Invention Grant
US09300961B2 Motion vector calculation method, picture coding method, picture decoding method, motion vector calculation apparatus, and picture coding and decoding apparatus
有权
运动矢量计算方法，图像编码方法，图像解码方法，运动矢量计算装置和图像编码解码装置
- Patent Title: Motion vector calculation method, picture coding method, picture decoding method, motion vector calculation apparatus, and picture coding and decoding apparatus
- Patent Title (中): 运动矢量计算方法，图像编码方法，图像解码方法，运动矢量计算装置和图像编码解码装置
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Application No.: US13814564Application Date: 2011-11-22
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Publication No.: US09300961B2Publication Date: 2016-03-29
- Inventor: Toshiyasu Sugio , Takahiro Nishi , Youji Shibahara , Hisao Sasai
- Applicant: Toshiyasu Sugio , Takahiro Nishi , Youji Shibahara , Hisao Sasai
- Applicant Address: US CA Torrance
- Assignee: Panasonic Intellectual Property Corporation of America
- Current Assignee: Panasonic Intellectual Property Corporation of America
- Current Assignee Address: US CA Torrance
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- International Application: PCT/JP2011/006517 WO 20111122
- International Announcement: WO2012/070235 WO 20120531
- Main IPC: H04N7/26
- IPC: H04N7/26 ; H04N7/28 ; H04N19/51 ; H04N19/105 ; H04N19/52 ; H04N19/159 ; H04N19/176
Abstract:
A motion vector calculation method which attains a higher compression rate, includes: a selection step of selecting one of at least one reference motion vector of a reference block; and a calculation step of calculating a motion vector of a current block to be processed, using the one reference motion vector selected in the selection step, and in the selection step, when the reference block has two reference motion vectors, one of the two reference motion vectors is selected based on whether the reference block is located before or after the current block in display time order, and when the reference block has only one reference motion vector, the one reference motion vector is selected.
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