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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

Table 10 shows an example where the side band group is more densely divided and the band offset is applied thereto, unlike the example shown in Table 9. For example, in Table 10, the band offset is applied using the central band group including 12 bands by 16 pixel values and the side band group including 16 bands by 4 pixel values. Therefore, the offset may be applied more densely to the side bands.

Table 11 shows an example of a table related to the SAO type where more band groups are designated and the band offset is applied thereto.

TABLE 11 SAO type index Number of SAO Edge type (sao_type_idx) categories (reference) 0 0 non-applied

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