公开(公告)号：US20080279478A1

公开(公告)日：2008-11-13

申请号：US11798036

申请日：2007-05-09

申请人： Mikhail Tsoupko-Sitnikov ,  Igor Borovikov ,  Shinichi Yamashita ,  Masuharu Endo

发明人： Mikhail Tsoupko-Sitnikov ,  Igor Borovikov ,  Shinichi Yamashita ,  Masuharu Endo

IPC分类号： G06K9/32

CPC分类号： H04N19/54

摘要： An image frame is segmented into a plurality of groups of blocks characterized by movements approximating each other. An image reader receives a source image frame and a destination image frame in image data including consecutive image frames and segments the frames into blocks. A corresponding point information generator computes matching to detect corresponding point information indicating correspondence between the source image frame and the destination image frame and generates a corresponding point information file which describes coordinates of corresponding points in the image frames. An affine parameter calculating unit calculates affine parameters indicating deformation and movement of a block occurring between the source image frame and the destination image frame, on the basis of the corresponding point information. A seed block growth unit examiners a block adjacent to a seed block serving as a starting point for area growth and repeats a determination as to whether the seed block should be combined with the adjacent block so as to segment an image frame into a group of background blocks characterized by movements approximating each other and the other groups of blocks.

摘要翻译： 图像帧被分割成多个以彼此相近的运动为特征的块组。 图像读取器在包括连续图像帧的图像数据中接收源图像帧和目的图像帧，并将帧分割成块。 对应点信息生成器计算匹配以检测指示源图像帧和目的图像帧之间的对应关系的对应点信息，并生成描述图像帧中对应点的坐标的对应点信息文件。 仿射参数计算单元基于对应的点信息来计算表示在源图像帧和目的地图像帧之间发生的块的变形和移动的仿射参数。 种子块生长单元检查与用作区域生长的起始点的种子块相邻的块，并重复确定种子块是否应与相邻块组合，以将图像帧分割成背景组 以移动近似为特征的块和另一组块。

公开(公告)号：US20080278633A1

公开(公告)日：2008-11-13

申请号：US11798035

申请日：2007-05-09

申请人： Mikhail Tsoupko-Sitnikov ,  Igor Borovikov ,  Shinichi Yamashita ,  Masuharu Endo

发明人： Mikhail Tsoupko-Sitnikov ,  Igor Borovikov ,  Shinichi Yamashita ,  Masuharu Endo

IPC分类号： H04N5/14

CPC分类号： H04N5/144 ,  G06T7/238 ,  G06T2207/10016 ,  G06T2207/20016

摘要： A corresponding point information generator computes matching between a source image frame and a destination image frame in image data comprising consecutive image frames so as to determine corresponding point information indicating pixel-by-pixel matching. A motion vector detector determines a motion vector for each pixel in the source image frame according to a result of matching. A reliability area isolating unit segments an image frame in which a motion vector is determined into blocks, so as to isolate, in each block, a reliable area characterized by relatively high precision of the motion vector as calculated and a non-reliable area characterized by relatively low precision of the motion vector. A motion vector improving unit calculates, when a motion vector of a reliable area is applied to a pixel in a non-reliable area adjacent to the reliable area, an error between a pixel value occurring at the destination as a result of application and a pixel value of a corresponding pixel in the destination image frame, and, when the error is equal to or smaller than a threshold, incorporates the pixel in the non-reliable area into the reliable area, and replaces the motion vector of that pixel by the motion vector of the reliable area.

摘要翻译： 相应的点信息生成器计算包括连续图像帧的图像数据中的源图像帧和目的图像帧之间的匹配，以便确定指示逐像素匹配的相应点信息。 运动矢量检测器根据匹配的结果确定源图像帧中的每个像素的运动矢量。 可靠性区域隔离单元将其中确定运动矢量的图像帧分割成块，以便在每个块中隔离以所计算的运动矢量的相对较高精度为特征的可靠区域，以及不可靠区域 运动矢量精度相对较低。 运动矢量改善单元当将可靠区域的运动矢量应用于与可靠区域相邻的不可靠区域中的像素时，计算作为应用结果在目的地出现的像素值与像素之间的误差 目标图像帧中的对应像素的值，并且当误差等于或小于阈值时，将不可靠区域中的像素合并到可靠区域中，并且通过运动来代替该像素的运动矢量 矢量的可靠区域。

公开(公告)号：US20070206672A1

公开(公告)日：2007-09-06

申请号：US11547289

申请日：2005-03-29

申请人： Shinichi Yamashita ,  Masuharu Endo ,  Kozo Akiyoshi ,  Nobuo Akiyoshi

发明人： Shinichi Yamashita ,  Masuharu Endo ,  Kozo Akiyoshi ,  Nobuo Akiyoshi

IPC分类号： H04N11/02

CPC分类号： H04N19/577 ,  H04N19/44 ,  H04N19/537 ,  H04N19/60

摘要： When a moving picture is encoded with a high compression ratio by the MPEG, the block noise becomes remarkable. Matching is calculated between the first and the second key frame and corresponding point information is generated. According to this corresponding point information, a virtual second key frame is generated. A difference between the actual second key frame and the virtual second key frame is compressed/encoded by a difference encoder. The first key frame, the corresponding point information, and the compressed/encoded difference are outputted as encoded data between the first and second key frame.

摘要翻译： 当通过MPEG以高压缩率编码运动图像时，块噪声变得显着。 在第一和第二关键帧之间计算匹配，并生成对应的点信息。 根据该对应点信息，生成虚拟第二关键帧。 实际的第二关键帧和虚拟第二关键帧之间的差异由差分编码器进行压缩/编码。 第一关键帧，对应点信息和压缩/编码差值作为第一和第二关键帧之间的编码数据输出。