Image coding device, image decoding device, image coding method, and image decoding method
    1.
    发明授权
    Image coding device, image decoding device, image coding method, and image decoding method 有权
    图像编码装置,图像解码装置,图像编码方法以及图像解码方法

    公开(公告)号:US09503718B2

    公开(公告)日:2016-11-22

    申请号:US14000305

    申请日:2012-06-11

    摘要: Disclosed is an image decoding method including a step of variable-length-decoding coded data multiplexed into a bitstream to acquire compressed data associated with a coding block, a reference image restriction flag indicating whether or not to restrict a significant reference image area which is an area on a reference image which can be used for the motion-compensated prediction, and motion information and a motion-compensated prediction step of carrying out a motion-compensated prediction process on the coding block on the basis of the motion information to generate a prediction image, in which the motion-compensated prediction step includes a step of when the prediction image includes a pixel located outside the significant reference image area, carrying out a predetermined extending process to generate the prediction image on the basis of the reference image restriction flag by using the motion information.

    摘要翻译: 公开了一种图像解码方法,包括将多路复用到比特流中的编码数据进行可变长度解码以获取与编码块相关联的压缩数据的步骤,指示是否限制作为编码块的重要参考图像区域的参考图像限制标志 可以用于运动补偿预测的参考图像上的区域,以及基于运动信息对编码块执行运动补偿预测处理的运动信息和运动补偿预测步骤,以生成预测 图像,其中运动补偿预测步骤包括当预测图像包括位于有效参考图像区域之外的像素的步骤时,基于参考图像限制标志执行预定的扩展处理以生成预测图像 使用运动信息。

    IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING METHOD, IMAGE DECODING METHOD, AND IMAGE PREDICTION DEVICE
    4.
    发明申请
    IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING METHOD, IMAGE DECODING METHOD, AND IMAGE PREDICTION DEVICE 有权
    图像编码装置,图像解码装置,图像编码方法,图像解码方法和图像预测装置

    公开(公告)号:US20140064368A1

    公开(公告)日:2014-03-06

    申请号:US14114567

    申请日:2012-05-30

    IPC分类号: H04N7/34 H04N7/26

    摘要: When an intra prediction parameter indicates a horizontal prediction process, an intra prediction unit adds a value proportional to a change in a horizontal direction of the luminance values of pixels adjacent to the top of each block, which is a unit for prediction process of a coding block, to the luminance value of a pixel adjacent to the left of the block to set a result of the addition as a predicted value of a prediction image, whereas when the intra prediction parameter indicates a vertical prediction process, the intra prediction unit adds a value proportional to a change in a vertical direction of the luminance values of pixels adjacent to the left of the block to the luminance value of the pixel adjacent to the top of the block to set the result of the addition as a predicted value of the prediction image.

    摘要翻译: 当帧内预测参数表示水平预测处理时,帧内预测单元将作为编码的预测处理的单位的每个块的顶部附近的像素的亮度值的水平方向的变化成比例的值 阻止与块左侧相邻的像素的亮度值,以将加法的结果设置为预测图像的预测值,而当帧内预测参数表示垂直预测处理时,帧内预测单元将 与块的左侧相邻的像素的亮度值的垂直方向的变化成比例地与与块的顶部相邻的像素的亮度值成比例的值,以将加法的结果设置为预测的预测值 图片。

    Moving image decoding device and moving image decoding method
    9.
    发明授权
    Moving image decoding device and moving image decoding method 有权
    运动图像解码装置和运动图像解码方法

    公开(公告)号:US08369404B2

    公开(公告)日:2013-02-05

    申请号:US11925248

    申请日:2007-10-26

    IPC分类号: H04B1/66

    摘要: Encoding and decoding are uniformly carried out for a plurality of chroma formats. Based on a control signal for providing a chroma format type of an input moving image signal, in the case of a chroma format of 4:2:0 or 4:2:2, a first intra prediction mode deciding unit and a first intra prediction image generation unit are applied to a luminance component of the input moving image signal, and a second intra prediction mode deciding unit and a second intra prediction image generation unit are applied to a chrominance component. In the case of a chroma format of 4:4:4, the first intra prediction mode deciding unit and the first intra prediction image generation unit are applied to all color components to carry out encoding, and a variable length encoding unit multiplexes the control signal as encoding data to be applied to a moving image sequence unit on a bit stream.

    摘要翻译: 针对多种色度格式均匀地执行编码和解码。 基于用于提供输入运动图像信号的色度格式的控制信号,在4:2:0或4:2:2的色度格式的情况下,第一帧内预测模式判定单元和第一帧内预测 图像生成单元被应用于输入运动图像信号的亮度分量,并且第二帧内预测模式判定单元和第二帧内预测图像生成单元被应用于色度分量。 在4:4:4的色度格式的情况下,将第一帧内预测模式判定单元和第一帧内预测图像生成单元应用于全部颜色分量,进行编码,并且可变长度编码单元将控制信号 作为要应用于位流上的运动图像序列单元的编码数据。

    Image encoding device, image decoding device, image encoding method and image decoding method
    10.
    发明授权
    Image encoding device, image decoding device, image encoding method and image decoding method 有权
    图像编码装置,图像解码装置,图像编码方法和图像解码方法

    公开(公告)号:US08139875B2

    公开(公告)日:2012-03-20

    申请号:US11929174

    申请日:2007-10-30

    IPC分类号: G06K9/36

    摘要: An encoding device includes a color component separating unit for separating an input bit stream for the respective color components, a block dividing unit for dividing an input color component signal into blocks to generate a signal of an encoding unit area, a predicted image generating unit for generating a predicted image for the signal, a determining unit for determining a prediction mode used for encoding according to a prediction efficiency of the predicted image, a prediction error encoding unit for encoding a difference between the predicted image corresponding to the prediction mode determined by the determining unit and the input color component signal, and an encoding unit for variable length-coding the prediction mode, an output from the prediction error encoding unit, and a color component identification flag indicating the color component to which the input bit stream belongs as a result of the color component separation.

    摘要翻译: 一种编码装置,包括用于分离各个颜色分量的输入比特流的颜色分量分离单元,用于将输入颜色分量信号分割成块以产生编码单位区域的信号的块分割单元,用于 产生用于该信号的预测图像;确定单元,用于根据预测图像的预测效率确定用于编码的预测模式;预测误差编码单元,用于对与由所述预测图像确定的预测模式相对应的预测图像之间的差进行编码; 确定单元和输入颜色分量信号,以及用于对预测模式进行可变长度编码的编码单元,来自预测误差编码单元的输出和指示输入比特流所属的颜色分量的颜色分量识别标志为 颜色成分分离的结果。