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1. 发明申请

US20090310685A1 HIGH-YIELD MULTI-THREADING METHOD AND APPARATUS FOR VIDEO ENCODERS/TRANSCODERS/DECODERS WITH DYNAMIC VIDEO REORDERING AND MULTI-LEVEL VIDEO CODING DEPENDENCY MANAGEMENT 有权
标题翻译：具有动态视频录像和多级视频编码依赖性管理的视频编码器/转码器/解码器的高效多线程方法和装置
公开(公告)号：US20090310685A1
公开(公告)日：2009-12-17
申请号：US12479336
申请日：2009-06-05
申请人： Jochen Christian SCHMIDT , Paul Seung Ho CHANG , Chris Yoochang CHUNG , Christian Luc DUVIVIER , Ionut HRISTODORESCU , Hsi-Jung WU , Dazhong ZHANG , Xiaosong ZHOU
发明人： Jochen Christian SCHMIDT , Paul Seung Ho CHANG , Chris Yoochang CHUNG , Christian Luc DUVIVIER , Ionut HRISTODORESCU , Hsi-Jung WU , Dazhong ZHANG , Xiaosong ZHOU
IPC分类号： H04N7/26
CPC分类号： H04N19/436 , H04N19/102 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/61
摘要： Disclosed is an exemplary video coder and video coding method according to an embodiment of the present invention. The exemplary video coder includes a scheduler, a plurality of processors and a multiplexer. The scheduler can examine processing units in an input buffer to determine an order for the processing unit to be coded by a processor. If the processing unit under examination depends on a processing unit not yet processed, the processing unit under examination can be merged with other processing units, if any, that share a similar dependency. If the processing unit under examination does not depend on any processing units not yet processed, it can be sent to a next available processor for coding. When a processing unit is sent to a processor, any merged processing units that depend on sent processing unit can also be sent to a next available processor.
摘要翻译：公开了根据本发明的实施例的示例性视频编码器和视频编码方法。示例性视频编码器包括调度器，多个处理器和多路复用器。调度器可以检查输入缓冲器中的处理单元以确定处理单元由处理器编码的顺序。如果正在检查的处理单元依赖于尚未处理的处理单元，则被检查的处理单元可以与具有相似依赖性的其他处理单元（如果有的话）合并。如果被检查的处理单元不依赖于尚未处理的任何处理单元，则可将其发送到下一个可用的处理器进行编码。当处理单元被发送到处理器时，依赖于发送的处理单元的任何合并的处理单元也可以被发送到下一个可用的处理器。

2. 发明申请

US20110038416A1 VIDEO CODER PROVIDING IMPROVED VISUAL QUALITY DURING USE OF HETEROGENEOUS CODING MODES 审中-公开
标题翻译：视频编码器在使用异构编码模式时提供改进的视觉质量
公开(公告)号：US20110038416A1
公开(公告)日：2011-02-17
申请号：US12541773
申请日：2009-08-14
申请人： Xiaosong ZHOU , Ionut HRISTODORESCU , Hsi-Jung WU , Xiaojin SHI
发明人： Xiaosong ZHOU , Ionut HRISTODORESCU , Hsi-Jung WU , Xiaojin SHI
IPC分类号： H04N11/04
CPC分类号： H04N19/194 , H04N19/103 , H04N19/109 , H04N19/11 , H04N19/154 , H04N19/157 , H04N19/176 , H04N19/182 , H04N19/61
摘要： A video coding system reduces perceptible artifacts introduced to coded video due to selection of disparate coding modes among adjacent partitions of video. When coding modes are assigned to partitions of video that likely would introduce visually perceptible coding artifacts during decode, the partitions may be subject to a coding process in which a selected partition is coded according to coding modes that correspond to neighboring partitions, then decoded. The decoded data of the selected partition may be recoded according to a different coding mode. Coding artifacts that otherwise might be introduced by the different coding mode may be avoided by first coding the corresponding partition in a manner that is consistent with neighboring partitions, then decoding the coded partition and re-coding the decoded data according to the different mode. In an embodiment, a quantization parameter may be reduced between a first code and the recode. The coding technique may be applied to partitions of various scales—e.g., to pixel blocks or frames.
摘要翻译：视频编码系统由于在相邻的视频分区之间选择不同的编码模式，减少了引入编码视频的可察觉的伪像。当编码模式被分配给可能在解码期间引入视觉上可感知的编码伪像的视频分区时，分区可以经受编码处理，其中根据与相邻分区对应的编码模式对所选择的分区进行编码，然后进行解码。可以根据不同的编码模式重新编码所选分区的解码数据。可以通过以与相邻分区一致的方式对相应的分区进行编码，然后根据不同的模式对编码的分区进行解码并重新编码解码的数据，可以避免不同的编码模式可能引入的编码人造物。在一个实施例中，可以在第一代码和重新编码之间减少量化参数。编码技术可以应用于各种尺度的分区，例如，应用于像素块或帧。

3. 发明申请

US20100309987A1 IMAGE ACQUISITION AND ENCODING SYSTEM 审中-公开
标题翻译：图像采集和编码系统
公开(公告)号：US20100309987A1
公开(公告)日：2010-12-09
申请号：US12533927
申请日：2009-07-31
申请人： Davide CONCION , Xiaosong ZHOU , Guy COTE , Cecile FORET , Haitao (Harry) GUO , Ionut HRISTODORESCU , James Oliver NORMILE , Xiaojin SHI , Hsi-Jung WU
发明人： Davide CONCION , Xiaosong ZHOU , Guy COTE , Cecile FORET , Haitao (Harry) GUO , Ionut HRISTODORESCU , James Oliver NORMILE , Xiaojin SHI , Hsi-Jung WU
IPC分类号： H04N7/26 , H04N7/24
CPC分类号： H04N5/772 , H04N5/765 , H04N5/781 , H04N5/85 , H04N9/7921 , H04N9/8042 , H04N9/8205 , H04N19/107 , H04N19/124 , H04N19/139 , H04N19/14 , H04N19/40 , H04N19/46 , H04N19/85
摘要： A method and system are provided to encode a video sequence into a compressed bitstream. An encoder receives a video sequence from an image-capture device, together with metadata associated with the video sequence, and codes the video sequence into a first compressed bitstream using the metadata to select or revise a coding parameter associated with a coding operation. Optionally, the video sequence may be conditioned for coding by a preprocessor, which also may use the metadata to select or revise a preprocessing parameter associated with a preprocessing operation. The encoder may itself generate metadata associated with the first compressed bitstream, which may be used together with any metadata received by the encoder, to transcode the first compressed bitstream into a second compressed bitstream. The compressed bitstreams may be decoded by a decoder to generate recovered video data, and the recovered video data may be conditioned for viewing by a postprocessor, which may use the metadata to select or revise a postprocessing parameter associated with a postprocessing operation.
摘要翻译：提供了将视频序列编码为压缩比特流的方法和系统。编码器从图像捕获装置接收视频序列以及与视频序列相关联的元数据，并且使用元数据将视频序列编码为第一压缩比特流，以选择或修改与编码操作相关联的编码参数。可选地，视频序列可以由预处理器进行调节，预处理器也可以使用元数据来选择或修改与预处理操作相关联的预处理参数。编码器本身可以产生与可与编码器接收的任何元数据一起使用的第一压缩比特流相关联的元数据，以将第一压缩比特流转码为第二压缩比特流。压缩比特流可以由解码器解码以产生恢复的视频数据，并且恢复的视频数据可以被调整为由后处理器进行查看，后处理器可以使用元数据来选择或修改与后处理操作相关联的后处理参数。

4. 发明申请

US20100246691A1 RESTORE FILTER FOR RESTORING PREPROCESSED VIDEO IMAGE 有权
标题翻译：用于恢复预处理视频图像的恢复过滤器
公开(公告)号：US20100246691A1
公开(公告)日：2010-09-30
申请号：US12463913
申请日：2009-05-11
申请人： Gianluca FILIPPINI , Xiaosong ZHOU , Hsi-Jung WU , James Oliver NORMILE , Xiaojin SHI , Ionut HRISTODORESCU
发明人： Gianluca FILIPPINI , Xiaosong ZHOU , Hsi-Jung WU , James Oliver NORMILE , Xiaojin SHI , Ionut HRISTODORESCU
IPC分类号： H04N7/12
CPC分类号： H04N19/00084 , H04N19/103 , H04N19/122 , H04N19/124 , H04N19/154 , H04N19/176 , H04N19/61 , H04N19/91
摘要： Embodiments of the present invention provides a method and device for processing a source video. The method and device may provide computing an artifact estimation from differences among pixels selected from spatially-distributed sampling patterns in the source video; filtering the source video to produce a filtered version of the source video, computing a blending factor based on the artifact estimation in the source video, and computing an output video by blending the source video and the filtered version of the source video based on the blending factor.
摘要翻译：本发明的实施例提供了一种用于处理源视频的方法和设备。该方法和装置可以提供从源视频中从空间分布的采样模式中选择的像素之间的差异来计算伪像估计; 过滤源视频以产生源视频的过滤版本，基于源视频中的伪像估计来计算混合因子，以及基于混合来混合源视频和源视频的过滤版本来计算输出视频因子。

5. 发明申请

US20100246689A1 DYNAMIC DITHERING FOR VIDEO COMPRESSION 有权
标题翻译：动态压缩视频压缩
公开(公告)号：US20100246689A1
公开(公告)日：2010-09-30
申请号：US12463859
申请日：2009-05-11
申请人： Gianluca FILIPPINI , Hsi-Jung WU , James Oliver NORMILE , Xiaojin SHI , Xiaosong ZHOU , Ionut HRISTODORESCU
发明人： Gianluca FILIPPINI , Hsi-Jung WU , James Oliver NORMILE , Xiaojin SHI , Xiaosong ZHOU , Ionut HRISTODORESCU
IPC分类号： H04N7/26
CPC分类号： H04N19/90 , H04N19/124 , H04N19/136 , H04N19/154 , H04N19/86
摘要： A method and device for dithering video from a decoder. The method and device provide: selecting a segment of video frames from the video; computing a noise map for the segment of the video, the noise map computed from differences among pixels selected from spatially-distributed sampling patterns in the segment; determining contours of quantization artifacts within the video frame based on the noise map and a histogram of pixel values in the video frame; computing a gradient measurement of pixel values along the contours; identifying regions along the contours of quantization artifacts to apply dithering based on the noise map and the gradient measurement; determining a dithering strength based on the noise map and the gradient measurement; and applying dithering noise to the identified regions at the determined dithering strength.
摘要翻译：一种从解码器抖动视频的方法和装置。该方法和设备提供：从视频中选择一段视频帧; 计算视频段的噪声映射，根据从片段中的空间分布采样模式中选择的像素之间的差异计算的噪声图; 基于噪声图和视频帧中的像素值的直方图确定视频帧内的量化伪像的轮廓; 计算沿着轮廓的像素值的梯度测量; 识别沿着量化伪影轮廓的区域，以基于噪声图和梯度测量应用抖动; 基于噪声图和梯度测量确定抖动强度; 并以确定的抖动强度对所识别的区域施加抖动噪声。

6. 发明申请

US20100309975A1 IMAGE ACQUISITION AND TRANSCODING SYSTEM 审中-公开
标题翻译：图像采集和扫描系统
公开(公告)号：US20100309975A1
公开(公告)日：2010-12-09
申请号：US12533985
申请日：2009-07-31
申请人： Xiaosong ZHOU , Davide CONCION , Guy COTE , Cecile FORET , Haitao (Harry) GUO , Ionut HRISTODORESCU , James Oliver NORMILE , Xiaojin SHI , Hsi-Jung WU
发明人： Xiaosong ZHOU , Davide CONCION , Guy COTE , Cecile FORET , Haitao (Harry) GUO , Ionut HRISTODORESCU , James Oliver NORMILE , Xiaojin SHI , Hsi-Jung WU
IPC分类号： H04N7/26
CPC分类号： H04N5/772 , H04N5/765 , H04N5/781 , H04N5/85 , H04N9/7921 , H04N9/8042 , H04N9/8205 , H04N19/107 , H04N19/124 , H04N19/139 , H04N19/14 , H04N19/40 , H04N19/46 , H04N19/85
摘要： A method and system are provided to encode a video sequence into a compressed bitstream. An encoder receives a video sequence from an image-capture device, together with metadata associated with the video sequence, and codes the video sequence into a first compressed bitstream using the metadata to select or revise a coding parameter associated with a coding operation. Optionally, the video sequence may be conditioned for coding by a preprocessor, which also may use the metadata to select or revise a preprocessing parameter associated with a preprocessing operation. The encoder may itself generate metadata associated with the first compressed bitstream, which may be used together with any metadata received by the encoder, to transcode the first compressed bitstream into a second compressed bitstream. The compressed bitstreams may be decoded by a decoder to generate recovered video data, and the recovered video data may be conditioned for viewing by a postprocessor, which may use the metadata to select or revise a postprocessing parameter associated with a postprocessing operation.
摘要翻译：提供了将视频序列编码为压缩比特流的方法和系统。编码器从图像捕获装置接收视频序列以及与视频序列相关联的元数据，并且使用元数据将视频序列编码为第一压缩比特流，以选择或修改与编码操作相关联的编码参数。可选地，视频序列可以由预处理器进行调节，预处理器也可以使用元数据来选择或修改与预处理操作相关联的预处理参数。编码器本身可以产生与可与编码器接收的任何元数据一起使用的第一压缩比特流相关联的元数据，以将第一压缩比特流转码为第二压缩比特流。压缩比特流可以由解码器解码以产生恢复的视频数据，并且恢复的视频数据可以被调整为由后处理器进行查看，后处理器可以使用元数据来选择或修改与后处理操作相关联的后处理参数。

7. 发明申请

US20100246688A1 BLIND NOISE ANALYSIS FOR VIDEO COMPRESSION 审中-公开
标题翻译：用于视频压缩的盲点噪声分析
公开(公告)号：US20100246688A1
公开(公告)日：2010-09-30
申请号：US12463871
申请日：2009-05-11
申请人： Gianluca FILIPPINI , Xiaosong ZHOU , Hsi-Jung WU , James Oliver NORMILE , Xiaojin SHI , Ionut HRISTODORESCU
发明人： Gianluca FILIPPINI , Xiaosong ZHOU , Hsi-Jung WU , James Oliver NORMILE , Xiaojin SHI , Ionut HRISTODORESCU
IPC分类号： H04N7/12
CPC分类号： H04N19/176 , H04N19/103 , H04N19/122 , H04N19/124 , H04N19/154 , H04N19/61 , H04N19/91
摘要： Example embodiments of the present invention provide a method or device for coding source video. The method or device may provide for a segment of video frames from the source video, computing a noise map for the segment of the source video where the noise map is computed from differences among pixels selected from spatially-distributed sampling patterns in the segment, computing control parameter adjustments based on the noise map, and coding the selected segment of source video according to control parameters generated from a default coding policy and the control parameter adjustments, where the default coding policy includes default control parameters of the encoder.
摘要翻译：本发明的示例实施例提供了一种用于对源视频进行编码的方法或装置。该方法或装置可以提供来自源视频的一段视频帧，计算源视频段的噪声图，其中根据片段中空间分布的采样模式中选择的像素之间的差异来计算噪声图，计算根据噪声图控制参数调整，以及根据从默认编码策略生成的控制参数和控制参数调整对所选择的源视频段进行编码，其中默认编码策略包括编码器的默认控制参数。

8. 发明申请

US20100008419A1 Hierarchical Bi-Directional P Frames 审中-公开
标题翻译：分层双向P帧
公开(公告)号：US20100008419A1
公开(公告)日：2010-01-14
申请号：US12339735
申请日：2008-12-19
申请人： Hsi-Jung WU , James Oliver NORMILE , Xiaojin SHI , Xiaosong ZHOU , Gianluca FILIPPINI , Ionut HRISTODORESCU
发明人： Hsi-Jung WU , James Oliver NORMILE , Xiaojin SHI , Xiaosong ZHOU , Gianluca FILIPPINI , Ionut HRISTODORESCU
IPC分类号： H04N7/32
CPC分类号： H04N19/105 , H04N19/31 , H04N19/577
摘要： Embodiments of the present invention provide systems, methods and apparatuses for generating forward, backward or bi-directional P frames. Prior to encoding a sequence of video frames, P frames within the video sequence can be reordered to include causal and/or non-causal references to one or more reference frames. This allows any block partition of a bi-directional P frame to include a single reference to a reference frame that is temporally displayed either before or after the bi-directional P frame. Compression and visual quality can therefore be improved. Hierarchical frame structures can be constructed using bi-directional P frames to better accommodate low complexity decoding profiles. Multilayered encoded video bitstreams can be generated based on the hierarchical frame structures and can include a first layer of anchor frames and one or more second layers that include bi-directional P frames that reference the anchor frames and/or any frame in any lower level layer.
摘要翻译：本发明的实施例提供用于产生前向，后向或双向P帧的系统，方法和装置。在对一系列视频帧进行编码之前，视频序列内的P帧可以被重新排序，以包括对一个或多个参考帧的因果和/或非因果引用。这允许双向P帧的任何块分区包括在双向P帧之前或之后临时显示的参考帧的单个引用。因此可以提高压缩和视觉质量。可以使用双向P帧来构建分层帧结构，以更好地适应低复杂度的解码简档。可以基于分级帧结构来生成多层编码视频比特流，并且可以包括第一层锚帧和一个或多个第二层，其包括引用锚帧和/或任何较低级别层中的任何帧的双向P帧。

9. 发明申请

US20110235709A1 FRAME DROPPING ALGORITHM FOR FAST ADAPTATION OF BUFFERED COMPRESSED VIDEO TO NETWORK CONDITION CHANGES 审中-公开
标题翻译：用于快速适应缓存压缩视频到网络条件变化的帧丢弃算法
公开(公告)号：US20110235709A1
公开(公告)日：2011-09-29
申请号：US12756100
申请日：2010-04-07
申请人： Xiaojin SHI , Xiaosong ZHOU , Joe ABUAN , Hyeonkuk JEONG , Jochen Christian SCHMIDT , Yan YANG , James Oliver NORMILE , Hsi-Jung WU
发明人： Xiaojin SHI , Xiaosong ZHOU , Joe ABUAN , Hyeonkuk JEONG , Jochen Christian SCHMIDT , Yan YANG , James Oliver NORMILE , Hsi-Jung WU
IPC分类号： H04N7/26 , H04N7/32
CPC分类号： H04N21/64723 , H04N19/105 , H04N19/12 , H04N19/132 , H04N19/152 , H04N19/159 , H04N19/164 , H04N19/174 , H04N19/187 , H04N19/30 , H04N19/37 , H04N19/577 , H04N19/59 , H04N21/64761
摘要： A video coding and transmission system may employ techniques for adapting buffered video to network condition changes. Video data may be coded as reference data and non-reference data. According to the embodiments, non-reference frame may be detected in buffered video while awaiting transmission to a network. When network degradation is detected, one or more of the buffered non-reference frames may be dropped when network degradation is detected. Information about the dropped frames may be passed to an encoder for updating buffer parameters for future encoding. In this manner, a video coding system may provide faster responses to changing network conditions than systems without such buffer management techniques.
摘要翻译：视频编码和传输系统可以采用用于将缓冲的视频适配到网络状况变化的技术。视频数据可以被编码为参考数据和非参考数据。根据实施例，在等待传输到网络的同时，可以在缓冲视频中检测非参考帧。当检测到网络劣化时，当检测到网络劣化时，可能会丢弃一个或多个缓冲的非参考帧。关于丢弃的帧的信息可以被传递到编码器以更新用于将来编码的缓冲器参数。以这种方式，与没有这种缓冲器管理技术的系统相比，视频编码系统可以对改变的网络条件提供更快的响应。

10. 发明申请

US20110249729A1 ERROR RESILIENT HIERARCHICAL LONG TERM REFERENCE FRAMES 审中-公开
标题翻译：错误的分层分析长期参考框架
公开(公告)号：US20110249729A1
公开(公告)日：2011-10-13
申请号：US12794580
申请日：2010-06-04
申请人： Xiaosong ZHOU , Dazhong Zhang , Davide Concion , Hsi-Jung Wu , Douglas Scott Price
发明人： Xiaosong ZHOU , Dazhong Zhang , Davide Concion , Hsi-Jung Wu , Douglas Scott Price
IPC分类号： H04N7/26
CPC分类号： H04N19/105 , H04N19/114 , H04N19/166 , H04N19/58 , H04N19/89
摘要： Embodiments of the present invention provide a video encoding system that codes video sequence into a multi-level hierarchy based on levels of long term reference (LTR) frames. According to the present invention, an encoder designates a reference frame as a long term reference (LTR) frame and transmits the LTR frame to a receiver. Upon receiving feedback from the receiver acknowledging receipt of the LTR frame, the encoder periodically codes subsequent frames as reference frames using the acknowledged LTR frame as a reference and designates subsequent reference frames as secondary LTR frames. A determined number of frames after each secondary LTR frame may be coded using a preceding secondary LTR frame as a reference.
摘要翻译：本发明的实施例提供了一种视频编码系统，其基于长期参考（LTR）帧的级别将视频序列编码为多级层级。根据本发明，编码器将参考帧指定为长期参考（LTR）帧，并将LTR帧发送到接收机。在接收到来自确认接收到LTR帧的接收机的反馈时，编码器使用确认的LTR帧作为参考，将后续帧定时作为参考帧，并将后续参考帧指定为辅助LTR帧。每个辅助LTR帧之后的确定数量的帧可以使用先前的次级LTR帧作为参考进行编码。

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