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51. 发明申请

US20050147163A1 Scalable video transcoding 有权
标题翻译：可扩展视频转码
公开(公告)号：US20050147163A1
公开(公告)日：2005-07-07
申请号：US10749975
申请日：2003-12-30
申请人： Shipeng Li , Lujun Yuan , Qi Chen , Feng Wu
发明人： Shipeng Li , Lujun Yuan , Qi Chen , Feng Wu
IPC分类号： H04N7/12 , H04N7/26 , H04N7/46 , H04N7/50
CPC分类号： H04N19/198 , H04N19/105 , H04N19/115 , H04N19/124 , H04N19/132 , H04N19/136 , H04N19/147 , H04N19/152 , H04N19/156 , H04N19/159 , H04N19/172 , H04N19/19 , H04N19/196 , H04N19/197 , H04N19/40 , H04N19/577 , H04N19/587 , H04N19/61
摘要： A scalable video transcoder with limited drifting error is disclosed. The transcoder accumulates re-quantization errors of I-frames or P-frames. The accumulated errors are only selectively introduced into the transcoding loop in every block to compensate for transcoding errors. A threshold algorithm adaptively utilizes the accumulated errors at block level to control drifting error at an acceptable limited level. Transcoder complexity is scalable because a DCT transform may be removed from the transcoder loop when the accumulated errors are not used for compensation. The re-quantization process can be simply implemented by look-up table(s), which significantly reduces the complexity of the re-quantization process.
摘要翻译：公开了一种具有有限漂移误差的可扩展视频转码器。代码转换器累积I帧或P帧的重量化误差。累积的错误仅在每个块中选择性地引入到代码转换循环中以补偿代码转换错误。门限算法自适应地利用块级别的累积误差来控制漂移误差在可接受的限制水平。代码转换器复杂度是可扩展的，因为当累积误差不用于补偿时，可以从代码转换器循环中去除DCT变换。重新量化过程可以通过查找表简单地实现，这显着地降低了重新量化过程的复杂性。

52. 发明申请

US20050089105A1 Systems and methods with error resilience in enhancement layer bitstream of scalable video coding 失效
标题翻译：在可扩展视频编码的增强层比特流中具有错误弹性的系统和方法
公开(公告)号：US20050089105A1
公开(公告)日：2005-04-28
申请号：US10978277
申请日：2004-10-29
申请人： Ya-Qin Zhang , Shipeng Li , Feng Wu , Rong Yan
发明人： Ya-Qin Zhang , Shipeng Li , Feng Wu , Rong Yan
IPC分类号： G06T9/00 , H04N19/89 , H04N7/12
CPC分类号： H04N19/29 , H04N19/34 , H04N19/68 , H04N19/89
摘要： A scalable layered video coding scheme that encodes video data frames into multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video, adds error resilience to the enhancement layer. Unique resynchronization marks are inserted into the enhancement layer bitstream in headers associated with each video packet, headers associated with each bit plane, and headers associated with each video-of-plane (VOP) segment. Following transmission of the enhancement layer bitstream, the decoder tries to detect errors in the packets. Upon detection, the decoder seeks forward in the bitstream for the next known resynchronization mark. Once this mark is found, the decoder is able to begin decoding the next video packet. With the addition of many resynchronization marks within each frame, the decoder can recover very quickly and with minimal data loss in the event of a packet loss or channel error in the received enhancement layer bitstream. The video coding scheme also facilitates redundant encoding of header information from the higher-level VOP header down into lower level bit plane headers and video packet headers. Header extension codes are added to the bit plane and video packet headers to identify whether the redundant data is included.
摘要翻译：将视频数据帧编码成多层的可分级的分层视频编码方案，包括具有越来越高质量视频的较低质量视频和多个增强层的基本层，向增强层增加了错误恢复能力。将独特的再同步标记插入到与每个视频分组相关联的报头中的增强层比特流中，与每个位平面相关联的报头以及与每个视频平面（VOP）段相关联的报头。在传输增强层比特流之后，解码器尝试检测分组中的错误。在检测到时，解码器在比特流中向前寻找下一个已知的再同步标记。一旦找到该标记，解码器就可以开始对下一个视频数据包进行解码。通过在每个帧内添加许多重新同步标记，解码器可以在接收到的增强层比特流中的分组丢失或信道错误的情况下非常快速地恢复并且具有最小的数据丢失。视频编码方案还有助于将标题信息从较高级别的VOP头部冗余编码到较低级位平面头部和视频分组头部。标题扩展码被添加到位平面和视频分组报头，以标识是否包括冗余数据。

53. 发明授权

US08374238B2 Spatial scalability in 3D sub-band decoding of SDMCTF-encoded video 有权
标题翻译： SDMCTF编码视频的3D子带解码空间可扩展性
公开(公告)号：US08374238B2
公开(公告)日：2013-02-12
申请号：US11127001
申请日：2005-05-10
申请人： Ruiqin Xiong , Jizheng Xu , Feng Wu , Shipeng Li
发明人： Ruiqin Xiong , Jizheng Xu , Feng Wu , Shipeng Li
IPC分类号： H04N7/12 , H04N1/66
CPC分类号： H04N19/615 , H04N19/13 , H04N19/154 , H04N19/172 , H04N19/59 , H04N19/61 , H04N19/63 , H04N19/635
摘要： Techniques and tools are described for scalable video coding and decoding. For example, a 3D sub-band decoder receives video encoded using spatial-domain motion-compensated temporal filtering at a first spatial resolution. The decoder decodes at least part of the video for output at a second spatial resolution lower than the first spatial resolution. The decoder uses any of several techniques to improve performance by devoting extra computational resources to the decoding, devoting extra buffer resources to storing reference picture information, and/or considering spatial high-pass sub-band information.
摘要翻译：描述了可扩展视频编码和解码的技术和工具。例如，3D子带解码器以第一空间分辨率接收使用空间域运动补偿时间滤波编码的视频。解码器解码至少部分视频以便以低于第一空间分辨率的第二空间分辨率输出。解码器使用几种技术中的任何一种来通过将额外的计算资源用于解码来提高性能，将额外的缓冲器资源用于存储参考图像信息和/或考虑空间高通子带信息。

54. 发明授权

US08223837B2 Learning-based image compression 有权
标题翻译：基于学习的图像压缩
公开(公告)号：US08223837B2
公开(公告)日：2012-07-17
申请号：US11851653
申请日：2007-09-07
申请人： Xiaoyan Sun , Feng Wu , Shipeng Li
发明人： Xiaoyan Sun , Feng Wu , Shipeng Li
IPC分类号： H04B1/66 , H04N7/12 , H04N11/02 , H04N11/04
CPC分类号： H04N19/59 , H04N19/132 , H04N19/14 , H04N19/587 , H04N19/85 , H04N19/90
摘要： Learning-based image compression is described. In one implementation, an encoder possessing a first set of learned visual knowledge primitives excludes visual information from an image prior to compression. A decoder possessing an independently learned set of visual knowledge primitives synthesizes the excluded visual information into the image after decompression. The encoder and decoder are decoupled with respect to the information excluded at the encoder and the information synthesized at the decoder. This results in superior data compression since the information excluded at the encoder is dropped completely and not transferred to the decoder. Primitive visual elements synthesized at the decoder may be different than primitive visual elements dropped at the encoder, but the resulting reconstituted image is perceptually equivalent to the original image.
摘要翻译：描述基于学习的图像压缩。在一个实现中，具有第一组学习视觉知识原语的编码器在压缩之前从图像中排除视觉信息。具有独立学习的视觉知识图元组的解码器在解压缩之后将排除的视觉信息合成到图像中。编码器和解码器相对于在编码器处排除的信息和在解码器处合成的信息去耦合。这导致优异的数据压缩，因为在编码器处排除的信息完全丢弃并且不传送到解码器。在解码器处合成的原始视觉元素可能不同于在编码器处丢弃的原始视觉元素，但是所产生的重构图像在听觉上等同于原始图像。

55. 发明授权

US08019171B2 Vision-based compression 有权
标题翻译：基于视觉的压缩
公开(公告)号：US08019171B2
公开(公告)日：2011-09-13
申请号：US11736900
申请日：2007-04-18
申请人： Xiaoyan Sun , Feng Wu , Shipeng Li , Dong Liu
发明人： Xiaoyan Sun , Feng Wu , Shipeng Li , Dong Liu
IPC分类号： G06K9/36
CPC分类号： H04N19/12 , G06T7/12 , H04N19/17 , H04N19/61
摘要： Systems and methods provide vision-based image compression. In one implementation, inpainting is the vision-based technique selected to augment a conventional signal-processing-based technique. For some regions of a source image, an exemplary system efficiently extracts and organizes structural edge information instead of compressing the regions. In one implementation, the system applies binary curve fitting to capture the edge information. A structure-aware inpainter in the decoder can then restore the regions via the edge information, which occupies very little data space or minimal bandwidth in a bitstream that is transmitted from encoder to decoder. Key visual components of the image can still be conventionally compressed. Extracting edge information for some regions instead of compressing them considerably increases overall image compression.
摘要翻译：系统和方法提供基于视觉的图像压缩。在一个实现中，修复是基于视觉的技术，其被选择用于增加常规的基于信号处理的技术。对于源图像的一些区域，示例性系统有效地提取并组织结构边缘信息，而不是压缩该区域。在一个实现中，系统应用二进制曲线拟合来捕获边缘信息。然后，解码器中的结构感知输入器可以经由边缘信息来恢复区域，该边缘信息在从编码器传送到解码器的比特流中占据非常小的数据空间或最小带宽。图像的主要视觉部件仍然可以被传统地压缩。为某些区域提取边缘信息而不是压缩边缘信息显着增加了整体图像压缩。

56. 发明授权

US07830958B2 Seamless switching of scalable video bitstreams 有权
标题翻译：可扩展视频比特流的无缝切换
公开(公告)号：US07830958B2
公开(公告)日：2010-11-09
申请号：US11280619
申请日：2005-11-16
申请人： Feng Wu , Shipeng Li , Xiaoyan Sun , Ya-Qin Zhang
发明人： Feng Wu , Shipeng Li , Xiaoyan Sun , Ya-Qin Zhang
IPC分类号： H04N7/12
CPC分类号： G06T9/00 , H04N21/234327 , H04N21/2402 , H04N21/2662
摘要： A seamless bitstream switching schema is presented. The schema takes advantage of both the high coding efficiency of non-scalable bitstreams and the flexibility of scalable bitstreams. Small bandwidth fluctuations are accommodated by the scalability of the bitstreams, while large bandwidth fluctuations are tolerated by switching among scalable bitstreams. This seamless bitstream switching schema significantly improves the efficiency of scalable video coding over a broad range of bit rates.
摘要翻译：提出了无缝比特流切换模式。该模式利用了非可分级比特流的高编码效率和可扩展比特流的灵活性。通过比特流的可扩展性来适应小的带宽波动，而通过在可缩放比特流之间切换来允许大的带宽波动。这种无缝比特流切换架构显着提高了可扩展视频编码在广泛比特率下的效率。

57. 发明授权

US07684494B2 Systems and methods with error resilience in enhancement layer bitstream of scalable video coding 失效
公开(公告)号：US07684494B2
公开(公告)日：2010-03-23
申请号：US10977417
申请日：2004-10-29
申请人： Ya-Qin Zhang , Shipeng Li , Feng Wu , Rong Yan
发明人： Ya-Qin Zhang , Shipeng Li , Feng Wu , Rong Yan
IPC分类号： H04N7/18
CPC分类号： H04N19/29 , H04N19/34 , H04N19/68 , H04N19/89
摘要： A scalable layered video coding scheme that encodes video data frames into multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video, adds error resilience to the enhancement layer. Unique resynchronization marks are inserted into the enhancement layer bitstream in headers associated with each video packet, headers associated with each bit plane, and headers associated with each video-of-plane (VOP) segment. Following transmission of the enhancement layer bitstream, the decoder tries to detect errors in the packets. Upon detection, the decoder seeks forward in the bitstream for the next known resynchronization mark. Once this mark is found, the decoder is able to begin decoding the next video packet. With the addition of many resynchronization marks within each frame, the decoder can recover very quickly and with minimal data loss in the event of a packet loss or channel error in the received enhancement layer bitstream. The video coding scheme also facilitates redundant encoding of header information from the higher-level VOP header down into lower level bit plane headers and video packet headers. Header extension codes are added to the bit plane and video packet headers to identify whether the redundant data is included.

58. 发明申请

US20090245373A1 VIDEO CODING 有权
标题翻译：视频编码
公开(公告)号：US20090245373A1
公开(公告)日：2009-10-01
申请号：US12474821
申请日：2009-05-29
申请人： Alexandros Tourapis , Feng Wu , Shipeng Li
发明人： Alexandros Tourapis , Feng Wu , Shipeng Li
IPC分类号： H04N7/32
CPC分类号： H04N19/109 , H04N19/147 , H04N19/176 , H04N19/513 , H04N19/52 , H04N19/56 , H04N19/573 , H04N19/577
摘要： Improved video coding is described to encode video data within a sequence of video frames. To this end, at least a portion of a reference frame is encoded to include motion information associated with the portion of the reference frame. At least a portion of a predictable frame that includes video data predictively correlated to said portion of said reference frame is defined based on the motion information. At least said portion of the predictable frame is encoded without including corresponding motion information and including mode identifying data. The mode identifying data indicate that the encoded portion of the predictable frame can be directly derived using at least the motion information associated with the portion of the reference frame.
摘要翻译：描述了改进的视频编码以对视频帧序列内的视频数据进行编码。为此，参考帧的至少一部分被编码以包括与参考帧的该部分相关联的运动信息。基于运动信息来定义包括与所述参考帧的所述部分预测相关的视频数据的可预测帧的至少一部分。可预测帧的至少所述部分被编码而不包括对应的运动信息并且包括模式识别数据。模式识别数据指示可以使用至少与参考帧的部分相关联的运动信息直接导出可预测帧的编码部分。

59. 发明授权

US07565020B2 System and method for image coding employing a hybrid directional prediction and wavelet lifting 有权
标题翻译：采用混合方向预测和小波提升的图像编码系统和方法
公开(公告)号：US07565020B2
公开(公告)日：2009-07-21
申请号：US10884230
申请日：2004-07-03
申请人： Feng Wu , Shipeng Li
发明人： Feng Wu , Shipeng Li
IPC分类号： G06K9/36
CPC分类号： H04N19/19 , H04N19/11 , H04N19/122 , H04N19/13 , H04N19/14 , H04N19/147 , H04N19/61 , H04N19/63
摘要： A system and method that provides an efficient scheme to code images and video by exploiting spatial correlations within an image by employing hybrid directional prediction and lifting wavelet techniques.
摘要翻译：一种通过采用混合方向预测和提升小波技术，通过利用图像内的空间相关性来提供编码图像和视频的有效方案的系统和方法。

60. 发明申请

US20080292005A1 Enhancement layer switching for scalable video coding 有权
公开(公告)号：US20080292005A1
公开(公告)日：2008-11-27
申请号：US12112821
申请日：2008-04-30
申请人： Jizheng Xu , Feng Wu , Shipeng Li
发明人： Jizheng Xu , Feng Wu , Shipeng Li
IPC分类号： H04N7/26 , H04N11/02
CPC分类号： H04N21/2662 , H04N19/115 , H04N19/164 , H04N19/187 , H04N19/34 , H04N19/37 , H04N19/61 , H04N19/70 , H04N21/234327 , H04N21/2402 , H04N21/8451
摘要： An exemplary system includes a data encoder generating a base layer bitstream encoded at a base bit-rate, and a plurality of enhancement layer bitstreams encoded at different enhancement layer bit-rates, and a bitstream selection module selecting one of the enhancement layer bitstreams every video frame based on available channel bandwidth. A method includes transmitting a first enhancement layer bitstream encoded at a first bit-rate, detecting a transition in network bandwidth through a switching bit-rate, and transmitting a second enhancement layer bitstream encoded at a second bit-rate based on the transition in network bandwidth.

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