-
公开(公告)号：US20110188578A1
公开(公告)日：2011-08-04
申请号：US12796803
申请日：2010-06-09
CPC分类号： H04N19/86 , H04N19/117 , H04N19/159 , H04N19/176 , H04N19/82
摘要： The invention relates to a method for coding a sequence of images, comprising the following steps: determining, for the image data, the prediction image data from reference image data, calculating residual data from image data and prediction image data, quantizing the residual data with a quantization step, reconstructing the image data into reconstructed image data, filtering the reconstructed image data according to at least one filtering parameter with a view to their use as reference image data, coding the quantized residual data, selecting a function representing the variations of at least one filtering parameter according to a quantization step value of a set of at least two functions from a predetermined value representative of a filtering intensity, determining the value of at least one filtering parameter from the function selected and the quantization step.
摘要翻译： 本发明涉及一种图像序列编码方法，包括以下步骤：对于图像数据，从参考图像数据确定预测图像数据，从图像数据和预测图像数据中计算残差数据，用 量化步骤，将图像数据重建为重建图像数据，根据至少一个滤波参数对重建图像数据进行滤波，以便将其用作参考图像数据，对量化的残差数据进行编码，选择表示在 根据来自代表滤波强度的预定值的一组至少两个功能的量化步长值，根据所选择的功能和量化步骤确定至少一个滤波参数的值，至少一个滤波参数。
-
公开(公告)号：US07907666B2
公开(公告)日：2011-03-15
申请号：US10504105
申请日：2003-02-10
CPC分类号： H04N19/40 , H04N19/105 , H04N19/126 , H04N19/14 , H04N19/149 , H04N19/152 , H04N19/159 , H04N19/172 , H04N19/177 , H04N19/61
摘要： Image sequences are advantageously recoded based on an evaluation of complexities before and after trans-coding of the images. Initially, information is extracted representing at least the complexity of recoding each image. A complexity ratio is calculated in accordance with the complexities of images recoded previously using the aforementioned mode to the complexities of the initial coding of said images. After smoothing the complexity ratio undergoes updating. Each image is recoded according to the mode by estimating the complexity of each image to be recoded as the product of the complexity of the initial coding of the image by the smoothed complexity ratio for the mode.
摘要翻译： 基于对图像的转码之前和之后的复杂度的评估，有利地重新编码图像序列。 首先，提取代表每个图像重新编码的复杂度的信息。 根据先前使用上述模式重新编码的图像的复杂度与所述图像的初始编码的复杂度来计算复杂度比。 平滑后，复杂性比例会更新。 根据该模式，通过估计要被重新编码的每个图像的复杂度作为图像的初始编码的复杂度乘以该模式的平滑复杂度比的乘积，根据该模式重新编码。
-
3.发明申请公开(公告)号：US20060176956A1
公开(公告)日：2006-08-10
申请号：US11345108
申请日：2006-01-31
申请人： Xavier Ducloux , Yannick Olivier , Anne Lorette
发明人： Xavier Ducloux , Yannick Olivier , Anne Lorette
IPC分类号： H04N11/04
CPC分类号： H04N19/107 , H04N19/15 , H04N19/176 , H04N19/593 , H04N19/61
摘要： The method is characterized in that the step for selecting a coding mode from the inter modes and from the intra modes is broken down into two sequential steps, a step for preselecting the intra coding mode for preselecting an intra mode for the current macroblock from the intra coding modes, and a coding decision step, part of the effective coding of the current macroblock for selecting the mode of coding the current macroblock from the inter modes and the preselected intra mode and in that the preselection step for the current macroblock is carried out during the coding decision step for a preceding macroblock.
摘要翻译： 该方法的特征在于，从帧间模式和帧内模式中选择编码模式的步骤分为两个顺序步骤：用于从帧内预选当前宏块的帧内编码模式的步骤 编码模式和编码决定步骤，用于从帧间模式和预选帧内模式中选择当前宏块的编码模式的当前宏块的有效编码的一部分，以及当前宏块的预选步骤在 用于前一个宏块的编码决定步骤。
-
公开(公告)号：US6148107A
公开(公告)日：2000-11-14
申请号：US912656
申请日：1997-08-18
CPC分类号： H04N19/198 , H04N19/107 , H04N19/126 , H04N19/139 , H04N19/14 , H04N19/142 , H04N19/149 , H04N19/159 , H04N19/176 , H04N19/177 , H04N19/196 , H04N19/61 , H04N19/124 , H04N19/146
摘要： A block based signal compression system, as for example for coding video signal, and employing quantization of codewords or transform coefficients includes circuitry for adaptively controlling the quantization. Adaptivity of quantization is made a function of several parameters. One parameter is coding cost or bandwidth, wherein coding cost is generated on a macroblock basis but averaged over a window of macroblocks centered on a macroblock currently to be quantized. Another parameter is block or macroblock motion attributes, wherein block motion attribut values are used to modify the quantizing function.
摘要翻译： 基于块的信号压缩系统，例如用于编码视频信号，以及采用码字或变换系数的量化，包括用于自适应地控制量化的电路。 量化的适应性是几个参数的函数。 一个参数是编码成本或带宽，其中编码成本是以宏块为基础产生的，但是以当前要量化的宏块为中心的宏块窗口进行平均。 另一个参数是块或宏块运动属性，其中块运动属性值用于修改量化功能。
-
公开(公告)号：US08369423B2
公开(公告)日：2013-02-05
申请号：US12796803
申请日：2010-06-09
IPC分类号： H04N7/50
CPC分类号： H04N19/86 , H04N19/117 , H04N19/159 , H04N19/176 , H04N19/82
摘要： The invention relates to a method for coding a sequence of images, comprising the following steps: determining, for the image data, the prediction image data from reference image data, calculating residual data from image data and prediction image data, quantizing the residual data with a quantization step, reconstructing the image data into reconstructed image data, filtering the reconstructed image data according to at least one filtering parameter with a view to their use as reference image data, coding the quantized residual data, selecting a function representing the variations of at least one filtering parameter according to a quantization step value of a set of at least two functions from a predetermined value representative of a filtering intensity, determining the value of at least one filtering parameter from the function selected and the quantization step.
摘要翻译： 本发明涉及一种图像序列编码方法，包括以下步骤：对于图像数据，从参考图像数据确定预测图像数据，从图像数据和预测图像数据中计算残差数据，用 量化步骤，将图像数据重建为重建图像数据，根据至少一个滤波参数对重建图像数据进行滤波，以便将其用作参考图像数据，对量化的残差数据进行编码，选择表示在 根据来自代表滤波强度的预定值的一组至少两个功能的量化步长值，根据所选择的功能和量化步骤确定至少一个滤波参数的值，至少一个滤波参数。
-
公开(公告)号：US20120269260A1
公开(公告)日：2012-10-25
申请号：US13392644
申请日：2010-08-17
申请人： Xavier Ducloux , Alain Sorin , Yannick Olivier , Bruno Guesdon
发明人： Xavier Ducloux , Alain Sorin , Yannick Olivier , Bruno Guesdon
IPC分类号： H04N7/30
CPC分类号： H04N19/103 , H04N19/147 , H04N19/176
摘要： The invention relates to a method for coding a sequence of images divided into blocks, comprising the following steps for a current block:—selecting, for the current block, a coding mode in a set of coding modes that comprises at least two coding modes, and a transform in a set of transforms that comprises at least a first transform and a second transform; and—coding the current block according to the coding mode and the transform selected. The coding mode and the transform, themselves, are selected according to the following steps:—selecting the coding mode in the set of coding modes while using the first transform, and—selecting the transform in the set of transforms while using the coding mode selected.
摘要翻译： 本发明涉及一种对划分成块的图像序列进行编码的方法，包括对当前块的以下步骤： - 针对当前块，选择包括至少两种编码模式的一组编码模式中的编码模式， 以及包括至少第一变换和第二变换的一组变换中的变换; 并根据编码模式和选择的变换对当前块进行编码。 根据以下步骤选择编码模式和变换本身： - 在使用第一变换时选择编码模式集合中的编码模式，并且在使用所选择的编码模式的同时选择变换集合中的变换 。
-
公开(公告)号：US20050254791A1
公开(公告)日：2005-11-17
申请号：US10504105
申请日：2003-02-10
CPC分类号： H04N19/40 , H04N19/105 , H04N19/126 , H04N19/14 , H04N19/149 , H04N19/152 , H04N19/159 , H04N19/172 , H04N19/177 , H04N19/61
摘要： The invention relates to a device for recoding images, using a given set throughout, from a video stream comprising image sequences initially coded according to at least one mode. The inventive device comprises: means of extracting information which is associated with the recoding of images, said information representing at least the complexity of recoding each image; means of extracting information, such as coding complexity information, which is associated with the initial coding of the images; means of calculating a ratio, called the complexity ratio, of the complexities of recoding images recoded previously using the aforementioned mode to the complexities of the initial coding of said images; means of updating a smoothed complexity ratio for said mode according to the complexity ratio; and means of recoding each image according to said mode by estimating the complexity of each image to be recoded as the product of the complexity of the initial coding of said image by the smoothed complexity ratio for said mode. The invention is suitable for MPEG-2 and H26L coding.
摘要翻译： 本发明涉及一种用于从包括根据至少一种模式最初编码的图像序列的视频流中整个使用给定的集合来重新编码图像的装置。 本发明的装置包括：提取与图像重新编码相关联的信息的装置，所述信息至少表示对每个图像进行编码的复杂度; 提取与图像的初始编码相关联的诸如编码复杂度信息的信息的装置; 将先前使用上述模式重新编码的图像的复原度的复合度的比率计算为所述图像的初始编码的复杂度的装置; 根据复杂度比，更新所述模式的平滑复杂度比的装置; 以及根据所述模式对每个图像进行编码的装置，通过估计要被重新编码的每个图像的复杂度，作为所述图像的初始编码的复杂度乘以所述模式的平滑复杂度比的乘积。 本发明适用于MPEG-2和H26L编码。
-
公开(公告)号：US20050117644A1
公开(公告)日：2005-06-02
申请号：US10884158
申请日：2004-07-02
CPC分类号： H04N19/177 , H04N19/107 , H04N19/112 , H04N19/114 , H04N19/124 , H04N19/137 , H04N19/14 , H04N19/147 , H04N19/149 , H04N19/172 , H04N19/61
摘要： The invention relates to a device for coding video frame sequences, comprising means (1) for measuring the spatial activity of the video frames to be coded, means (1) for measuring the temporal activity of the video frames to be coded, means (2) for coding the frames as a frame structure or as a field structure. According to the invention, the means (2) for coding the frames as a frame structure or as a field structure are able to choose the field or frame structure dynamically as a function of the measurements of spatial and temporal activity of the said frame.
摘要翻译： 本发明涉及一种用于编码视频帧序列的装置，包括用于测量要编码的视频帧的空间活动的装置（1），用于测量要编码的视频帧的时间活动的装置（1），装置 ），用于将帧编码为帧结构或作为场结构。 根据本发明，用于将帧编码为帧结构或场结构的装置（2）能够根据所述帧的空间和时间活动的测量动态地选择场或帧结构。
-
9.发明授权公开(公告)号：US08000389B2
公开(公告)日：2011-08-16
申请号：US11345108
申请日：2006-01-31
申请人： Xavier Ducloux , Yannick Olivier , Anne Lorette
发明人： Xavier Ducloux , Yannick Olivier , Anne Lorette
CPC分类号： H04N19/107 , H04N19/15 , H04N19/176 , H04N19/593 , H04N19/61
摘要： The method is characterized in that the step for selecting a coding mode from the inter modes and from the intra modes is broken down into two sequential steps, a step for preselecting the intra coding mode for preselecting an intra mode for the current macroblock from the intra coding modes, and a coding decision step, part of the effective coding of the current macroblock for selecting the mode of coding the current macroblock from the inter modes and the preselected intra mode and in that the preselection step for the current macroblock is carried out during the coding decision step for a preceding macroblock.
摘要翻译： 该方法的特征在于，从帧间模式和帧内模式中选择编码模式的步骤分为两个顺序步骤：用于从帧内预选当前宏块的帧内编码模式的步骤 编码模式和编码决定步骤，用于从帧间模式和预选帧内模式中选择当前宏块的编码模式的当前宏块的有效编码的一部分，以及当前宏块的预选步骤在 前一宏块的编码决定步骤。
-
公开(公告)号：US07991048B2
公开(公告)日：2011-08-02
申请号：US10544522
申请日：2004-02-04
申请人： Xavier Ducloux , Alain Sorin , Thierry Lorand
发明人： Xavier Ducloux , Alain Sorin , Thierry Lorand
CPC分类号： H04N19/194 , H04N19/115 , H04N19/124 , H04N19/15 , H04N19/152 , H04N19/177 , H04N19/51
摘要： The invention relates to a device for double pass encoding of a video data stream comprising: a first type encoding means performing the first encoding pass, a second type encoding means performing the second encoding pass. According to the invention, the second type encoding means are different from the first type encoding means and the second type encoding means use encoding information originating from the first encoding pass. Application to MPEG-2 and H.264 encoding.
摘要翻译： 本发明涉及一种用于视频数据流的双重编码的装置，包括：执行第一编码遍的第一类型编码装置，执行第二编码遍的第二类型编码装置。 根据本发明，第二类型编码装置与第一类型编码装置不同，第二类型编码装置使用源自第一编码段的编码信息。 适用于MPEG-2和H.264编码。
-
-
-
-
-
-
-
-
-
搜索结果
14 条记录 (耗时 0.011 秒)
