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51. 发明申请

US20050195895A1 System and method for robust video coding using progressive fine-granularity scalable (PFGS) coding 有权
公开(公告)号：US20050195895A1
公开(公告)日：2005-09-08
申请号：US11120249
申请日：2005-05-02
申请人： Feng Wu , Shipeng Li , Ya-Qin Zhang
发明人： Feng Wu , Shipeng Li , Ya-Qin Zhang
IPC分类号： G06T9/00 , H04N19/895 , H04N7/12
CPC分类号： H04N19/36 , H04N19/105 , H04N19/157 , H04N19/169 , H04N19/34 , H04N19/503 , H04N19/51 , H04N19/895
摘要： A video encoding scheme employs progressive fine-granularity layered coding to encode video data frames into multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video. Some of the enhancement layers in a current frame are predicted from at least one lower quality layer in a reference frame, whereby the lower quality layer is not necessarily the base layer.

52. 发明申请

US20050190978A1 Barbell lifting for wavelet coding 有权
标题翻译：杠铃提升用于小波编码
公开(公告)号：US20050190978A1
公开(公告)日：2005-09-01
申请号：US10911836
申请日：2004-08-04
申请人： Shipeng Li , Ruiqin Xiong , Lin Luo , Jizheng Xu , Feng Wu
发明人： Shipeng Li , Ruiqin Xiong , Lin Luo , Jizheng Xu , Feng Wu
IPC分类号： G06K9/36 , H04N7/26
CPC分类号： H04N19/635 , H04N19/119 , H04N19/139 , H04N19/61 , H04N19/63
摘要： A method for encoding motion-compensated video data includes generating, for a current frame, a high-pass wavelet coefficient based on a function of pixels in a temporally adjacent frame. The operations are repeated for multiple pixels in an array of pixels in the current frame to form an array of high-pass wavelet coefficients. A low-pass wavelet coefficient is generated based on a function of the high-pass wavelet coefficients. A system for coding video data includes a temporal wavelet decomposition module decomposing a pixel into a high-pass coefficient by performing a discrete wavelet transform on the pixel, a function of pixels in a previous frame, and/or a function of pixels in a subsequent frame. The system includes a motion estimation module generating motion vectors associated with the pixels in the previous frame and in the subsequent frame.
摘要翻译：用于编码运动补偿视频数据的方法包括：基于时间上相邻帧中的像素的函数为当前帧生成高通小波系数。对当前帧中的像素阵列中的多个像素重复操作以形成高通小波系数的阵列。基于高通小波系数的函数产生低通小波系数。用于编码视频数据的系统包括时间小波分解模块，其通过对像素执行离散小波变换，先前帧中的像素的功能和/或随后的像素的函数将像素分解为高通系数帧。该系统包括运动估计模块，其生成与前一帧和随后帧中的像素相关联的运动矢量。

53. 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。

54. 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。

55. 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。

56. 发明授权

US08358693B2 Encoding visual data with computation scheduling and allocation 有权
标题翻译：用计算调度和分配编码视觉数据
公开(公告)号：US08358693B2
公开(公告)日：2013-01-22
申请号：US11457705
申请日：2006-07-14
申请人： Yan Lu , Feng Wu , Wei Pu , Shipeng Li
发明人： Yan Lu , Feng Wu , Wei Pu , Shipeng Li
IPC分类号： H04N7/12 , H04N11/02
CPC分类号： H04N19/567 , H04N19/127 , H04N19/156 , H04N19/172 , H04N19/19 , H04N19/196 , H04N19/43 , H04N19/533 , H04N19/557
摘要： Computation scheduling and allocation for visual communication is described. In one aspect, multiple frames of video data are encoded by allocating for at least a subset of inter-coded frames, on frame-by-frame basis, computational resources to encode the inter-coded frame. To this end, a computational budget to encode a current inter-coded frame is estimated. The estimate is based on the actual computational costs to encode a previous inter-coded frame of video data. Next, sets of operations associated with encoding the current inter-coded frame are analyzed to determine computational resources to implement the operations. If the computational resources exceed the computational budget, complexity of the operations is reduced until the associated computational resources are less than or equal to the computational budget. At this point, the current inter-coded frame is encoded using the operations and the computational budget. This process is repeated for the remaining inter-coded frames of video data.
摘要翻译：描述视觉通信的计算调度和分配。在一个方面，通过在逐帧的基础上为帧间编码帧的至少一个子集分配计算资源来编码帧间编码帧来编码多个视频数据帧。为此，估计用于编码当前帧间编码帧的计算预算。该估计是基于对先前的视频数据的帧间编码帧进行编码的实际计算成本。接下来，分析与当前帧间编码帧的编码相关联的操作集合，以确定用于实现操作的计算资源。如果计算资源超过计算预算，则减少操作的复杂度，直到相关的计算资源小于或等于计算预算。此时，使用操作和计算预算对当前帧间编码帧进行编码。对于视频数据的剩余帧间编码帧重复该过程。

57. 发明授权

US08340192B2 Wyner-Ziv coding with multiple side information 有权
标题翻译： Wyner-Ziv编码与多方信息
公开(公告)号：US08340192B2
公开(公告)日：2012-12-25
申请号：US12047317
申请日：2008-03-12
申请人： Yan Lu , Feng Wu , Mei Guo , Shipeng Li
发明人： Yan Lu , Feng Wu , Mei Guo , Shipeng Li
IPC分类号： H04N11/04
CPC分类号： H03M7/30 , H03M13/2957 , H03M13/6312
摘要： A Wyner-Ziv coding scheme jointly utilizes multiple side information at the decoder is described. A new probability model is introduced based on an extended turbo decoding trellis, so that the transitional probability is calculated from the probabilities conditioned on multiple side information. The proposed scheme handles multiple side information in a multi-dimensional manner to potentially achieve coding performance better than either selecting one side information or generating a single side information by averaging several side information. When the decoder receives multiple streams of parity bits, the conditional probabilities on the parity bits from the multiple streams all contribute in turbo decoding. The errors existing in some of the streams can be automatically eliminated during the decoding process.
摘要翻译：描述了在解码器处共同利用多边信息的Wyner-Ziv编码方案。基于扩展turbo解码网格引入新的概率模型，从而根据多边信息的概率计算过渡概率。所提出的方案以多维方式处理多个侧面信息，以便比选择一个侧面信息或通过平均多个边缘信息来生成单个侧面信息来潜在地实现编码性能。当解码器接收到多个奇偶校验位流时，来自多个流的奇偶校验位的条件概率在turbo解码中都有贡献。在解码过程中可以自动消除一些流中存在的错误。

58. 发明授权

US08165393B2 High dynamic range texture compression 有权
标题翻译：高动态范围纹理压缩
公开(公告)号：US08165393B2
公开(公告)日：2012-04-24
申请号：US12133369
申请日：2008-06-05
申请人： Yan Lu , Wen Sun , Feng Wu , Shipeng Li
发明人： Yan Lu , Wen Sun , Feng Wu , Shipeng Li
IPC分类号： G06K9/36
CPC分类号： G06T9/00
摘要： A method for compressing a high dynamic range (HDR) texture. A first block of texels of the HDR texture in a red-green-blue (RGB) space may be transformed to a second block of texels in a luminance-chrominance space. The first block may have red values, green values and blue values. The second block may have luminance values and chrominance values. The chrominance values may be based on a sum of the red values, a sum of the green values and a sum of the blue values. The luminance values and the chrominance values may be converted to an 8-bit integer format. The luminance values may be modified to restore a local linearity property to the second block. The second block may be compressed.
摘要翻译：一种用于压缩高动态范围（HDR）纹理的方法。红 - 绿 - 蓝（RGB）空间中的HDR纹理的纹素的第一块可以被变换为亮度 - 色度空间中的第二纹理纹理块。第一个块可能具有红色值，绿色值和蓝色值。第二块可以具有亮度值和色度值。色度值可以基于红色值的总和，绿色值的和与蓝色值的和。亮度值和色度值可以被转换成8位整数格式。可以修改亮度值以恢复与第二块的局部线性特性。第二个块可能被压缩。

59. 发明授权

US07714873B2 Strategies for compressing textures 有权
标题翻译：压缩纹理的策略
公开(公告)号：US07714873B2
公开(公告)日：2010-05-11
申请号：US11627171
申请日：2007-01-25
申请人： Andrew C. Flavell , Yan Lu , Wen Sun , Feng Wu , Shipeng Li
发明人： Andrew C. Flavell , Yan Lu , Wen Sun , Feng Wu , Shipeng Li
IPC分类号： G06K9/36 , G06K9/00 , G09G5/02 , G06T17/20 , G06T17/00 , H04B1/66 , H04B14/06
CPC分类号： G06T9/005 , H04N19/186
摘要： A technique is described for compressing textures for use in a graphics application, such as a 3D game application. The technique includes parsing first-compressed texture information (e.g., S3TC texture information) into respective components of the first-compressed texture information (such as main color information, color index information, main alpha information, and alpha index information). The technique then further compresses the respective components to yield second-compressed texture information (referred to as modified compressed texture information or MCT texture information). The MCT texture information can be stored and then decoded to reconstruct the original S3TC texture information for use in the graphics application. Compared to the use of unmodified S3TC texture information, the technique allows more economical storage of texture information, as well as more efficient loading of the texture information from storage to memory.
摘要翻译：描述了一种用于压缩纹理以用于诸如3D游戏应用的图形应用中的技术。该技术包括将第一压缩纹理信息（例如，S3TC纹理信息）解析成第一压缩纹理信息（诸如主色信息，颜色索引信息，主阿尔法信息和阿尔法索引信息）的各个分量。然后，该技术进一步压缩各个组件以产生第二压缩纹理信息（称为修改的压缩纹理信息或MCT纹理信息）。 MCT纹理信息可以被存储然后被解码以重建用于图形应用中的原始S3TC纹理信息。与使用未修改的S3TC纹理信息相比，该技术允许更经济地存储纹理信息，以及更有效地将纹理信息从存储器加载到存储器。

60. 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.

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