专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明申请

US20120250772A1 MULTI-THREADED IMPLEMENTATIONS OF DEBLOCK FILTERING 有权
标题翻译：多重螺旋式滤波器的实现
公开(公告)号：US20120250772A1
公开(公告)日：2012-10-04
申请号：US13078852
申请日：2011-04-01
申请人： Wenfeng Gao , Yongjun Wu , Shyam Sadhwani
发明人： Wenfeng Gao , Yongjun Wu , Shyam Sadhwani
IPC分类号： H04N7/26
CPC分类号： H04N19/865 , H04N19/117 , H04N19/127 , H04N19/157 , H04N19/159 , H04N19/16 , H04N19/172 , H04N19/436 , H04N19/82 , H04N19/86
摘要： Multi-threaded implementations of deblock filtering improve encoding and/or decoding efficiency. For example, a video encoder or decoder partitions a video picture into multiple segments. The encoder/decoder selects between multiple different patterns for splitting operations of deblock filtering into multiple passes. The encoder/decoder organizes the deblock filtering as multiple tasks, where a given task includes the operations of one of the passes for one of the segments. The encoder/decoder then performs the tasks with multiple threads. The performance of the tasks is constrained by task dependencies which, in general, are based at least in part on which lines of the picture are in the respective segments and which deblock filtering operations are in the respective passes. The task dependencies can include a cross-pass, cross-segment dependency between a given pass of a given segment and an adjacent pass of an adjacent segment.
摘要翻译：去块滤波的多线程实现提高了编码和/或解码效率。例如，视频编码器或解码器将视频图像分割成多个段。编码器/解码器在多个不同的模式之间进行选择，用于将去块滤波的分割操作分成多个通道。编码器/解码器将去块滤波器组织为多个任务，其中给定任务包括其中一个段的一个通路的操作。然后，编码器/解码器使用多个线程执行任务。任务的执行受到任务依赖性的约束，通常，至少部分地基于图片的哪些行在相应的段中，以及哪些去块过滤操作在相应的遍历中。任务依赖性可以包括给定段的给定遍和相邻段的相邻段之间的交叉遍，跨段依赖性。

42. 发明授权

US08254455B2 Computing collocated macroblock information for direct mode macroblocks 有权
标题翻译：计算直接模式宏块的并置宏块信息
公开(公告)号：US08254455B2
公开(公告)日：2012-08-28
申请号：US11824550
申请日：2007-06-30
申请人： Yongjun Wu , William Chen , Weidong Zhao
发明人： Yongjun Wu , William Chen , Weidong Zhao
IPC分类号： H04N7/12
CPC分类号： H04N19/86 , H04N19/117 , H04N19/132 , H04N19/154 , H04N19/172 , H04N19/176 , H04N19/436 , H04N19/44 , H04N19/587 , H04N19/61 , H04N19/89 , H04N19/91
摘要： Video decoding innovations for multithreading implementations and graphics processor unit (“GPU”) implementations are described. For example, for multithreaded decoding, a decoder uses innovations in the areas of layered data structures, picture extent discovery, a picture command queue, and/or task scheduling for multithreading. Or, for a GPU implementation, a decoder uses innovations in the areas of inverse transforms, inverse quantization, fractional interpolation, intra prediction using waves, loop filtering using waves, memory usage and/or performance-adaptive loop filtering. Innovations are also described in the areas of error handling and recovery, determination of neighbor availability for operations such as context modeling and intra prediction, CABAC decoding, computation of collocated information for direct mode macroblocks in B slices, reduction of memory consumption, implementation of trick play modes, and picture dropping for quality adjustment.
摘要翻译：描述了用于多线程实现和图形处理器单元（“GPU”）实现的视频解码创新。例如，对于多线程解码，解码器在分层数据结构，图像范围发现，图像命令队列和/或多线程的任务调度的领域中使用创新。或者，对于GPU实现，解码器在逆变换，逆量化，分数插值，使用波的帧内预测，使用波的循环滤波，存储器使用和/或性能自适应环路滤波的领域中使用创新。创新还在错误处理和恢复领域进行了描述，确定了上下文建模和帧内预测等操作的邻居可用性，CABAC解码，B片中直接模式宏块的并置信息的计算，内存消耗的减少，技巧的实现播放模式和图片下降以进行质量调整。

43. 发明申请

US20120155550A1 AUTO-REGRESSIVE EDGE-DIRECTED INTERPOLATION WITH BACKWARD PROJECTION CONSTRAINT 有权
标题翻译：具有后向投影约束的自回归边缘指向插值
公开(公告)号：US20120155550A1
公开(公告)日：2012-06-21
申请号：US12972288
申请日：2010-12-17
申请人： Yongjun Wu , Wenfeng Gao
发明人： Yongjun Wu , Wenfeng Gao
IPC分类号： H04N7/26 , G06K9/32
CPC分类号： H04N7/0142 , H04N19/117 , H04N19/14 , H04N19/176 , H04N19/59 , H04N19/80
摘要： Techniques and tools for interpolation of image/video content are described. For example, a tool such as a display processing module in a computing device receives pixel values of a low-resolution picture and determines an interpolated pixel value between a set of the pixel values from the low-resolution picture. The tool uses auto-regressive edge-directed interpolation that incorporates a backward projection constraint (AR-EDIBC). As part of the AR-EDIBC, the tool can compute auto-regressive (AR) coefficients then apply the AR coefficients to the set of pixel values to determine the interpolated pixel value. For the backward projection constraint, the tool accounts for effects of projecting interpolated pixel values back to the pixel values of the low-resolution picture. The tool stores the interpolated pixel values and pixel values from the low-resolution picture as part of a high-resolution picture. The tool can adaptively use AR-EDIBC depending on content and other factors.
摘要翻译：描述了图像/视频内容插值的技术和工具。例如，诸如计算装置中的显示处理模块的工具接收低分辨率图像的像素值，并确定来自低分辨率图像的一组像素值之间的内插像素值。该工具使用包含反向投影约束（AR-EDIBC）的自回归边缘向内插法。作为AR-EDIBC的一部分，该工具可以计算自回归（AR）系数，然后将AR系数应用于像素值集合以确定内插像素值。对于反向投影约束，该工具考虑将内插像素值投影回到低分辨率图像的像素值的效果。该工具将来自低分辨率图像的内插像素值和像素值存储为高分辨率图像的一部分。该工具可以根据内容和其他因素自适应地使用AR-EDIBC。

44. 发明申请

US20120147973A1 LOW-LATENCY VIDEO DECODING 有权
标题翻译：低乐视频解码
公开(公告)号：US20120147973A1
公开(公告)日：2012-06-14
申请号：US12966914
申请日：2010-12-13
申请人： Yongjun Wu , Gang Ji , Shyam Sadhwani
发明人： Yongjun Wu , Gang Ji , Shyam Sadhwani
IPC分类号： H04N7/26
CPC分类号： H04N19/188 , H04N19/103 , H04N19/156 , H04N19/1883 , H04N19/42 , H04N19/44 , H04N19/70
摘要： Techniques and tools for reducing latency in video decoding for real-time communication applications that emphasize low delay. For example, a tool such as a video decoder selects a low-latency decoding mode. Based on the selected decoding mode, the tool adjusts output timing determination, picture boundary detection, number of pictures in flight and/or jitter buffer utilization. For low-latency decoding, the tool can use a frame count syntax element to set initial output delay for a decoded picture buffer, and the tool can use auxiliary delimiter syntax elements to detect picture boundaries. To further reduce delay in low-latency decoding, the tool can reduce number of pictures in flight for multi-threaded decoding and reduce or remove jitter buffers. The tool receives encoded data, performs decoding according to the selected decoding mode to reconstruct pictures, and outputs the pictures for display.
摘要翻译：用于减少视频解码中延迟延迟的技术和工具，用于强调低延迟的实时通信应用。例如，诸如视频解码器的工具选择低延迟解码模式。基于选择的解码模式，该工具调整输出定时确定，图像边界检测，飞行中的图像数和/或抖动缓冲器利用率。对于低延迟解码，该工具可以使用帧计数语法元素为解码图像缓冲区设置初始输出延迟，并且该工具可以使用辅助分隔符语法元素来检测图像边界。为了进一步减少低延迟解码的延迟，该工具可以减少飞行中用于多线程解码的图片数量，并减少或删除抖动缓冲区。该工具接收编码数据，根据选择的解码模式执行解码以重构图像，并输出用于显示的图像。

45. 发明授权

US08189666B2 Local picture identifier and computation of co-located information 有权
标题翻译：本地图片标识符和共址信息的计算
公开(公告)号：US08189666B2
公开(公告)日：2012-05-29
申请号：US12364325
申请日：2009-02-02
申请人： Yongjun Wu , Naveen Thumpudi , Kim-chyan Gan
发明人： Yongjun Wu , Naveen Thumpudi , Kim-chyan Gan
IPC分类号： H04N7/36 , H04N11/02
CPC分类号： H04N19/44 , H04N19/102 , H04N19/159 , H04N19/176 , H04N19/46 , H04N19/513 , H04N19/61 , H04N19/70
摘要： Video decoding innovations for using local picture identifiers and computing co-located information are described. In one aspect, a decoder identifies reference pictures in a reference picture list of a temporal direct prediction mode macroblock that match reference pictures used by a co-located macroblock using local picture identifiers. In another aspect, a decoder determines whether reference pictures used by blocks are the same by comparing local picture identifiers during calculation of boundary strength. In yet another aspect, a decoder determines a picture type of a picture and based on the picture type selectively skips or simplifies computation of co-located information for use in reconstructing direct prediction mode macroblocks outside the picture.
摘要翻译：描述了使用本地图片标识符和计算共址信息的视频解码创新。在一个方面，解码器识别与使用本地图像标识符的同位置宏块使用的参考图片相匹配的时间直接预测模式宏块的参考图片列表中的参考图片。在另一方面，解码器通过在计算边界强度期间比较局部图像标识符来确定块使用的参考图片是否相同。在另一方面，解码器确定图像的图像类型并且基于图像类型有选择地跳过或简化用于重建图像外部的直接预测模式宏块的共位信息的计算。

46. 发明申请

US20120099652A1 METHOD AND APPARATUS FOR SCALABLE MOTION VECTOR CODING 审中-公开
标题翻译：用于可移动运动矢量编码的方法和装置
公开(公告)号：US20120099652A1
公开(公告)日：2012-04-26
申请号：US13338795
申请日：2011-12-28
申请人： John W. WOODS , Yongjun Wu
发明人： John W. WOODS , Yongjun Wu
IPC分类号： H04N7/32 , H04N7/26
CPC分类号： H04N19/615 , H04N19/13 , H04N19/31 , H04N19/36 , H04N19/517 , H04N19/61 , H04N19/63 , H04N19/647
摘要： A method and apparatus for scalable coding of a motion vector generated during motion estimation, in which a generated motion vector field is separated into a base layer and an enhancement layer according to pixel accuracies to obtain a layered structure for a motion vector. In addition, the motion vector field has a layered structure including a base layer composed of motion vectors of blocks larger than or equal to a predetermined size and at least one enhancement layer composed of motion vectors of blocks smaller than a predetermined size.
摘要翻译：一种用于在运动估计期间生成的运动矢量的可缩放编码的方法和装置，其中根据像素精度将生成的运动矢量场分成基本层和增强层，以获得用于运动矢量的分层结构。此外，运动矢量场具有分层结构，其包括由大于或等于预定大小的块的运动矢量构成的基本层和由小于预定大小的块的运动矢量组成的至少一个增强层。

47. 发明授权

US09824426B2 Reduced latency video stabilization 有权
公开(公告)号：US09824426B2
公开(公告)日：2017-11-21
申请号：US13195776
申请日：2011-08-01
申请人： Yongjun Wu , Matthew Wozniak , Shyam Sadhwani , Naveen Thumpudi
发明人： Yongjun Wu , Matthew Wozniak , Shyam Sadhwani , Naveen Thumpudi
IPC分类号： H04N5/228 , H04N5/232 , G06T5/00
CPC分类号： G06T5/002 , G06T2207/20182 , H04N5/23254 , H04N5/23267
摘要： Reduced latency video stabilization methods and tools generate truncated filters for use in the temporal smoothing of global motion transforms representing jittery motion in captured video. The truncated filters comprise future and past tap counts that can be different from each other and are typically less than those of a baseline filter providing a baseline of video stabilization quality. The truncated filter future tap count can be determined experimentally by comparing a smoothed global motion transform set generated by applying a baseline filter to a video segment to those generated by multiple test filter with varying future tap counts, then settings the truncated filter future tap count based on an inflection point on an error-future tap count curve. A similar approach can be used to determine the truncated filter past tap count.

48. 发明授权

US09788018B2 Error concealment techniques in video decoding 有权
公开(公告)号：US09788018B2
公开(公告)日：2017-10-10
申请号：US12217039
申请日：2008-06-30
申请人： Yongjun Wu , Naveen Thumpudi , Daniel Dinu , William R. Sanders
发明人： Yongjun Wu , Naveen Thumpudi , Daniel Dinu , William R. Sanders
IPC分类号： H04N7/12 , H04N19/895
CPC分类号： H04N19/895
摘要： Error concealment techniques for video decoding are described. For example, a video decoder after finding a corrupted picture in a bit stream, finds a suitable neighbor for the corrupted picture. For example, the video decoder favors pictures with the same parity as the corrupted picture and considers picture order count and picture corruption in choosing a neighbor. The decoder then modifies syntax elements for the encoded video in the bit stream to allow the neighbor to be used in concealing the corruption in the corrupted picture. The modification of syntax elements can depend on the particular video decoder implementation. For example, in a software-only multithreaded video decoder, a task graph is modified, while in a system utilizing video acceleration, syntax elements for reference lists are modified.

49. 发明申请

US20160277751A1 PACKAGING/MUX AND UNPACKAGING/DEMUX OF GEOMETRIC DATA TOGETHER WITH VIDEO DATA 审中-公开
标题翻译：包装/多路复用器和数字数据的数字数据解包/解密
公开(公告)号：US20160277751A1
公开(公告)日：2016-09-22
申请号：US14663364
申请日：2015-03-19
申请人： Patrick J. Sweeney , Yongjun Wu , Shyam Sadhwani
发明人： Patrick J. Sweeney , Yongjun Wu , Shyam Sadhwani
IPC分类号： H04N19/169 , H04N19/12 , H04N19/70 , H04N19/172
CPC分类号： H04N19/188 , H04N19/12 , H04N19/172 , H04N19/20 , H04N19/25 , H04N19/46 , H04N19/70
摘要： Technologies are described herein for providing enhanced packaging, coding, decoding and unpackaging of geometric data. In some configurations, geometric data is obtained by a device. The geometric data is partitioned into data partitions representing reconstruction information for video frames. The data partitions representing frames are then converted and integrated into a network abstraction layer of a bit stream. Geometric data may be obtained from the bit stream by accessing the data partitions from the network abstraction layer. The data partitions can be then processed into geometric data for further processing, such as the reconstruction, generation, display or processing of a three dimensional (3D) object modeled by the geometric data.
摘要翻译：本文描述了技术，用于提供增强的封装，编码，解码和拆封几何数据。在某些配置中，几何数据由设备获得。几何数据被分割成表示视频帧的重建信息的数据分区。然后将表示帧的数据分区转换并集成到位流的网络抽象层中。可以通过从网络抽象层访问数据分区从比特流获得几何数据。然后可以将数据分区处理成用于进一步处理的几何数据，例如由几何数据建模的三维（3D）对象的重建，生成，显示或处理。

50. 发明授权

US09241167B2 Metadata assisted video decoding 有权
标题翻译：元数据辅助视频解码
公开(公告)号：US09241167B2
公开(公告)日：2016-01-19
申请号：US13399769
申请日：2012-02-17
申请人： Yongjun Wu , Shyam Sadhwani , Naveen Thumpudi
发明人： Yongjun Wu , Shyam Sadhwani , Naveen Thumpudi
IPC分类号： H04N7/26 , H04N19/157 , H04N19/12 , H04N19/46
CPC分类号： H04N19/44 , H04N19/103 , H04N19/12 , H04N19/129 , H04N19/157 , H04N19/174 , H04N19/176 , H04N19/46 , H04N19/70
摘要： A video decoder is disclosed that uses metadata in order to make optimization decisions. In one embodiment, metadata is used to choose which of multiple available decoder engines should receive a video sequence. In another embodiment, the optimization decisions can be based on length and location metadata information associated with a video sequence. Using such metadata information, a decoder engine can skip start-code scanning to make the decoding process more efficient. Also based on the choice of decoder engine, it can decide whether emulation prevention byte removal shall happen together with start code scanning or not.
摘要翻译：公开了使用元数据以进行优化决定的视频解码器。在一个实施例中，使用元数据来选择多个可用解码器引擎应当接收视频序列中的哪一个。在另一个实施例中，优化决定可以基于与视频序列相关联的长度和位置元数据信息。使用这样的元数据信息，解码器引擎可以跳过起始码扫描，以使解码过程更有效率。同样基于解码器引擎的选择，它可以决定是否与启动代码扫描一起发生仿真预防字节删除。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式