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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。
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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。
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