04N19/147H04N19/42H04N19/91
CPCH04N19/107H04N19/147H04N19/42H04N19/124H04N19/91
Inventor 董鑫超方树清陈建华
Owner ALIBABA (CHINA) CO LTD
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