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1.发明授权
公开(公告)号：EP1012778B1
公开(公告)日：2011-06-01
申请号：EP98935565.6
申请日：1998-07-09
申请人： MediaTek Inc.
发明人： CHIANG, Tihao , LEE, Hung-Ju , ZHANG, Ya-Qin
IPC分类号： G06K9/00
CPC分类号： H04N19/198 , H04N19/115 , H04N19/126 , H04N19/137 , H04N19/146 , H04N19/147 , H04N19/152 , H04N19/172 , H04N19/176 , H04N19/196 , H04N19/61
摘要： A method and apparatus for selecting a quantizer scale for each macroblock within a frame to optimize the coding rate is presented (130). A quantizer scale is selected for each macroblock (120) within each frame such that the target bit rate for the frame is achieved while maintaining a uniform visual quality over the entire frame.
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2.发明授权METHOD AND APPARATUS FOR PERFORMING HIERARCHICAL MOTION ESTIMATION USING NONLINEAR PYRAMID 失效方法和装置用于进行分层运动估计使用非线性金字塔
公开(公告)号：EP1138152B8
公开(公告)日：2007-02-14
申请号：EP98924990.9
申请日：1998-05-29
申请人： MediaTek Inc.
发明人： SONG, Xudong , ZHANG, Ya-Qin , CHIANG, Tihao
摘要： An apparatus and a concomitant method for encoding image sequences and, more particularly, to a method for reducing the computational complexity in determining motion vectors for block-based motion estimation (140) and for enhancing the accuracy of motion estimates through the use of non-linear pyramids (122) is disclosed.
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公开(公告)号：EP1078531B1
公开(公告)日：2006-01-11
申请号：EP99916382.7
申请日：1999-04-05
申请人： Mediatek Inc.
发明人： SETHURAMAN, Sriram , CHIANG, Tihao , SONG, Xudong , KRISHNAMURTHY, Ravi , HATRACK, Paul , ZHANG, Ya-Qin
CPC分类号： H04N19/53 , H04N19/107 , H04N19/114 , H04N19/115 , H04N19/13 , H04N19/14 , H04N19/146 , H04N19/147 , H04N19/152 , H04N19/172 , H04N19/176 , H04N19/177 , H04N19/182 , H04N19/186 , H04N19/42 , H04N19/61 , H04N19/91
摘要： A method and apparatus for encoding, illustratively, a video information stream to produce an encoded information stream according to a group of frames (GOF) information structure where the GOF structure and, optionally, a bit budget are modified in response to, respectively, information discontinuities and the presence of redundant information in the video information stream (due to, e.g., 3:2 pull-down processing).
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4.发明授权APPARATUS AND METHOD FOR OPTIMIZING THE RATE CONTROL IN A CODING SYSTEM 失效装置和方法以优化BITRATENSTEURUNG在编码
公开(公告)号：EP0960532B1
公开(公告)日：2007-01-31
申请号：EP98908531.1
申请日：1998-02-11
申请人： MediaTek Inc.
发明人： CHIANG, Tihao , ZHANG, Ya-Qin
CPC分类号： H04N19/587 , H04N19/10 , H04N19/115 , H04N19/124 , H04N19/129 , H04N19/132 , H04N19/146 , H04N19/147 , H04N19/152 , H04N19/154 , H04N19/172 , H04N19/186 , H04N19/196 , H04N19/61 , H04N19/63
摘要： A method and apparatus (100, 300) for selecting a quantizer scale for each frame to optimize the coding rate is disclosed. A quantizer scale is selected for each frame such that the target bit rate for the frame is achieved while maintaining a uniform visual quality over an entire sequence of frames.
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5.发明授权METHOD AND APPARATUS FOR PERFORMING HIERARCHICAL MOTION ESTIMATION USING NONLINEAR PYRAMID 失效方法和装置用于进行分层运动估计使用非线性金字塔
公开(公告)号：EP1138152B1
公开(公告)日：2006-12-20
申请号：EP98924990.9
申请日：1998-05-29
申请人： Mediatek Inc.
发明人： SONG, Xudong , ZHANG, Ya-Qin , CHIANG, Tihao
摘要： An apparatus and a concomitant method for encoding image sequences and, more particularly, to a method for reducing the computational complexity in determining motion vectors for block-based motion estimation (140) and for enhancing the accuracy of motion estimates through the use of non-linear pyramids (122) is disclosed.
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