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81. 发明授权

US5987182A Markov model image encoding device and method 失效
标题翻译：马尔可夫模型图像编码装置及方法
公开(公告)号：US5987182A
公开(公告)日：1999-11-16
申请号：US876484
申请日：1997-06-16
申请人： Shunichi Kimura , Setsu Kunitake , Taro Yokose , Yutaka Koshi , Koh Kamizawa
发明人： Shunichi Kimura , Setsu Kunitake , Taro Yokose , Yutaka Koshi , Koh Kamizawa
IPC分类号： H04N19/50 , G06T9/00 , H03M7/40 , H04N1/41 , H04N1/417 , H04N19/102 , H04N19/13 , H04N19/167 , H04N19/196 , H04N19/423 , H04N19/91 , G06K9/36
CPC分类号： G06T9/00
摘要： A plurality of reference pixel extracting means check their corresponding reference pixel ranges and pixel values in predetermined auxiliary regions. Reference pixel range selecting means selects a reference pixel range based on the checked pixel values. When the number of types of pixel values for an input image is found to be locally low in the selected reference pixel range, the number of reference pixels is increased. On the other hand, when the number of types of the pixel values for the input image is found to be locally large, the number of reference pixels is decreased. As a result, states can be generated by a Markov model image encoding system capable of improving encoding efficiency without increasing the number of the states sharply. Owing to the above construction, even when the number of tones for the input image is high upon Markov model image encoding, the number of reference pixels can be increased without abruptly increasing the number of states later on to improve compression efficiency.
摘要翻译：多个参考像素提取装置在预定的辅助区域中检查其对应的参考像素范围和像素值。参考像素范围选择装置基于所检查的像素值来选择参考像素范围。当在所选择的参考像素范围中发现输入图像的像素值的数量在本地较低时，参考像素的数量增加。另一方面，当发现输入图像的像素值的类型的数量局部地大时，参考像素的数量减少。结果，可以通过能够提高编码效率的马尔可夫模型图像编码系统来生成状态，而不会急剧增加状态数。由于上述结构，即使在马尔科夫模型图像编码时输入图像的色调数量高的情况下，也可以增加参考像素的数量而不会稍后突然增加状态数来提高压缩效率。

82. 发明授权

US5933105A Context-based arithmetic encoding/decoding method and apparatus 失效
标题翻译：基于上下文的算术编码/解码方法和装置
公开(公告)号：US5933105A
公开(公告)日：1999-08-03
申请号：US12631
申请日：1998-01-23
申请人： Sung-Ryul Cho
发明人： Sung-Ryul Cho
IPC分类号： G06T9/00 , H04N7/26 , H04N7/30 , H03M7/30 , H04N1/417
CPC分类号： H04N19/60 , H04N19/13 , H04N19/20 , H04N19/91
摘要： An apparatus encodes a binary shape signal by using a modified context-based arithmetic encoding technique. The apparatus computes a context number of each binary pixel in the binary shape signal based on its corresponding context. Then, a probability corresponding to the context number is detected and a state of each binary pixel is determined by comparing the probability with a preset threshold value. Furthermore, a predicted pixel value corresponding to each binary pixel is decided based on the probability. The predicted pixel value is compared with an original pixel value of each binary pixel to thereby output a mapping value representing whether the predicted pixel value is identical to the original pixel value or not. The apparatus generates a first and a second sequences by rearranging the mapping values of the binary pixels in the binary shape signal according to the states of the binary pixels and assigns adaptive probability sets to the first and the second sequences, respectively. The first and the second sequences are arithmetically encoded based on the adaptive probability sets to thereby produce an encoded binary shape signal.
摘要翻译：一种装置通过使用经修改的基于上下文的算术编码技术对二进制形状信号进行编码。该装置基于其对应的上下文来计算二进制形状信号中的每个二进制像素的上下文编号。然后，检测与上下文编号对应的概率，并且通过将概率与预设阈值进行比较来确定每个二进制像素的状态。此外，基于概率来决定与每个二进制像素对应的预测像素值。将预测像素值与每个二进制像素的原始像素值进行比较，从而输出表示预测像素值是否与原始像素值相同的映射值。该装置通过根据二进制像素的状态重新排列二进制形状信号中的二进制像素的映射值并分别将自适应概率集分别分配给第一和第二序列来产生第一和第二序列。第一和第二序列基于自适应概率集进行算术编码，从而产生编码的二进制形状信号。

83. 发明授权

US5917956A Image processing apparatus capable of removing an edge portion from a multi-level color signal based on a binary color signal 失效
标题翻译：能够基于二值颜色信号从多级彩色信号中去除边缘部分的图像处理装置
公开(公告)号：US5917956A
公开(公告)日：1999-06-29
申请号：US908379
申请日：1997-08-07
申请人： Hidefumi Ohsawa , Yasuji Hirabayashi , Tadashi Yoshida
发明人： Hidefumi Ohsawa , Yasuji Hirabayashi , Tadashi Yoshida
IPC分类号： G06T9/00 , H03M7/12 , H04N1/41 , H04N1/64 , H04N7/26 , H04N1/417
CPC分类号： H04N1/642 , H03M7/12 , H04N19/30
摘要： An image processing apparatus comprising binarization means for converting a multi-level color signal into binary form, removal means for removing edge component from the multi-level color signal, based on a binary color signal from said binarization means, and encoder means for encoding the binary color signal from said binarization means and the multi-level color signal having edge component removed with said removal means.
摘要翻译：一种图像处理装置，包括：二值化装置，用于将多级彩色信号转换为二进制形式;基于来自所述二进制化装置的二进制彩色信号从多级彩色信号中去除边缘分量的去除装置;以及编码装置，来自所述二值化装置的二进制彩色信号和具有用所述去除装置去除的边缘分量的多级彩色信号。

84. 发明授权

US5867600A Image coding method and system for providing reduced bit rate arithmetic codes 失效
标题翻译：用于提供降低的比特率算术代码的图像编码方法和系统
公开(公告)号：US5867600A
公开(公告)日：1999-02-02
申请号：US748490
申请日：1996-11-08
申请人： Takahiro Hongu
发明人： Takahiro Hongu
IPC分类号： H04N1/40 , G06T9/00 , H03M7/40 , H04N1/41 , H04N1/413 , H04N1/417 , G06K9/36
CPC分类号： G06T9/004 , H04N1/417
摘要： A bi-level image coder for providing reduced bit rate arithmetic codes is disclosed, wherein each page of image to be coded is divided into a plurality of areas such as line groups, or blocks, and an arithmetic coder codes each of input pixels (the pixel S.sub.i) by using a predicted value of MPS (most probable symbol) and a predicted probability of LPS (least probable symbol) occurrence which are generated with a template and a LPS predicted probability table. The pixel attribute of the pixel S.sub.i is determined to one of a character image attribute, a dither/dot image attribute and a halftoned image attribute based on statistical properties of the area of the pixel S.sub.i. One of predetermined LPS predicted probability tables and one of predetermined templates are selected for each of the areas in operation. The coder may be so arranged as to following the JBIG standard. In one embodiment, a specific pixel of the template used for context data generation is moved to a position highly correlated with the pixel to be coded.
摘要翻译：公开了一种用于提供降低的比特率算术代码的双级图像编码器，其中要编码的图像的每一页被划分成多个区域，例如线组或块，并且算术编码器对输入像素（的像素Si）通过使用由模板和LPS预测概率表生成的MPS（最可能符号）的预测值和LPS（最不可能符号）出现的预测概率。基于像素Si的区域的统计特性，将像素Si的像素属性确定为字符图像属性，抖动/点图像属性和半色调图像属性中的一个。为操作中的每个区域选择预定的LPS预测概率表之一和预定模板之一。编码器可以被布置为遵循JBIG标准。在一个实施例中，用于上下文数据生成的模板的特定像素被移动到与要编码的像素高度相关的位置。

85. 发明授权

US5859931A Image compression and decompression using predictive coding and error diffusion 失效
标题翻译：使用预测编码和误差扩散的图像压缩和解压缩
公开(公告)号：US5859931A
公开(公告)日：1999-01-12
申请号：US653981
申请日：1996-05-28
申请人： Zhigang Fan , Ying-wei Lin
发明人： Zhigang Fan , Ying-wei Lin
IPC分类号： H04N1/417 , G06T9/00 , H03M7/46 , H04N1/41 , G06K9/36
CPC分类号： H04N1/4105 , G06T9/004 , G06T9/005
摘要： An encoding/compression technique using a combination of predictive coding and run length encoding allows for efficient compression of images produced by error diffusion.
摘要翻译：使用预测编码和游程长度编码的组合的编码/压缩技术允许有效地压缩由误差扩散产生的图像。

86. 发明授权

US5850259A Predictive coding apparatus 失效
标题翻译：预测编码装置
公开(公告)号：US5850259A
公开(公告)日：1998-12-15
申请号：US857488
申请日：1997-05-16
申请人： Kenji Sugiyama
发明人： Kenji Sugiyama
IPC分类号： H04N19/50 , G06T9/00 , H04N1/415 , H04N1/417 , H04N19/102 , H04N19/126 , H04N19/134 , H04N19/137 , H04N19/14 , H04N19/176 , H04N19/189 , H04N19/196 , H04N19/423 , H04N19/503 , H04N19/577 , H04N19/60 , H04N19/61 , H04N19/625 , H04N19/86 , H04N19/91 , H04N19/93 , H04N7/50
CPC分类号： H04N19/14 , H04N19/124 , H04N19/132 , H04N19/176 , H04N19/61 , H04N19/146 , H04N19/152
摘要： A predictive coding apparatus encodes an input video signal. A prediction error signal of the input video signal is generated by at least another video signal which is coded before or after the input video signal. The prediction error signal is translated into codes of a fixed length with a predetermined quantizing step width. Activity of the prediction error signal is detected and compared with a reference value which depends on the quantizing step width. The codes of the fixed length or predetermined codes of zero values are selected per pixel block in accordance with the comparison result, the selected codes being used as the coded other video signal. The selected codes are translated into codes of variable lengths which are outputted as a coded video signal. Detected instead of the activity may be the maximum value and the number of non-zero values per pixel block of the codes of the fixed length or the maximum value per pixel block and the sum of the maximum values in pixel blocks of the codes of the fixed length which are compared with different reference values.
摘要翻译：预测编码装置对输入视频信号进行编码。输入视频信号的预测误差信号由在输入视频信号之前或之后被编码的至少另一个视频信号产生。预测误差信号被转换成具有预定量化步长的固定长度的码。检测出预测误差信号的活动并将其与取决于量化步长的参考值进行比较。根据比较结果，每像素块选择固定长度的代码或零值的预定代码，所选择的代码被用作编码的其他视频信号。所选择的代码被转换为作为编码视频信号输出的可变长度的代码。检测而不是活动可以是固定长度的代码或每个像素块的最大值的每像素块的最大值和非零值的数量以及代码的像素块中的最大值的总和固定长度与不同的参考值进行比较。

87. 发明授权

US5832121A Method and apparatus for video data compression 失效
公开(公告)号：US5832121A
公开(公告)日：1998-11-03
申请号：US899958
申请日：1997-07-24
申请人： Yuji Ando
发明人： Yuji Ando
IPC分类号： H04N19/50 , G06T9/00 , H03M7/30 , H03M7/36 , H04N19/103 , H04N19/105 , H04N19/107 , H04N19/114 , H04N19/142 , H04N19/146 , H04N19/159 , H04N19/176 , H04N19/177 , H04N19/196 , H04N19/423 , H04N19/503 , H04N19/51 , H04N19/577 , H04N19/61 , H04N19/625 , H04N19/85 , H04N19/87 , H04N19/91 , G06K9/36 , G06K9/46 , H04N1/417 , H04N5/14
CPC分类号： H04N19/87 , H04N19/107 , H04N19/114 , H04N19/124 , H04N19/142 , H04N19/152 , H04N19/176 , H04N19/177 , H04N19/179 , H04N19/503 , H04N19/61 , H04N19/146
摘要： A method and apparatus for encoding a picture advantageously employed for encoding a picture. A plurality of input picture data are stored, and the quantity of the information of the input picture data from the plural stored picture data is evaluated for detecting a scene change. A GOP of a preset unit length, made up of a picture formed by compression by intra-frame coding and a picture formed by compression by inter-frame predictive coding, is selected based upon a scene change detection output and the input picture data is encoded in a pre-set manner in accordance with the selected GOP. By detecting a scene change and selecting the intra-frame coding as a compression method responsive to scene change detection, the compression efficiency is raised at a scene change portion of the input picture data where the correlation between previous and succeeding pictures is lowered.

88. 发明授权

US5781136A Digital information encoding device, digital information decoding device, digital information encoding/decoding device, digital information encoding method, and digital information decoding method 失效
标题翻译：数字信息编码装置，数字信息解码装置，数字信息编码/解码装置，数字信息编码方法以及数字信息解码方法
公开(公告)号：US5781136A
公开(公告)日：1998-07-14
申请号：US768732
申请日：1996-12-18
申请人： Yoshifumi Imanaka , Yoshiko Isu
发明人： Yoshifumi Imanaka , Yoshiko Isu
IPC分类号： H04N1/413 , H03M7/30 , H04N1/417 , H04N1/44
CPC分类号： H04N1/417
摘要： A digital information encoding device used in a QM-Coder comprises a context table storage means for storing a plurality of storing data comprising a prediction symbol and an LSZ data, an arithmetic calculation means for receiving the storing data which is read out according to the address based on a context from a context generation means, and a renewal data generation means comprising a data storage device means, an LSZ renewal logic circuit, and an MPS renewal logic circuit for generating a renewal data based on a storing data and a prediction conversion signal from the arithmetic calculation means. The renewal data is written to the storing data in the context table storage means according to the address based on the context from the context storage means. The digital information encoding device can obtain a high speed processing, which is suitably integrated into a semiconductor integrated circuit.
摘要翻译：在QM编码器中使用的数字信息编码装置包括用于存储包括预测符号和LSZ数据的多个存储数据的上下文表存储装置，用于接收根据地址读出的存储数据的算术计算装置基于来自上下文生成装置的上下文，以及更新数据生成装置，包括数据存储装置装置，LSZ更新逻辑电路和用于基于存储数据和预测转换信号来生成更新数据的MPS更新逻辑电路从算术计算装置。根据来自上下文存储装置的上下文，根据地址将更新数据写入上下文表存储装置中的存储数据。数字信息编码装置可以获得适当地集成到半导体集成电路中的高速处理。

89. 发明授权

US5757966A High-speed encoder 失效
标题翻译：高速编码器
公开(公告)号：US5757966A
公开(公告)日：1998-05-26
申请号：US502840
申请日：1995-07-11
申请人： Jean S. Kao , Sam S. Su , Danny T. Ong
发明人： Jean S. Kao , Sam S. Su , Danny T. Ong
IPC分类号： H04N1/417 , G06T9/00 , H03M7/40 , G06K9/36
CPC分类号： G06T9/005
摘要： An encoder for encoding four bits of uncompressed data in one clock cycle generates one code or in parallel a plurality of codes if the bits can be represented by a code or by a plurality of codes and keeps the bits that can not be represented by a code unaltered. On the following clock cycle, the unaltered bits from the previous clock cycle will be combined with a new set of four bits of data and the cumulative bits will be converted to a code if they can be represented by a code and if they can not be represented by a code, they will be stored until the next clock cycle. The process of storing the cumulative number of bits will be continued until the cumulative number of bits can be represented by a code.
摘要翻译：用于在一个时钟周期中对4位未压缩数据进行编码的编码器，如果这些位可以由代码或多个代码表示，并且保持不能被代码表示的位，则产生一个代码或并行地多个代码未改变在下一个时钟周期中，来自前一个时钟周期的未改变位将与一组新的四位数据组合，并且累加位将被转换为代码，如果它们可以由代码表示，并且如果它们不能由代码表示，它们将被存储直到下一个时钟周期。存储累积位数的过程将继续进行，直到累积位数可以由代码表示。

90. 发明授权

US5751743A Information transmission method and apparatus 失效
标题翻译：信息传输方法和装置
公开(公告)号：US5751743A
公开(公告)日：1998-05-12
申请号：US955035
申请日：1992-10-01
申请人： Hiroshi Takizawa
发明人： Hiroshi Takizawa
IPC分类号： G06T9/00 , H04L1/00 , H04N1/00 , H04N1/333 , H04N1/415 , H04N1/417 , H04N19/00 , H04N19/102 , H04N19/126 , H04N19/146 , H04N19/65 , H04N19/91 , H03M13/00
CPC分类号： H04L1/0057 , H04L1/0041 , H04N1/00095 , H04N1/333 , H04N1/417
摘要： In an information transmission method and apparatus, information is transmitted in units of a block including information codes and error-correcting check codes, and the transmission speed is switched by changing the number of blocks to be transmitted per unit time without changing the amount of information of the information codes and the amount of information of the error-correcting check codes within each block.
摘要翻译：在信息发送方法和装置中，以包含信息码和纠错校验码的块为单位发送信息，通过改变每单位时间发送的块的数量来切换发送速度，而不改变信息量的信息代码和每个块内的纠错校验码的信息量。

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