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Image information encoding and decoding method

專利號
US10091505B2
公開日期
2018-10-02
申請人
LG ELECTRONICS INC.（KR Seoul）
發(fā)明人
Seung Wook Park; Jae Hyun Lim; Jung Sun Kim; Joon Young Park; Young Hee Choi; Byeong Moon Jeon; Yong Joon Jeon
IPC分類
H04N19/117; H04N19/82; H04N19/70; H04N19/186; H04N19/176; H04N19/14; H04N19/139; H04N19/91; H04N19/13
技術領域
sao,offset,chroma,band,pixels,pixel,prediction,bands,picture,in
地域： Seoul

摘要

The present invention relates to an image information encoding and decoding method and a device for same. One embodiment of an image information encoding method according to the present invention, as an image information encoding method according to another embodiment of the present invention, includes the steps of: generating a restore block; applying a deblocking filter on the restore block; applying a Sample Adaptive Offset (SAO) on the restore block having the deblocking filter applied thereon; and transmitting information on the SAO application. During the applying of the SAO, the SAO is applied to chroma pixels, and during the transmitting of the information, in addition to information on whether the SAO is applied on the chroma pixels, at least one of area information, division information on the SAO coverage area, SAO type information, and SAO offset information is transmitted.

說明書

When the value of sao_split_flag is 1 and the region is additionally divided, the parameters sao_split_param related to luma, Cr, and/or Cb in the four divided regions may be transmitted.

Table 20 schematically shows an example of an offset parameter as a syntax structure when independent partitions are used for the luma pixels and the chroma pixels.

TABLE 20 C Descriptor sao_offset_param ( x, y, Depth, component ) { ?if( split_flag[ component ][ Depth ][ y ][ x ] ) { sao_offset_param ( x + 0, y + 0, Depth + 1, component ) sao_offset_param ( x + 1, y + 0, Depth + 1, component )

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