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    • 46. 发明申请
    • IMAGE CODING DEVICE, IMAGE DECODING DEVICE, IMAGE CODING METHOD, AND IMAGE DECODING METHOD
    • 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
    • US20100232691A1
    • 2010-09-16
    • US12738059
    • 2008-10-01
    • Shunichi SekiguchiShuuichi YamagishiYoshimi MoriyaYoshihisa YamadaKohtaro AsaiTokumichi MurakamiYuichi Idehara
    • Shunichi SekiguchiShuuichi YamagishiYoshimi MoriyaYoshihisa YamadaKohtaro AsaiTokumichi MurakamiYuichi Idehara
    • G06K9/36
    • H04N19/59H04N19/147H04N19/186H04N19/61
    • Provided is a method and the like for efficiently compressing information by removing signal correlations more effectively according to local characteristics of a 4:4:4 format video signal to be coded. An image coding device includes: a signal analysis unit for obtaining, for a signal of each of the plurality of color components belonging to the first region, an average in a unit of a second region obtained by dividing the first region, and obtaining an average separated signal corresponding to the second region; an average signal coding unit for applying, independently for the each of the plurality of color components, prediction coding to an average signal formed of the average obtained in the unit of the second region obtained by dividing the first region; and an average separated signal coding unit for transforming the average separated signals of the plurality of color components, which are obtained in the unit of the second region obtained by dividing the first region, by switching among a plurality of inter-color-component transform methods provided, and coding the transformed average separated signals independently of the average signal coding unit, in which the average separated signal coding unit outputs information indicating selected inter-color-component transform methods to the bit stream as a part of coded data.
    • 提供了一种通过根据要编码的4:4:4格式视频信号的局部特性更有效地去除信号相关性来有效地压缩信息的方法等。 图像编码装置包括:信号分析单元,用于对于属于第一区域的多个颜色分量中的每一个的信号,获得通过划分第一区域获得的第二区域的单位的平均值,并获得平均值 对应于第二区域的分离信号; 平均信号编码单元,用于将针对所述多个颜色分量中的每一个分别独立地预测编码为由通过划分所述第一区域获得的以所述第二区域为单位获得的平均值形成的平均信号; 以及平均分离信号编码单元,用于通过在多个颜色分量变换方法之间切换来变换通过划分第一区域获得的以第二区域为单位获得的多个颜色分量的平均分离信号 提供和编码独立于平均信号编码单元的变换的平均分离信号,其中平均分离信号编码单元将表示选择的颜色分量变换方法的信息作为编码数据的一部分输出到比特流。
    • 49. 发明授权
    • Motion compensating apparatus, moving image coding apparatus and method
    • 运动补偿装置,运动图像编码装置及方法
    • US07075989B2
    • 2006-07-11
    • US10837704
    • 2004-05-04
    • Tokumichi MurakamiHideo OhiraHirofumi NishikawaKenichi AsanoYoshihisa YamadaShunichi SekiguchiKohtaro Asai
    • Tokumichi MurakamiHideo OhiraHirofumi NishikawaKenichi AsanoYoshihisa YamadaShunichi SekiguchiKohtaro Asai
    • H04N7/12
    • H04N11/042H04N19/51H04N19/517H04N19/567
    • The present invention provides a motion compensating apparatus which is capable of enhancing the overall coding efficiency by taking the amount of coded information used to code a motion vector as well as the sum of difference absolute values of estimated differences into consideration in order to determine an optimal vector. The motion compensating apparatus includes: a motion compensation processing unit for outputting a motion vector between an input image and a reference image, and an estimated image which is extracted from the reference image in accordance with the motion vector; a unit for calculating the sum of difference absolute values, as a distortion amount calculating unit, to obtain a distortion amount between the input image and the estimated image; a vector value coding unit for receiving the motion vector to code the motion vector thus inputted thereto to output a vector coded amount; and an optimal vector determining unit for receiving the motion vector, the distortion amount and the vector coded amount to obtain, for all of a plurality of motion vectors to be evaluated, an evaluation function calculated from the distortion amount and the vector coded amount to output as an optimal vector the motion vector in which the evaluation function exhibits a minimum value.
    • 本发明提供一种运动补偿装置,其能够通过考虑用于编码运动矢量的编码信息的量以及估计差的绝对值之和来提高整体编码效率,以便确定最优 向量。 运动补偿装置包括:运动补偿处理单元,用于输出输入图像和参考图像之间的运动矢量,以及根据运动矢量从参考图像中提取的估计图像; 用于计算差分绝对值之和作为失真量计算单元获得输入图像与估计图像之间的失真量的单元; 矢量值编码单元,用于接收运动矢量以对输入的运动矢量进行编码,以输出矢量编码量; 以及最佳向量确定单元,用于接收所述运动矢量,所述失真量和矢量编码量,以针对要评估的多个运动矢量的全部获得从所述失真量和所述矢量编码量计算出的评估函数以输出 作为评估函数呈现最小值的运动矢量的最佳向量。