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1. 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。

2. 发明授权

US07391809B2 Scalable video transcoding 有权
标题翻译：可扩展视频转码
公开(公告)号：US07391809B2
公开(公告)日：2008-06-24
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
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。

3. 发明申请

US20050129130A1 Color space coding framework 审中-公开
标题翻译：颜色空间编码框架
公开(公告)号：US20050129130A1
公开(公告)日：2005-06-16
申请号：US10733876
申请日：2003-12-10
申请人： Jacky Shen , Feng Wu , Lujun Yuan , Shipeng Li
发明人： Jacky Shen , Feng Wu , Lujun Yuan , Shipeng Li
IPC分类号： H04N7/24 , H04N1/64 , H04N9/64 , H04N11/04 , H04N19/00 , H04N7/12
CPC分类号： H04N1/646 , H04N19/117 , H04N19/176 , H04N19/186 , H04N19/30 , H04N19/40 , H04N19/59 , H04N19/61 , H04N19/635 , H04N19/80
摘要： A coding framework that provides conversions between one or more video formats without the use of a transcoder. A video information stream that includes color information formatted in accordance with a first color space sampling format is split into a base stream and an enhanced stream. The base stream is formatted in accordance with a second color space sampling format. The enhanced stream includes enhanced information that when combined with the base stream re-constructs the first format. During encoding, the enhanced stream may be encoded using spatial information related to the base information stream. An output stream of the encoded base stream and encoded enhanced stream may be interleaved, concatenated, or include independent files for the encoded base stream and the encoded enhanced stream.
摘要翻译：一种编码框架，可在不使用代码转换器的情况下提供一种或多种视频格式之间的转换。包括根据第一颜色空间采样格式格式化的颜色信息的视频信息流被分割成基本流和增强流。基本流根据第二颜色空间采样格式进行格式化。增强流包括增强的信息，当与基本流合并时重新构建第一格式。在编码期间，可以使用与基本信息流相关的空间信息对增强流进行编码。编码的基本流和编码的增强流的输出流可以被交错，级联或包括用于编码的基本流和编码的增强流的独立文件。

4. 发明授权

US08498476B2 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：US08498476B2
公开(公告)日：2013-07-30
申请号：US13429208
申请日：2012-03-23
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： G06K9/00
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。

5. 发明授权

US08208556B2 Video coding using spatio-temporal texture synthesis 有权
标题翻译：视频编码采用时空纹理合成
公开(公告)号：US08208556B2
公开(公告)日：2012-06-26
申请号：US11768862
申请日：2007-06-26
申请人： Xiaoyan Sun , Chunbo Zhu , Feng Wu , Shipeng Li
发明人： Xiaoyan Sun , Chunbo Zhu , Feng Wu , Shipeng Li
IPC分类号： H04N11/04
CPC分类号： G06T7/40 , G06T2207/10016 , H04N19/27 , H04N19/577
摘要： Systems and methods for video coding using spatio-temporal texture synthesis are described. In one aspect, a video data coding pipeline portion of the codec removes texture blocks from the video data to generate coded video data. The removed texture blocks are selected based on an objective determination that each of the remove texture blocks can be synthesized from spatio-temporal neighboring samples during decoding operations. The objective determinations are made using local block-based motion information independent of global motion models. An indication of which texture blocks were removed is provided to a decoder in addition to the coded video data. Decoding logic of the codec decodes the video data using a standard decoding algorithm. The decoding logic also restores the removed texture blocks via spatio-temporal texture synthesis to generate synthesized video data. The decoded and synthesized video data is presented to a user.
摘要翻译：描述使用时空纹理合成的视频编码的系统和方法。一方面，编解码器的视频数据编码流水线部分从视频数据中去除纹理块以产生编码视频数据。基于在解码操作期间可以从空时相邻采样中合成每个去除纹理块的目标确定来选择去除的纹理块。使用与全局运动模型无关的局部基于块的运动信息进行客观确定。去除了纹理块的指示除了编码的视频数据之外还提供给解码器。编解码器的解码逻辑使用标准解码算法解码视频数据。解码逻辑还通过空间 - 时间纹理合成恢复去除的纹理块，以产生合成的视频数据。解码和合成的视频数据被呈现给用户。

6. 发明授权

US08130830B2 Enhancement layer switching for scalable video coding 有权
标题翻译：用于可扩展视频编码的增强层交换
公开(公告)号：US08130830B2
公开(公告)日：2012-03-06
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： H04N7/12 , 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.
摘要翻译：一个示例性系统包括产生以基本比特率编码的基本层比特流的数据编码器和以不同增强层比特率编码的多个增强层比特流，以及比特流选择模块，每个视频选择增强层比特流之一基于可用信道带宽的帧。一种方法包括发送以第一比特率编码的第一增强层比特流，通过切换比特率检测网络带宽中的转换，以及基于网络中的转换来发送以第二比特率编码的第二增强层比特流带宽。

7. 发明申请

US20110170801A1 RESIZING OF DIGITAL IMAGES 有权
标题翻译：数字图像的调整
公开(公告)号：US20110170801A1
公开(公告)日：2011-07-14
申请号：US12684925
申请日：2010-01-09
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： G06K9/32
CPC分类号： G06T3/4007 , G06F3/14 , G09G2320/0613 , G09G2320/0626 , G09G2340/0407
摘要： Digital images are resized according to a prescribed image scaling factor. An original image is re-sampled according to the scaling factor, resulting in an initial resized image. A probability of text (POT) map is generated for the initial resized image, where the POT map specifies a smoothed POT value for each pixel in the initial resized image. A weighting factor (WF) map is generated which maps each different smoothed POT value to a particular WF value. The WF map is used to calculate an adjusted luminance value for each pixel in the initial resized image, resulting in a final resized image.
摘要翻译：数字图像根据规定的图像缩放因子调整大小。根据缩放因子重新采样原始图像，导致初始调整大小的图像。为初始调整大小的图像生成文本（POT）图的概率，其中POT映射指定初始调整大小的图像中每个像素的平滑POT值。生成加权因子（WF）图，其将每个不同的平滑POT值映射到特定的WF值。 WF图用于计算初始调整大小的图像中每个像素的调整亮度值，得到最终调整大小的图像。

8. 发明授权

US07903873B2 Textual image coding 有权
标题翻译：文字图像编码
公开(公告)号：US07903873B2
公开(公告)日：2011-03-08
申请号：US11855075
申请日：2007-09-13
申请人： Yan Lu , Feng Wu , Wenpeng Ding , Shipeng Li
发明人： Yan Lu , Feng Wu , Wenpeng Ding , Shipeng Li
IPC分类号： G06K9/36
CPC分类号： G06T9/00 , H04N1/644 , H04N19/12 , H04N19/124 , H04N19/136 , H04N19/176 , H04N19/186 , H04N19/61 , H04N19/91
摘要： Textual image coding involves coding textual portions of an image. In an example embodiment, a textual block of an image is decomposed into multiple base colors and an index map, with the index map having index values that each reference a base color so as to represent the textual block. A set of neighbor index values are ascertained for a particular index of the index map. A context that matches the neighbor index values is generated from among multiple contexts. The matching context includes a set of symbols. At least one symbol-to-value mapping is determined based on the matching context and a symbol to which the particular index corresponds. The particular index is remapped to a particular value in accordance with the symbol-to-value mapping and the symbol to which the particular index corresponds.
摘要翻译：文本图像编码涉及对图像的文本部分进行编码。在示例实施例中，图像的文本块被分解为多个基色和索引图，索引图具有每个引用基色以便表示文本块的索引值。确定索引图的特定索引的一组邻近索引值。从多个上下文中生成匹配邻居索引值的上下文。匹配的上下文包括一组符号。基于匹配上下文和特定索引对应的符号来确定至少一个符号到值映射。根据符号对值映射和特定索引对应的符号将特定索引重新映射到特定值。

9. 发明申请

US20100111410A1 REMOTE COMPUTING PLATFORMS PROVIDING HIGH-FIDELITY DISPLAY AND INTERACTIVITY FOR CLIENTS 有权
标题翻译：远程计算平台为客户提供高清显示和互动性
公开(公告)号：US20100111410A1
公开(公告)日：2010-05-06
申请号：US12408611
申请日：2009-03-20
申请人： Yan Lu , Huifeng Shen , Feng Wu , Shipeng Li
发明人： Yan Lu , Huifeng Shen , Feng Wu , Shipeng Li
IPC分类号： G06K9/36 , G06F15/16
CPC分类号： G09G5/14 , G06F3/1415 , G06F3/1462 , G09G2340/02 , G09G2350/00 , G09G2360/122 , G09G2360/18 , H04N19/107 , H04N19/136 , H04N19/176 , H04N19/182 , H04N19/186 , H04N19/61 , H04N19/625
摘要： A “Remote Display Generator,” as described herein, provides various techniques for providing high-fidelity displays with highly responsive interactive application experiences to clients across a wide range of network bandwidths for remotely hosted applications. In general, the Remote Display Generator uses a compression-friendly remote display architecture as a core. With this compression architecture, actual screen data from a remote server is read out from the display buffer frame by frame, and then compressed with a unified screen codec. Other technologies, including timer-driven screen update models and adaptive transmission mechanisms, are then integrated with various embodiments of the Remote Display Generator to improve overall user experience by improving display quality and responsiveness to user interaction with remotely hosted applications.
摘要翻译：如本文所述的“远程显示生成器”提供了用于向远程托管应用的广泛的网络带宽的客户端提供具有高响应的交互式应用体验的高保真显示器的各种技术。一般来说，远程显示生成器以压缩友好的远程显示架构为核心。利用这种压缩架构，从显示缓冲器逐帧读出来自远程服务器的实际屏幕数据，然后用统一的屏幕编解码器进行压缩。然后，其他技术（包括定时器驱动的屏幕更新模型和自适应传输机制）与远程显示生成器的各种实施例集成，以通过改善显示质量和响应用户与远程托管应用的交互来提高整体用户体验。

10. 发明授权

US07664185B2 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：US07664185B2
公开(公告)日：2010-02-16
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： 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.
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。

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