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公开(公告)号:US5467135A
公开(公告)日:1995-11-14
申请号:US199630
申请日:1994-02-22
CPC分类号: H04N7/54 , H04N19/527 , H04N19/59 , H04N19/85 , H04N19/30
摘要: A method of coding image data with coefficients between fields by increasing the coefficients prior to coding comprising the steps of: (1) detecting a motion vector in a reference field to a sample field to check whether the reference field is zoomed in or out relative to the sample field, data of the reference field being coded based on the sample field; (2) zooming out the reference field when the reference field is zoomed in relative to the sample field, and zooming in the reference field when the reference field is zoomed out relative to the sample field according to the motion vector; and (3) coding the reference field after the reference field has been zoomed according to the motion vector in the second step. In the second step, the reference field may be zoomed out by eliminating pixels that are not adjacent in one of a vertical direction and a horizontal direction.
摘要翻译: 一种通过增加编码之前的系数来对字段之间的系数进行编码的图像数据的方法,包括以下步骤:(1)检测参考字段中的运动矢量到样本字段,以检查参考字段是否相对于 样本场,参考场的数据根据样本场进行编码; (2)当参考场相对于采样场放大时缩小参考场,并且当参考场相对于采样场根据运动矢量放大时放大参考场; 以及(3)在第二步骤中根据运动矢量对参考场进行缩放之后对参考场进行编码。 在第二步骤中,可以通过去除在垂直方向和水平方向之一中不相邻的像素来缩小参考场。