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36 条记录 (耗时 0.019 秒)

    Image processing apparatus and method
    11.
    发明授权
    Image processing apparatus and method 失效
    图像处理装置及方法

    公开(公告)号：US5903669A

    公开(公告)日：1999-05-11

    申请号：US591154

    申请日：1996-01-25

    申请人： Yasuji Hirabayashi

    发明人： Yasuji Hirabayashi

    IPC分类号： H04N19/00 ,  G06T9/00 ,  H04N19/119 ,  H04N19/136 ,  H04N19/14 ,  H04N19/192 ,  H04N19/196 ,  H04N19/36 ,  H04N19/46 ,  H04N19/463 ,  H04N19/625 ,  H04N19/70 ,  H04N19/90 ,  H04N19/91 ,  G06K9/36

    CPC分类号： G06T9/007

    摘要： In compressing an image in units of blocks, the image is compressed in accordance with the size of a redundant portion of the image to increase the compression factor of the image data. An image compression apparatus for encoding an image in units of blocks includes a size discrimination unit for discriminating a block image size suitable for encoding and compressing a predetermined image area, a generation unit for dividing the image area to generate a plurality of block images having different sizes on the basis of the discrimination result of the size discrimination unit, and a compression unit for compressing each block image data representing a block image and generated from the generation unit, on the basis of the size of the block image data.

    摘要翻译： 在以块为单位压缩图像时，根据图像的冗余部分的大小压缩图像，以增加图像数据的压缩因子。 用于以块为单位对图像进行编码的图像压缩装置包括用于鉴别适合于对预定图像区域进行编码和压缩的块图像尺寸的尺寸鉴别单元，用于分割图像区域以生成具有不同的多个块图像的生成单元 基于尺寸判别单元的判别结果的尺寸;以及压缩单元，用于根据块图像数据的大小来压缩表示块图像并从生成单元生成的块图像数据。

    Motion vector detecting device
    13.
    发明授权
    Motion vector detecting device 失效
    运动矢量检测装置

    公开(公告)号：US5787205A

    公开(公告)日：1998-07-28

    申请号：US933501

    申请日：1997-09-18

    申请人： Yasuji Hirabayashi

    发明人： Yasuji Hirabayashi

    IPC分类号： H04N19/50 ,  G06T7/20 ,  H04N19/423 ,  H04N19/503 ,  H04N19/51 ,  H04N19/513 ,  H04N19/533 ,  H04N19/57 ,  H04N19/91 ,  G06K9/36

    CPC分类号： H04N19/51 ,  H04N19/56

    摘要： The present invention provides a motion vector detecting device or method by which dependable motion vectors are detected. The device, according to one aspect of the invention, searches for a similar block in a previous image to a subject block in both a first area expanding from a corresponding position to the subject block and a second area expanding from a position indicated by a predictive vector and detecting a motion vector according to a result of the searching. Because there is a fair possibility of occurring the similar block in both the first and second areas.

    摘要翻译： 本发明提供一种检测可靠运动矢量的运动矢量检测装置或方法。 根据本发明的一个方面，根据本发明的一个方面，在从对应位置扩展到对象块的第一区域以及从预测中指示的位置展开的第二区域中，在先前图像中的对象块中搜索类似的块， 并根据搜索结果检测运动矢量。 因为在第一和第二区域都有相似的块发生的公平可能性。

    Image encoding apparatus
    15.
    发明授权
    Image encoding apparatus 失效
    图像编码装置

    公开(公告)号：US06256413B1

    公开(公告)日：2001-07-03

    申请号：US08444012

    申请日：1995-05-18

    申请人： Yasuji Hirabayashi

    发明人： Yasuji Hirabayashi

    IPC分类号： G06K936

    CPC分类号： H04N19/59 ,  H04N19/124 ,  H04N19/132 ,  H04N19/14 ,  H04N19/146 ,  H04N19/152 ,  H04N19/176 ,  H04N19/18 ,  H04N19/60 ,  H04N19/61

    摘要： There are disclosed an image encoding apparatus comprising an input unit for inputting image data, a calculation unit for calculating an entropy of the image data inputted by the input unit, a control unit for controlling a quantization step in accordance with the entropy calculated by the calculation unit, and an encoding unit for encoding the image data inputted by the input unit in accordance with the quantization step controlled by the control unit, an image encoding apparatus comprising an input unit for inputting image data, a calculation unit for calculating an entropy of the image data inputted by the input unit, a transform unit for orthogonally transforming the image data inputted by the input unit, a mask unit for masking transform coefficients of the image data transformed by the transform unit, and an encoding unit for encoding the image data masked by the mask unit. The mask area by the mask unit is determined in accordance with the entropy calculated by the calculation unit, and an image encoding apparatus comprising an input unit for inputting image data of block comprising a plurality of pixels, a transform unit for orthogonally transforming the block image data inputted by the input unit, a mask unit for masking transform coefficients of the block image data transformed by the transform unit, and an encoding unit for encoding the block image data masked by the mask unit.

    摘要翻译： 公开了一种图像编码装置，包括用于输入图像数据的输入单元，用于计算由输入单元输入的图像数据的熵的计算单元，用于根据通过计算计算的熵来控制量化步长的控制单元 单元，以及编码单元，用于根据由控制单元控制的量化步长对由输入单元输入的图像数据进行编码;图像编码装置，包括用于输入图像数据的输入单元，计算单元， 由输入单元输入的图像数据，用于对由输入单元输入的图像数据进行正交变换的变换单元，用于屏蔽由变换单元变换的图像数据的变换系数的掩码单元，以及用于对被屏蔽的图像数据进行编码的编码单元 由面罩单元。 根据由计算单元计算的熵来确定掩模单元的掩模区域，以及包括用于输入包含多个像素的块的图像数据的输入单元的图像编码装置，用于对块图像进行正交变换的变换单元 由输入单元输入的数据，用于掩蔽由变换单元变换的块图像数据的变换系数的掩码单元，以及对由掩模单元掩蔽的块图像数据进行编码的编码单元。

    Coding/decoding apparatus
    16.
    发明授权
    Coding/decoding apparatus 失效
    编码/解码装置

    公开(公告)号：US06188726B1

    公开(公告)日：2001-02-13

    申请号：US08733788

    申请日：1996-10-18

    申请人： Yasuji Hirabayashi

    发明人： Yasuji Hirabayashi

    IPC分类号： H04N712

    CPC分类号： H04N19/23 ,  H04N19/503

    摘要： A coding apparatus is arranged to eliminate predetermined image data from input image data and code the input image data from which the predetermined image data is eliminated. A decoding apparatus is arranged to decode the coded image data from which the predetermined image data is eliminated and combine desired image data with the decoded image data.

    摘要翻译： 编码装置被布置为从输入图像数据中消除预定的图像数据，并对从其中消除预定图像数据的输入图像数据进行编码。 解码装置被配置为对预定图像数据被去除的编码图像数据进行解码，并将期望的图像数据与解码的图像数据组合。

    Image processing apparatus and method
    17.
    发明授权
    Image processing apparatus and method 失效
    图像处理装置及方法

    公开(公告)号：US6061474A

    公开(公告)日：2000-05-09

    申请号：US668635

    申请日：1996-06-21

    申请人： Hiroshi Kajiwara ,  Tadashi Yoshida ,  Yasuji Hirabayashi

    发明人： Hiroshi Kajiwara ,  Tadashi Yoshida ,  Yasuji Hirabayashi

    IPC分类号： G06T9/00 ,  H04N1/41 ,  H04N7/26 ,  H04N7/30 ,  H04N7/32 ,  G06K9/36 ,  H04N7/12

    CPC分类号： H04N19/50 ,  H04N19/13 ,  H04N19/60 ,  H04N19/91

    摘要： An encoding error by the encoding and the decoding of an image is controlled within a predetermined range by an image processing apparatus which includes an input unit for inputting image data, a prediction unit for predicting pixel values indicated by the image data, a generation unit for generating pixel values derived by converting the pixel values of the image data within a range of .+-.e based on the prediction result by said prediction unit and an encoding unit for encoding parameters relating to the pixel values generated by said generation unit based on the prediction result by said prediction unit. An image having a gradient in the values of block pixels is encoded at a high efficiency by an image processing apparatus which includes a division unit for dividing an image into block pixels to be encoded, a generation unit for generating parameters defining a plane based on values of first block pixels and values indicating positions of the block pixels to be encoded and a plane encoding unit for encoding difference values between the values of the block pixels indicated by the plane defined by the parameters and the values of the encoded block pixels.

    摘要翻译： 通过图像处理装置将图像的编码和解码的编码误差控制在预定范围内，图像处理装置包括用于输入图像数据的输入单元，用于预测由图像数据指示的像素值的预测单元，用于 生成通过基于所述预测单元的预测结果将图像数据的像素值转换为+/- e的范围而得到的像素值，以及编码单元，用于对与所述生成单元生成的像素值进行编码的参数基于 所述预测单元的预测结果。 具有块像素值的梯度的图像由包括用于将图像划分为待编码的块像素的分割单元的图像处理装置以高效率编码，用于基于值生成定义平面的参数的生成单元 第一块像素和表示要编码的块像素的位置的值以及用于编码由参数所定义的平面所指示的块像素的值与编码块像素的值之间的差值的平面编码单元。

    Block matching method and apparatus which can use luminance/chrominance data
    19.
    发明授权
    Block matching method and apparatus which can use luminance/chrominance data 失效
    可以使用亮度/色度数据的块匹配方法和装置

    公开(公告)号：US5900910A

    公开(公告)日：1999-05-04

    申请号：US452859

    申请日：1995-05-30

    申请人： Yasuji Hirabayashi ,  Tadashi Yoshida ,  Hidefumi Ohsawa

    发明人： Yasuji Hirabayashi ,  Tadashi Yoshida ,  Hidefumi Ohsawa

    IPC分类号： G06T7/20 ,  G06T9/00 ,  H04N5/14 ,  H04N7/26 ,  H04N7/36 ,  H04N11/04 ,  H04N7/32

    CPC分类号： H04N19/14 ,  G06T7/2013 ,  G06T7/2026 ,  H04N19/186 ,  H04N19/503 ,  H04N19/51 ,  H04N19/53 ,  H04N5/145 ,  G06T2207/10016 ,  G06T2207/10024 ,  H04N11/044

    摘要： A movement vector detecting apparatus for detecting a movement vector of an object between frames which are close to each other on a block unit basis is provided. A first mode to detect the movement vector by using color components and a second mode to detect the movement vector by using a luminance component are switched in accordance with chromaticity statistics of an input block, thereby detecting the movement vector. There is also provided an encoding apparatus wherein a difference between an input signal to be encoded and a prediction value is quantized, the quantized signal is generated, the quantized differential signal is inversely quantized the sum of the inversely quantized reproduction differential signal and the prediction value is stored, the stored signal is read out on the basis of an address signal regarding the input signal, the read-out signal and the input signal are received as inputs and the prediction value is obtained, and when the prediction value is derived, an evaluation function to obtain the prediction value is determined in accordance with chromaticity statistics of the input signal.

    摘要翻译： 提供一种运动矢量检测装置，用于以块单位为基础检测彼此靠近的帧之间的对象的运动矢量。 根据输入块的色度统计来切换通过使用颜色分量来检测运动矢量的第一模式和通过使用亮度分量来检测运动矢量的第二模式，从而检测运动矢量。 还提供了一种编码装置，其中量化要编码的输入信号和预测值之间的差异，产生量化的信号，量化的差分信号对反量化的再现差分信号和预测值的和进行逆量化 存储信号，基于关于输入信号的地址信号读出存储的信号，接收读出信号和输入信号作为输入，并且获得预测值，并且当推导出预测值时， 根据输入信号的色度统计来确定获得预测值的评价函数。