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    • 3. 发明授权
    • Motion dependent video signal processing
    • 运动相关视频信号处理
    • US5027205A
    • 1991-06-25
    • US512381
    • 1990-04-20
    • Richard J. A. AvisClive H. GillardRaphael Samad
    • Richard J. A. AvisClive H. GillardRaphael Samad
    • G06T7/20H04N7/01
    • G06T7/202H04N7/0125H04N7/014G06T2207/10016
    • In, for example, a motion compensated video standards converter wherein blocks in a first field or frame of a video signal are each compared with a plurality of blocks in the following succeeding field or frame of the video signal for deriving motion vectors representing the motion of the content of respective blocks between the first field or frame and the following field or frame, and wherein a respective correlation surface is generated for blocks in the first field or frame, the correlation surface representing the difference between the content of the block in the first field or frame and the content of each block in the following field or frame with which it has been compared, the shape of that part of the correlation surface which represents differences less than a threshold level is determined, and the comparison is varied in dependence on the shape.
    • 例如,在运动补偿视频标准转换器中,其中视频信号的第一场或帧中的块与视频信号的随后的后续场或帧中的多个块进行比较,用于导出表示运动的运动矢量 在第一场或帧之间的各个块与随后的场或帧之间的各个块的内容,并且其中为第一场或帧中的块生成相应的相关表面,相关表面表示第一场或帧中的块的内容之间的差异 字段或帧以及与已经被比较的后续字段或帧中的每个块的内容,确定表示小于阈值水平的差的相关表面的该部分的形状(21,28,33,37, 38),并且比较根据形状而变化。
    • 4. 发明授权
    • Motion dependent video signal processing
    • 运动相关视频信号处理
    • US5027203A
    • 1991-06-25
    • US512263
    • 1990-04-20
    • Raphael SamadJohn W. RichardsClive H. Gillard
    • Raphael SamadJohn W. RichardsClive H. Gillard
    • G06T7/20H04N7/01
    • G06T7/202H04N7/0125H04N7/014G06T2207/10016
    • In, for example, a motion compensated video standards converter wherein blocks in a first field or frame of a video signal are each compared with a plurality of blocks in the following field or frame of the video signal for deriving motion vectors representing the motion of the content of respective blocks between the first field or frame and the following field or frame, further motion vectors are selected for assignment to those of the blocks for which less than a predetermined plurality of good motion vectors are derived as a result of the comparison, by ranking all the good, non-stationary motion vectors derived for the field or frame in order of frequency of occurrence, and selecting those motion vectors which occur most frequently, unless they fall within a predetermined window of pixel motion of a motion vector already selected.
    • 例如,在运动补偿视频标准转换器中,其中视频信号的第一场或帧中的块都与视频信号的后续场或帧中的多个块进行比较,以得出表示运动的运动矢量 选择第一场或帧与下一场或帧之间的各个块的内容,选择另外的运动矢量(20,27,30),用于分配给小于预定多个良好运动矢量的块的那些 通过比较的结果,通过按照发生频率的顺序排列为场或帧导出的所有良好的非平稳运动矢量,以及选择出现频率最高的运动矢量,除非它们落在像素运动的预定窗口内 已经选择的运动矢量。
    • 6. 发明授权
    • Motion dependent video signal processing
    • 运动相关视频信号处理
    • US4992869A
    • 1991-02-12
    • US511799
    • 1990-04-20
    • Raphael SamadJohn W. Richards
    • Raphael SamadJohn W. Richards
    • H04N7/32G06T7/20H04N7/01
    • G06T7/202H04N7/0125H04N7/014G06T2207/10016
    • In, for example, a motion compensated video standards converter blocks in a first field or frame of a video signal are each compared with a plurality of blocks in the following field or frame of the video signal for deriving motion vectors representing the motion of the content of respective blocks between the first field or frame and the following field or frame, a correlation surface is generated for respective blocks in the first field or frame, the correlation surface representing the difference between the content of the block in the first field or frame and the content of each block in the following field or frame with which it has been compared, the correlation surface is tested for a clear minimum, the size of the blocks is increased to generate new correlation surfaces, each new correlation surface is tested for a clear minimum, and motion vectors are derived in dependence on the clearest minimum so found.
    • 例如,在视频信号的第一场或帧中的运动补偿视频标准转换器(图1)中的块被分别与视频信号的后续字段或帧中的多个块进行比较,用于导出运动 表示第一场或帧与随后场或帧之间的各个块的内容的运动的向量,对于第一场或帧中的各个块生成相关表面(3),相关表面表示内容 在第一场或帧中的块的块和与已经被比较的以下场或帧中的每个块的内容相关表面被测试(21,22,23)以获得明确的最小值,块的大小 增加(20)以产生新的相关表面,每个新的相关表面被测试(21,22,23)以获得明确的最小值,并且根据所找到的最清晰的最小值导出运动矢量(27)。