专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明申请

WO1996008928A1 VIDEO COMPRESSION METHOD 审中-公开
标题翻译：视频压缩方法
公开(公告)号：WO1996008928A1
公开(公告)日：1996-03-21
申请号：PCT/FI1995000498
申请日：1995-09-13
申请人： NOKIA MOBILE PHONES LTD. , HAIKONEN, Pentti , JUHOLA, Janne , LATVA-RASKU, Petri
发明人： NOKIA MOBILE PHONES LTD.
IPC分类号： H04N07/26
CPC分类号： H04N19/527 , H04N19/86 , H04N19/94
摘要： The invention relates to a video compression method, which can be applied especially in the transfer of a video signal at low transfer rates. In the method, the video picture is divided into blocks of a certain size. In a predefined block catalogue the model block that most resembles the picture block is chosen, and the picture block is represented by the code that is given to said model block. In connection with the method, different methods for a closer definition can be used if the difference between the picture block and the model block exceeds a limiting value. In reconstructing the block, the model block corresponding to the code is searched for. The reconstruction can be improved by interpolating on the basis of information from adjacent blocks.
摘要翻译：本发明涉及一种视频压缩方法，可以特别适用于以低传输速率传输视频信号。在该方法中，视频图像被分成一定大小的块。在预定义的块目录中，选择最类似于图像块的模型块，并且图像块由给予所述模型块的代码表示。关于该方法，如果图像块和模型块之间的差异超过限制值，则可以使用用于更接近的定义的不同方法。在重建块时，搜索与代码相对应的模型块。可以通过基于来自相邻块的信息进行内插来改进重建。

82. 发明申请

WO1993020651A1 METHOD AND APPARATUS FOR REAL TIME COMPRESSION AND DECOMPRESSION OF A DIGITAL MOTION VIDEO SIGNAL 审中-公开
标题翻译：数字运动视频信号实时压缩和分解的方法与装置
公开(公告)号：WO1993020651A1
公开(公告)日：1993-10-14
申请号：PCT/US1993002583
申请日：1993-03-19
申请人： INTEL CORPORATION
发明人： INTEL CORPORATION , KEITH, Michael
IPC分类号： H04N07/13
CPC分类号： H04N19/507 , H04N19/13 , H04N19/60 , H04N19/91 , H04N19/93 , H04N19/94
摘要： A bitstream (100) representative of at least one digital video image is decoded in real time by providing a code-book index from the bitstream (110), applying the code-book index to an index table to determine an index value (120), and comparing the index value to a first predetermined threshold (130). If the index value is greater than the predetermined threshold, then at least one current pixel is determined by copying a corresponding previous pixel into the location of at least one current pixel (140); otherwise the index value is applied to a vector table to determine at least one vector value (150) and a current pixel is determined from the vector value and a corresponding previous pixel (160). A digital video image is encoded in real time by selecting at least one pixel for encoding and determining at least one difference value between the selected pixel and at least one corresponding previous pixel (344). An index value corresponding to the location in a first table of the difference value is calculated (346). If the index value is equal to a first predetermined value then a run-length counter is incremented by a second predetermined value and the process is repeated until the index value is not equal to the first predetermined value. The run-length counter is then encoded. If the index value is not equal to the first predetermined value then the index value is encoded.
摘要翻译：代表至少一个数字视频图像的比特流（100）通过从比特流（110）提供代码簿索引来实时解码，将代码簿索引应用于索引表以确定索引值（120），并且将所述索引值与第一预定阈值（130）进行比较。如果索引值大于预定阈值，则通过将对应的先前像素复制到至少一个当前像素（140）的位置来确定至少一个当前像素; 否则，将索引值应用于向量表以确定至少一个向量值（150），并且根据向量值和相应的先前像素（160）确定当前像素。数字视频图像通过选择用于编码的至少一个像素并确定所选择的像素与至少一个对应的先前像素之间的至少一个差值（344）来实时编码。计算与差值的第一表中的位置相对应的索引值（346）。如果索引值等于第一预定值，则游程长度计数器增加第二预定值，并且重复处理直到索引值不等于第一预定值。然后对游程长度计数器进行编码。如果索引值不等于第一预定值，则编码索引值。

83. 发明申请

WO1993010638A1 VECTOR QUANTIZATION METHOD EMPLOYING MIRRORED INPUT VECTORS TO SEARCH CODEBOOK 审中-公开
标题翻译：使用镜像输入向量搜索代码的矢量量化方法
公开(公告)号：WO1993010638A1
公开(公告)日：1993-05-27
申请号：PCT/US1992009571
申请日：1992-11-06
申请人： SCIENTIFIC-ATLANTA, INC.
发明人： SCIENTIFIC-ATLANTA, INC. , ISRAELSEN, Paul, Dee , LUCAS, Keith
IPC分类号： H04N07/167
CPC分类号： G06T9/008 , H04N7/20 , H04N19/94
摘要： A vector quantization method employs mirrored input vectors to increase the reproduction quality of transmitted vector quantized data. A codevector (131) is selected from a vector quantization codebook for each possible orientation of an input vector. The codevector having the smallest distortion (142) relative to the input vector is selected for transmission (148). An identification code identifying the selected orientation is also transmitted (148).

84. 发明申请

WO1993010636A1 IMAGE COMPRESSION METHOD AND APPARATUS EMPLOYING DISTORTION ADAPTIVE TREE SEARCH VECTOR QUANTIZATION 审中-公开
标题翻译：图像压缩方法和设备使用失真自适应树搜索矢量量化
公开(公告)号：WO1993010636A1
公开(公告)日：1993-05-27
申请号：PCT/US1992009840
申请日：1992-11-17
申请人： UTAH STATE UNIVERSITY FOUNDATION
发明人： UTAH STATE UNIVERSITY FOUNDATION , ISRAELSEN, Paul, Dee
IPC分类号： H04N07/13
CPC分类号： H03M7/3082 , G06T9/40 , H04N19/124 , H04N19/13 , H04N19/146 , H04N19/152 , H04N19/176 , H04N19/184 , H04N19/60 , H04N19/91 , H04N19/94
摘要： A variable rate vector quantization method employs a tree structured codebook (114). The level of the codebook from which codevectors are selected is determined by a threshold (116). The threshold varies according to the fullness of a buffer (118) which stores vector quantized data to be transmitted.

85. 发明申请

WO1993010632A1 IMAGE COMPRESSION EMPLOYING DISTORTION-ADAPTIVE TREE SEARCH VECTOR QUANTIZATION WITH AVOIDANCE OF REDUNDANT VECTOR DATA TRANSMISSION 审中-公开
标题翻译：图像压缩使用失真自适应树搜索矢量量化避免冗余矢量数据传输
公开(公告)号：WO1993010632A1
公开(公告)日：1993-05-27
申请号：PCT/US1992009622
申请日：1992-11-06
申请人： SCIENTIFIC-ATLANTA, INC.
发明人： SCIENTIFIC-ATLANTA, INC. , ISRAELSEN, Paul, D.
IPC分类号： H04N07/12
CPC分类号： H03M7/3082 , H04N7/10 , H04N7/20 , H04N19/94
摘要： A variable rate vector quantization apparatus (22) and method employs a tree structured codebook. Code vectors are selected from different levels of the codebook according to the value of a threshold. The value of the treshold is periodically adjusted according to the fullness of a buffer that stores vector quantized data to be transmitted. According to the invention, vector quantized data for redundant, or similar vectors is not transmitted. Rather, a "copy last vector" instruction is transmitted for these vectors to achieve further data compression. A method of mean removal from vectors to be vector quantized is also disclosed.
摘要翻译：可变速率矢量量化装置（22）和方法采用树结构码本。根据阈值的值，从码本的不同级别选择码矢量。根据存储要发送的矢量量化数据的缓冲器的丰满度周期性地调整阈值。根据本发明，用于冗余或类似向量的矢量量化数据不被发送。相反，为这些向量发送“复制最后向量”指令以实现进一步的数据压缩。还公开了从载体量化的载体中平均去除的方法。

86. 发明申请

WO1993010631A1 METHOD FOR SELECTING REPRODUCTION QUALITY OF TRANSMITTED VECTOR QUANTIZED DATA 审中-公开
标题翻译：选择传输矢量量化数据生成质量的方法
公开(公告)号：WO1993010631A1
公开(公告)日：1993-05-27
申请号：PCT/US1992009995
申请日：1992-11-17
申请人： SCIENTIFIC-ATLANTA, INC.
发明人： SCIENTIFIC-ATLANTA, INC. , ISRAELSEN, Paul, D. , LUCAS, Keith
IPC分类号： H04N07/10
CPC分类号： H04N21/2383 , G06T9/008 , H04N7/10 , H04N19/94 , H04N21/4382
摘要： A method of communicating data from a first location (112) to a second location (e.g. 114 or 116) employing a vector quantization data compression technique that allows users to select the reproduction quality of the transmitted vector quantized data. According to the method, data is encoded (120) (compressed) from the last level of a first tree search vector quantization codebook at the first location (112). A second tree search vector quantization codebook is provided (126a, 126b) at the second location (114, 116) having a number of levels equal to or less than the number of levels in the first codebook. Vector quantized data received at the second location (114, 116) is truncated, if necessary, for use with the second codebook. The reproduction quality of the transmitted vector quantized data is a function of the number of levels in the second codebook.

87. 发明申请

WO1992021101A1 CONTINUOUS-TONE IMAGE COMPRESSION 审中-公开
标题翻译：连续图像压缩
公开(公告)号：WO1992021101A1
公开(公告)日：1992-11-26
申请号：PCT/US1992003963
申请日：1992-05-12
申请人： THE ANALYTIC SCIENCES CORPORATION
发明人： THE ANALYTIC SCIENCES CORPORATION , ORMSBY, Charles, Clark , BOONE, Stephen, Wayne , HARDIN, Clyde, Durham, Jr. , ZABELE, George, Stephen
IPC分类号： G06K09/00
CPC分类号： H04N1/64 , H04N19/126 , H04N19/146 , H04N19/15 , H04N19/176 , H04N19/186 , H04N19/527 , H04N19/60 , H04N19/86 , H04N19/94
摘要： Continuous-tone images, represented by original data files (16) are compressed by (1) transforming by a lapped orthogonal transform (50) the original file of data to generate a transform file of coefficients (58, 60, 2) quantizing (63, 64) the transform coefficients, and (3) coding (67, 69) the quantized values to generate a compressed data file (20, 25), the lapped orthogonal transform being arranged to compute all transform coefficients by means only of bit shifts, negations, and adds. In another aspect, the quantization and coding are performed on groups of transformed coefficients.
摘要翻译：由原始数据文件（16）表示的连续色调图像通过（1）通过重叠正交变换（50）原始数据文件进行变换来压缩，以生成量化的系数（58,60,2）的变换文件（63 ，64）变换系数，以及（3）编码（67,69）所述量化值以生成压缩数据文件（20,25），所述重叠正交变换被布置为仅通过位移而计算所有变换系数，否定和补充。在另一方面，对经变换的系数组进行量化和编码。

88. 发明申请

WO2019061537A1 METHOD AND APPARATUS FOR DERIVATION OF TEMPORAL MOTION DATA CANDIDATES IN VIDEO CODING 审中-公开
公开(公告)号：WO2019061537A1
公开(公告)日：2019-04-04
申请号：PCT/CN2017/105133
申请日：2017-09-30
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： CHEN, Xu , AN, Jicheng , ZHENG, Jianhua
IPC分类号： H04N19/94
CPC分类号： H04N19/52 , H04N19/503 , H04N19/94
摘要： A method for deriving of one or more temporal motion data (TMD) candidates for a current block in video coding or video decoding is disclosed. It is determined whether a first prediction block at a primary TMD position is available, wherein the primary TMD position is a bottom right neighboring position outside a co-located block；and motion data of the primary TMD position and/or motion data of a secondary TMD position may be selected as the TMD candidates when the first prediction block at the primary TMD position is available and when the number of current available motion data candidates for an inter-prediction candidate list is smaller than a target number, wherein the secondary TMD position is a central position inside the co-located block. This method allows for providing more meaningful motion data candidates for inclusion in the inter-prediction candidate list for the current block, thus the coding performance of video data can be improved.

89. 发明申请

WO2018083183A1 INTRA COMPRESSION OF SCREEN CONTENT BASED ON SOFT CONTEXT FORMATION 审中-公开
标题翻译：基于软件语境形成的屏幕内容压缩
公开(公告)号：WO2018083183A1
公开(公告)日：2018-05-11
申请号：PCT/EP2017/078074
申请日：2017-11-02
申请人： DEUTSCHE TELEKOM AG
发明人： STRUTZ, Tilo
IPC分类号： H04N19/13 , H04N19/593 , H04N19/94
CPC分类号： H04N19/13 , H04N19/593 , H04N19/94
摘要： The present invention relates to a method and a system for efficiently compressing images by estimating contextual probability distributions based on virtually all samples processed up to a current position in the image. The method comprises encoding a distribution symbol of the property vector X from a distribution of the property vectors found in the contextual patterns that are identical or similar to the contextual pattern of the respective pixel, when the property vector X of the respective pixel occurred in any of the contextual patterns that are identical or similar to the contextual pattern of the respective pixel; encoding a first stage exception handling symbol and a palette symbol of the respective property vector X of a dynamically generated palette of property vectors, when the respective property vector X of the respective pixel has not occurred in the contextual patterns that are identical or similar to the contextual pattern of the respective pixel; and encoding a first stage exception handling symbol, a second stage exception handling symbol, and a representation of all components of the property vector X, when the property vector X has not occurred in the contextual patterns that are identical or similar to the contextual pattern of the respective pixel and the property vector X is not found in the palette.
摘要翻译：本发明涉及一种用于通过基于实际上直到图像中的当前位置处理的所有样本来估计情境概率分布来有效地压缩图像的方法和系统。该方法包括：当相应像素的属性向量X出现在任何相邻像素的上下文模式中时，根据在上下文模式中找到的与相应像素的上下文模式相同或相似的属性向量的分布来编码属性向量X的分布符号与相应像素的上下文模式相同或相似的上下文模式; 当相应像素的相应属性矢量X未在与所述相似或相似的情境模式中发生时，编码动态生成的属性矢量调色板的相应属性矢量X的第一阶段异常处理符号和调色板符号相应像素的上下文模式; 并且当属性矢量X未出现在与上下文模式相同或相似的上下文模式中时编码第一阶段异常处理符号，第二阶段异常处理符号以及属性矢量X的所有组件的表示在调色板中找不到相应的像素和属性矢量X.

90. 发明申请

WO2016115343A2 PALETTE CODING FOR NON-4:4:4 SCREEN CONTENT VIDEO 审中-公开
标题翻译：非4：4：4屏幕内容视频的PALETTE编码
公开(公告)号：WO2016115343A2
公开(公告)日：2016-07-21
申请号：PCT/US2016/013406
申请日：2016-01-14
申请人： VID SCALE, INC.
发明人： XIU, Xiaoyu , YE, Yan , HE, Yuwen
IPC分类号： H04N19/176 , H04N19/593 , H04N19/186 , H04N19/182 , H04N19/90
CPC分类号： H04N19/593 , H04N19/176 , H04N19/182 , H04N19/186 , H04N19/90 , H04N19/94
摘要： A video coding device may receive a video bit-stream that carries a video captured in a non-4: 4:4 chroma format. A palette mode may be used to decode the video bit-stream. The video bit-stream may include data defining a palette table and a palette index map in a 4:4:4 chroma format for the current block. A luma sample value for a luma sample position in the non-4:4:4 chroma format may be determined based on the luma sample position, the palette index map and the palette table. A chroma sample position associated with the 4:4:4 chroma format on the palette index map may be derived based on the luma component to chroma component resolution ratio in the non-4 :4:4 chroma format. A chroma sample value for a chroma sample position in non-444 chroma format may be determined based on the derived chroma sample position, the palette index map and the palette table.
摘要翻译：视频编码设备可以接收携带以非4：4：4色度格式捕获的视频的视频比特流。调色板模式可用于解码视频比特流。视频比特流可以包括为当前块以4：4：4色度格式定义调色板表和调色板索引图的数据。可以基于亮度样本位置，调色板索引图和调色板表来确定非4：4：4色度格式中的亮度样本位置的亮度样本值。与调色板索引图上的4：4：4色度格式相关联的色度样本位置可基于非4：4：4色度格式中的亮度分量与色度分量分辨率比率来导出。可以基于导出的色度样本位置，调色板索引图和调色板表来确定非444色度格式的色度样本位置的色度样本值。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式