公开(公告)号：US08761243B2

公开(公告)日：2014-06-24

申请号：US12562583

申请日：2009-09-18

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：US08369638B2

公开(公告)日：2013-02-05

申请号：US12165474

申请日：2008-06-30

Applicant: Shankar Regunathan ,  Sridhar Srinivasan ,  Shijun Sun ,  Gary J. Sullivan ,  Chengjie Tu

Inventor： Shankar Regunathan ,  Sridhar Srinivasan ,  Shijun Sun ,  Gary J. Sullivan ,  Chengjie Tu

IPC: G06K9/36

CPC classification number: H04N19/00909 ,  H04N19/122 ,  H04N19/60 ,  H04N19/86

Abstract: In certain embodiments, to eliminate DC leakage into surrounding AC values, scaling stage within a photo overlap transform operator is modified such that the off-diagonal elements of the associated scaling matrix have the values of 0. In certain embodiments, the on-diagonal scaling matrix are given the values (0.5, 2). In some embodiments, the scaling is performed using a combination of reversible modulo arithmetic and lifting steps. In yet other embodiments, amount of DC leakage is estimated at the encoder, and preprocessing occurs to mitigate amount of leakage, with the bitstream signaling that preprocessing has occurred. A decoder may then read the signal and use the information to mitigate DC leakage.

Abstract translation: 在某些实施例中，为了将DC泄漏消除到周围的AC值中，修改照片重叠变换算子内的缩放阶段，使得相关联的缩放矩阵的非对角元素具有值0.在某些实施例中， 矩阵给出值（0.5,2）。 在一些实施例中，使用可逆模运算和提升步骤的组合来执行缩放。 在其他实施例中，在编码器处估计DC泄漏量，并且发生预处理以减轻泄漏量，同时比特流指示已经发生预处理。 然后，解码器可以读取信号并使用该信息来减轻DC泄漏。

公开(公告)号：US20130010861A1

公开(公告)日：2013-01-10

申请号：US13614453

申请日：2012-09-13

Applicant: Chih-Lung Lin ,  Minghui Xia ,  Pohsiang Hsu ,  Shankar Regunathan ,  Thomas W. Holcomb

Inventor： Chih-Lung Lin ,  Minghui Xia ,  Pohsiang Hsu ,  Shankar Regunathan ,  Thomas W. Holcomb

IPC: H04N7/32 ,  H04N7/26

CPC classification number: H04N19/89 ,  H04N19/103 ,  H04N19/124 ,  H04N19/166 ,  H04N19/172 ,  H04N19/188 ,  H04N19/46 ,  H04N19/573 ,  H04N19/61 ,  H04N19/91

Abstract: Various new and non-obvious apparatus and methods for using frame caching to improve packet loss recovery are disclosed. One of the disclosed embodiments is a method for using periodical and synchronized frame caching within an encoder and its corresponding decoder. When the decoder discovers packet loss, it informs the encoder which then generates a frame based on one of the shared frames stored at both the encoder and the decoder. When the decoder receives this generated frame it can decode it using its locally cached frame.

Abstract translation: 公开了使用帧缓存来改善丢包恢复的各种新的和不明显的装置和方法。 所公开的实施例之一是用于在编码器及其对应的解码器内使用周期性和同步帧缓存的方法。 当解码器发现分组丢失时，它通知编码器，然后编码器基于存储在编码器和解码器的共享帧之一来生成帧。 当解码器接收到该生成的帧时，它可以使用其本地缓存的帧进行解码。

公开(公告)号：US08179974B2

公开(公告)日：2012-05-15

申请号：US12151069

申请日：2008-05-02

Applicant: Chengjie Tu ,  Shankar Regunathan ,  Shijun Sun ,  Chih-Lung Lin

Inventor： Chengjie Tu ,  Shankar Regunathan ,  Shijun Sun ,  Chih-Lung Lin

IPC: H04B1/66

CPC classification number: H04N19/174 ,  G06T9/005 ,  H04N19/129 ,  H04N19/13 ,  H04N19/132 ,  H04N19/136 ,  H04N19/15 ,  H04N19/152 ,  H04N19/162 ,  H04N19/172 ,  H04N19/176 ,  H04N19/40 ,  H04N19/44 ,  H04N19/46 ,  H04N19/61 ,  H04N19/91

Abstract: Techniques and tools for encoding and decoding a block of frequency coefficients are presented. An encoder selects a scan order from multiple available scan orders and then applies the selected scan order to a two-dimensional matrix of transform coefficients, grouping non-zero values of the frequency coefficients together in a one-dimensional string. The encoder entropy encodes the one-dimensional string of coefficient values according to a multi-level nested set representation. In decoding, a decoder entropy decodes the one-dimensional string of coefficient values from the multi-level nested set representation. The decoder selects the scan order from among multiple available scan orders and then reorders the coefficients back into a two-dimensional matrix using the selected scan order.

Abstract translation: 提出了用于编码和解码频率系数块的技术和工具。 编码器从多个可用扫描顺序中选择扫描顺序，然后将所选择的扫描顺序应用于变换系数的二维矩阵，将频率系数的非零值在一维串中分组。 编码器根据多级嵌套集合表示对一维系列值串进行编码。 在解码中，解码器熵从多级嵌套集合表示解码系数值的一维串。 解码器从多个可用扫描顺序中选择扫描顺序，然后使用所选择的扫描顺序将系数重新排序成二维矩阵。

公开(公告)号：US08107531B2

公开(公告)日：2012-01-31

申请号：US10987521

申请日：2004-11-12

Applicant: Shankar Regunathan ,  Chih-Lung Lin ,  Thomas W. Holcomb ,  Jie Liang ,  Ming-Chieh Lee ,  Pohsiang Hsu

Inventor： Shankar Regunathan ,  Chih-Lung Lin ,  Thomas W. Holcomb ,  Jie Liang ,  Ming-Chieh Lee ,  Pohsiang Hsu

IPC: H04N7/12

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/124 ,  H04N19/13 ,  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

Abstract: A video codec efficiently signals that a frame is identical to its reference frame, such that separate coding of its picture content is skipped. Information that a frame is skipped is represented jointly in a coding table of a frame coding type element for bit rate efficiency in signaling. Further, the video codec signals the picture type (e.g., progressive or interlaced) of skipped frames, which permits different repeat padding methods to be applied according to the picture type.

Abstract translation: 视频编解码器有效地发信号通知帧与其参考帧相同，从而跳过其图像内容的单独编码。 帧跳过的信息在信令中的比特率效率的帧编码型元件的编码表中联合表示。 此外，视频编解码器针对跳过的帧的图像类型（例如，逐行或隔行扫描）进行信号，这允许根据图像类型应用不同的重复填充方法。

公开(公告)号：US08009739B2

公开(公告)日：2011-08-30

申请号：US10933907

申请日：2004-09-02

Applicant: Thomas W. Holcomb ,  Sridhar Srinivasan ,  Shankar Regunathan

Inventor： Thomas W. Holcomb ,  Sridhar Srinivasan ,  Shankar Regunathan

IPC: H04N7/12 ,  H04N11/02

CPC classification number: H04N19/16 ,  H04N19/137 ,  H04N19/196 ,  H04N19/46 ,  H04N19/51 ,  H04N19/61 ,  H04N19/70

Abstract: Techniques and tools for intensity compensation for interlaced forward-predicted fields are described. For example, a video decoder receives and decodes a variable length code that indicates which of two reference fields for an interlaced forward-predicted field use intensity compensation (e.g., both, only the first, or only the second). The decoder performs intensity compensation on each of the two reference fields that uses intensity compensation. A video encoder performs corresponding intensity estimation/compensation and signaling.

Abstract translation: 描述了用于交错前向预测场的强度补偿的技术和工具。 例如，视频解码器接收并解码可变长度码，该可变长度码指示用于隔行的前向预测场使用强度补偿（例如，两者，仅第一个，或仅第二个）的两个参考场中的哪一个。 解码器对使用强度补偿的两个参考场中的每一个进行强度补偿。 视频编码器执行相应的强度估计/补偿和信令。

公开(公告)号：US07924921B2

公开(公告)日：2011-04-12

申请号：US10989845

申请日：2004-11-15

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

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

IPC: H04N11/04 ,  H04N7/48 ,  H04N7/50 ,  H04N11/24

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：US07839930B2

公开(公告)日：2010-11-23

申请号：US10882739

申请日：2004-06-30

Applicant: Thomas W. Holcomb ,  Regis J. Crinon ,  Timothy E. Onders ,  Sridhar Srinivasan ,  Shankar Regunathan

Inventor： Thomas W. Holcomb ,  Regis J. Crinon ,  Timothy E. Onders ,  Sridhar Srinivasan ,  Shankar Regunathan

IPC: H04N7/32 ,  H04N3/10

CPC classification number: H04N21/8455 ,  H04N21/23424 ,  H04N21/44016

Abstract: Techniques and tools for coding/decoding of digital video, and in particular, for determining, signaling and detecting entry points in video streams are described. Techniques and tools described herein are used to embed entry point indicator information in the bitstream that receivers, editing systems, insertion systems, and other systems can use to detect valid entry points in compressed video.

Abstract translation: 描述了用于数字视频的编码/解码的技术和工具，特别是用于确定，信令和检测视频流中的入口点的技术和工具。 这里描述的技术和工具用于将入口点指示符信息嵌入比特流中，接收器，编辑系统，插入系统和其他系统可以用来检测压缩视频中的有效入口点。

公开(公告)号：US20090297054A1

公开(公告)日：2009-12-03

申请号：US12165474

申请日：2008-06-30

Applicant: Shankar Regunathan ,  Sridhar Srinivasan ,  Shijun Sun ,  Gary J. Sullivan ,  Chengjie Tu

Inventor： Shankar Regunathan ,  Sridhar Srinivasan ,  Shijun Sun ,  Gary J. Sullivan ,  Chengjie Tu

IPC: G06K9/36

CPC classification number: H04N19/00909 ,  H04N19/122 ,  H04N19/60 ,  H04N19/86

Abstract: In certain embodiments, to eliminate DC leakage into surrounding AC values, scaling stage within a photo overlap transform operator is modified such that the off-diagonal elements of the associated scaling matrix have the values of 0. In certain embodiments, the on-diagonal scaling matrix are given the values (0.5, 2). In some embodiments, the scaling is performed using a combination of reversible modulo arithmetic and lifting steps. In yet other embodiments, amount of DC leakage is estimated at the encoder, and preprocessing occurs to mitigate amount of leakage, with the bitstream signaling that preprocessing has occurred. A decoder may then read the signal and use the information to mitigate DC leakage.

Abstract translation: 在某些实施例中，为了将DC泄漏消除到周围的AC值中，修改照片重叠变换算子内的缩放阶段，使得相关联的缩放矩阵的非对角元素具有值0.在某些实施例中， 矩阵给出值（0.5,2）。 在一些实施例中，使用可逆模运算和提升步骤的组合来执行缩放。 在其他实施例中，在编码器处估计DC泄漏量，并且发生预处理以减轻泄漏量，同时比特流指示已经发生预处理。 然后，解码器可以读取信号并使用该信息来减轻DC泄漏。

公开(公告)号：US20090273706A1

公开(公告)日：2009-11-05

申请号：US12151069

申请日：2008-05-02

Applicant: Chengjie Tu ,  Shankar Regunathan ,  Shijun Sun ,  Chih-Lung Lin

Inventor： Chengjie Tu ,  Shankar Regunathan ,  Shijun Sun ,  Chih-Lung Lin

IPC: H04N1/415

CPC classification number: H04N19/174 ,  G06T9/005 ,  H04N19/129 ,  H04N19/13 ,  H04N19/132 ,  H04N19/136 ,  H04N19/15 ,  H04N19/152 ,  H04N19/162 ,  H04N19/172 ,  H04N19/176 ,  H04N19/40 ,  H04N19/44 ,  H04N19/46 ,  H04N19/61 ,  H04N19/91

Abstract: Techniques and tools for encoding and decoding a block of frequency coefficients are presented. An encoder selects a scan order from multiple available scan orders and then applies the selected scan order to a two-dimensional matrix of transform coefficients, grouping non-zero values of the frequency coefficients together in a one-dimensional string. The encoder entropy encodes the one-dimensional string of coefficient values according to a multi-level nested set representation. In decoding, a decoder entropy decodes the one-dimensional string of coefficient values from the multi-level nested set representation. The decoder selects the scan order from among multiple available scan orders and then reorders the coefficients back into a two-dimensional matrix using the selected scan order.

Abstract translation: 提出了用于编码和解码频率系数块的技术和工具。 编码器从多个可用扫描顺序中选择扫描顺序，然后将所选择的扫描顺序应用于变换系数的二维矩阵，将频率系数的非零值在一维串中分组。 编码器根据多级嵌套集合表示对一维系列值串进行编码。 在解码中，解码器熵从多级嵌套集合表示解码系数值的一维串。 解码器从多个可用扫描顺序中选择扫描顺序，然后使用所选择的扫描顺序将系数重新排序成二维矩阵。