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Image information encoding and decoding method

專利號(hào)
US10091505B2
公開日期
2018-10-02
申請(qǐng)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(shuō)明書

Table 16 shows an example of an SAO type index table when the categories for the edge offsets are merged as shown in Table 15 and the number of bands for applying the band offset is set as illustrated in FIG. 12.

TABLE 16 SAO type index Number of SAO Edge type Sao_type_idx categories (reference) 0 0 non-applied 1 2 1D 0-degree edge 2 2 1D 90-degree edge 3 2 1D 135-degree edge 4 2

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