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    Image encoding apparatus and method for the same and image decoding apparatus and method for the same
    1.
    发明授权
    Image encoding apparatus and method for the same and image decoding apparatus and method for the same 有权
    图像编码装置及其相同方法及图像解码装置及其方法

    公开(公告)号：US08559734B2

    公开(公告)日：2013-10-15

    申请号：US13023018

    申请日：2011-02-08

    申请人： Naoya Ohnishi ,  Tomoo Yamakage ,  Tomoya Kodama ,  Hiroaki Fukui

    发明人： Naoya Ohnishi ,  Tomoo Yamakage ,  Tomoya Kodama ,  Hiroaki Fukui

    IPC分类号： G06K9/36

    CPC分类号： H04N19/40 ,  H04N19/184 ,  H04N19/61

    摘要： In one embodiment, an image encoding apparatus converts bit depth of an input image formed of a plurality of pixels each having an N bit depth into an (N+M) bit depth larger than N bit depth by M bits. An adaptive bit depth converter converts the bit depth of each pixel of the decoded image of the (N+M) bits into the N bits selectively using one of a plurality of conversion systems. The converted image of the N bit depth is stored in a frame memory as a reference image. The bit depth of each pixel of the reference image of the N bit depth read out from the frame memory is converted into the (N+M) bit depth larger than the N bit depth by M bits in accordance with the conversion system by a pixel bit depth inverse converter.

    摘要翻译： 在一个实施例中，图像编码装置将由具有N比特深度的多个像素形成的输入图像的比特深度转换为大于N比特深度（N + M）比特深度M比特。 自适应位深度转换器使用多个转换系统之一选择性地将（N + M）位的解码图像的每个像素的比特深度转换成N比特。 将N位深度的转换图像作为参考图像存储在帧存储器中。 从帧存储器读出的N比特深度的参考图像的每个像素的比特深度根据转换系统被转换成比N比特深度大的比特深度M比特 位深度逆变换器。

    IMAGE ENCODING APPARATUS AND METHOD FOR THE SAME AND IMAGE DECODING APPARATUS AND METHOD FOR THE SAME
    2.
    发明申请
    IMAGE ENCODING APPARATUS AND METHOD FOR THE SAME AND IMAGE DECODING APPARATUS AND METHOD FOR THE SAME 有权
    图像编码装置及其相关方法和图像解码装置及其相关方法

    公开(公告)号：US20110262037A1

    公开(公告)日：2011-10-27

    申请号：US13023018

    申请日：2011-02-08

    申请人： Naoya OHNISHI ,  Tomoo Yamakage ,  Tomoya Kodama ,  Hiroaki Fukui

    发明人： Naoya OHNISHI ,  Tomoo Yamakage ,  Tomoya Kodama ,  Hiroaki Fukui

    IPC分类号： G06K9/36

    CPC分类号： H04N19/40 ,  H04N19/184 ,  H04N19/61

    摘要： In one embodiment, an image encoding apparatus converts bit depth of an input image formed of a plurality of pixels each having an N bit depth into an (N+M) bit depth larger than N bit depth by M bits. An adaptive bit depth converter converts the bit depth of each pixel of the decoded image of the (N+M) bits into the N bits selectively using one of a plurality of conversion systems. The converted image of the N bit depth is stored in a frame memory as a reference image. The bit depth of each pixel of the reference image of the N bit depth read out from the frame memory is converted into the (N+M) bit depth larger than the N bit depth by M bits in accordance with the conversion system by a pixel bit depth inverse converter.

    摘要翻译： 在一个实施例中，图像编码装置将由具有N比特深度的多个像素形成的输入图像的比特深度转换为大于N比特深度（N + M）比特深度M比特。 自适应位深度转换器使用多个转换系统之一选择性地将（N + M）位的解码图像的每个像素的比特深度转换成N比特。 将N位深度的转换图像作为参考图像存储在帧存储器中。 从帧存储器读出的N比特深度的参考图像的每个像素的比特深度根据转换系统被转换成比N比特深度大的比特深度M比特 位深度逆变换器。

    MOVING IMAGE ENCODING APPARATUS, MOVING IMAGE ENCODING METHOD, AND VIDEO DEVICE
    4.
    发明申请
    MOVING IMAGE ENCODING APPARATUS, MOVING IMAGE ENCODING METHOD, AND VIDEO DEVICE 有权
    移动图像编码设备，移动图像编码方法和视频设备

    公开(公告)号：US20110002382A1

    公开(公告)日：2011-01-06

    申请号：US12816936

    申请日：2010-06-16

    申请人： Takahiro Takimoto ,  Tomoya Kodama

    发明人： Takahiro Takimoto ,  Tomoya Kodama

    IPC分类号： H04N7/26

    CPC分类号： H04N19/40 ,  H04N19/124 ,  H04N19/149 ,  H04N19/152 ,  H04N19/172 ,  H04N19/196

    摘要： According to one embodiment, a moving image/picture encoding apparatus of an embodiment comprises an encoded information acquisition module, an encoding complexity calculation module, an encoding complexity conversion module, and a transcode module. The encoded information acquisition module reads MPEG header information from the input stream to acquire information on a quantization scale, generated bits and a picture type for each frame. The encoding complexity calculation module uses the acquired information to calculate, for each of the frames, encoding complexity represented in a form of the product of the quantization scale and the generated bits. The encoding complexity conversion module uses a linear function prepared for each of the picture types to convert the calculated encoding complexity into encoding complexity of H. 264/AVC. The transcode module uses the converted encoding complexity of H. 264/AVC to transcode the input stream into the output stream.

    摘要翻译： 根据一个实施例，实施例的运动图像/图像编码装置包括编码信息获取模块，编码复杂度计算模块，编码复杂度转换模块和代码转换模块。 编码信息获取模块从输入流读取MPEG标题信息，以获取关于每帧的量化尺度，生成位和图像类型的信息。 编码复杂度计算模块使用所获取的信息针对每个帧计算以量化尺度和所生成比特的积的形式表示的编码复杂度。 编码复杂度转换模块使用为每个图像类型准备的线性函数将计算出的编码复杂度转换为H.264 / AVC的编码复杂度。 代码转换模块使用H.264 / AVC的转换编码复杂度将输入流转码为输出流。

    Motion vector detection method, motion vector detection apparatus, computer program for executing motion vector detection process on computer
    5.
    发明申请
    Motion vector detection method, motion vector detection apparatus, computer program for executing motion vector detection process on computer 审中-公开
    运动矢量检测方法，运动矢量检测装置，用于在计算机上执行运动矢量检测过程的计算机程序

    公开(公告)号：US20060203912A1

    公开(公告)日：2006-09-14

    申请号：US11230509

    申请日：2005-09-21

    申请人： Tomoya Kodama

    发明人： Tomoya Kodama

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

    CPC分类号： H04N19/533 ,  H04N19/61

    摘要： A motion vector detection method includes: a first obtaining unit that obtains similarities of images near a plurality of initial search points with an image of a partial region of a current frame; a setting unit that sets a plurality of subsequent search point candidates based on a gradient of the similarities obtained at the plurality of initial search points respectively; a second obtaining unit that obtains similarities of images near the plurality of search point candidates set thus with the image of the partial region of the current frame; and a detection unit that detects a motion vector for the image of the partial region of the current frame based on a position of one of the plurality of search point candidates providing highest similarity of the similarities obtained for the plurality of search point candidates respectively.

    摘要翻译： 一种运动矢量检测方法，包括：第一获取单元，利用当前帧的局部区域的图像获得多个初始搜索点附近的图像的相似度; 设置单元，其基于在所述多个初始搜索点处获得的相似度的梯度来设置多个后续搜索点候选; 第二获取单元，用于获得与当前帧的部分区域的图像一起设置的多个搜索点候选附近的图像的相似度; 以及检测单元，其基于分别为多个搜索点候选获得的相似度提供最高相似度的多个搜索点候选中的一个的位置来检测当前帧的部分区域的图像的运动矢量。

    Method of transcoding encoded video data and apparatus which transcodes encoded video data
    7.
    发明授权
    Method of transcoding encoded video data and apparatus which transcodes encoded video data 失效
    编码视频数据的代码转换方法和对编码视频数据进行转码的装置

    公开(公告)号：US06934334B2

    公开(公告)日：2005-08-23

    申请号：US09968544

    申请日：2001-10-02

    申请人： Noboru Yamaguchi ,  Toshimitsu Kaneko ,  Tomoya Kodama ,  Takeshi Mita

    发明人： Noboru Yamaguchi ,  Toshimitsu Kaneko ,  Tomoya Kodama ,  Takeshi Mita

    IPC分类号： H04N7/26 ,  H04N7/36 ,  H04B1/66 ,  H04N7/12

    CPC分类号： H04N19/40 ,  H04N19/20 ,  H04N19/51

    摘要： A video transcoding method comprises decoding a first bit stream encoded by a first video encoding format to obtain decoded video data and side information, converting the decoded video data and side information into a form suitable for a second video encoding format to obtain converted video data and converted side information, and encoding the converted video data using motion vectors contained in the side information to obtain a second bit stream of the second video encoding format.

    摘要翻译： 视频代码转换方法包括对由第一视频编码格式编码的第一比特流解码以获得解码的视频数据和边信息，将解码的视频数据和副信息转换成适合于第二视频编码格式的形式，以获得转换的视频数据， 并且使用侧信息中包含的运动矢量对转换的视频数据进行编码，以获得第二视频编码格式的第二比特流。

    Image coding apparatus including a coded quantity prediction expression retaining unit
    8.
    发明授权
    Image coding apparatus including a coded quantity prediction expression retaining unit 失效
    图像编码装置，包括编码量预测表达式保持单元

    公开(公告)号：US07502517B2

    公开(公告)日：2009-03-10

    申请号：US11062625

    申请日：2005-02-23

    申请人： Tomoya Kodama ,  Atsushi Matsumura ,  Noboru Yamaguchi ,  Tatsuaki Iwata

    发明人： Tomoya Kodama ,  Atsushi Matsumura ,  Noboru Yamaguchi ,  Tatsuaki Iwata

    IPC分类号： G06K9/36 ,  G06K9/46

    CPC分类号： H04N19/103 ,  H04N19/142 ,  H04N19/147 ,  H04N19/176 ,  H04N19/61

    摘要： The image coding apparatus is provided to realize image coding with little calculation quantity and through rate distortion optimization thereby maintaining a favorable image quality. The image coding apparatus includes a processing unit that conducts frequency transform and quantization on a block in a predetermined manner for a plurality of coding modes, each mode having a different coding process, a cost calculating unit that calculates a predictive coded quantity and coding distortion in a coding mode using a result of the quantization conducted by the processing unit and a residue to obtain a cost regarding the coding mode, a minimum coding cost selecting unit that selects a minimum coding cost among the coding costs calculated for respective coding modes, and a coding unit that conducts coding on the blocks in a coding mode associated with the minimum coding cost selected by the minimum coding cost selecting unit.

    摘要翻译： 提供图像编码装置以实现少量计算量和通过速率失真优化的图像编码，从而保持良好的图像质量。 该图像编码装置包括处理单元，对于多个编码模式，以预定的方式对块进行频率变换和量化，每个模式具有不同的编码处理，计算预测编码量和编码失真的成本计算单元 使用由处理单元进行的量化结果的编码模式和残差来获得关于编码模式的成本;最小编码成本选择单元，对于针对各个编码模式计算的编码成本中选择最小编码成本，以及 编码单元，其以与由最小编码成本选择单元选择的最小编码成本相关联的编码模式对块进行编码。

    IMAGE CODING APPARATUS, IMAGE CODING METHOD AND IMAGE CODING PROGRAM
    9.
    发明申请
    IMAGE CODING APPARATUS, IMAGE CODING METHOD AND IMAGE CODING PROGRAM 失效
    图像编码设备，图像编码方法和图像编码程序

    公开(公告)号：US20090041122A1

    公开(公告)日：2009-02-12

    申请号：US12234741

    申请日：2008-09-22

    申请人： Tomoya Kodama ,  Atsushi Matsumura ,  Noboru Yamaguchi ,  Tatsuaki Iwata

    发明人： Tomoya Kodama ,  Atsushi Matsumura ,  Noboru Yamaguchi ,  Tatsuaki Iwata

    IPC分类号： H04N7/26

    CPC分类号： H04N19/103 ,  H04N19/142 ,  H04N19/147 ,  H04N19/176 ,  H04N19/61

    摘要： The image coding apparatus is provided to realize image coding with little calculation quantity and through rate distortion optimization thereby maintaining a favorable image quality. The image coding apparatus includes a processing unit that conducts frequency transform and quantization on a block in a predetermined manner for a plurality of coding modes, each mode having a different coding process, a cost calculating unit that calculates a predictive coded quantity and coding distortion in a coding mode using a result of the quantization conducted by the processing unit and a residue to obtain a cost regarding the coding mode, a minimum coding cost selecting unit that selects a minimum coding cost among the coding costs calculated for respective coding modes, and a coding unit that conducts coding on the blocks in a coding mode associated with the minimum coding cost selected by the minimum coding cost selecting unit.

    摘要翻译： 提供图像编码装置以实现少量计算量和通过速率失真优化的图像编码，从而保持良好的图像质量。 该图像编码装置包括处理单元，对于多个编码模式，以预定的方式对块进行频率变换和量化，每个模式具有不同的编码处理，计算预测编码量和编码失真的成本计算单元 使用由处理单元进行的量化结果的编码模式和残差来获得关于编码模式的成本;最小编码成本选择单元，对于针对各个编码模式计算的编码成本中选择最小编码成本，以及 编码单元，其以与由最小编码成本选择单元选择的最小编码成本相关联的编码模式对块进行编码。