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公开(公告)号：US09363536B2
公开(公告)日：2016-06-07
申请号：US13584671
申请日：2012-08-13
IPC分类号： H04N7/12 , H04N19/93 , H04N19/70 , H04N19/46 , H04N19/51 , H04N19/61 , H04N19/91 , H04N19/186 , H04N19/17 , H04N19/53 , H04N19/517 , H04N19/85
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.
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2.发明授权公开(公告)号：US09239732B2
公开(公告)日：2016-01-19
申请号：US13028552
申请日：2011-02-16
申请人： Xiaoxuan Zhao , Sridhar Srinivasan , Xiang Zhou , Fengbin Jiang
发明人： Xiaoxuan Zhao , Sridhar Srinivasan , Xiang Zhou , Fengbin Jiang
CPC分类号： G06F9/4843 , G06F8/4443 , G06F9/45504 , G06F9/45525
摘要： One or more techniques and/or systems are disclosed for improving asynchronous programming execution at runtime. Asynchronous programming code can comprise more than one level of hierarchy, such as in an execution plan. Respective aggregation operations in a portion of the asynchronous programming code are unrolled, to create a single level iterative execution, by combining elements of the multi-level iterative execution of the asynchronous programming code. In this way, the aggregation operations are concatenated to local logic code for the aggregation operations. Thread context switching in the unrolled portion of asynchronous programming code is performed merely at an asynchronous operation, thereby mitigating unnecessary switches. Exceptions thrown during programming code can be propagated up to a top of a virtual callstack for the execution.
摘要翻译： 公开了一种或多种技术和/或系统，用于在运行时改善异步编程执行。 异步编程代码可以包括多个层次结构，例如在执行计划中。 通过组合异步编程代码的多级迭代执行的元素来展开异步编程代码的一部分中的各个聚合操作，以创建单级迭代执行。 以这种方式，聚合操作被连接到用于聚合操作的本地逻辑代码。 异步编程代码的展开部分中的线程上下文切换仅在异步操作下执行，从而减轻不必要的开关。 在编程代码中抛出的异常可以传播到虚拟调用堆栈的顶部，以执行。
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3.发明授权公开(公告)号：US08953673B2
公开(公告)日：2015-02-10
申请号：US12074030
申请日：2008-02-29
IPC分类号： H04N7/12 , H04N19/186 , H04N19/36 , H04N19/59 , H04N19/33
CPC分类号： H04N19/00315 , H04N19/186 , H04N19/33 , H04N19/36 , H04N19/59
摘要： Techniques and tools are described for scalable video encoding and decoding. In some embodiments, an input frame is downsampled in terms of sample depth and chroma sampling rate, encoded, and output from the encoder as a base layer bitstream. The base layer bitstream is also reconstructed and upsampled to produce a reconstructed bitstream which is subtracted from the original input frame to produce a residual layer. The residual layer is split and encoded as a sample depth residual layer bitstream and a chroma high-pass residual layer bitstream. To recover the encoded input frame, a decoder receives one or more of these bitstreams, decodes them, and combines them to form a reconstructed image. The use of separate codecs is allowed for the base layer and the enhancement layers, without inter-layer dependencies.
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4.发明授权Computational complexity and precision control in transform-based digital media codec 有权基于变换的数字媒体编解码器的计算复杂度和精度控制公开(公告)号：US08942289B2
公开(公告)日：2015-01-27
申请号：US11772076
申请日：2007-06-29
IPC分类号： H04N11/02 , H04N21/6547 , H04N19/122 , H04N19/60 , H04N19/156 , H04N19/46
CPC分类号： H04N21/6547 , H04N19/122 , H04N19/156 , H04N19/46 , H04N19/60
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US08917768B2
公开(公告)日：2014-12-23
申请号：US12275782
申请日：2008-11-21
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , H04N19/51 , H04N19/61 , G06K9/36 , G06K9/46 , H04N19/583 , H04N19/91
CPC分类号： H04N19/137 , G06K9/36 , G06K9/46 , H04N7/52 , H04N19/132 , H04N19/139 , H04N19/176 , H04N19/51 , H04N19/513 , H04N19/61 , H04N19/63 , H04N19/91
摘要： Techniques and tools for encoding and decoding motion vector information for video images are described. For example, a video encoder yields an extended motion vector code by jointly coding, for a set of pixels, a switch code, motion vector information, and a terminal symbol indicating whether subsequent data is encoded for the set of pixels. In another aspect, an encoder/decoder selects motion vector predictors for macroblocks. In another aspect, a video encoder/decoder uses hybrid motion vector prediction. In another aspect, a video encoder/decoder signals a motion vector mode for a predicted image. In another aspect, a video decoder decodes a set of pixels by receiving an extended motion vector code, which reflects joint encoding of motion information together with intra/inter-coding information and a terminal symbol. The decoder determines whether subsequent data exists for the set of pixels based on e.g., the terminal symbol.
摘要翻译： 描述用于编码和解码用于视频图像的运动矢量信息的技术和工具。 例如，视频编码器通过针对一组像素共同编码一个开关码，运动矢量信息和指示后续数据是否被编码用于像素集合的终端符号来产生扩展运动矢量码。 在另一方面，编码器/解码器为宏块选择运动矢量预测器。 在另一方面，视频编码器/解码器使用混合运动矢量预测。 在另一方面，视频编码器/解码器针对预测图像发送运动矢量模式。 在另一方面，视频解码器通过接收扩展运动矢量码来解码一组像素，该扩展运动矢量码反映运动信息的联合编码以及帧内/帧间编码信息和终端符号。 解码器基于例如终端符号确定对于像素集合是否存在后续数据。
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公开(公告)号：US08880571B2
公开(公告)日：2014-11-04
申请号：US11418627
申请日：2006-05-05
申请人： Sridhar Srinivasan , Zhi Zhou
发明人： Sridhar Srinivasan , Zhi Zhou
CPC分类号： H03M7/24 , H04N1/407 , H04N1/6027
摘要： One or more continuous mappings are defined at a digital media encoder to convert input digital media data in a first high dynamic range format to a second format with a smaller dynamic range than the first format. The encoder converts the input digital media data to the second format with the smaller dynamic range using the continuous mapping and one or more conversion parameters relating to the continuous mapping. The encoder encodes the converted digital media data in a bitstream along with the conversion parameter(s). The conversion parameter(s) enable a digital media decoder to convert the converted digital media data back to the first high dynamic range format from the second format with the smaller dynamic range. Techniques for converting different input formats with different dynamic ranges are described.
摘要翻译： 在数字媒体编码器处定义一个或多个连续映射，以将第一高动态范围格式的输入数字媒体数据转换成具有比第一格式更小的动态范围的第二格式。 编码器使用连续映射和与连续映射相关的一个或多个转换参数将输入数字媒体数据转换为具有较小动态范围的第二格式。 编码器将转换的数字媒体数据与转换参数一起编码在比特流中。 转换参数使得数字媒体解码器能够将转换的数字媒体数据从具有较小动态范围的第二格式转换回第一高动态范围格式。 描述用于转换具有不同动态范围的不同输入格式的技术。
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公开(公告)号：US08687709B2
公开(公告)日：2014-04-01
申请号：US10934116
申请日：2004-09-04
CPC分类号： H04N19/93 , H04N19/102 , H04N19/109 , H04N19/11 , H04N19/112 , H04N19/117 , H04N19/129 , H04N19/13 , H04N19/137 , H04N19/146 , H04N19/147 , H04N19/159 , H04N19/16 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/184 , H04N19/186 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/51 , H04N19/52 , H04N19/523 , H04N19/593 , H04N19/61 , H04N19/63 , H04N19/70 , H04N19/82 , H04N19/86
摘要： An encoder/decoder obtains pixel data from one or more field lines associated with a first block in an interlaced frame coded picture comprising plural macroblocks each having an equal number of top and bottom field lines. The encoder/decoder obtains pixel data from one or more field lines associated with a second block and performs in-loop deblocking filtering across a boundary. The in-loop deblocking filtering comprises filter operations performed on pixel data from field lines of same polarity only. In another aspect, an encoder/decoder obtains transform size information for plural blocks of macroblock, obtains field/frame type information for the macroblock and selects one or more boundaries for in-loop deblocking based at least in part on the transform size information and the field/frame type information. In-loop deblocking can be performed on horizontal block boundaries prior to vertical block boundaries.
摘要翻译： 编码器/解码器从隔行扫描帧编码图像中的与第一块相关联的一个或多个场线获得像素数据，该帧包括多个具有相等数目的顶场和底场的行的宏块。 编码器/解码器从与第二块相关联的一个或多个场线获取像素数据，并且跨越边界执行循环去块滤波。 循环去块滤波包括对相同极性的场线的像素数据执行的滤波操作。 在另一方面，编码器/解码器获得多个宏块块的变换大小信息，获得宏块的场/帧类型信息，并至少部分基于变换大小信息选择一个或多个边界进行循环去块， 字段/帧类型信息。 可以在垂直块边界之前的水平块边界上执行环路解块。
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公开(公告)号：US08515194B2
公开(公告)日：2013-08-20
申请号：US11772019
申请日：2007-06-29
CPC分类号： G06T9/00 , H04N19/132 , H04N19/17 , H04N19/176 , H04N19/184 , H04N19/46 , H04N19/60 , H04N19/70
摘要： 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.
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公开(公告)号：US08428374B2
公开(公告)日：2013-04-23
申请号：US12495481
申请日：2009-06-30
申请人： Sridhar Srinivasan , Pohsiang Hsu
发明人： Sridhar Srinivasan , Pohsiang Hsu
CPC分类号： H04N19/103 , H04N19/105 , H04N19/129 , H04N19/132 , H04N19/146 , H04N19/147 , H04N19/172 , H04N19/176 , H04N19/196 , H04N19/46 , H04N19/50 , H04N19/507 , H04N19/51 , H04N19/513 , H04N19/52 , H04N19/523 , H04N19/527 , H04N19/587 , H04N19/61 , H04N19/70 , H04N19/82 , H04N19/86
摘要： Various techniques and tools for encoding and decoding (e.g., in a video encoder/decoder) binary information (e.g., skipped macroblock information) are described. In some embodiments, the binary information is arranged in a bit plane, and the bit plane is coded at the picture/frame layer. The encoder and decoder process the binary information and, in some embodiments, switch coding modes. For example, the encoder and decoder use normal, row-skip, column-skip, or differential modes, or other and/or additional modes. In some embodiments, the encoder and decoder define a skipped macroblock as a predicted macroblock whose motion is equal to its causally predicted motion and which has zero residual error. In some embodiments, the encoder and decoder use a raw coding mode to allow for low-latency applications.
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公开(公告)号：US08385428B2
公开(公告)日：2013-02-26
申请号：US11484457
申请日：2006-07-10
申请人： Chengjie Tu , Sridhar Srinivasan
发明人： Chengjie Tu , Sridhar Srinivasan
IPC分类号： H04N7/18
CPC分类号： H04N19/107 , G06T9/00 , H04N7/24 , H04N19/174 , H04N19/18 , H04N19/186 , H04N19/60 , H04N19/66
摘要： A system, a method and computer-readable media for encoding image data into a compressed bitstream. A mode selection component is configured to select a mode of operation for use in encoding image data. A spatial mode encoder is utilized when the mode selection component selects a spatial mode of operation. The spatial mode encoder is configured to encode the image data into packets by organizing the image data in accordance with a spatial partitioning. A frequency mode encoder is utilized when the mode selection component selects a frequency mode of operation. The frequency mode encoder is configured to encode the image data into packets by organizing the image data in accordance with a frequency ordering.
摘要翻译： 一种用于将图像数据编码为压缩比特流的系统，方法和计算机可读介质。 模式选择部件被配置为选择用于编码图像数据的操作模式。 当模式选择组件选择空间操作模式时，利用空间模式编码器。 空间模式编码器被配置为根据空间分区通过组织图像数据将图像数据编码成分组。 当模式选择组件选择频率工作模式时，利用频率模式编码器。 频率模式编码器被配置为根据频率排序来组织图像数据将图像数据编码成分组。
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