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Methods and apparatuses of video encoding or decoding with adaptive quantization of video data

A technology of video codec and video data, applied in the field of video data processing methods and devices, capable of solving the problem of consuming multiple bits

Active Publication Date: 2020-10-02
HFI INNOVATION INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In general, for lower QP values, the quality of the encoded video is higher, but consumes more bits

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  • Methods and apparatuses of video encoding or decoding with adaptive quantization of video data
  • Methods and apparatuses of video encoding or decoding with adaptive quantization of video data
  • Methods and apparatuses of video encoding or decoding with adaptive quantization of video data

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Embodiment Construction

[0024] It is easily understood that the components of the present invention as generally described and illustrated in the drawings herein can be arranged and designed in various different configurations. Therefore, as shown in the drawings, the following more detailed description of the embodiments of the system and method of the present invention is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Reference throughout this specification to "embodiments," "some embodiments," or similar language means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. Therefore, the phrases "in an embodiment" or "in some embodiments" appearing in various places throughout this specification do not necessarily refer to the same embodiment, and these embodiments can be implemented alone or in combination with on...

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Abstract

Video encoding or decoding methods and apparatuses for processing video data with color components comprise receiving video data, performing inter prediction and intra prediction, determining a luma Quantization Parameter (QP), deriving a chroma QP bias, calculating a chroma QP from the chroma QP bias and the luma QP, performing transform or inverse transform, and performing quantization or inverse quantization for the luma component utilizing the luma QP and for the chroma component utilizing the chroma QP. The chroma QP bias is derived from an intermediate QP index, and the intermediate QP index is computed by clipping a sum of the luma QP and a chroma QP offset parameter to a specified range. The bits allocated to code the luma and chroma components may be adaptively controlled by restricting the chroma QP bias.

Description

[0001] 【cross reference】 [0002] This application requires the U.S. provisional application number 62 / 624,869 and the name "Methods andapparatus for adaptive quantization of video data" filed in 2018.2.1 and the U.S. provisional application number 62 / 624,865 filed in the 2018.2.1 The priority of the US provisional application for "Methods and apparatus for quantization of video data", the entire contents of which are also cited here. 【Technical Field】 [0003] The present invention relates to a video encoding or decoding method and device with adaptive quantization of video data. In particular, the present invention relates to a video data processing method and device, which use adaptive chrominance quantization parameters derived from associated luminance quantization parameters to encode or decode video data. 【Background technique】 [0004] The High Efficiency Video Codec (HEVC) standard is the latest video codec standard developed by the Joint Collaborative Team on Video (JCT-V...

Claims

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Application Information

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IPC IPC(8): H04N19/186H04N19/70H04N19/124
CPCH04N19/124H04N19/159H04N19/30H04N19/186H04N19/60H04N19/70
Inventor 向时达
Owner HFI INNOVATION INC