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    • 4. 发明授权
    • Moving image decoding apparatus and moving image decoding method
    • 运动图像解码装置和运动图像解码方法
    • US08139647B2
    • 2012-03-20
    • US11664300
    • 2005-10-21
    • Yasuaki TokumoMaki Takahashi
    • Yasuaki TokumoMaki Takahashi
    • H04N7/12H04N7/50H04N11/02H04N11/04H04N1/417H04N7/68H04N5/21G06K9/40
    • H04N19/172H04N19/176H04N19/46H04N19/573H04N19/895
    • Moving image decoding apparatus and moving image decoding method wherein the picture quality degradation is small even when an error occurs in decoding or the like in an coding system that refers to more than one frames to perform a prediction coding. An error correcting part (6) comprises an image selecting part (61) and an error concealing part (62). The image selecting part (61) selects a frame to be used as the image for the concealment and notifies the error concealing part (62) of, as information of the selected frame, the frame number (frame_num) of the selected image or the number of a frame memory in which the selected image is stored. The error concealing part (62) uses additional information and the selected frame information which is given from the image selecting part (61) to conceal the macro block where the error has occurred.
    • 即使在引用多于一帧的编码系统中的解码等中发生错误,即使进行预测编码,图像质量劣化也小的运动图像解码装置和运动图像解码方法。 纠错部分(6)包括图像选择部分(61)和错误隐藏部分(62)。 图像选择部(61)选择要用作隐藏图像的帧,并将误差隐藏部(62)作为所选择的帧的信息通知所选图像的帧号(frame_num)或数字 其中存储所选择的图像的帧存储器。 错误隐藏部分62使用附加信息和从图像选择部分61给出的所选择的帧信息来隐藏发生错误的宏块。
    • 5. 发明申请
    • Moving Image Decoding Apparatus and moving image decoding method
    • 运动图像解码装置和运动图像解码方法
    • US20090262837A1
    • 2009-10-22
    • US11664300
    • 2005-10-21
    • Yasuaki TokumoMaki Takahashi
    • Yasuaki TokumoMaki Takahashi
    • H04N7/26
    • H04N19/172H04N19/176H04N19/46H04N19/573H04N19/895
    • Moving image decoding apparatus and moving image decoding method wherein the picture quality degradation is small even when an error occurs in decoding or the like in an coding system that refers to more than one frames to perform a prediction coding. An error correcting part (6) comprises an image selecting part (61) and an error concealing part (62). The image selecting part (61) selects a frame to be used as the image for the concealment and notifies the error concealing part (62) of, as information of the selected frame, the frame number (frame_num) of the selected image or the number of a frame memory in which the selected image is stored. The error concealing part (62) uses additional information and the selected frame information which is given from the image selecting part (61) to conceal the macro block where the error has occurred.
    • 即使在引用多于一帧的编码系统中的解码等中发生错误,即使进行预测编码,图像质量劣化也小的运动图像解码装置和运动图像解码方法。 纠错部分(6)包括图像选择部分(61)和错误隐藏部分(62)。 图像选择部(61)选择要用作隐藏图像的帧,并将误差隐藏部(62)作为所选择的帧的信息通知所选图像的帧号(frame_num)或数字 其中存储所选择的图像的帧存储器。 错误隐藏部分62使用附加信息和从图像选择部分61给出的所选择的帧信息来隐藏发生错误的宏块。
    • 9. 发明申请
    • MOVING PICTURE ENCODING APPARATUS AND MOVING PICTURE DECODING APPARATUS
    • 移动图像编码装置和移动图像解码装置
    • US20100080291A1
    • 2010-04-01
    • US12518937
    • 2007-12-04
    • Tomoyuki YamamotoMaki TakahashiTomoko Aono
    • Tomoyuki YamamotoMaki TakahashiTomoko Aono
    • H04N7/32H04N7/26
    • H04N19/59H04N19/105H04N19/14H04N19/176H04N19/18H04N19/187H04N19/33H04N19/46
    • A prediction control unit determines whether to use intra-prediction method or a method of prediction based on reduced image in which a predicted image is generated using a locally decoded image of a block as an object of coding that has been coded and reduced, according to the amount of high-frequency component contained in the block as the object of coding. When use of intra-prediction method is determined, locally decoded images of previously-encoded neighboring blocks stored in a frame memory are down-sampled by a down-sampling unit and subjected to intra-prediction by an intra-prediction unit, and coding is done using the prediction data. When use of prediction method based of reduced image is determined, inter-layer prediction is done using neighboring images obtained by reading locally decoded images resulting from a process of a lower layer from the frame memory, and coding is done using the prediction data.
    • 预测控制单元根据根据编码和缩小的编码对象的块的本地解码图像,基于使用预测图像生成预测图像的缩小图像来确定是否使用帧内预测方法或预测方法 作为编码对象的块中包含的高频分量的量。 当确定使用帧内预测方法时,存储在帧存储器中的先前编码的邻近块的局部解码图像由下采样单元进行下采样,并经帧内预测单元进行帧内预测,​​编码为 使用预测数据完成。 当确定使用基于缩小图像的预测方法时,使用通过从帧存储器读取由下层处理产生的局部解码图像而获得的相邻图像来进行层间预测,并且使用预测数据进行编码。