Method and device for determining image compensation modes

A technology of image compensation and mode, applied in the field of communication, can solve problems such as large amount of calculation, restricting the encoding speed of the encoder, etc.

Active Publication Date: 2014-12-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In each EO mode, it is necessary to perform statistical calculations on all pixel blocks in the LCU, traversing all 4 EO modes, the amount of calculation is quite large, which greatly restricts the encoding speed of the encoder

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  • Method and device for determining image compensation modes
  • Method and device for determining image compensation modes

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Embodiment Construction

[0076] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0077] Embodiment 1 of the present invention provides a method for determining an image compensation mode, which is used for edge compensation (Edge Offset, EO) of adaptive sample point compensation (Sample Adaptive Offset, SAO) in High Efficiency Video Coding (HEVC). ) mode selection. The subject of execution of the method may specifically be an encoder. The main purpose of SAO is to reduce the distortion between the source image and the reconstructed image. Although the use of SAO will increase the coding of SAO-rela...

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Abstract

An embodiment of the invention discloses a method and a device for determining image compensation modes. The method includes acquiring texture features of a plurality of pixel blocks of current to-be-processed pixel units from current video frames; screening edge compensation modes for the current to-be-processed pixel units among candidate edge compensation modes according to the texture features of the multiple pixel blocks to obtain the optimal edge compensation modes for the current to-be-processed pixel units.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for determining an image compensation mode. Background technique [0002] High Efficiency Video Coding (HEVC) is a new generation of video compression standards, mainly for high-definition and ultra-high-definition video images, and its core goal is to achieve high-resolution / high-definition video on the basis of H.264 / AVC high profile. The real video image compression efficiency is doubled, that is, the bit rate of the video stream is reduced by 50% under the premise of ensuring the same video image quality. The adaptive sample point compensation (Sample Adaptive Offset, SAO) in the encoder is an adaptive selection process, which is carried out after deblocking (Deblocking, DB) filtering, and classification statistical decision is made through the reconstructed image and pixel value after DB filtering, Then add a corresponding compensation off...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/102H04N19/176H04N19/146H04N19/147
Inventor 李健赖昌材王铭学
Owner HUAWEI TECH CO LTD
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