- 专利标题: Image encoding method, image encoding device, image decoding method, and image decoding device
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申请号: US13988819申请日: 2012-01-16
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公开(公告)号: US09781415B2公开(公告)日: 2017-10-03
- 发明人: Tomokazu Murakami , Toru Yokoyama
- 申请人: Tomokazu Murakami , Toru Yokoyama
- 申请人地址: JP Osaka
- 专利权人: Hitachi Maxell, Ltd.
- 当前专利权人: Hitachi Maxell, Ltd.
- 当前专利权人地址: JP Osaka
- 代理机构: Mattingly & Malur, PC
- 优先权: JP2011-007429 20110118
- 国际申请: PCT/JP2012/000193 WO 20120116
- 国际公布: WO2012/098845 WO 20120726
- 主分类号: H04N19/46
- IPC分类号: H04N19/46 ; H04N19/51 ; H04N19/56 ; H04N19/52
摘要:
For the purpose of providing an image encoding technique for reducing the amount of codes, in inter prediction in which motion search is performed by using a block obtained by dividing an input image and a reference image, the motion vector of the block is predicted by selecting from the motion vectors of the surrounding blocks. Further, in the method of calculating a differential vector and then performing encoding, the number or positions of candidate blocks from which a prediction vector is selected are changed block by block or frame by frame and thereby adaptive and efficient video image compression is performed.