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2. 发明申请

US20070247549A1 Method for Encoding/Decoding a Video Sequence Based on Hierarchical B-Picture Using Adaptively-Adjusted Gop Stucture 有权
标题翻译：基于使用自适应调整Gop结构的分层B图像对视频序列进行编码/解码的方法
公开(公告)号：US20070247549A1
公开(公告)日：2007-10-25
申请号：US11577329
申请日：2005-10-31
申请人： Se Jeong , Kyu Kim , Jin Hong , Gwang Park , Min Park
发明人： Se Jeong , Kyu Kim , Jin Hong , Gwang Park , Min Park
IPC分类号： H04N7/24
CPC分类号： H04N19/59 , H04N19/103 , H04N19/114 , H04N19/147 , H04N19/177 , H04N19/19 , H04N19/192 , H04N19/46 , H04N19/61 , H04N19/70
摘要： Provided is a method for performing hierarchical B picture-based coding on a video sequence using the structure of adaptively divided group of pictures (GOP). The method includes the steps of, for each predefined 2N frame-sized group of pictures (GOP) of the video sequence, (a) encoding the 2N frame-sized GOP of the video sequence based on each of the different GOP sizes from the maximum size, 2N, to the minimum size, 2M (M is an integer between 1 and N) and obtaining different values between frames reconstructed after the encoding is performed and frames after the hierarchical B-picture prediction is performed, based on each of the different GOP sizes; (b) selecting at least one sub-GOP based on the difference values obtained by encoding the 2N frame-sized GOP of the video sequence based on each of the different GOP sizes; and (c) generating a bitstream by encoding the 2N-frame-sized GOP based on the at least one selected sub-GOP. Thereby, the hierarchical B picture-based video coding is performed by adaptively dividing the GOP size based on performance and thereby obtains high coding efficiency.
摘要翻译：提供了一种使用自适应分割的图像组（GOP）的结构对视频序列执行分层B图像编码的方法。该方法包括以下步骤：针对视频序列的每个预定义的2帧大小的图像组（GOP），（a）编码帧大小的2帧基于从最大大小2 N SUP到最小大小的不同GOP尺寸的每个不同GOP大小的视频序列的GOP（M是1和1之间的整数） N），并且基于每个不同的GOP大小，在执行编码之后重构的帧和执行分层B图像预测之后的帧之间获得不同的值; （b）基于通过基于每个不同GOP大小来编码视频序列的2＆lt; N＆gt;帧大小的GOP而获得的差值来选择至少一个子GOP; 以及（c）基于所述至少一个选择的子GOP来编码所述两帧大小的GOP来生成比特流。因此，通过基于性能自适应地划分GOP大小来执行分层B图像视频编码，从而获得高的编码效率。

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