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公开(公告)号：EP2777279A2
公开(公告)日：2014-09-17
申请号：EP12791630.2
申请日：2012-11-08
发明人： LOU, Jian , WANG, Limin
CPC分类号： H04N19/00393 , H04N19/21 , H04N19/60 , H04N19/70 , H04N19/91
摘要： A system is provided for determining a binary codeword for a symbol representing a transform coefficient within transform units (TUs) that divide up coding units (CUs) in a High Efficiency Video Coding (HEVC) system. The system determines a truncated rice prefix and, when a parameter variable is greater than zero, determines a truncated rice suffix for the symbol. The system determines a main prefix either from the truncated rice prefix alone, or from a combination of the truncated rice prefix and the truncated rice suffix. When the main prefix is the same as a comparison string, the system also determines a main suffix. The system determines the final binary codeword for the symbol either from the main prefix alone, or from a combination of the main prefix and the main suffix.
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2.发明公开Method and apparatus for encoding a video stream 审中-公开Verfahren und Vorrichtung zur Codierung eines Video-Streams
公开(公告)号：EP2670140A1
公开(公告)日：2013-12-04
申请号：EP12305619.4
申请日：2012-06-01
申请人： Alcatel Lucent
IPC分类号： H04N7/26
CPC分类号： H04L65/607 , G06T9/20 , H04N19/109 , H04N19/11 , H04N19/117 , H04N19/124 , H04N19/14 , H04N19/176 , H04N19/197 , H04N19/20 , H04N19/21
摘要： A method for encoding a video stream divided in macroblocks using an encoding scheme, the video stream comprising a transparency level channel, said method comprising:
- classifying said macroblocks into inner macroblocks, for which a transparency value provided by said transparency information channel is substantially uniform, and transition macroblocks, for which a transparency value provided by said transparency level channel is not substantially uniform;
- determining a statistic of said transparency value for each one of said inner macroblocks; and
- configuring a respective parameter of said encoding scheme for each one of said inner macroblocks in function of its respective statistic.摘要翻译： 一种用于使用编码方案对以宏块分割的视频流进行编码的方法，所述视频流包括透明度级信道，所述方法包括： - 将所述宏块分类为内部宏块，由所述透明度信息信道提供的透明度值基本上是均匀的 ，并且由所述透明度级信道提供的透明度值基本上不均匀的过渡宏块; - 确定所述内部宏块中的每一个的所述透明度值的统计量; 以及 - 根据其各自的统计量，为每个所述内部宏块配置所述编码方案的相应参数。
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公开(公告)号：EP2499811A1
公开(公告)日：2012-09-19
申请号：EP10785529.8
申请日：2010-11-08
发明人： BRULS, Wilhelmus, Hendrikus, Alfonsus , VAREKAMP, Christiaan , KLEIN GUNNEWIEK, Reinier, Bernardus, Maria
IPC分类号： H04M13/00
CPC分类号： H04N19/21 , H04N13/161 , H04N19/46 , H04N19/597 , H04N2213/003
摘要： A method of encoding a video data signal (15) is provided, together with a method for decoding. The encoding comprises providing color information (51) for pixels in an image, providing a depth map with depth information (52) for the pixels, providing transition information (56, 57, 60, 70, 71) being representative of a width (63, 73) of a transition region (61, 72) in the image, the transition region (61, 72) comprising a depth transition (62) and blended pixels in which colors of a foreground object and a background object are blended, and generating (24) the video data signal (15) comprising encoded data representing the color information (51), the depth map (52) and the transition information (56, 57, 60, 70, 71). The decoding comprises using the transition information (56, 57, 60, 70, 71) for determining the width (63, 73) of the transition regions (61, 72) and for determining alpha values (53) for pixels inside the transition regions (61, 72). The determined alpha values (53) are used for determining the color of a blended pixel at the transition of a foreground object and a background object.
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公开(公告)号：EP2200314B1
公开(公告)日：2012-05-09
申请号：EP10000893.7
申请日：1998-10-23
发明人： Hasegawa, Yuri , Sekiguchi, Shunichi , Kuroda, Shinichi , Asai, Kohtaro , Nishikawa, Hirofumi , Isu, Yoshimi
CPC分类号： G06F9/45525 , H04N19/00 , H04N19/107 , H04N19/132 , H04N19/172 , H04N19/176 , H04N19/20 , H04N19/21 , H04N19/29 , H04N19/31 , H04N19/39 , H04N19/46 , H04N19/50 , H04N19/587 , H04N19/61 , H04N19/70 , H04N21/234318 , H04N21/23614 , H04N21/4307 , H04N21/4348 , H04N21/440281 , H04N21/6332 , H04N21/654 , H04N21/6547
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公开(公告)号：EP1697898B1
公开(公告)日：2012-04-04
申请号：EP04809093.0
申请日：2004-12-17
发明人： STRÖM, Jacob
IPC分类号： G06T9/00
CPC分类号： G06T9/008 , G06T9/00 , H04N19/103 , H04N19/136 , H04N19/154 , H04N19/176 , H04N19/21 , H04N19/94
摘要： An alpha image encoding and decoding scheme is disclosed. In the encoding an alpha image, is decomposed into image blocks (600) comprising multiple image element (610). The blocks (600) are compressed into block representations (700). A block representation (700) comprises at least a color codeword (710), an alpha codeword (720), an alpha modifying codeword (730) and a sequence (740) of alpha modifier indices. The color (710) and alpha (720) codeword (710) are representations of the colors and alpha value of the image elements (610) of the block (600), respectively. The alpha modifying codeword (730) is a representation of a set of multiple alpha modifiers for modifying an alpha value represented by the alpha codeword (720). The index sequence (740) includes an alpha index for each image element (610) in the block (600), where an alpha index identifies one of alpha modifiers in the alpha modifier set.
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6.发明公开VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, VIDEO ENCODING METHOD, VIDEO DECODING METHOD, AND VIDEO ENCODING OR DECODING PROGRAM 审中-公开设备进行视频编码，设备技术视频解码方法，视频编码，用于解码视频方法和程序视频编码或 解码
公开(公告)号：EP2197215A4
公开(公告)日：2011-03-23
申请号：EP08829169
申请日：2008-09-05
申请人： NEC CORP
发明人： CHONO KEIICHI , MIYAMOTO YOSHIHIRO
CPC分类号： H04N19/93 , H04N19/136 , H04N19/196 , H04N19/21 , H04N19/91
摘要： Intended is to obtain a video encoding device, a video encoding method, and a video encoding program which enable to prevent reduction in compression efficiency caused by drastic changes in symbol occurrence probabilities in context adaptive coding, and a video decoding device, a video decoding method and a decoding program corresponding thereto. The video data 101 is input into video encoding device on a macroblock basis, and after quantization, the PCM determination unit 139 determines whether the coded data 123 is PCM mode or not. Even when the coded data 123 is PCM mode, the context updating unit 301 executes context updating processing so as to improve efficiency of binary arithmetic coding. According to the determination of PCM mode or non PCM mode, the third switch 148 supplies either binary arithmetic coding output or PCM coding output as its output data.
摘要翻译： 意图是获得一种视频编码装置，视频编码方法和视频编码程序其能够防止压缩效率的降低由在符号出现概率的上下文自适应编码急剧变化引起的，以及视频解码装置，视频解码方法 和解码程序与其对应。 视频数据101是基于宏块输入到视频编码装置，和量化之后，PCM判定单元139 bestimmt无论编码数据123是PCM模式或没有。 甚至当该编码数据123是PCM模式时，上下文更新单元301执行上下文更新处理，以提高二值算术编码的效率。 。根据PCM模式或非PCM模式中，第三开关的确定148家用品无论二进制算术编码输出或PCM编码输出作为其输出数据。
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7.发明公开
公开(公告)号：EP2187641A3
公开(公告)日：2010-12-15
申请号：EP10000894.5
申请日：1998-10-23
发明人： Hasegawa, Yuri , Sekiguchi, Shunichi , Kuroda, Shinichi , Asai, Kohtaro , Nishikawa, Hirofumi , Isu, Yoshimi
CPC分类号： G06F9/45525 , H04N19/00 , H04N19/107 , H04N19/132 , H04N19/172 , H04N19/176 , H04N19/20 , H04N19/21 , H04N19/29 , H04N19/31 , H04N19/39 , H04N19/46 , H04N19/50 , H04N19/587 , H04N19/61 , H04N19/70 , H04N21/234318 , H04N21/23614 , H04N21/4307 , H04N21/4348 , H04N21/440281 , H04N21/6332 , H04N21/654 , H04N21/6547
摘要： A coded bit stream 30 generated on a coding side consists of a VO header 30a, a VOL header 30b, a GOV header 30c, a VOP header 30d and VOP data 30e, and the VOL header 30b multiplexes an object intra-coded indicator signal 7' indicating whether all the VOP data 30e contained in a VOL or GOV are intra coded or not. This enables a decoding side to recognize whether all the VOP data 30e contained in the VOL or GOV in the coded bit stream 30 are infra coded or not by only analyzing the object intra-coded indicator signal 7'. This can facilitate such processings as frame skip control or random access of the VOPs.
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公开(公告)号：EP2143039A2
公开(公告)日：2010-01-13
申请号：EP08749819.2
申请日：2008-04-28
申请人： I.r.i.s. S.a.
CPC分类号： G06T9/00 , G06K9/00456 , G06K9/34 , G06K9/38 , G06K9/6203 , G06K9/6215 , G06K2209/01 , H04N1/40062 , H04N1/41 , H04N19/21 , H04N19/29 , H04N19/59 , H04N19/85
摘要： A first aspect of the invention relates to a method for creating a binary mask image from an a inputted digital image of a scanned document, comprising the steps of creating a binarized image by binarizing the inputted digital image, detecting first text regions representing light text on a dark background, and inverting the first text regions, such that the inverted first text regions are interpretable in the same way as dark text on a light background. A second aspect of the invention relates to a method for comparing in a binary image a first pixel blob with a second pixel blob to determine whether they represent matching symbols, comprising the steps of detecting a line in one blob not present in the other and/or determining if one of the blobs represents an italicized symbol where the other does not.
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公开(公告)号：EP1099351B1
公开(公告)日：2007-12-26
申请号：EP99931952.8
申请日：1999-06-25
发明人： LI, Shipeng
IPC分类号： H04N7/26
摘要： A generic spatially-scalable shape encoding apparatus and method for handling different mask decomposition methods, while maximizing coding efficiency of the encoder, is disclosed. The present generic spatially-scalable shape encoding applies three encoding steps to maximize the coding efficiency of the encoder, i.e., mask mode encoding, base mask layer coding and enhancement mask layer coding.
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10.发明公开Method and apparatus for encoding video shape and texture information 审中-公开用于编码纹理信息和Videokontur-方法和装置
公开(公告)号：EP1578136A3
公开(公告)日：2005-10-19
申请号：EP05104841.1
申请日：1999-01-26
申请人： AT&T Corp.
发明人： Ostermann, Joern
摘要： The present invention concerns an encoding apparatus comprising: an image analysis module that generates shape, texture and motion information from image data representing at least a video object; a parameter coding module that adjusts texture information generated by the image analysis module based on original shape information from the image analysis module and encodes the adjusted texture information and shape and motion information; a decoding module that decodes encoded texture, shape and motion information from the parameter coding module; and a memory that stores decoded data from the decoding module. Further, the invention relates to a method of encoding texture information for a video object, the method comprising: performing image analysis to create a bounding shape for a current video object plane S k (VOP S k ); estimating texture and shape motion parameters for the VOP S k ; predictively encoding the texture and shape motion parameters with respect to a reference VOP S' k-1 ; transmitting and decoding the encoded texture and shape motion parameters; and storing a new reference VOP in memory.
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