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    • 101. 发明公开
    • ENCODING METHOD, DECODING METHOD, ENCODING DEVICE AND DECODING DEVICE
    • 编码方法,解码方法,编码装置和解码装置
    • EP2464018A1
    • 2012-06-13
    • EP10806251.4
    • 2010-08-06
    • Panasonic Corporation
    • SHIBAHARA, YoujiNISHI, TakahiroSASAI, HisaoTANIKAWA, Kyoko
    • H03M7/30H04N7/30H04N7/32
    • H03M7/30H04N19/122H04N19/176H04N19/18H04N19/196
    • A coding method according to an implementation of the present invention includes: transforming an input signal to generate a transformed output signal (S110); quantizing the transformed output signal to generate a quantized coefficient (S120); and entropy coding the quantized coefficient to generate a coded signal (S130), and the transforming (S110) includes: generating a first transformed output signal by performing a first transform on the input signal using a first transform coefficient (S112); and generating a second transformed output signal by performing, using a second transform coefficient, a second transform on a first partial signal that is a part of the first transformed output signal (S116), and in the entropy coding (S130), the second transform coefficient or a second inverse transform coefficient is compression coded by calculating a difference between a predetermined value and an element included in the second transform coefficient or a second inverse transform coefficient, and compression coding the calculated difference.
    • 根据本发明实施方式的编码方法包括:变换输入信号以生成变换输出信号(S110); 量化经变换的输出信号以产生量化系数(S120); (S130)包括:通过使用第一变换系数对输入信号执行第一变换来产生第一变换的输出信号(S112);以及将变换的输出信号变换为第一变换输出信号。 以及通过使用第二变换系数对作为第一变换输出信号的一部分的第一部分信号执行第二变换(S116),并且在熵编码(S130)中,生成第二变换输出信号,第二变换 系数或第二逆变换系数通过计算预定值与第二变换系数中包括的元素或第二逆变换系数之间的差来压缩编码,以及压缩编码所计算的差。
    • 102. 发明公开
    • ENCODING METHOD, DECODING METHOD, ENCODING DEVICE AND DECODING DEVICE
    • 编码方法,解码方法,编码装置和解码装置
    • EP2464016A1
    • 2012-06-13
    • EP10806249.8
    • 2010-08-06
    • Panasonic Corporation
    • SHIBAHARA, YoujiNISHI, TakahiroSASAI, HisaoTANIKAWA, KyokoNARROSCHKE, MatthiasDRUGEON, VirginieWITTMANN, Steffen
    • H03M7/30H04N7/30H04N7/32
    • H04N19/42H04N19/122H04N19/124H04N19/129H04N19/18H04N19/60H04N19/91
    • A coding method according to the present invention comprises: transforming an input signal (S110a); scanning and quantizing coefficient values which compose the transformed output signal (S120); and entropy coding the quantized coefficients (S130), wherein the transforming (S110a) includes: generating a first transformed output signal by performing a first transform on the input signal using a first transform coefficient (S112); and generating a second transformed output signal by performing, using a second transform coefficient, a second transform on a first partial signal which is a part of the first transformed output signal, and outputting the transformed output signal including the generated second transformed output signal and a second partial signal that is the remaining part of the first transformed output signal other than the first partial signal (S116a), and a signal corresponding to the second transformed output signal and a signal corresponding to the second partial signal are processed differently in at least one of the scanning, the quantizing, and the entropy coding.
    • 根据本发明的编码方法包括:变换输入信号(S110a); 扫描并量化组成变换输出信号的系数值(S120); 并且对所述量化系数进行熵编码(S130),其中所述变换(S110a)包括:通过使用第一变换系数对所述输入信号执行第一变换来生成第一变换输出信号(S112); 并且通过使用第二变换系数对作为第一变换输出信号的一部分的第一部分信号执行第二变换并且输出包括所生成的第二变换输出信号的变换输出信号以及 第二部分信号是除第一部分信号之外的第一变换输出信号的剩余部分(S116a),并且对应于第二变换输出信号的信号和对应于第二部分信号的信号在至少一个 扫描,量化和熵编码。
    • 109. 发明公开
    • IMAGE CODING APPARATUS, IMAGE CODING CONTROL METHOD AND IMAGE CODING PROGRAM
    • 图像编码装置,图像编码控制方法和图像编码程序
    • EP2410752A1
    • 2012-01-25
    • EP09841875.9
    • 2009-03-19
    • Fujitsu Limited
    • KAZUI, Kimihiko
    • H04N7/32
    • H04N19/436H04N19/105H04N19/114H04N19/115H04N19/126H04N19/147H04N19/15H04N19/159H04N19/172H04N19/177H04N19/196H04N19/61
    • A technique is proposed to produce coded video data with a high coding efficiency and a high picture quality.
      A plurality of coding units perform compression coding of a single source stream of video data by using different coding parameters. A control unit (300) controls those coding units in such a way that all the coding units produce respective interframe coded pictures with identical playback times as a first-coded picture in a picture group (e.g., GOP) and produce identical local decoded pictures based on the respective intraframe coded pictures. A selection decision unit (301) makes a selection, for each picture group, of one of the coded video data outputs from the coding units on the basis of their coding results. According to this selection, a selection unit (400) selectively outputs one of the coded video data outputs from the coding units. This output switching operation is performed at a point immediately before a forward interframe predictive coded picture that appears first of those in a picture group included in each of the coded video data outputs being switched.
    • 提出了一种以高编码效率和高图像质量产生编码视频数据的技术。 多个编码单元通过使用不同的编码参数来对视频数据的单个源流进行压缩编码。 控制单元(300)以这样的方式控制这些编码单元,使得所有编码单元产生具有与图像组(例如,GOP)中的第一编码图像相同的回放时间的相应帧间编码图像,并且基于所生成的相同本地解码图像 在各个帧内编码图像上。 选择判定单元(301)根据每个图像组的编码结果,对来自编码单元的编码视频数据输出之一进行选择。 根据该选择,选择单元(400)选择性地输出来自编码单元的编码视频数据输出之一。 该输出切换操作是在正被切换的每个编码视频数据输出中所包括的图像组中的第一个出现的前向帧间预测编码图像之前的点处执行的。
    • 110. 发明公开
    • IMAGE PROCESSING DEVICE AND METHOD
    • 图像处理设备和方法
    • EP2405659A1
    • 2012-01-11
    • EP10748659.9
    • 2010-02-25
    • Sony Corporation
    • SATO Kazushi
    • H04N7/32
    • H04N19/567H04N19/107H04N19/46H04N19/51H04N19/52H04N19/523H04N19/61
    • The present invention relates to an image processing device and method which enable increase in compressed information to be suppressed, and also enable prediction precision to be improved.
      A precision flag generating unit 93 compares the precision parameters of the motion vector information of a current block from a current motion vector precision determining unit 91, and the precision parameters of the motion vector information of an adjacent block from an adjacent motion vector precision determining unit 92, and generates a precision flag indicating whether the precision of the motion vector information of the current block, and the precision of the motion vector information of the adjacent block agree or differ. This precision flag is output to a lossless encoding unit 66 and encoded along with motion vector information mvd E and so forth in the event that a prediction image in the optimal inter prediction mode has been selected by a prediction image selecting unit 77. The present invention may be applied to an image encoding device which performs encoding using the H.264/AVC system, for example.
    • 本发明涉及一种图像处理装置和方法,其能够增加压缩信息以被抑制,并且还能够提高预测精度。 精度标志生成单元93将来自当前运动矢量精度确定单元91的当前块的运动矢量信息的精度参数与来自相邻运动矢量精度确定单元的相邻块的运动矢量信息的精度参数进行比较 92,并且生成指示当前块的运动矢量信息的精度和相邻块的运动矢量信息的精度是否一致的精度标志。 该精度标志被输出到无损编码单元66,并且在预测图像选择单元77已经选择了最佳帧间预测模式下的预测图像的情况下,与运动矢量信息mvdE等一起被编码。本发明可以 例如应用于使用H.264 / AVC系统执行编码的图像编码装置。