公开(公告)号：US09313509B2

公开(公告)日：2016-04-12

申请号：US12815029

申请日：2010-06-14

申请人： Chih-Lung Lin ,  Shankar Regunathan ,  Sridhar Srinivasan

发明人： Chih-Lung Lin ,  Shankar Regunathan ,  Sridhar Srinivasan

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/17 ,  H04N19/176 ,  H04N19/70 ,  H04N19/46 ,  H04N19/61 ,  H04N19/124 ,  H04N19/126 ,  H04N19/136 ,  H04N19/137 ,  H04N19/18

CPC分类号： H04N19/18 ,  H04N19/124 ,  H04N19/126 ,  H04N19/136 ,  H04N19/137 ,  H04N19/17 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/44 ,  H04N19/46 ,  H04N19/61 ,  H04N19/625 ,  H04N19/70 ,  H04N19/91

摘要： Described tools and techniques relate to signaling for DC coefficients at small quantization step sizes. The techniques and tools can be used in combination or independently. For example, a tool such as a video encoder or decoder processes a VLC that indicates a DC differential for a DC coefficient, a FLC that indicates a value refinement for the DC differential, and a third code that indicates the sign for the DC differential. Even with the small quantization step sizes, the tool uses a VLC table with DC differentials for DC coefficients above the small quantization step sizes. The FLCs for DC differentials have lengths that vary depending on quantization step size.

摘要翻译： 描述的工具和技术涉及在小量化步长下用于DC系数的信令。 技术和工具可以组合使用或独立使用。 例如，诸如视频编码器或解码器的工具处理指示DC系数的DC差分的VLC，指示DC差分的值细化的FLC以及指示DC差分的符号的第三代码。 即使使用较小的量化步长，该工具也会使用具有DC系数的直流差分的VLC表，其高于小量化步长。 用于DC差分的FLC具有随量化步长变化的长度。

公开(公告)号：US09077960B2

公开(公告)日：2015-07-07

申请号：US11203007

申请日：2005-08-12

申请人： Sridhar Srinivasan ,  Chengjie Tu ,  Shankar Regunathan

发明人： Sridhar Srinivasan ,  Chengjie Tu ,  Shankar Regunathan

IPC分类号： H04N7/12 ,  H04N19/14 ,  H04N19/132 ,  H04N19/176 ,  H04N19/593 ,  H04N19/46 ,  H04N19/91

CPC分类号： H04N19/14 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593 ,  H04N19/91

摘要： A block transform-based digital media codec efficiently compresses digital media data using block patterns representing whether a block's coefficients are zero-valued, such that their explicit encoding is skipped. Because the block patterns can have widely varying probability distributions, the codec adaptively chooses a prediction mode for modifying the block patterns (e.g., based on spatial prediction, or inverting) to enhance their compression using entropy coding techniques. Further, with high spatial correlation of block patterns, the codec encodes a meta block pattern for a region indicating whether all block patterns of the region represent zero-valued coefficient blocks. In such cases, the codec can then also omit explicitly encoding the block patterns in those regions.

摘要翻译： 基于块变换的数字媒体编解码器使用表示块的系数是否为零值的块模式来有效地压缩数字媒体数据，使得它们的显式编码被跳过。 由于块图案可以具有广泛变化的概率分布，所以编解码器自适应地选择用于修改块模式的预测模式（例如，基于空间预测或反转），以使用熵编码技术增强其压缩。 此外，随着块模式的高空间相关性，编解码器编码用于指示该区域的所有块模式是否表示零值系数块的区域的元块模式。 在这种情况下，编解码器也可以省略对这些区域中的块模式的明确编码。

公开(公告)号：US08949414B2

公开(公告)日：2015-02-03

申请号：US13337706

申请日：2011-12-27

申请人： Murali Raja ,  Sridhar Srinivasan ,  Saravana Annamalaisami ,  Devesh Prakash ,  Josephine Suganthi ,  Anil Shetty

发明人： Murali Raja ,  Sridhar Srinivasan ,  Saravana Annamalaisami ,  Devesh Prakash ,  Josephine Suganthi ,  Anil Shetty

IPC分类号： G06F15/173 ,  H04L12/26 ,  H04L29/06

CPC分类号： H04L43/028 ,  H04L29/06 ,  H04L43/00

摘要： The present invention is directed towards systems and methods for aggregating and providing statistics from cores of a multi-core system intermediary between one or more clients and servers. The system may maintain in shared memory a global device number for each core of the multi-core system. The system may provide a thread for each core of the multi-core system to gather data from the corresponding core. A first thread may generate aggregated statistics from a corresponding core by parsing the gathered data from the corresponding core. The first thread may transfer the generated statistics to a statistics log according to a schedule. The system may adaptively reschedule the transfer by monitoring the operation of each computing thread. Responsive to a request from a client, an agent of the client may obtain statistics from the statistics log.

摘要翻译： 本发明涉及用于从一个或多个客户端和服务器之间的多核系统中介的核聚合和提供统计信息的系统和方法。 该系统可以在共享存储器中维护多核系统的每个核心的全局设备号。 系统可以为多核系统的每个核心提供线程，以从相应的核心收集数据。 第一个线程可以通过从相应的核心解析收集的数据来从相应的核心生成聚合的统计信息。 第一个线程可以根据时间表将生成的统计信息传输到统计日志。 系统可以通过监视每个计算线程的操作来自适应地重新调度传输。 响应于客户端的请求，客户端的代理可以从统计日志中获取统计信息。

公开(公告)号：US08599925B2

公开(公告)日：2013-12-03

申请号：US11203008

申请日：2005-08-12

申请人： Sridhar Srinivasan

发明人： Sridhar Srinivasan

IPC分类号： H04N7/12

CPC分类号： H03M7/46 ,  H04N19/30 ,  H04N19/51 ,  H04N19/60 ,  H04N19/91 ,  H04N19/93

摘要： A block transform-based digital media codec more efficiently encodes transform coefficients by jointly-coding non-zero coefficients along with succeeding runs of zero-value coefficients. When a non-zero coefficient is the last in its block, a last indicator is substituted for the run value in the symbol for that coefficient. Initial non-zero coefficients are indicated in a special symbol which jointly-codes the non-zero coefficient along with initial and subsequent runs of zeroes. The codec allows for multiple coding contexts by recognizing breaks in runs of non-zero coefficients and coding non-zero coefficients on either side of such a break separately. The codec also reduces code table size by indicating in each symbol whether a non-zero coefficient has absolute value greater than 1 and whether runs of zeros have positive value, and separately encodes the level of the coefficients and the length of the runs outside of the symbols.

摘要翻译： 基于块变换的数字媒体编解码器通过联合编码非零系数以及随后的零值系数运行来更有效地对变换系数进行编码。 当非零系数是其块中的最后一个时，最后一个指标代替该系数的符号中的运行值。 初始非零系数以特殊符号表示，该特殊符号将非零系数与初始和后续运行零共同编码。 编解码器通过识别非零系数的运行中的断点和分别在这样的断点的任一侧上编码非零系数来允许多个编码上下文。 编解码器还通过在每个符号中指示非零系数是否具有大于1的绝对值并且零的运行是否具有正值并且分别编码系数的电平和在 符号。

公开(公告)号：US08311119B2

公开(公告)日：2012-11-13

申请号：US11026650

申请日：2004-12-31

申请人： Sridhar Srinivasan

发明人： Sridhar Srinivasan

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04

CPC分类号： H04N19/00121 ,  H04N19/129 ,  H04N19/13 ,  H04N19/136 ,  H04N19/18 ,  H04N19/60

摘要： A digital media codec adaptively re-arranges a coefficient scan order of transform coefficients in accordance with the local statistics of the digital media, so that the coefficients can be encoded more efficiently using entropy encoding. The adaptive scan ordering is applied causally at encoding and decoding to avoid explicitly signaling the scan order to the decoder in the compressed digital media stream. For computational efficiency, the adaptive scan order re-arranges the scan order by applying a conditional exchange operation on adjacently ordered coefficient locations via a single traversal of the scan order per update of the statistical analysis.

摘要翻译： 数字媒体编解码器根据数字媒体的本地统计量自适应地重新排列变换系数的系数扫描顺序，从而可以使用熵编码更有效地编码系数。 自适应扫描排序在编码和解码时被原理应用，以避免在压缩的数字媒体流中将扫描顺序明确地发送给解码器。 为了计算效率，自适应扫描顺序通过对统计分析的每次更新的扫描顺序的单次遍历对相邻有序系数位置应用条件交换操作重新排列扫描顺序。

公开(公告)号：US08275209B2

公开(公告)日：2012-09-25

申请号：US12571365

申请日：2009-09-30

申请人： Daniel Schonberg ,  Shankar L. Regunathan ,  Shijun Sun ,  Gary J. Sullivan ,  Zhi Zhou ,  Sridhar Srinivasan

发明人： Daniel Schonberg ,  Shankar L. Regunathan ,  Shijun Sun ,  Gary J. Sullivan ,  Zhi Zhou ,  Sridhar Srinivasan

IPC分类号： G06K9/36

CPC分类号： G06F17/147 ,  H04N19/117 ,  H04N19/122 ,  H04N19/14 ,  H04N19/176 ,  H04N19/60 ,  H04N19/86

摘要： In certain embodiments, overlap operators are applied during encoding and/or decoding of digital media, where the overlap operators have reduced DC gain mismatch and/or DC leakage between interior overlap operators and overlap operators at the edge and/or corner. In other embodiments, information indicating a selected tile boundary option for overlap processing can be encoded and/or decoded. The selected tile boundary option indicates one of a hard tile boundary option and a soft tile boundary option for processing with overlap operators. Overlap transform processing can then be applied based at least in part on the selected tile boundary option.

摘要翻译： 在某些实施例中，在数字媒体的编码和/或解码期间应用重叠运算符，其中重叠运算符在边缘和/或角落处内部重叠运算符和重叠运算符之间具有降低的DC增益失配和/或DC泄漏。 在其他实施例中，可以编码和/或解码指示用于重叠处理的所选择的瓦片边界选项的信息。 所选的瓦片边界选项指示用于使用重叠运算符进行处理的硬瓦片边界选项和软瓦片边界选项之一。 然后可以至少部分地基于所选择的瓦片边界选项来应用重叠变换处理。

公开(公告)号：US08265148B2

公开(公告)日：2012-09-11

申请号：US11838758

申请日：2007-08-14

申请人： Sridhar Srinivasan ,  Shankar Regunathan

发明人： Sridhar Srinivasan ,  Shankar Regunathan

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04B1/66

CPC分类号： H04N19/61 ,  H04N19/17 ,  H04N19/186 ,  H04N19/46 ,  H04N19/51 ,  H04N19/517 ,  H04N19/53 ,  H04N19/70 ,  H04N19/85 ,  H04N19/91 ,  H04N19/93

摘要： Techniques and tools for performing fading compensation in video processing applications are described. For example, during encoding, a video encoder performs fading compensation using fading parameters comprising a scaling parameter and a shifting parameter on one or more reference images. During decoding, a video decoder performs corresponding fading compensation on the one or more reference images.

摘要翻译： 描述了在视频处理应用中执行衰落补偿的技术和工具。 例如，在编码期间，视频编码器使用包括缩放参数和一个或多个参考图像上的移位参数的衰落参数来执行衰落补偿。 在解码期间，视频解码器对一个或多个参考图像执行相应的衰落补偿。

公开(公告)号：US20120226804A1

公开(公告)日：2012-09-06

申请号：US13337706

申请日：2011-12-27

申请人： Murali Raja ,  Sridhar Srinivasan ,  Saravana Annamalaisami ,  Devesh Prakash ,  Josephine Suganthi ,  Anil Shetty

发明人： Murali Raja ,  Sridhar Srinivasan ,  Saravana Annamalaisami ,  Devesh Prakash ,  Josephine Suganthi ,  Anil Shetty

IPC分类号： G06F15/173

CPC分类号： H04L43/028 ,  H04L29/06 ,  H04L43/00

摘要： The present invention is directed towards systems and methods for aggregating and providing statistics from cores of a multi-core system intermediary between one or more clients and servers. The system may maintain in shared memory a global device number for each core of the multi-core system. The system may provide a thread for each core of the multi-core system to gather data from the corresponding core. A first thread may generate aggregated statistics from a corresponding core by parsing the gathered data from the corresponding core. The first thread may transfer the generated statistics to a statistics log according to a schedule. The system may adaptively reschedule the transfer by monitoring the operation of each computing thread. Responsive to a request from a client, an agent of the client may obtain statistics from the statistics log.

摘要翻译： 本发明涉及用于从一个或多个客户端和服务器之间的多核系统中介的核聚合和提供统计信息的系统和方法。 该系统可以在共享存储器中维护多核系统的每个核心的全局设备号。 系统可以为多核系统的每个核心提供线程，以从相应的核心收集数据。 第一个线程可以通过从相应的核心解析收集的数据来从相应的核心生成聚合的统计信息。 第一个线程可以根据时间表将生成的统计信息传输到统计日志。 系统可以通过监视每个计算线程的操作来自适应地重新调度传输。 响应于客户端的请求，客户端的代理可以从统计日志中获取统计信息。

公开(公告)号：US08190444B2

公开(公告)日：2012-05-29

申请号：US11950517

申请日：2007-12-05

申请人： Patrick Baudisch ,  Dan Liebling ,  Sridhar Srinivasan

发明人： Patrick Baudisch ,  Dan Liebling ,  Sridhar Srinivasan

IPC分类号： G06Q10/00

CPC分类号： G06Q30/02 ,  G06Q10/103 ,  G06Q30/0203

摘要： Architecture for providing feedback to a viewer and/or contributor on fashion and other personal appearance decisions that the contributor desires. The contributor uploads self images for viewing and rating (or voting) by viewers who choose provide an opinion on different fashion and/or cosmetic looks of the contributor. The contributor takes images show the contributor presented with a number (e.g., two) of different fashion choices. The snapshots can then be processed for upload to a website or other accessible location by one or more viewers. The viewers can cast a vote for one of the images by selecting the desired image, in response to which the viewer and/or contributor will be presented with overall statistics for that set of images as to how other viewers voted, as well as a next set of photos depicting the user in a different fashion and/or cosmetic choice. This process can continue until terminated.

摘要翻译： 用于向观众和/或贡献者提供关于贡献者期望的时尚和其他个人外观决定的反馈的架构。 投稿人上传自己的图片，供观看者评价（或投票），供观众选择对投稿人的不同时尚和/或美容外观提供意见。 贡献者拍摄图像显示呈现出不同时尚选择的数字（例如，两个）的贡献者。 然后可以处理快照，以便由一个或多个观看者上传到网站或其他可访问的位置。 观众可以通过选择所需的图像来投票给其中一个图像，响应于该观看者和/或贡献者将向其呈现关于其他观众投票的该组图像的总体统计，以及下一个 一组以不同的方式描绘用户的照片和/或美容选择。 此过程可以继续，直到终止。

公开(公告)号：US08184694B2

公开(公告)日：2012-05-22

申请号：US11676263

申请日：2007-02-16

申请人： Sridhar Srinivasan

发明人： Sridhar Srinivasan

IPC分类号： H04N7/12

CPC分类号： H04N19/124 ,  H04N19/126 ,  H04N19/136 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61

摘要： A digital media encoder/decoder performs quantization/dequantization based on quantization parameters taken from a harmonic quantizer scale. The harmonic quantizer scale can include a normal portion consisting of quantization parameter values harmonically-related as simple fractions of each other, and a denormal portion of quantizers having a linear or other relation. The encoder/decoder further supports a scaled quantizer mode where quantization is performed based on the quantization parameter as scaled by a fractional value. A compressed domain contrast adjustment is effected by adjusting the quantization parameters in the compressed bitstream, without having to adjust and recode the digital media data in the compressed bitstream.

摘要翻译： 数字媒体编码器/解码器基于从谐波量化器尺度获得的量化参数来执行量化/去量化。 谐波量化器标度可以包括由作为彼此的简单分数彼此谐波相关的量化参数值组成的正常部分，以及具有线性或其他关系的量化器的非正常部分。 编码器/解码器还支持缩放的量化器模式，其中基于由分数值缩放的量化参数来执行量化。 通过调整压缩比特流中的量化参数来实现压缩域对比度调整，而不必对压缩比特流中的数字媒体数据进行调整和重新编码。