Direction selection method and device of conversion mode, electronic equipment and storage medium

A direction selection and mode technology, which is applied in electrical components, digital video signal modification, image communication and other directions, can solve the problems of rate distortion and high complexity of direction selection in conversion mode, achieve low complexity, high solution complexity, The effect of reducing complexity

Pending Publication Date: 2022-04-12
SHENZHEN AIXIESHENG TECH CO LTD
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Problems solved by technology

[0004] However, the calculation of the rate-distortion cost value is required for all prediction directions, resulting in high complexity in the direction selection of the transformation mode

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  • Direction selection method and device of conversion mode, electronic equipment and storage medium
  • Direction selection method and device of conversion mode, electronic equipment and storage medium
  • Direction selection method and device of conversion mode, electronic equipment and storage medium

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[0049] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0050] It can be understood that the terms "first", "second" and the like used in this application may be used to describe various elements herein, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first client could be termed a second client, and, similarly, a second client could be termed a first client, without departing from the scope of the present application. Both the first client and the second client are clients, but they are not the same client.

[0051] refer to figure ...

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Abstract

The invention relates to a direction selection method and device for a transformation mode, electronic equipment and a storage medium, and the method comprises the steps: sequentially calculating direction evaluation parameters of each prediction direction according to the calculation sequence of each prediction direction of a current coding block in the transformation mode in a display stream compression coding process, stopping calculation of the remaining prediction directions until the direction evaluation parameters meet preset requirements; and selecting one of the calculated prediction directions as a target direction for transformation of the current coding block. By adopting the method, the complexity of direction selection of the conversion mode can be reduced.

Description

technical field [0001] The present application relates to the technical field of display stream compression, and in particular to a method, device, electronic device and storage medium for direction selection of transformation modes. Background technique [0002] In order to achieve low-cost, visually lossless and high-efficiency video compression in the display link, many advanced compression coding tools are used in VDC-M, such as Transform Mode (Transform Mode, TM), which uses adjacent coded pixel pairs of coding blocks to Coded blocks are predicted to remove spatial information redundancy. [0003] In VDC-M, in order to obtain the optimal prediction pixel, when the coding block is in the transformation mode, it is necessary to calculate the rate-distortion cost value of one non-directional prediction (mean prediction) and seven directional predictions in the transformation mode, and then select The prediction direction with the smallest rate-distortion cost value is tak...

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Application Information

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IPC IPC(8): H04N19/176H04N19/147H04N19/60
Inventor 黄海鸥胡小江梁丕树李江城
Owner SHENZHEN AIXIESHENG TECH CO LTD
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