公开(公告)号：US20070025442A1

公开(公告)日：2007-02-01

申请号：US11494619

申请日：2006-07-28

申请人： Shigeyuki Okada ,  Yuh Matsuda ,  Hideki Yamauchi ,  Yasuo Ishii ,  Mitsuru Suzuki ,  Shinichiro Okada

发明人： Shigeyuki Okada ,  Yuh Matsuda ,  Hideki Yamauchi ,  Yasuo Ishii ,  Mitsuru Suzuki ,  Shinichiro Okada

IPC分类号： H04N11/04 ,  H04N11/02

CPC分类号： H04N19/615 ,  H04N19/124 ,  H04N19/13 ,  H04N19/139 ,  H04N19/52 ,  H04N19/523 ,  H04N19/527 ,  H04N19/61 ,  H04N19/63

摘要： A region setting unit 64 sets multiple global regions in a frame image. A bit number adjustment unit 62 adjusts the number of bits of the local motion vectors LMV which are to be obtained for each global region. A local motion vector detection unit 66 detects the local motion vectors LMV with the number of bits adjusted by the bit number adjustment unit 62 in units of macro blocks for each global region. A global motion vector calculation unit 68 calculates the global motion vector GMV which represents the global motion for each global region. A local motion vector difference coding unit 72 calculates the difference ΔLMV, which is the difference between each local motion vector LMV and the global motion vector GMV, for each global region, and performs coding thereof.

摘要翻译： 区域设置单元64在帧图像中设置多个全局区域。 位数调整单元62调整要为每个全局区域获得的局部运动矢量LMV的位数。 局部运动矢量检测单元66以每个全局区域的宏块为单位，以位数调整单元62调整的位数来检测局部运动矢量LMV。 全局运动矢量计算单元68计算表示每个全局区域的全局运动的全局运动矢量GMV。 局部运动矢量差分编码单元72针对每个全局区域计算每个局部运动矢量LMV和全局运动矢量GMV之间的差值DeltaLMV，并进行编码。

公开(公告)号：US20050226333A1

公开(公告)日：2005-10-13

申请号：US11074728

申请日：2005-03-09

申请人： Mitsuru Suzuki ,  Shigeyuki Okada ,  Hideki Yamauchi

发明人： Mitsuru Suzuki ,  Shigeyuki Okada ,  Hideki Yamauchi

IPC分类号： H04N19/50 ,  H04N5/14 ,  H04N7/12 ,  H04N19/105 ,  H04N19/134 ,  H04N19/176 ,  H04N19/189 ,  H04N19/196 ,  H04N19/436 ,  H04N19/51 ,  H04N19/56

CPC分类号： H04N19/51 ,  H04N5/145

摘要： The present invention provides a technique for reducing a period of time required for detection of a motion vector. With a method for detecting a motion vector between an input image and a reference image used for a reference of the input image, first, a two-dimensional search region having a predetermined pattern is determined, and matching is computed between a coding target block in the input image and multiple blocks represented by multiple search points included in the search region in parallel. In a case wherein the evaluated computation results exhibit optimum matching results, the motion vector is determined based upon the computation results. In a case wherein the optimum solution has not been obtained, the search region for the next matching is determined based upon the evaluation results, and search is repeated.

摘要翻译： 本发明提供了一种用于减少检测运动矢量所需的时间周期的技术。 利用用于检测用于输入图像的参考的输入图像和参考图像之间的运动矢量的方法，首先确定具有预定图案的二维搜索区域，并且计算出在 输入图像和由并行包括在搜索区域中的多个搜索点表示的多个块。 在评估计算结果呈现最佳匹配结果的情况下，基于计算结果确定运动矢量。 在未获得最佳解的情况下，根据评价结果确定下一个匹配的搜索区域，并重复搜索。

公开(公告)号：US08019000B2

公开(公告)日：2011-09-13

申请号：US11360495

申请日：2006-02-24

申请人： Mitsuru Suzuki ,  Shigeyuki Okada

发明人： Mitsuru Suzuki ,  Shigeyuki Okada

IPC分类号： H04N11/02 ,  H04N7/12 ,  G06K9/46

CPC分类号： H04N19/53 ,  G06T7/207 ,  H04N19/105 ,  H04N19/152 ,  H04N19/433

摘要： A frame memory holds a reference frame that is to be referenced for motion detection for a target block of a coding target frame in motion images. A motion compensation unit that includes a motion detecting unit and a motion compensated prediction unit. The motion detecting unit detects the motion of said target block by repeated motion estimation with reference to said reference frame stored in said frame memory, and the motion compensated prediction unit performs motion compensation processing for the target block using information on the detected motion. A coding unit that performs coding processing for the subtraction image and the information on the detected motion and thereby creates a coded stream. The motion compensation unit includes a pre-reading memory which stores pixel data beforehand, where said pixel data is part of pixel data in said reference frame, which is to be frequently referenced for motion detection, and which has been transmitted from said frame memory.

摘要翻译： 帧存储器保​​存要用于运动图像中的编码目标帧的目标块的运动检测的参考帧。 一种运动补偿单元，包括运动检测单元和运动补偿预测单元。 运动检测单元参照存储在所述帧存储器中的所述参考帧，通过重复运动估计来检测所述目标块的运动，运动补偿预测单元使用关于检测到的运动的信息来对目标块进行运动补偿处理。 对减法图像执行编码处理的编码单元和关于检测到的运动的信息，从而创建编码流。 运动补偿单元包括预读存储器，其预先存储像素数据，其中所述像素数据是所述参考帧中的像素数据的一部分，其将被频繁地用于运动检测，并且已经从所述帧存储器发送。

公开(公告)号：US20080212719A1

公开(公告)日：2008-09-04

申请号：US12073052

申请日：2008-02-28

申请人： Shigeyuki Okada ,  Mitsuru Suzuki

发明人： Shigeyuki Okada ,  Mitsuru Suzuki

IPC分类号： H04L27/06 ,  H03D1/00

CPC分类号： H04N19/57 ,  H04N19/53

摘要： A search range setting unit sets a search range to be matched with a targeted region of an image to be coded, in a reference image. A computing unit performs computation in a manner such that matching between the targeted region and a region within the search range is computed from a resolution lower than that of an original image toward the resolution of the original image over a plurality of hierarchies and the search range is narrowed. The search range setting unit sets a plurality of search ranges in the reference image in at least one of the plurality of hierarchies.

摘要翻译： 搜索范围设置单元在参考图像中设置要与要编码的图像的目标区域匹配的搜索范围。 计算单元以这样的方式执行计算，使得从目标区域和搜索范围内的区域之间的匹配是从原始图像的分辨率朝向原始图像在多个层次上的分辨率的分辨率计算的，并且搜索范围 缩小 搜索范围设置单元在多个层次中的至少一个中在参考图像中设置多个搜索范围。

公开(公告)号：US20070064808A1

公开(公告)日：2007-03-22

申请号：US11520709

申请日：2006-09-14

申请人： Yasuo Ishii ,  Mitsuru Suzuki ,  Shigeyuki Okada

发明人： Yasuo Ishii ,  Mitsuru Suzuki ,  Shigeyuki Okada

IPC分类号： H04N11/02 ,  H04N11/04

CPC分类号： H04N19/433 ,  H04N19/51 ,  H04N19/61

摘要： With the motion vector detection for the macro blocks according to the entire macro block search method, the processing is consecutively performed for a set of adjacent upper and lower macro blocks as a target macro block group. Of the reference image data held by frame memory, pixel data of a composite search region, which is the sum of two motion vector search regions corresponding to each macro blocks included in the target macro block group, is transmitted in batch to fast memory. Then, before the processing for the next target macro block group, only the pixel data of the region, which is newly selected as a part of the composite search region, is transmitted to the fast memory.

摘要翻译： 利用根据整个宏块搜索方法的宏块的运动矢量检测，对作为目标宏块组的一组相邻的上下宏块连续执行处理。 在由帧存储器保​​持的参考图像数据中，将组合搜索区域的像素数据作为与目标宏块组中包括的每个宏块相对应的两个运动矢量搜索区域的和进行批量传输到快速存储器。 然后，在对于下一个目标宏块组的处理之前，仅将新选择的作为复合搜索区域的一部分的区域的像素数据发送到快速存储器。

公开(公告)号：US20080212886A1

公开(公告)日：2008-09-04

申请号：US12073047

申请日：2008-02-28

申请人： Yasuo Ishii ,  Mitsuru Suzuki ,  Shigeyuki Okada

发明人： Yasuo Ishii ,  Mitsuru Suzuki ,  Shigeyuki Okada

IPC分类号： G06K9/36

CPC分类号： H04N19/17 ,  H04N19/105 ,  H04N19/124 ,  H04N19/152 ,  H04N19/176

摘要： A correlation evaluation unit evaluates a correction between a predetermined region in a targeted picture and a region corresponding to the region in a picture differing from the targeted picture in a temporal direction. A quantization control unit adaptively controls quantization processing for the predetermined region in the targeted picture, according to an evaluation obtained by the correlation evaluation unit. For example, when it is determined by an evaluation value obtained by the correlation evaluation unit that the correlation is weaker than a predetermined threshold value, the quantization control unit enlarges a quantization step used for quantization of the predetermined region.

摘要翻译： 相关评估单元在时间方向上评估目标图像中的预定区域和与目标图像不同的图像中的区域的区域之间的校正。 量化控制单元根据由相关评估单元获得的评估自适应地控制目标图像中的预定区域的量化处理。 例如，当由相关评估单元获得的评估值确定相关性弱于预定阈值时，量化控制单元放大用于量化预定区域的量化步长。

公开(公告)号：US20070047649A1

公开(公告)日：2007-03-01

申请号：US11511439

申请日：2006-08-29

申请人： Mitsuru Suzuki ,  Shigeyuki Okada ,  Hideki Yamauchi

发明人： Mitsuru Suzuki ,  Shigeyuki Okada ,  Hideki Yamauchi

IPC分类号： H04N11/04 ,  H04N11/02

CPC分类号： H04N19/61 ,  H04N19/52

摘要： A motion vector search unit determines a unit area of a bidirectional prediction frame for each motion vector of a backward reference frame to pass through, and stores information on the unit area to be passed into a pass area number holding unit. A reference vector prediction unit consults the pass area number holding unit to acquire the motion vector of the backward reference frame that passes a target unit area of the bidirectional prediction frame from a motion vector holding unit, and determines a reference vector to be applied to this target unit area. The motion vector search unit applies the reference vector to the target unit area of the bidirectional prediction frame, determines a forward motion vector and a backward motion vector of the target unit area by linear prediction, and makes a motion compensated prediction on the target unit area bidirectionally to generate a predicted image.

摘要翻译： 运动矢量搜索单元确定要通过的反向参考帧的每个运动矢量的双向预测帧的单位面积，并存储关于要传递到通过区域号保持单元的单位区域的信息。 参考矢量预测单元参考通过区域号保持单元，以从运动矢量保持单元获取通过双向预测帧的目标单位区域的反向参考帧的运动矢量，并且确定应用于该参考矢量预测帧的参考矢量 目标单位面积。 运动矢量搜索单元将参考矢量应用于双向预测帧的目标单位区域，通过线性预测确定目标单位区域的向前运动矢量和后向运动矢量，并对目标单位区域进行运动补偿预测 双向生成预测图像。

公开(公告)号：US20070025444A1

公开(公告)日：2007-02-01

申请号：US11494767

申请日：2006-07-28

申请人： Shigeyuki Okada ,  Hideki Yamauchi ,  Yuh Matsuda ,  Mitsuru Suzuki ,  Haruhiko Murata

发明人： Shigeyuki Okada ,  Hideki Yamauchi ,  Yuh Matsuda ,  Mitsuru Suzuki ,  Haruhiko Murata

IPC分类号： H04N11/02 ,  H04N11/04

CPC分类号： H04N19/527 ,  H04N19/114 ,  H04N19/17 ,  H04N19/174 ,  H04N19/46 ,  H04N19/52 ,  H04N19/61 ,  H04N19/70

摘要： A local motion vector detection unit 66 obtains a local motion vector LMV for each macro block in a coding target frame image. A region setting unit 64 sets multiple global regions in the frame image. A global motion vector calculation unit 68 calculates a global motion vector GMV which indicates the global motion within each global region. A local motion vector difference coding unit 72 performs coding of the difference ΔLMV which has been obtained by making the difference between each of the local motion vectors LMV within the global region and the global motion vector GMV obtained for each global region. A global motion vector difference coding unit 74 performs coding of the difference ΔGMV which has been obtained by making the difference between each of the global motion vectors GMV obtained for corresponding global region and the reference global motion vector GMVB serving as a reference.

摘要翻译： 局部运动矢量检测单元66在编码目标帧图像中获得每个宏块的局部运动矢量LMV。 区域设置单元64在帧图像中设置多个全局区域。 全局运动矢量计算单元68计算指示每个全局区域内的全局运动的全局运动矢量GMV。 局部运动矢量差分编码单元72对通过使全局区域内的每个局部运动矢量LMV与为每个全局区域获得的全局运动矢量GMV之间的差而获得的差值DeltaLMV进行编码。 全局运动矢量差分编码单元74对通过使针对相应的全局区域获得的每个全局运动矢量GMV与基准全局运动矢量GMV B之间的差进行差分DeltaGMV的编码， 作为参考。

公开(公告)号：US20060188021A1

公开(公告)日：2006-08-24

申请号：US11360495

申请日：2006-02-24

申请人： Mitsuru Suzuki ,  Shigeyuki Okada

发明人： Mitsuru Suzuki ,  Shigeyuki Okada

IPC分类号： H04N11/02 ,  H04N11/04 ,  H04N7/12 ,  H04B1/66

CPC分类号： H04N19/53 ,  G06T7/207 ,  H04N19/105 ,  H04N19/152 ,  H04N19/433

摘要： A motion vector detecting unit 24 detects a motion vector between an input image and a reference image. A reduced image creation unit 40 reads out pixel data of the reference image from the frame memory, and creates a reduced image at a lower resolution than that of the original reference image. A reduced image holding unit 42 stores a part or all of the reduced image thus created. A computation unit 44 performs matching computation between the input image and the reference image using the reduced images, thereby detecting an approximate motion vector. Subsequently, the computation unit 44 detects a motion vector using the images at the original resolution with reference to the approximate motion vector. When the computation unit 44 detects the motion vector using the reduced images, a part of the reduced image stored in the reduced image holding unit 42 is not newly created, and is read out from the reduced image holding unit 42.

摘要翻译： 运动矢量检测单元24检测输入图像和参考图像之间的运动矢量。 缩小图像创建单元40从帧存储器读出参考图像的像素数据，并以比原始参考图像低的分辨率创建缩小图像。 缩小图像保持单元42存储由此产生的缩小图像的一部分或全部。 计算单元44使用缩小图像执行输入图像和参考图像之间的匹配计算，从而检测近似运动矢量。 随后，计算单元44参照近似运动矢量使用原始分辨率的图像来检测运动矢量。 当计算单元44使用缩小图像检测运动矢量时，不重新创建存储在缩小图像保持单元42中的部分缩小图像，并且从缩小图像保持单元42读出。

公开(公告)号：US08126277B2

公开(公告)日：2012-02-28

申请号：US12073047

申请日：2008-02-28

申请人： Yasuo Ishii ,  Mitsuru Suzuki ,  Shigeyuki Okada

发明人： Yasuo Ishii ,  Mitsuru Suzuki ,  Shigeyuki Okada

IPC分类号： G06K9/36

CPC分类号： H04N19/17 ,  H04N19/105 ,  H04N19/124 ,  H04N19/152 ,  H04N19/176

摘要： A correlation evaluation unit evaluates a correction between a predetermined region in a targeted picture and a region corresponding to the region in a picture differing from the targeted picture in a temporal direction. A quantization control unit adaptively controls quantization processing for the predetermined region in the targeted picture, according to an evaluation obtained by the correlation evaluation unit. For example, when it is determined by an evaluation value obtained by the correlation evaluation unit that the correlation is weaker than a predetermined threshold value, the quantization control unit enlarges a quantization step used for quantization of the predetermined region.

摘要翻译： 相关评估单元在时间方向上评估目标图像中的预定区域和与目标图像不同的图像中的区域的区域之间的校正。 量化控制单元根据由相关评估单元获得的评估自适应地控制目标图像中的预定区域的量化处理。 例如，当由相关评估单元获得的评估值确定相关性弱于预定阈值时，量化控制单元放大用于量化预定区域的量化步长。