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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(shù)領(lǐng)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

1 4 1D 0-degree edge 2 4 1D 90-degree edge 3 4 1D 135-degree edge 4 4 1D 45-degree edge 5 8 First band 6 8 Second band 7 8 Third band 8 8 Fourth band

In the example shown in Table 11, each band group includes 8 bands by 8 pixel values. The band groups may be sequentially grouped from the left of the total bands as illustrated in FIG. 6.

In Table 7, the SAO type to be applied to the current pixel out of the SAO types shown in Tables 8 to 11 may be indicated by sao_type_idx. With reference to Table 7 and Tables 8 to 11, when the value of sao_type_idx is equal to or greater than 5, the band offset is applied.

Table 12 schematically shows another example of the syntax sao_offset_param related to an offset out of the SAO parameters as a syntax structure for applying the SAO.

權(quán)利要求

1
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