- 专利标题： Method of block vector prediction for intra block copy mode coding
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申请号： US15307445申请日： 2015-05-05
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公开(公告)号： US10666968B2公开(公告)日： 2020-05-26
- 发明人: Xiaozhong Xu , Shan Liu , Tzu-Der Chuang
- 申请人： HFI Innovation Inc.
- 申请人地址： TW Zhubei, Hsinchu County
- 专利权人： HFI Innovation Inc.
- 当前专利权人： HFI Innovation Inc.
- 当前专利权人地址： TW Zhubei, Hsinchu County
- 代理机构： Oblon, McClelland, Maier & Neustadt, L.L.P.
- 国际申请： PCT/CN2015/078250 WO 20150505
- 国际公布： WO2015/169200 WO 20151112
- 主分类号： H04N19/52
- IPC分类号： H04N19/52 ; H04N19/593 ; H04N19/176
摘要：
A method of block vector (BV) prediction for an IntraBC mode (Intra-block copy mode) coded block in a video coding system according to the present invention is disclosed. Multiple BV candidate lists are derived from neighboring blocks of the current block. A BV candidate list is selected as a BV predictor for the BV of the current block. The current block is coded based on an Intra reference block located according to the BV of the current block. In one embodiment, a left-bottom (LB) block of the current block is used to derive the first BV candidate list and an above-right (AR) block of the current block is used to derive the second BV candidate list. A 1-bit index code is signaled to select a BV predictor between the first BV candidate list and the second BV candidate list.