公开(公告)号：US07639739B2

公开(公告)日：2009-12-29

申请号：US10286364

申请日：2002-11-01

Applicant: Kenneth Rose ,  Rui Zhang ,  Shankar Regunathan

Inventor： Kenneth Rose ,  Rui Zhang ,  Shankar Regunathan

IPC: H04N7/12

CPC classification number: H04N21/2404 ,  H04N19/102 ,  H04N19/147 ,  H04N19/177 ,  H04N19/188 ,  H04N19/19 ,  H04N19/194 ,  H04N19/30 ,  H04N19/40 ,  H04N19/61 ,  H04N19/65 ,  H04N19/67 ,  H04N19/89 ,  H04N21/234 ,  H04N21/235 ,  H04N21/435 ,  H04N21/6377 ,  H04N21/6473 ,  H04N21/64769 ,  H04N21/658

Abstract: A method is described for efficiently determining total end-to-end distortion of a pre-compressed data stream, such as video streams or other media streams, at the time of delivery over a lossy-network, and for providing adaptive error-resilient delivery schemes based on distortion estimates. The methods can be utilized with single or multilayer packet streams and are particularly well suited for video streams. By way of example, distortion estimates are performed by generating side-information at the time of data stream compression, wherein the side-information is used in conjunction with information about the network status to determine an estimated distortion for the group of packets when the data stream is transported over the network to a destination end. This estimation may be utilized within described resiliency techniques in which the error correction mechanism is selected in response to the estimated distortion, which may be additionally refined in reference to cost factors.

Abstract translation: 描述了一种用于在通过有损网络传送时有效地确定预压缩数据流（例如视频流或其他媒体流）的总端对端失真的方法，并且用于提供自适应的错误弹性传递 基于失真估计的方案。 这些方法可以用于单个或多个分组流，并且特别适合于视频流。 作为示例，通过在数据流压缩时生成旁侧信息来执行失真估计，其中侧信息结合关于网络状态的信息使用，以确定数据组的估计失真 流通过网络传输到目的地端。 可以在所述的弹性技术中使用该估计，其中响应于估计的失真来选择纠错机制，这可以参考成本因素进一步细化。

公开(公告)号：US20080199091A1

公开(公告)日：2008-08-21

申请号：US11772019

申请日：2007-06-29

Applicant: Sridhar Srinivasan ,  Chengjie Tu ,  Shankar Regunathan

Inventor： Sridhar Srinivasan ,  Chengjie Tu ,  Shankar Regunathan

IPC: G06K9/36

CPC classification number: G06T9/00 ,  H04N19/132 ,  H04N19/17 ,  H04N19/176 ,  H04N19/184 ,  H04N19/46 ,  H04N19/60 ,  H04N19/70

Abstract: Techniques and tools for signaling and using image tiling information (such as syntax elements relating index tables and header size), signaling and using windowing information (such as techniques for using windowing parameters when rotating, cropping or flipping images), and signaling and using alpha channel information are described.

Abstract translation: 用于信令和使用图像平铺信息的技术和工具（例如与索引表和报头大小相关的语法元素），信令和使用窗口信息（例如在旋转，裁剪或翻转图像时使用窗口参数的技术），以及信令和使用alpha 描述信道信息。

公开(公告)号：US20080198935A1

公开(公告)日：2008-08-21

申请号：US11772076

申请日：2007-06-29

Applicant: Sridhar Srinivasan ,  Chengjie Tu ,  Shankar Regunathan

Inventor： Sridhar Srinivasan ,  Chengjie Tu ,  Shankar Regunathan

IPC: H04N7/24

CPC classification number: H04N21/6547 ,  H04N19/122 ,  H04N19/156 ,  H04N19/46 ,  H04N19/60

Abstract: A digital media encoder/decoder includes signaling of various modes relating to computation complexity and precision at decoding. The encoder may send a syntax element indicating arithmetic precision (e.g., using 16 or 32-bit operations) of the transform operations performed at decoding. The encoder also may signal whether to apply scaling at the decoder output, which permits a wider dynamic range of intermediate data at decoding, but adds to computational complexity due to the scaling operation.

Abstract translation: 数字媒体编码器/解码器包括在解码时与计算复杂性和精度有关的各种模式的信令。 编码器可以发送指示在解码时执行的变换操作的算术精度（例如，使用16或32位操作）的语法元素。 编码器还可以发信号是否在解码器输出端应用缩放，这允许解码时的中间数据的较宽的动态范围，但由于缩放操作而增加了计算复杂度。

公开(公告)号：US20080198933A1

公开(公告)日：2008-08-21

申请号：US11772077

申请日：2007-06-29

Applicant: Sridhar Srinivasan ,  Chengjie Tu ,  Shankar Regunathan

Inventor： Sridhar Srinivasan ,  Chengjie Tu ,  Shankar Regunathan

IPC: H04N7/26

CPC classification number: H04N19/34 ,  H04N19/13 ,  H04N19/184 ,  H04N19/60

Abstract: A block transform-based digital media codec has a signaling scheme and bitstream syntax to flexibly signal that truncation of less significant information bits of transform coefficients coded as an optional layer of the bitstream has been performed adaptively per region or tile of the image.

Abstract translation: 基于块变换的数字媒体编解码器具有信令方案和比特流语法，以灵活地表示每个图像的每个区域或瓦片自适应地执行编码为比特流的可选层的变换系数的较不重要的信息比特的截断。

公开(公告)号：US20050123274A1

公开(公告)日：2005-06-09

申请号：US10989845

申请日：2004-11-15

Applicant: Regis Crinon ,  Chih-Lung Lin ,  Jie Liang ,  Shankar Regunathan ,  Shuo-Jen Wu ,  Timothy Onders ,  Thomas Holcomb

Inventor： Regis Crinon ,  Chih-Lung Lin ,  Jie Liang ,  Shankar Regunathan ,  Shuo-Jen Wu ,  Timothy Onders ,  Thomas Holcomb

IPC: G11C7/00 ,  H04N5/783 ,  H04N7/12

CPC classification number: H04N21/23424 ,  H04N19/44 ,  H04N19/70 ,  H04N21/44016 ,  H04N21/8455

Abstract: A decoder receives an entry point header comprising plural control parameters for an entry point segment corresponding to the entry point header. The entry point header is in an entry point layer of a bitstream comprising plural layers. The decoder decodes the entry point header. The plural control parameters can include various combinations of control parameters such as a pan scan on/off parameter, a reference frame distance on/off parameter, a loop filtering on/off parameter, a fast chroma motion compensation on/off parameter, an extended range motion vector on/off parameter, a variable sized transform on/off parameter, an overlapped transform on/off parameter, a quantization decision parameter, and an extended differential motion vector coding on/off parameter, a broken link parameter, a closed entry parameter, one or more coded picture size parameters, one or more range mapping parameters, a hypothetical reference decoder buffer parameter, and/or other parameter(s).

Abstract translation: 解码器接收包括与入口点标题相对应的入口点段的多个控制参数的入口点标题。 入口点头在包含多个层的比特流的入口点层中。 解码器解码入口点标题。 多个控制参数可以包括控制参数的各种组合，例如平移扫描开启/关闭参数，参考帧距离开/关参数，循环滤波开/关参数，快速色度运动补偿开/关参数，扩展 范围运动矢量开/关参数，可变大小的变换开/关参数，重叠变换开/关参数，量化决定参数和扩展差分运动矢量编码开/关参数，断链接参数，关闭条目 参数，一个或多个编码图像大小参数，一个或多个范围映射参数，假设参考解码器缓冲器参数和/或其他参数。

公开(公告)号：US20050074061A1

公开(公告)日：2005-04-07

申请号：US10934118

申请日：2004-09-02

Applicant: Jordi Ribas-Corbera ,  Sridhar Srinivasan ,  Shankar Regunathan ,  Regis Crinon

Inventor： Jordi Ribas-Corbera ,  Sridhar Srinivasan ,  Shankar Regunathan ,  Regis Crinon

IPC: H04N7/26 ,  H04N7/36 ,  H04N7/50 ,  H04N7/12

CPC classification number: H04N19/00 ,  H04N19/117 ,  H04N19/124 ,  H04N19/146 ,  H04N19/152 ,  H04N19/159 ,  H04N19/16 ,  H04N19/172 ,  H04N19/176 ,  H04N19/179 ,  H04N19/184 ,  H04N19/46 ,  H04N19/51 ,  H04N19/523 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86

Abstract: Techniques and tools are described for signaling hypothetical reference decoder parameters for video bitstreams, including signaling of buffer fullness. For example, a buffer size syntax element indicates a decoder buffer size, and a buffer fullness syntax element indicates a buffer fullness as a fraction of the decoder buffer size. As another example, buffer fullness is signaled in one or more entry point headers and other hypothetical reference decoder parameters are signaled in a sequence header.

Abstract translation: 描述技术和工具用于信令用于视频比特流的假设参考解码器参数，包括缓冲器充满度的信令。 例如，缓冲器大小语法元素指示解码器缓冲器大小，并且缓冲器充满度语法元素指示缓冲器充满度作为解码器缓冲器大小的一部分。 作为另一示例，在一个或多个入口点标题中用信号通知缓冲器充满度，并且在序列标题中用信号通知其他假设的参考解码器参数。

公开(公告)号：US20050053158A1

公开(公告)日：2005-03-10

申请号：US10933960

申请日：2004-09-03

Applicant: Shankar Regunathan ,  Pohsiang Hsu ,  Ce Wang ,  Chih-Lung Lin ,  Jie Liang ,  Sridhar Srinivasan

Inventor： Shankar Regunathan ,  Pohsiang Hsu ,  Ce Wang ,  Chih-Lung Lin ,  Jie Liang ,  Sridhar Srinivasan

IPC: H04N20060101 ,  H04N7/12 ,  H04N7/26 ,  H04N7/50

CPC classification number: H04N19/86 ,  H04N19/105 ,  H04N19/107 ,  H04N19/166 ,  H04N19/174 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82

Abstract: A video encoder/decoder utilizes a bistream syntax that provides an independently decodable, partial picture unit, which may be in the form of a unit containing one or more contiguous rows of macroblocks (called a slice). This slice layer provides a flexible combination of error-resilience and compression efficiency. The slice layer encodes an efficient addressing mechanism (e.g., a syntax element specifying a beginning macroblock row of the slice layer), as well as an efficient mechanism to optionally retransmit picture header information. The slice layer provides decoding and reconstruction independence by disabling all forms of prediction, overlap and loop-filtering across slice-boundaries. This permits a slice coded in intra-mode to be reconstructed error-free, irrespective of errors in other regions of the picture.

Abstract translation: 视频编码器/解码器利用提供独立可解码的部分图像单元的双向串行语法，其可以是包含一个或多个连续的宏块行（称为切片）的单元的形式。 该切片层提供了弹性和压缩效率的灵活组合。 切片层对有效的寻址机制（例如，指定切片层的开始宏块行的语法元素）进行编码，以及有选择地重传图像头信息的机制。 切片层通过禁用跨片段的所有形式的预测，重叠和循环滤波来提供解码和重建独立性。 这允许在帧内编码的片段无错重构，而与图像的其他区域中的错误无关。