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31. 发明授权

US5699122A Method and apparatus for encoding a video signal by using a modified block truncation coding method 失效
标题翻译：通过使用修改的块截断编码方法对视频信号进行编码的方法和装置
公开(公告)号：US5699122A
公开(公告)日：1997-12-16
申请号：US617587
申请日：1996-03-19
申请人： Hae-Mook Jung
发明人： Hae-Mook Jung
IPC分类号： H04N19/90 , G06T9/00 , H03M7/30 , H04N1/41 , H04N7/24 , H04N19/00 , H04N7/12
CPC分类号： G06T9/005 , H04N19/13 , H04N19/60 , H04N19/91
摘要： A video signal is encoded to provide a coded video signal, wherein a frame of the video signal is divided into a multiplicity of nonoverlapping blocks and each of the blocks contains K.times.L pixels, K and L being positive integers, by the steps of: dividing K.times.L pixels included in a block into a bright group and a dark group based on intensity values of the pixels; deciding a bit plane which contains K.times.L binary pixels, each of the binary pixels denoting either the bright or the dark group where a corresponding pixel in the block belongs to; dividing the bit plane to N subblocks each of which contains M binary pixels; deciding N majority values each of which represents a more frequently occurring binary pixel value for each of the N subblocks, and for providing a modified bit plane which contains the N majority values as its N binary pixel values; providing a restored bit plane which consists of N subblocks each of which contains M binary pixels having a value corresponds to one of the N majority values; determining a sample mean and a sample variance of the block; determining two reconstruction values which denote a representative intensity value of the pixels included in the bright or the dark group; and combining the two reconstruction values, and the modified bit plane, to thereby provide a block of the coded video signal.
摘要翻译：编码视频信号以提供编码视频信号，其中视频信号的帧被划分为多个非重叠块，并且每个块包含K×L个像素，K和L为正整数，步骤为：将KxL 基于像素的强度值将包括在块中的像素组成亮组和暗组; 决定包含KxL二进制像素的位平面，每个二进制像素表示块中相应像素所属的亮组或暗组; 将位平面除以N个子块，每个子块包含M个二进制像素; 决定N个多数值，其中每个N个表示N个子块中的每一个的更频繁出现的二进制像素值，并且用于提供包含N个多数值作为其N个二进制像素值的修改的位平面; 提供恢复的位平面，其由N个子块组成，每个子块包含具有对应于N个多数值中的一个的M个二进制像素; 确定块的样本均值和样本方差; 确定表示亮组或暗组中包括的像素的代表性强度值的两个重建值; 并且将两个重建值和修改的位平面组合，从而提供编码视频信号的块。

32. 发明授权

US5689306A Method and apparatus for encoding a video signal using pixel-by-pixel motion prediction 失效
标题翻译：使用逐像素运动预测编码视频信号的方法和装置
公开(公告)号：US5689306A
公开(公告)日：1997-11-18
申请号：US393296
申请日：1995-02-23
申请人： Hae-Mook Jung
发明人： Hae-Mook Jung
IPC分类号： G06T9/00 , H04N7/26 , H04N7/32
CPC分类号： H04N19/54 , H04N19/20
摘要： An apparatus for determining a preducted current frame based on a current frame and a previous frames comprises: a unit for selecting a number of pixels from the pixels contained in the previous frame to detect a first set of motion vectors; a unit for producing a second set of motion vectors for all of the pixels contained in the current frame by using first set of motion vectors; a unit for assigning the value of each of the pixels in the previous frame as the value of one of the pixels in the current frame by using the second set of motion vectors, to determine a preliminary preducted current frame; a unit for finding the difference between the current frame and the preliminary preducted current frame to detect collective error regions; a unit for selecting one pixel amount the pixels contained in each of the collective error regions; a unit for detecting a third set of motion vectors for the selected pixels from the collective error regions; a unit for producing a fourth set of motion vectors for all of the pixels contained in the current frame by using the first set of motion vectors and the third set of motion vectors; and a unit for assigning the value of each of the pixels in the previous frame through one of the fourth set of motion vectors, as the value of one of the pixels in the current frame.
摘要翻译：一种用于基于当前帧和先前帧确定预估当前帧的装置包括：用于从包含在前一帧中的像素中选择像素数目以检测第一组运动矢量的单元; 用于通过使用第一组运动矢量来产生包含在当前帧中的所有像素的第二组运动矢量的单元; 用于通过使用第二组运动矢量将前一帧中的每个像素的值分配为当前帧中的一个像素的值的单元，以确定初步推导的当前帧; 用于找出当前帧与初步预制当前帧之间的差异以检测集合误差区域的单元; 用于选择一个像素量的单元，包含在每个集合误差区域中的像素; 用于从所述集合误差区域检测所选择的像素的第三组运动矢量的单元; 用于通过使用第一组运动矢量和第三组运动矢量来产生用于包含在当前帧中的所有像素的第四组运动矢量的单元; 以及用于通过第四组运动矢量之一将前一帧中的每个像素的值分配为当前帧中的一个像素的值的单元。

33. 发明授权

US5614954A Motion compensation apparatus for use in an image encoding system 失效
标题翻译：用于图像编码系统的运动补偿装置
公开(公告)号：US5614954A
公开(公告)日：1997-03-25
申请号：US433273
申请日：1995-05-02
申请人： Hae-Mook Jung
发明人： Hae-Mook Jung
IPC分类号： H04N19/50 , G06T9/00 , H04N19/105 , H04N19/134 , H04N19/137 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/423 , H04N19/503 , H04N19/51 , H04N19/533 , H04N19/57 , H04N19/577 , H04N19/61 , H04N19/625 , H04N19/85 , H04N19/91 , H04N19/93 , H04N7/36
CPC分类号： H04N19/119 , G06T9/008 , H04N19/51 , H04N19/577
摘要： An apparatus for improving image quality comprising a converter for converting the B frame into a converted frame having a second set of search blocks wherein both the B frame and the converted frame have an overlapping region; a first predictor for estimating a first displacement vector representing the displacement between the B frame and a first neighboring frame of the B frame, and for providing a first predicted frame signal for the B frame based on the first estimated displacement vector; a second predictor for estimating a second displacement vector representing the displacement between the converted frame and a second neighboring frame of the converted frame, and for providing a second predicted frame signal for the converted frame based on the second estimated displacement vector; a third predictor for generating a third predicted frame signal by averaging the first and the second predicted frame signals located in an area corresponding to the overlapping region; and a circuit, responsive to selection signals corresponding to the frame types of the first and the third predicted frame signals, for selectively generating either the first predicted frame signal or the third predicted frame signal.
摘要翻译：一种用于提高图像质量的装置，包括用于将B帧转换成具有第二组搜索块的转换帧的转换器，其中B帧和转换帧都具有重叠区域; 第一预测器，用于估计表示所述B帧与所述B帧的第一相邻帧之间的位移的第一位移矢量，以及用于基于所述第一估计位移向量为所述B帧提供第一预测帧信号; 第二预测器，用于估计表示经转换的帧的转换帧和第二相邻帧之间的位移的第二位移矢量，并且用于基于第二估计位移矢量提供用于转换的帧的第二预测帧信号; 第三预测器，用于通过对位于与重叠区域相对应的区域中的第一和第二预测帧信号进行平均来产生第三预测帧信号; 以及响应于与第一和第三预测帧信号的帧类型对应的选择信号的电路，用于选择性地产生第一预测帧信号或第三预测帧信号。

34. 发明授权

US5583580A Method and apparatus for detecting motion vectors based on hierarchical motion estimation 失效
公开(公告)号：US5583580A
公开(公告)日：1996-12-10
申请号：US529476
申请日：1995-09-18
申请人： Hae-Mook Jung
发明人： Hae-Mook Jung
IPC分类号： H04N7/32 , G06T13/00 , G06T13/80 , H04N7/26
CPC分类号： H04N19/53
摘要： Motion vectors are determined between a current frame and a preceding frame within a frame duration by employing a time-sharing multi-tier hierarchical motion estimation approach, wherein the candidate blocks being grouped into a multiple number of hierarchical search areas. The motion vector determination scheme is initiated by performing a motion estimation of a highest hierarchy for all of the search blocks; and an error function and a motion vector of the highest hierarchy are stored. Subsequently, motion-estimation of a lower hierarchy is performed for each of the selected search blocks which have the error functions greater than the threshold value of the highest hierarchy. In the next step, the error functions of the highest and the lower hierarchies are compared for each of the selected search blocks and a smaller error function is selected therefrom to thereby update each of the stored potential motion vectors with the motion vector corresponding to the selected error function. The updating process is repeated for the next hierarchies and the stored potential motion vectors are provided as the motion vectors of the current frame when updating process for the stored potential motion vector for a predetermined lowest hierarchy is accomplished or the frame duration is exhausted.

35. 发明授权

US5561475A Variable block matching motion estimation apparatus 失效
标题翻译：可变块匹配运动估计装置
公开(公告)号：US5561475A
公开(公告)日：1996-10-01
申请号：US367522
申请日：1994-12-30
申请人： Hae-Mook Jung
发明人： Hae-Mook Jung
IPC分类号： H04N11/04 , H04N7/26 , H04N7/32 , H04N7/28
CPC分类号： H04N19/51
摘要： An apparatus for detecting motion vectors between a current frame and a previous frame of video signals based on a block matching motion estimation approach comprises a variable block formation section for defining a variable search block from the current frame, the variable search block is extended from a selected search block which is a plain picture block without having an edge of an object within the current frame; and a motion-estimation section for estimating the variable search block with respect to each of candidate blocks included in the previous frame to provide a number motion vector and an error function corresponding thereto, the motion vector representing the displacement of pixels between the search block and a candidate block which yield a minimum error function.
摘要翻译：一种用于基于块匹配运动估计方法来检测当前帧和前一帧视频信号之间的运动矢量的装置，包括：可变块形成部分，用于从当前帧定义可变搜索块，所述变量搜索块从选择的搜索块，其是在当前帧内没有对象的边缘的平滑图像块; 以及运动估计部分，用于针对包括在前一帧中的每个候选块来估计可变搜索块以提供数量运动矢量和与其对应的误差函数，所述运动矢量表示搜索块和产生最小误差函数的候选块。

36. 发明授权

US5502492A Motion vector detection apparatus 失效
标题翻译：运动矢量检测装置
公开(公告)号：US5502492A
公开(公告)日：1996-03-26
申请号：US225223
申请日：1994-04-08
申请人： Hae-Mook Jung
发明人： Hae-Mook Jung
IPC分类号： H04N7/32 , G06T7/20 , G06T9/00 , H04N5/14 , H04N7/26 , H04N7/36
CPC分类号： G06T7/2013 , H04N19/51 , H04N19/527 , H04N5/145 , G06T2207/10016
摘要： An apparatus for determining motion vectors between a current frame and a previous frame of digital video signals apparatus comprises a subblock motion vector detector for detecting a subblock motion vector for each of the subblocks included in a panning block within the current frame; a panning vector detector for detecting a panning vector for the panning block; a motion vector determination circuit for determining whether the previous frame is motion compensated by the panning vector to produce a control signal; and in response to the control signal, selecting the subblock motion vector from the subblock motion vector detector or the panning vector from the panning vector detector as an output of the motion vector detecting apparatus.
摘要翻译：一种用于确定当前帧和数字视频信号装置的先前帧之间的运动矢量的装置包括：子块运动矢量检测器，用于检测包括在当前帧内的平移块中的每个子块的子块运动矢量; 用于检测平移块的摇摄矢量的摇摄矢量检测器; 运动矢量确定电路，用于确定先前帧是否由平移矢量进行运动补偿以产生控制信号; 并且响应于控制信号，从作为运动矢量检测装置的输出的来自摇摄矢量检测器的子块运动矢量检测器或平移矢量中选择子块运动矢量。

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