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    Method for quantizing compressed video signals
    82.
    发明授权
    Method for quantizing compressed video signals 失效
    压缩视频信号量化方法

    公开(公告)号：US5751359A

    公开(公告)日：1998-05-12

    申请号：US615422

    申请日：1996-03-14

    申请人： Teruhiko Suzuki ,  Yoichi Yagasaki

    发明人： Teruhiko Suzuki ,  Yoichi Yagasaki

    IPC分类号： H04N5/92 ,  G06T9/00 ,  G11B20/10 ,  H04N19/102 ,  H04N19/103 ,  H04N19/115 ,  H04N19/126 ,  H04N19/134 ,  H04N19/136 ,  H04N19/137 ,  H04N19/14 ,  H04N19/152 ,  H04N19/159 ,  H04N19/176 ,  H04N19/189 ,  H04N19/196 ,  H04N19/423 ,  H04N19/46 ,  H04N19/50 ,  H04N19/51 ,  H04N19/573 ,  H04N19/577 ,  H04N19/593 ,  H04N19/61 ,  H04N19/625 ,  H04N19/70 ,  H04N19/85 ,  H04N19/90 ,  H04N19/91 ,  H04N19/98 ,  H04N7/30

    CPC分类号： H04N19/40 ,  H04N19/126 ,  H04N19/184 ,  H04N19/61 ,  H04N19/124

    摘要： A method for encoding a 10-bit based picture using a circuitry or devices inherently designed for handing an 8-bit based picture. The 10-bit based input picture data is motion-compensated with 8 bits in a motion compensation circuit. From the motion-compensated picture data, representative value data and the quantization width are found by an in-bloc representative value calculation circuit and a block quantization width calculation circuit, respectively. A difference between the picture data and the representative value data is found by an adder. The difference is sent to a block quantizer where first 8-bit quantized data is generated on the basis of the quantization width so that the representative value is at a mid point of the quantization width. The first quantized data is transformed by a discrete cosine transform circuit of a difference signal encoder to generate transform coefficients which are quantized by a quantizer to generate second quantized data. A variable length encoding circuit encodes the representative value data, quantization width and the second quantized data. The 10-bit based picture can be encoded by the circuitry or the devices designed for an 8-bit based picture without substantially deteriorating the picture quality.

    摘要翻译： 一种使用固有地设计用于处理基于8位的图像的电路或设备来编码基于10位的图像的方法。 基于10位的输入图像数据在运动补偿电路中以8位进行运动补偿。 通过运动补偿图像数据，代表值数据和量化宽度分别由块内代表值计算电路和块量化宽度计算电路求出。 通过加法器找出图像数据和代表值数据之间的差异。 该差异被发送到块量化器，其中基于量化宽度生成第一8位量化数据，使得代表值处于量化宽度的中点。 第一量化数据由差分信号编码器的离散余弦变换电路变换，以产生由量化器量化以产生第二量化数据的变换系数。 可变长度编码电路对代表值数据，量化宽度和第二量化数据进行编码。 基于10位的图像可以由设计用于基于8位的图像的电路或设备进行编码，而不会显着降低图像质量。

    Coding device and method, decoding device and method, recording medium, and program
    84.
    发明授权
    Coding device and method, decoding device and method, recording medium, and program 有权
    编码装置和方法，解码装置和方法，记录介质和程序

    公开(公告)号：US08654862B2

    公开(公告)日：2014-02-18

    申请号：US13558758

    申请日：2012-07-26

    申请人： Kazushi Sato ,  Teruhiko Suzuki ,  Osamu Sunohara ,  Yoichi Yagasaki

    发明人： Kazushi Sato ,  Teruhiko Suzuki ,  Osamu Sunohara ,  Yoichi Yagasaki

    IPC分类号： H04N7/12

    CPC分类号： H04N19/52 ,  H03M7/4006 ,  H04N19/13 ,  H04N19/16 ,  H04N19/176 ,  H04N19/513 ,  H04N19/537

    摘要： An encoding apparatus and an encoding method, a decoding apparatus and a decoding method, a recording medium, and a program suitable for encoding image signals with a higher compression ratio for transmission or accumulation. In an arithmetic coding section, from among the syntax elements of input image compression information, the frame/field flag is first encoded by a frame/field flag context model. When the macroblock to be processed is subjected to frame-based encoding, a frame-based context model, specified in the current H.26L standard, is applied. On the other hand, when the macroblock to be processed is subjected to field-based encoding, a field-based context model is applied for the syntax elements described below. The present invention is applied to an encoder for encoding image information and a decoder for decoding image information.

    摘要翻译： 一种编码装置和编码方法，解码装置和解码方法，记录介质和适用于编码用于传输或累积的较高压缩比的图像信号的程序。 在算术编码部分中，从输入图像压缩信息的语法元素中，帧/场标志首先由帧/场标志上下文模型编码。 当要处理的宏块进行基于帧的编码时，应用在当前H.26L标准中指定的基于帧的上下文模型。 另一方面，当对待处理的宏块进行基于场的编码时，对于下面描述的语法元素应用基于场的上下文模型。 本发明应用于编码图像信息的编码器和解码图像信息的解码器。