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1. 发明申请

WO2013006455A1 ADAPTIVE CONFIGURATION OF REFERENCE FRAME BUFFER BASED ON CAMERA AND BACKGROUND MOTION 审中-公开
标题翻译：基于相机和背景运动的参考框架缓冲器的自适应配置
公开(公告)号：WO2013006455A1
公开(公告)日：2013-01-10
申请号：PCT/US2012/044994
申请日：2012-06-29
申请人： APPLE INC. , ZHOU, Xiaosong , WU, Hsi-jung , LIN, Yao-chung
发明人： ZHOU, Xiaosong , WU, Hsi-jung , LIN, Yao-chung
IPC分类号： H04N7/26 , H04N7/36 , H04N7/50
CPC分类号： H04N19/58 , H04N19/105 , H04N19/109 , H04N19/139 , H04N19/172 , H04N19/197 , H04N19/46 , H04N19/61
摘要： In a video coding/decoding system, reference picture caches in a video coder and decoder may be partitioned dynamically based on camera and background motion can lead to improved coding efficiency and coding quality. When a camera is fixed and therefore exhibits low motion, a system may allocate larger portions of the reference picture cache to storage of long term reference frames. In this case, foreground elements of an image (for example, a person) may move in front of a relatively fixed background. Increasing the number of long term reference frames can increase the chances that, no matter where the foreground elements are within a frame currently being coded, the reference picture cache will contain at least one frame that provides an adequate prediction match to background elements within the new frame. Thus the background elements uncovered in the current frame can be coded at high quality with a low number of bits. When a camera exhibits high motion, the system may allocate larger portions of the reference picture cache to storage of short term reference frames.
摘要翻译：在视频编码/解码系统中，视频编码器和解码器中的参考图像高速缓存可以基于相机进行动态分割，并且背景运动可以提高编码效率和编码质量。当照相机固定并因此表现出低运动时，系统可以将较大部分的参考图像高速缓存分配给长期参考帧的存储。在这种情况下，图像的前景元素（例如，人）可以在相对固定的背景之前移动。增加长期参考帧的数量可以增加机会，无论前景元素在当前正被编码的帧内的何处，参考图像高速缓存将包含至少一个帧，其提供与新的背景元素内的足够的预测匹配帧。因此，当前帧中未覆盖的背景元素可以以低位数的高质量被编码。当相机呈现高运动时，系统可以将较大部分的参考图像高速缓存分配给短期参考帧的存储。

2. 发明公开

EP2727349A1 ADAPTIVE CONFIGURATION OF REFERENCE FRAME BUFFER BASED ON CAMERA AND BACKGROUND MOTION 审中-公开
标题翻译：自适应康涅狄格美国参考译文澳大利亚基督教爱尔兰卡梅拉日内瓦文莱多姆
公开(公告)号：EP2727349A1
公开(公告)日：2014-05-07
申请号：EP12733577.6
申请日：2012-06-29
申请人： Apple Inc.
发明人： ZHOU, Xiaosong , WU, Hsi-jung , LIN, Yao-chung
IPC分类号： H04N7/26 , H04N7/36 , H04N7/50
CPC分类号： H04N19/58 , H04N19/105 , H04N19/109 , H04N19/139 , H04N19/172 , H04N19/197 , H04N19/46 , H04N19/61
摘要： In a video coding/decoding system, reference picture caches in a video coder and decoder may be partitioned dynamically based on camera and background motion can lead to improved coding efficiency and coding quality. When a camera is fixed and therefore exhibits low motion, a system may allocate larger portions of the reference picture cache to storage of long term reference frames. In this case, foreground elements of an image (for example, a person) may move in front of a relatively fixed background. Increasing the number of long term reference frames can increase the chances that, no matter where the foreground elements are within a frame currently being coded, the reference picture cache will contain at least one frame that provides an adequate prediction match to background elements within the new frame. Thus the background elements uncovered in the current frame can be coded at high quality with a low number of bits. When a camera exhibits high motion, the system may allocate larger portions of the reference picture cache to storage of short term reference frames.
摘要翻译：在视频编码/解码系统中，视频编码器和解码器中的参考图像高速缓存可以基于相机进行动态分割，并且背景运动可以提高编码效率和编码质量。当相机固定并因此表现出低运动时，系统可以将较大部分的参考图像高速缓存分配给长期参考帧的存储。在这种情况下，图像的前景元素（例如，人）可以在相对固定的背景之前移动。增加长期参考帧的数量可以增加机会，无论前景元素在当前正被编码的帧中哪里，参考图像高速缓存将包含至少一个帧，其提供与新的背景元素内的足够的预测匹配帧。因此，当前帧中未覆盖的背景元素可以以低位数的高质量被编码。当相机呈现高运动时，系统可以将参考图像高速缓存的较大部分分配给短期参考帧的存储。

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