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21. 发明申请

US20080112626A1 Image Compression Based On Parameter-Assisted Inpainting 有权
标题翻译：基于参数辅助印刷的图像压缩
公开(公告)号：US20080112626A1
公开(公告)日：2008-05-15
申请号：US11558755
申请日：2006-11-10
申请人： Xiaoyan Sun , Feng Wu , Zhiwei Xiong , Shipeng Li
发明人： Xiaoyan Sun , Feng Wu , Zhiwei Xiong , Shipeng Li
IPC分类号： G06K9/36
CPC分类号： H04N19/17 , G06K9/0008 , G06K9/00744 , G06T9/00 , H04N19/134
摘要： Systems and methods provide image compression based on parameter-assisted inpainting. In one implementation of an encoder, an image is partitioned into blocks and the blocks classified as smooth or unsmooth, based on the degree of visual edge content and chromatic variation in each block. Image content of the unsmooth blocks is compressed, while image content of the smooth blocks is summarized by parameters, but not compressed. The parameters, once obtained, may also be compressed. At a decoders the compressed image content of the unsmooth blocks and the compressed parameters of the smooth blocks are each decompressed. Each smooth block is then reconstructed by inpainting, guided by the parameters in order to impart visual detail from the original image that cannot be implied from the image content of neighboring blocks that have been decoded.
摘要翻译：系统和方法提供基于参数辅助修复的图像压缩。在编码器的一个实现中，基于每个块中的视觉边缘内容的程度和色度变化，将图像划分为块，并将块分类为平滑或不平滑。不平滑块的图像内容被压缩，而平滑块的图像内容由参数汇总，但不被压缩。一旦获得的参数也可以被压缩。在解码器处，解压缩不平滑块的压缩图像内容和平滑块的压缩参数。然后通过修饰重建每个平滑块，由参数引导，以便从原始图像传递不能从已经解码的相邻块的图像内容中隐含的视觉细节。

22. 发明申请

US20070248272A1 Vision-Based Compression 有权
标题翻译：基于视觉的压缩
公开(公告)号：US20070248272A1
公开(公告)日：2007-10-25
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。

23. 发明申请

US20060067401A1 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：US20060067401A1
公开(公告)日：2006-03-30
申请号：US11280095
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： H04N11/04 , H04N7/12 , H04B1/66 , H04N11/02
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。

24. 发明授权

US06907070B2 Drifting reduction and macroblock-based control in progressive fine granularity scalable video coding 有权
公开(公告)号：US06907070B2
公开(公告)日：2005-06-14
申请号：US10007074
申请日：2001-11-08
申请人： Feng Wu , Shipeng Li , Ya-Qin Zhang , Bing Zeng , Xiaoyan Sun
发明人： Feng Wu , Shipeng Li , Ya-Qin Zhang , Bing Zeng , Xiaoyan Sun
IPC分类号： H04N7/26 , H04N7/12 , H04N11/02
CPC分类号： H04N19/34 , H04N19/51
摘要： A motion-compensated video encoding scheme employs progressive fine-granularity layered coding to encode macroblocks of video data into frames having 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 different quality layers in reference frames. The video encoding scheme estimates drifting errors during the encoding and chooses a coding mode for each macroblock in the enhancement layer to maximize high coding efficiency while minimizing drifting errors.

25. 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。

26. 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。

27. 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。

28. 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。

29. 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。

30. 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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