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1. 发明授权

US09049451B2 Region-based processing of predicted pixels 有权
标题翻译：预测像素的基于区域的处理
公开(公告)号：US09049451B2
公开(公告)日：2015-06-02
申请号：US13562229
申请日：2012-07-30
申请人： Thomas Pun , Paul Chang , Hsi-Jung Wu
发明人： Thomas Pun , Paul Chang , Hsi-Jung Wu
IPC分类号： H04N7/32 , H04N19/436 , H04N19/176 , H04N19/46 , H04N19/134 , H04N19/102 , H04N19/61 , H04N19/157 , H04N19/44
CPC分类号： H04N19/105 , H04N19/102 , H04N19/134 , H04N19/157 , H04N19/176 , H04N19/182 , H04N19/436 , H04N19/44 , H04N19/46 , H04N19/52 , H04N19/61
摘要： A method for decoding a compressed video data sequence containing one or more coded pixel blocks. The compressed video sequence is buffered. Prediction information for each of the coded pixel blocks is reviewed. One or more groups of coded pixel blocks are formed based on the reviewed prediction information such that the coded pixel blocks within a given group have similar prediction dependencies and/or at least do not depend on a reconstructed pixel within a group of received pixel blocks to enable parallel decoding. The formed groups are scheduled for processing and subsequently decoded to produce a decoded video data sequence.
摘要翻译：一种用于解码包含一个或多个编码像素块的压缩视频数据序列的方法。压缩视频序列被缓冲。回顾每个编码像素块的预测信息。基于所检查的预测信息形成一组或多组编码像素块，使得给定组内的编码像素块具有相似的预测依赖性和/或至少不依赖于所接收的像素块组内的重建像素启用并行解码。形成的组被调度用于处理并随后被解码以产生解码的视频数据序列。

2. 发明授权

US08780997B2 Regulation of decode-side processing based on perceptual masking 有权
标题翻译：基于感知掩蔽的解码侧处理调节
公开(公告)号：US08780997B2
公开(公告)日：2014-07-15
申请号：US11462562
申请日：2006-08-04
申请人： Hsi-Jung Wu , Thomas Pun
发明人： Hsi-Jung Wu , Thomas Pun
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , G06K9/36 , G06K9/46
CPC分类号： H04N19/577 , H04N19/105 , H04N19/117 , H04N19/127 , H04N19/132 , H04N19/157 , H04N19/159 , H04N19/17 , H04N19/172 , H04N19/18 , H04N19/44 , H04N19/523 , H04N19/58 , H04N19/61 , H04N19/82
摘要： This invention is directed to a method for decoding coded video data in which decoder performance is regulated based on perceptual masking. The method includes, upon receipt of coded video data, applying the coded video data to a multi-stage decoding process; computing perceptual masking measures for the coded video data; and switching a stage of the decoding process to a lower performance level based on the computed perceptual masking measures. The method may be applied to non-reference frames and reference frames with low numbers of dependent frames. The method provides scalability among decoders to allow for various decoder and/or coded data complexity.
摘要翻译：本发明涉及一种解码编码视频数据的方法，其中解码器性能基于感知掩蔽进行调节。该方法包括：在接收到编码的视频数据时，将编码的视频数据应用于多级解码过程; 计算编码视频数据的感知掩蔽度量; 以及基于所计算的感知掩蔽度量将所述解码处理的阶段切换到较低的性能级别。该方法可以应用于具有低数目的从属帧的非参考帧和参考帧。该方法在解码器之间提供可扩展性，以允许各种解码器和/或编码数据复杂度。

3. 发明授权

US08296348B2 Encoding and decoding data arrays 有权
标题翻译：数据阵列的编码和解码
公开(公告)号：US08296348B2
公开(公告)日：2012-10-23
申请号：US12037061
申请日：2008-02-25
申请人： Roger Kumar , Maynard Handley , Thomas Pun , Xiaochun Nie , Hsi-Jung Wu
发明人： Roger Kumar , Maynard Handley , Thomas Pun , Xiaochun Nie , Hsi-Jung Wu
IPC分类号： G06F17/14
CPC分类号： G06F17/147
摘要： Some embodiments of the invention provide a method of performing a Discrete Cosine Transform (“DCT”) encoding or decoding coefficients of a data array by (1) multiplying the coefficients by a scalar value before the encoding or decoding, and then (2) dividing the encoded or decoded coefficients by the scalar value. When used in conjunction with fixed-point arithmetic, this method increases the precision of the encoded and decoded results. In addition, some embodiments provide a method of performing a two-dimensional (2D) Inverse Discrete Cosine Transform (“iDCT”). This method splits a pre-multiplication operation of the iDCT into two or more separate stages. When used in conjunction with fixed-point arithmetic, this splitting increases the precision of the decoded results of the iDCT.
摘要翻译：本发明的一些实施例提供了一种通过以下步骤对数据阵列的系数进行编码或解码的离散余弦变换（DCT）的方法：（1）在编码或解码之前将系数乘以标量值，然后（2）或经解码的系数乘以标量值。当与定点算术结合使用时，该方法提高了编码和解码结果的精度。此外，一些实施例提供了执行二维（2D）逆离散余弦变换（iDCT）的方法。该方法将iDCT的预乘法运算分为两个或多个独立的阶段。当与定点算术结合使用时，该分割增加了iDCT的解码结果的精度。

4. 发明申请

US20110243218A1 METHOD OF IMPLEMENTING IMPROVED RATE CONTROL FOR A MULTIMEDIA COMPRESSION AND ENCODING SYSTEM 有权
标题翻译：实现多媒体压缩和编码系统改进速率控制的方法
公开(公告)号：US20110243218A1
公开(公告)日：2011-10-06
申请号：US13078922
申请日：2011-04-01
申请人： Xiaochun Nie , Thomas Pun , Hsi-Jung Wu
发明人： Xiaochun Nie , Thomas Pun , Hsi-Jung Wu
IPC分类号： H04N7/26
CPC分类号： H04N21/23406 , H04N19/115 , H04N19/152 , H04N19/159 , H04N19/162 , H04N19/172 , H04N19/61 , H04N21/2401 , H04N21/44004
摘要： The rate controller in a digital video encoding system is responsible for allocating a bit budget for video frames to be encoded. The rate controller considers many different factors when determining the frame bit budget. One of the factors considered is the complexity of the frames being compressed. Occasionally there will be a very complex frame that is not representative of the overall video frame sequence. Such a rare complex frame may cause a disproportionate affect on the bit budget allocation. The system of the present invention limits the amount that a very complex frame can change the bit budget allocation. The rate controller of the present invention also includes a relaxation factor. The relaxation factor allows a user to determine if the rate controller should strictly allocate its bit budget or relax its standards such that the rate controller may not be so conservative when allocating bits to frames.
摘要翻译：数字视频编码系统中的速率控制器负责为要编码的视频帧分配比特预算。速率控制器在确定帧位预算时会考虑许多不同的因素。考虑的因素之一是被压缩的帧的复杂性。偶尔会有一个非常复杂的帧，不能代表整个视频帧序列。这种罕见的复杂框架可能会对比特预算分配造成不成比例的影响。本发明的系统限制了非常复杂的帧可以改变比特预算分配的量。本发明的速率控制器还包括松弛因子。松弛因子允许用户确定速率控制器是否应严格分配其位预算或放宽其标准，使得速率控制器在将位分配给帧时可能不那么保守。

5. 发明授权

US08031777B2 Multipass video encoding and rate control using subsampling of frames 有权
标题翻译：多帧视频编码和速率控制采用子采样帧
公开(公告)号：US08031777B2
公开(公告)日：2011-10-04
申请号：US11384379
申请日：2006-03-21
申请人： Barin Haskell , Adriana Dumitras , Hsi-Jung Wu , Xin Tong , Thomas Pun
发明人： Barin Haskell , Adriana Dumitras , Hsi-Jung Wu , Xin Tong , Thomas Pun
IPC分类号： H04B1/66
CPC分类号： H04N19/587 , H04N19/115 , H04N19/132 , H04N19/15 , H04N19/194 , H04N19/196
摘要： An encoder includes an encoder engine, a storage device and a controller to implement an iterative coding process. The encoder engine compresses a selected portion of a data sequence. The storage device stores the compressed portion of the data sequence after each iteration. The controller selects the portion of the data sequence to compress for each iteration. The controller gathers statistics from the compressed portion of the data sequence. The gathered statistics include statistics generated by the selected frames and statistics extrapolated from the selected frames for the non-selected frames. The controller adjusts coding parameters of the encoder engine on each iteration until the gathered statistics meet a specified performance requirement.
摘要翻译：编码器包括编码器引擎，存储装置和控制器，以实现迭代编码处理。编码器引擎压缩数据序列的选定部分。存储装置在每次迭代之后存储数据序列的压缩部分。控制器为每次迭代选择数据序列的部分进行压缩。控制器从数据序列的压缩部分收集统计信息。所收集的统计信息包括由所选择的帧生成的统计信息和对于未选择的帧从所选择的帧中推断的统计信息。控制器在每次迭代中调整编码器引擎的编码参数，直到收集到的统计信息达到规定的性能要求。

6. 发明授权

US08005139B2 Encoding with visual masking 有权
标题翻译：用视觉遮蔽编码
公开(公告)号：US08005139B2
公开(公告)日：2011-08-23
申请号：US11118604
申请日：2005-04-28
申请人： Hsi Jung Wu , Thomas Pun
发明人： Hsi Jung Wu , Thomas Pun
IPC分类号： H04N7/12
CPC分类号： H04N19/192 , H04N19/124 , H04N19/137 , H04N19/14 , H04N19/15 , H04N19/172 , H04N19/176 , H04N19/61
摘要： Some embodiments of the invention encode a sequence of video images based on “visual masking” attributes of the video images and/or portions of the video images. Visual masking of an image or a portion of the image is an indication of how much coding artifacts can be tolerated in the image or image portion. To express the visual masking attribute of an image or an image portion, some embodiments compute a visual masking strength that quantifies the brightness energy of the image or the image portion. In some embodiments, the brightness energy is measured as a function of the average luma or pixel energy of the image or image portion.
摘要翻译：本发明的一些实施例基于视频图像和/或视频图像的部分的“视觉掩蔽”属性来编码视频图像序列。图像或图像的一部分的视觉遮蔽是图像或图像部分中可以容许多少编码伪像的指示。为了表达图像或图像部分的视觉掩蔽属性，一些实施例计算量化图像或图像部分的亮度能量的视觉掩蔽强度。在一些实施例中，根据图像或图像部分的平均亮度或像素能量来测量亮度能量。

7. 发明申请

US20110188575A1 ENCODING VIDEO 有权
标题翻译：编辑视频
公开(公告)号：US20110188575A1
公开(公告)日：2011-08-04
申请号：US13085461
申请日：2011-04-12
申请人： Thomas Pun , Roger Kumar , Xiaochun Nie , Hsi-Jung Wu
发明人： Thomas Pun , Roger Kumar , Xiaochun Nie , Hsi-Jung Wu
IPC分类号： H04N7/26
CPC分类号： H04N19/14 , H04N19/107 , H04N19/122 , H04N19/176
摘要： Some embodiments of the invention provide a method for encoding a video signal that is formed by a series of successive images. Each image includes several sections, and each section has a set of image values. To encode a particular section of a particular image, the method initially partitions the particular section into several sub-sections. For each of at least two particular sub-sections, the method then computes a statistical parameter regarding the image values of the particular sub-section. The method compares the computed statistical parameters, and based on the comparison, selects an encoding technique from a set of encoding techniques to encode the particular section. In some embodiments, the set of encoding schemes includes a first scheme that encodes the selected section without reference to any other section of any other image, and a second scheme that encodes the selected section by reference to at least one other section.
摘要翻译：本发明的一些实施例提供了一种用于编码由一系列连续图像形成的视频信号的方法。每个图像包括几个部分，每个部分都有一组图像值。为了对特定图像的特定部分进行编码，该方法最初将特定部分分成几个子部分。对于至少两个特定子部分中的每一个，该方法然后计算关于特定子部分的图像值的统计参数。该方法比较所计算的统计参数，并且基于该比较，从一组编码技术中选择编码技术以对特定部分进行编码。在一些实施例中，所述编码方案组包括编码所选择的部分而不参考任何其它图像的任何其它部分的第一方案，以及通过参考至少一个其他部分对所选部分进行编码的第二方案。

8. 发明申请

US20110007798A1 METHOD FOR IMPLEMENTING A QUANTIZER IN A MULTIMEDIA COMPRESSION AND ENCODING SYSTEM 审中-公开
标题翻译：在多媒体压缩和编码系统中实现量测器的方法
公开(公告)号：US20110007798A1
公开(公告)日：2011-01-13
申请号：US12820106
申请日：2010-06-21
申请人： Thomas Pun , Roger Kumar , Xiaochun Nie , Hsi-Jung Wu
发明人： Thomas Pun , Roger Kumar , Xiaochun Nie , Hsi-Jung Wu
IPC分类号： H04N7/26
CPC分类号： H04N19/126 , H04N19/146 , H04N19/149 , H04N19/176 , H04N19/196 , H04N19/197 , H04N19/61 , H04N19/625
摘要： Method For Implementing A Quantizer In A Multimedia Compression And Encoding System is disclosed. In the Quantizer system of the present invention, several new quantization ideas are disclosed. In one embodiment, adjacent macroblocks are grouped together into macroblock groups. The macroblock groups are then assigned a common quantizer value. The common quantizer value may be selected based upon how the macroblocks are encoded, the type of macroblocks within the macroblock group (intra-blocks or inter-blocks), the history of the motion vectors associated with the macroblocks in the macroblock group, the residuals of the macroblocks in the macroblock group, and the energy of the macroblocks in the macroblock group. The quantizer value may be adjusted in a manner that is dependent on the current quantizer value. Specifically, if the quantizer value is at the low end of the quantizer scale, then only small adjustments are made. If the quantizer value is at the high end then larger adjustments may be made to the quantizer. Finally, in one embodiment, the quantizer is implemented along with an inverse quantizer for efficient operation.
摘要翻译：公开了一种在多媒体压缩和编码系统中实现量化器的方法。在本发明的量化器系统中，公开了几种新的量化思想。在一个实施例中，相邻宏块被分组在一起成为宏块组。然后向宏块组分配一个公共量化器值。可以基于宏块如何编码，宏块组（块内或块内）中的宏块的类型，与宏块组中的宏块相关联的运动向量的历史来选择公共量化器值，残差的宏块组中的宏块的能量，以及宏块组中的宏块的能量。量化器值可以以取决于当前量化器值的方式进行调整。具体地，如果量化器值处于量化器标尺的低端，则仅进行小的调整。如果量化器值处于高端，则可以对量化器进行较大的调整。最后，在一个实施例中，量化器与用于有效操作的逆量化器一起被实现。

9. 发明授权

US07742525B1 Adaptive motion estimation 失效
标题翻译：自适应运动估计
公开(公告)号：US07742525B1
公开(公告)日：2010-06-22
申请号：US10427890
申请日：2003-04-30
申请人： Roger Kumar , Thomas Pun , Xiaochun Nie , Hsi-Jung Wu
发明人： Roger Kumar , Thomas Pun , Xiaochun Nie , Hsi-Jung Wu
IPC分类号： H04B1/66
CPC分类号： H04N19/533 , H04N19/61
摘要： A method for adaptively performing motion estimation. In some embodiments, the method initially performs a first motion estimation operation. It then determines whether the estimated error in the result of the first motion estimation is greater than a particular threshold. If not, the method uses the results of the first motion estimation operation. Otherwise, the method selects another motion estimation operation. The method continues in this manner until it performs a motion estimation operation that results in an acceptable estimated error, or until it tries all the motion estimation operations at its disposal. When the method cannot identify a motion estimation operation that produces results with an acceptable estimated error, the method selects the result of the motion estimation operation that produced the best results.
摘要翻译：一种自适应执行运动估计的方法。在一些实施例中，该方法最初执行第一运动估计操作。然后，确定第一运动估计的结果中的估计误差是否大于特定阈值。如果不是，则该方法使用第一运动估计操作的结果。否则，该方法选择另一运动估计操作。该方法以这种方式继续，直到其执行导致可接受的估计误差的运动估计操作，或者直到它尝试其所有的所有运动估计操作。当该方法无法识别产生具有可接受的估计误差的结果的运动估计运算时，该方法选择产生最佳结果的运动估计运算的结果。

10. 发明申请

US20090073005A1 COMPLEXITY-AWARE ENCODING 有权
标题翻译：复杂的编码
公开(公告)号：US20090073005A1
公开(公告)日：2009-03-19
申请号：US12256271
申请日：2008-10-22
申请人： Jim NORMILE , Thomas PUN , Xiaojin SHI , Xin TONG , Hsi-Jung WU
发明人： Jim NORMILE , Thomas PUN , Xiaojin SHI , Xin TONG , Hsi-Jung WU
IPC分类号： H03M7/00
CPC分类号： H04N19/154 , H04N19/156 , H04N19/164
摘要： Techniques for encoding data based at least in part upon an awareness of the decoding complexity of the encoded data and the ability of a target decoder to decode the encoded data are disclosed. In some embodiments, a set of data is encoded based at least in part upon a state of a target decoder to which the encoded set of data is to be provided. In some embodiments, a set of data is encoded based at least in part upon the states of multiple decoders to which the encoded set of data is to be provided.
摘要翻译：公开了至少部分地基于编码数据的解码复杂度的意识和目标解码器解码编码数据的能力对数据进行编码的技术。在一些实施例中，至少部分地基于要提供编码数据集合的目标解码器的状态对数据集进行编码。在一些实施例中，一组数据至少部分地基于要提供编码数据集的多个解码器的状态进行编码。

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