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239 条记录 (耗时 0.027 秒)

    Image encoder, image decoder, image encoding method, image decoding method and image encoding/decoding system
    32.
    发明授权
    Image encoder, image decoder, image encoding method, image decoding method and image encoding/decoding system 有权
    图像编码器，图像解码器，图像编码方法，图像解码方法和图像编码/解码系统

    公开(公告)号：US06404815B1

    公开(公告)日：2002-06-11

    申请号：US09180188

    申请日：1999-01-19

    申请人： Shunichi Sekiguchi ,  Kohtaro Asai ,  Tokumichi Murakami ,  Hirofumi Nishikawa ,  Shinichi Kuroda ,  Yoshimi Isu ,  Yuri Hasegawa

    发明人： Shunichi Sekiguchi ,  Kohtaro Asai ,  Tokumichi Murakami ,  Hirofumi Nishikawa ,  Shinichi Kuroda ,  Yoshimi Isu ,  Yuri Hasegawa

    IPC分类号： H04N712

    CPC分类号： H04N19/523 ,  H04N19/53 ,  H04N19/537 ,  H04N19/61

    摘要： An efficient video encoder and a compression encoding of an input picture includes motion compensated prediction means for performing interframe motion detection. The motion compensated prediction means has a motion detector and a motion compensator. The motion detector includes an image transforming unit that transforms a reference picture portion into a picture portion having a predefined shape. The motion compensator includes a pel determinator for determining integer pels of real sample points of the transformed reference picture portion that corresponds to an integer pel of the input picture block according to the motion parameters supplied from the motion detector as a result of the comparison so as to supply prediction picture data. The video encoder and a decoder having a motion compensator that performs operations similar to the video encoder are combined to form a video encoding and decoding system.

    摘要翻译： 有效的视频编码器和输入图像的压缩编码包括用于执行帧间运动检测的运动补偿预测装置。 运动补偿预测装置具有运动检测器和运动补偿器。 运动检测器包括将参考图像部分变换为具有预定形状的图像部分的图像变换单元。 运动补偿器包括：像素确定器，用于根据由运动检测器提供的运动参数作为比较的结果，确定变换的参考图像部分的实际采样点的整数像素对应于输入图像块的整数像素，以便 以提供预测图像数据。 视频编码器和具有执行与视频编码器类似的操作的运动补偿器的解码器被组合以形成视频编码和解码系统。

    Image coded data re-encoding apparatus without once decoding the original image coded data
    33.
    发明授权
    Image coded data re-encoding apparatus without once decoding the original image coded data 失效
    图像编码数据重新编码装置，一次解码原始图像编码数据

    公开(公告)号：US06222887B1

    公开(公告)日：2001-04-24

    申请号：US09351282

    申请日：1999-07-12

    申请人： Hirofumi Nishikawa ,  Kohtaro Asai ,  Tokumichi Murakami

    发明人： Hirofumi Nishikawa ,  Kohtaro Asai ,  Tokumichi Murakami

    IPC分类号： H04N712

    CPC分类号： H04N19/40 ,  H04N19/124 ,  H04N19/126 ,  H04N19/46 ,  H04N19/60

    摘要： An image processing apparatus includes a data analyzer for extracting first decoding parameters representative of the first image data signal. A signal processor is coupled to the data analyzer for signal processing of the first coding parameters and outputting processed first coding parameters. A data synthesizer individually converts the processed first coding parameters into corresponding second coding parameters. The data synthesizer includes a coder for encoding the second coding parameters into a composite second image data signal.

    摘要翻译： 一种图像处理装置包括用于提取表示第一图像数据信号的第一解码参数的数据分析器。 信号处理器耦合到数据分析器，用于对第一编码参数进行信号处理并输出经处理的第一编码参数。 数据合成器将经处理的第一编码参数分别转换为对应的第二编码参数。 数据合成器包括用于将第二编码参数编码为复合第二图像数据信号的编码器。

    Motion picture encoding system and motion picture decoding system
    35.
    发明授权
    Motion picture encoding system and motion picture decoding system 失效
    运动图像编码系统和运动图像解码系统

    公开(公告)号：US6108449A

    公开(公告)日：2000-08-22

    申请号：US112449

    申请日：1998-07-09

    申请人： Shunichi Sekiguchi ,  Yoshimi Isu ,  Kohtaro Asai

    发明人： Shunichi Sekiguchi ,  Yoshimi Isu ,  Kohtaro Asai

    IPC分类号： H04N19/50 ,  G06T9/00 ,  H04N19/20 ,  H04N19/21 ,  H04N19/423 ,  H04N19/46 ,  H04N19/503 ,  H04N19/51 ,  H04N19/533 ,  H04N19/543 ,  H04N19/593 ,  H04N19/61 ,  H04N19/625 ,  H04N19/70 ,  H04N19/85 ,  H04N19/91 ,  G06K9/36

    CPC分类号： H04N19/137 ,  H04N19/105 ,  H04N19/112 ,  H04N19/20

    摘要： A motion picture encoding system comprising a frame-based shape motion detecting unit (24) and a frame-based shape motion compensation unit (26) which make motion compensated prediction for the shape data (2) of each alpha block included in an interlaced frame comprised of a pair of top and bottom fields so as to generate a frame-based prediction data for shape. In addition, a field-based shape motion detecting unit (28) and a field-based shape motion compensation unit (30) make motion compensated prediction for the shape data (2) of each alpha block included in each of the two fields of the frame independently so as to generate a field-based prediction data for shape. An arithmetic encoding unit (32) can inter-code the shape data using the frame-based prediction data for shape, and inter-code the shape data using the field-based prediction data for shape. The arithmetic encoding unit (32) then selects one of the coded results having the shortest code length.

    摘要翻译： 一种运动图像编码系统，包括基于帧的形状运动检测单元（24）和基于帧的形状运动补偿单元（26），其对包含在隔行扫描帧中的每个阿尔法块的形状数据（2）进行运动补偿预测 由一对顶部和底部场组成，以便产生用于形状的基于帧的预测数据。 此外，基于场的形状运动检测单元（28）和基于场的形状运动补偿单元（30）对包括在所述两个场的两个场中的每个中的每个α块的形状数据（2）进行运动补偿预测 以便生成用于形状的基于场的预测数据。 算术编码单元（32）可以使用用于形状的基于帧的预测数据对形状数据进行编码，并且使用基于场的预测数据对形状进行编码。 算术编码单元（32）然后选择具有最短码长的编码结果之一。

    Digital image decoding apparatus
    38.
    发明授权
    Digital image decoding apparatus 失效
    数字图像解码装置

    公开(公告)号：US5701159A

    公开(公告)日：1997-12-23

    申请号：US715161

    申请日：1996-09-17

    申请人： Hideo Ohira ,  Tokumichi Murakami ,  Kohtaro Asai ,  Toshiaki Shimada

    发明人： Hideo Ohira ,  Tokumichi Murakami ,  Kohtaro Asai ,  Toshiaki Shimada

    IPC分类号： H04N19/60 ,  G06T9/00 ,  H04N19/115 ,  H04N19/134 ,  H04N19/176 ,  H04N19/423 ,  H04N19/426 ,  H04N19/44 ,  H04N19/503 ,  H04N19/593 ,  H04N19/61 ,  H04N19/625 ,  H04N19/91 ,  H04N7/50

    CPC分类号： H04N19/428 ,  H04N19/42 ,  H04N19/423 ,  H04N19/61

    摘要： Data which has been decoded by a decoding portion 101 are compressed by a compressing portion 102 and stored in a prediction/display frame memory portion 103. From the data stored in the prediction/display frame memory portion 103, any data required for decoding other frames in the decoding portion 101 are decompressed through a decompressing A portion 104 and supplied to the decoding portion 101. Alternatively, data to be displayed is read from the prediction/display frame memory portion 103, decompressed at a decompressing B portion 105 and supplied to a display apparatus. Writing to and reading from the above-mentioned prediction/display frame memory portion 103 is controlled by an address controlling portion 106. Since compressed data are stored in the prediction/display frame memory portion 103, the memory capacity can be decreased.

    摘要翻译： 由解码部分101解码的数据被压缩部分102压缩并存储在预测/显示帧存储器部分103中。从预测/显示帧存储器部分103中存储的数据中，解码其它帧所需的任何数据 在解码部分101中通过解压缩A部分104解压缩并提供给解码部分101.或者，从预测/显示帧存储部分103读取要显示的数据，在解压缩B部分105解压缩并提供给 显示装置。 由地址控制部分106控制对上述预测/显示帧存储器部分103的写入和读取。由于压缩数据被存储在预测/显示帧存储器部分103中，所以可以减小存储器容量。

    Adaptive comb filter
    40.
    发明授权
    Adaptive comb filter 失效
    自适应梳状滤波器

    公开(公告)号：US5047838A

    公开(公告)日：1991-09-10

    申请号：US552953

    申请日：1990-07-16

    申请人： Tokumichi Murakami ,  Atsushi Ito ,  Kohtaro Asai

    发明人： Tokumichi Murakami ,  Atsushi Ito ,  Kohtaro Asai

    IPC分类号： H03H21/00 ,  H04N7/26 ,  H04N7/46 ,  H04N9/78

    CPC分类号： H03H21/0023 ,  H04N19/186 ,  H04N19/59 ,  H04N9/78

    摘要： A subnyquist sampling filter which results in less loss of picture resolution. An adaptive prefilter perform low-pass filter processing on a series of picture signals sampled in the form of a square lattice in a direction in which it has been determined that the degree of change of the picture signal at the periphery of an extracted picture element is a minimum. An adaptive interpolation filter performs interpolation processing on the picture signal obtained by subnyquist sampling with a subsampler the picture signal output from the adaptive prefilter in the direction where the degree of change of the picture signal level at the periphery of the abstracted picture elements is a minimum.