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公开(公告)号：US5825419A
公开(公告)日：1998-10-20
申请号：US723950
申请日：1996-09-26
IPC分类号： H04N19/50 , G06T9/00 , H03M7/36 , H04N19/119 , H04N19/126 , H04N19/139 , H04N19/154 , H04N19/42 , H04N19/423 , H04N19/426 , H04N19/46 , H04N19/577 , H04N19/593 , H04N19/60 , H04N19/61 , H04N19/625 , H04N19/70 , H04N19/86 , H04N19/90 , H04N19/91 , H04N19/98 , H04N7/12 , H04N11/02 , H04N11/04
CPC分类号： H04N19/61
摘要： A coding device of a digital image signal coding highly efficiently a digital image signal by using a bidirectional motion compensating prediction and a DCT (digital cosine transform) transformation thereby compressing information, including inputting reference images for coding images for a bidirectional prediction to a spatial region as data and blocking the data, coding the blocked data, writing the coded data to a memory, reading reference regions for calculating a motion vector for prediction or data of the reference regions for calculating a prediction value from the memory, decoding the read data, and calculating the motion vector or means for calculating the prediction value by using the decoded data.
摘要翻译： 数字图像信号的编码装置通过使用双向运动补偿预测和DCT（数字余弦变换）变换来高效地编码数字图像信号，从而压缩信息，包括将用于双向预测的图像编码的参考图像输入到空间区域 作为数据并阻塞数据，对被阻止的数据进行编码，将编码数据写入存储器，读取用于计算用于预测的运动矢量的参考区域或用于从存储器计算预测值的参考区域的数据，解码读取的数据， 以及通过使用解码数据来计算运动矢量或用于计算预测值的装置。
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32.发明授权Method and apparatus for encoding video signals in 3-D blocks without detecting image motion 失效用于在不检测图像运动的情况下对3-D块中的视频信号进行编码的方法和装置
公开(公告)号：US5485533A
公开(公告)日：1996-01-16
申请号：US41883
申请日：1993-04-02
CPC分类号： H04N19/649 , H04N19/126 , H04N19/62 , H04N19/124 , H04N19/60
摘要： A coding method and apparatus is for coding a digital video signal of interlaced type. Three-dimensional (horizontal, vertical and temporal directions) blocks are constructed for each of a plurality of picture elements, orthogonal transform is performed to each of the three-dimensional blocks and coefficients are coded. Coefficients non-effected by a pseudo-moving part are weighted with a low rate, and coefficients effected by a pseudo-moving part are weighted with high rate. After the vertical positions of picture elements of odd-number fields and those of even-number fields are coincided with each other by an intra-field picture element operation, the digital video signal is formatted and three-dimensional orthogonal transform is performed.
摘要翻译： 一种编码方法和装置，用于编码隔行扫描型数字视频信号。 为多个像素中的每一个构造三维（水平，垂直和时间方向）块，对三维块中的每一个进行正交变换，并对系数进行编码。 由伪移动部分不影响的系数以低速率加权，并且由伪移动部分影响的系数以高速率加权。 在奇数场的像素和偶数场的像素的垂直位置通过场内像素操作相互一致之后，数字视频信号被格式化，并且执行三维正交变换。
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公开(公告)号：US06931069B2
公开(公告)日：2005-08-16
申请号：US09800895
申请日：2001-03-08
CPC分类号： H04N21/23406 , H04N19/115 , H04N19/139 , H04N19/15 , H04N19/176 , H04N19/18 , H04N19/186 , H04N19/60 , H04N19/61 , H04N19/70 , H04N19/91 , H04N21/235 , H04N21/435 , H04N21/44004
摘要： To provide a coding device which does not generate a video packet having only a stuffing but can insert a minimum stuffing to prevent an underflow of a buffer in the case in which a video packet has a length limit. A minimum code volume (Tmin) is set for each VOP and a break of a video packet and an insertion of a stuffing are determined such that a code volume (Sc) of the VOP is not smaller than the minimum code volume (Tmin).
摘要翻译： 为了提供一种编码装置，其不产生仅具有填充的视频分组，但是可以插入最小填充以在视频分组具有长度限制的情况下防止缓冲器的下溢。 为每个VOP设置最小代码量（Tmin），并且确定视频分组的中断并且确定填充的插入，使得VOP的代码量（Sc）不小于最小代码量（Tmin）。
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公开(公告)号：US06829062B2
公开(公告)日：2004-12-07
申请号：US10167462
申请日：2002-06-13
申请人： Masako Asamura , Shuichi Kagawa , Yoshiko Hatano , Hiroaki Sugiura , Kazuya Maeshima , Takashi Okamoto
发明人： Masako Asamura , Shuichi Kagawa , Yoshiko Hatano , Hiroaki Sugiura , Kazuya Maeshima , Takashi Okamoto
IPC分类号： G06K1500
CPC分类号： H04N1/6002 , H04N1/6027
摘要： By changing coefficients of second-order and first-order calculation terms relating to respective hues, and first-order calculation terms in the form of comparison-result data relating to respective inter-hue areas, only the target hue or inter-hue area among the six hues of red, blue, green, yellow, cyan, and magenta, and the six inter-hue areas can be varied, without affecting other hues and inter-hue areas. Thus, the six hues and six inter-hue areas can be corrected independently, and the large-capacity memory is not required.
摘要翻译： 通过改变与各个色相相关的二阶和一阶计算项的系数，以及与各个色调区相关的比较结果数据形式的一阶计算项，仅仅是目标色相或色间间的区域， 红色，蓝色，绿色，黄色，青色和品红色的六种色调，六种色相区域可以变化，而不影响其他色调和色间区域。 因此，可以独立地校正六个色调和六个色间区域，并且不需要大容量存储器。
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公开(公告)号：US06766049B2
公开(公告)日：2004-07-20
申请号：US09349946
申请日：1999-07-08
IPC分类号： G06K900
CPC分类号： H04N9/67 , H04N1/6016 , H04N1/6075
摘要： A color conversion device and method are provided in which six hues and inter-hue areas are corrected independently, and the conversion characteristics can be changed flexibly, and which does not require a large-capacity memory. Coefficients of second-order and first-order calculation terms relating to the respective hues, first-order calculation term using comparison-result data relating to the respective inter-hue areas, and product terms based on the comparison-result data and the hue data are changed so as to change the target hue or inter-hue area, without influencing other hues or inter-hue areas.
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公开(公告)号：US6091460A
公开(公告)日：2000-07-18
申请号：US948589
申请日：1997-10-10
申请人： Yoshiko Hatano , Tadashi Kasezawa , Koji Okazaki , Takashi Shinohara , Hiromu Hasegawa , Hidetoshi Mishima
发明人： Yoshiko Hatano , Tadashi Kasezawa , Koji Okazaki , Takashi Shinohara , Hiromu Hasegawa , Hidetoshi Mishima
CPC分类号： H04N19/105 , H04N19/107 , H04N19/112 , H04N19/137 , H04N19/142 , H04N19/179 , H04N19/51 , H04N19/57 , H04N19/577 , H04N19/87 , H04N5/145
摘要： In an image signal encoding method for encoding an image signal using motion compensation, a motion vector is found by means of a block matching method, a first distortion SEmc of motion compensated prediction associated with the motion vector, and a second distortion SEnomc of prediction without motion compensation are detected, the motion vector is used for for inter-picture prediction encoding when SEnomc>SEmc+K, with K being a constant greater than 0, and a vector having a value zero is used, in place of the motion vector, for inter-picture prediction encoding when SEnomc.ltoreq.SEmc+K. In another aspect, a speed of motion in a sequence of pictures is detected, and for a part of the sequence of pictures detected to contain a quick motion, the prediction encoding is performed using one-way prediction encoding, and for a part of the sequence of pictures without a quick motion, prediction encoding is performed using bi-directional prediction encoding. In another aspect, the image signal is subsampled for each field, and a motion vector is determined using the field-subsampled image signal.
摘要翻译： 在用于使用运动补偿对图像信号进行编码的图像信号编码方法中，通过块匹配方法，与运动矢量相关联的运动补偿预测的第一失真SEmc以及无运动补偿预测的第二失真SEnomc，找到运动矢量 检测到运动补偿时，运动矢量用于SEnomc> SEmc + K时的画面间预测编码，其中K为大于0的常数，使用值为零的矢量代替运动矢量， 用于当SEnomc
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公开(公告)号：US5543845A
公开(公告)日：1996-08-06
申请号：US430280
申请日：1995-04-28
CPC分类号： H04N19/649 , H04N19/186 , H04N19/60 , H04N19/61 , H04N19/62 , H04N19/645 , H04N19/13 , H04N19/91
摘要： An encoding apparatus which structures a band-divided digital image signal into three-dimensional blocks each having a plurality of pixels, discriminates each three-dimensional block between a moving image block and a static image block, and, in the case of a static image block, encodes only the three-dimensional blocks in the lower frequency bands while dropping the three-dimensional blocks in the higher frequency bands. However, of moving image blocks, blocks having a large pixel variance value are encoded as effective image blocks. Also, different size weightings are performed to transform coefficients depending on whether the block is discriminated as a moving image block or a static image block. Furthermore, shuffling is performed on a group of moving image blocks and a group of static image blocks independently of each other, and the transform coefficients for the static image blocks are quantized after quantizing all transform coefficients for the moving image blocks.
摘要翻译： 将分割后的数字图像信号构成为具有多个像素的三维块的编码装置，判别运动图像块和静止图像块之间的每个三维块，并且在静态图像的情况下 块，仅在较低频带中编码三维块，同时丢弃较高频带中的三维块。 然而，对于运动图像块，具有大像素方差值的块被编码为有效图像块。 此外，根据块被区分为运动图像块还是静态图像块，执行不同的大小加权来变换系数。 此外，对一组运动图像块和一组静态图像块彼此独立地执行混洗，并且在对运动图像块的所有变换系数进行量化之后量化静态图像块的变换系数。
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