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1.发明授权Method and device for optimal bit allocation between different sources of information in digital video compression 失效用于数字视频压缩中不同信息源之间最佳位分配的方法和装置
公开(公告)号：US5778192A
公开(公告)日：1998-07-07
申请号：US548785
申请日：1995-10-26
CPC分类号： G06T9/008 , H04N19/115 , H04N19/147 , H04N19/172 , H04N19/176 , H04N19/19 , H04N19/192 , H04N19/503 , H04N19/51 , H04N19/61 , H04N19/146 , H04N19/20
摘要： The present invention provides a method (200, 400) and device (500) for, within a variable or fixed block size video compression scheme, providing optimal bit allocation among at least three critical types of data: segmentation, motion vectors and prediction error, or DFD. Since the amount of information represented by one bit for a particular type of data is not equivalent to the information represented by one bit for some other data type, this consideration is taken into account to efficiently encode the video sequence. Thus, a computationally efficient method is provided for optimally encoding a given frame of a video sequence wherein, for a given bit budget the proposed encoding scheme leads to the smallest possible distortion and vice versa, for a given distortion, the proposed encoding scheme leads to the smallest possible rate.
摘要翻译： 本发明提供了一种用于在可变或固定的块大小的视频压缩方案内提供至少三种关键类型的数据中的最佳比特分配的方法（200,400）和装置（500）：分段，运动矢量和预测误差， 或DFD。 由于用于特定数据类型的一位表示的信息量不等于其他数据类型的一位表示的信息，所以考虑到有效地对视频序列进行编码。 因此，提供了一种计算有效的方法，用于对视频序列的给定帧进行最佳编码，其中对于给定的比特预算，所提出的编码方案导致给定失真的最小可能失真，反之亦然，所提出的编码方案导致 最小的可能率。
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2.发明授权Method and device for concealment and containment of errors in a macroblock-based video codec 失效用于隐藏和容纳基于宏块的视频编解码器中的错误的方法和装置
公开(公告)号：US5724369A
公开(公告)日：1998-03-03
申请号：US548772
申请日：1995-10-26
IPC分类号： H04N19/895 , H04L1/00
CPC分类号： H04N19/507 , H04N19/51 , H04N19/895
摘要： The present invention provides a method (100, 200) and a device (300, 400, 600) for containing and concealing errors which occur in a transmitted video bitstream. Utilizing a plurality of predetermined scanning patterns, particular macroblocks are chosen per frame to have their intensity information encoded and transmitted. This approach provides an efficient method to limit the degradation to the visual quality of a video sequence decoded from a bitstream corrupted by an extended error burst. Concealment of areas within a video sequence that are affected by short error bursts and/or random errors is achieved by estimating the corresponding lost macroblock information from the remaining uncorrupted macroblocks. That is, for each lost macroblock a prediction of the intensity information is generated through the use of a motion vector from a neighboring uncorrupted macroblock.
摘要翻译： 本发明提供了一种用于包含和隐藏在发送的视频比特流中出现的错误的方法（100,200）和装置（300,400,600）。 利用多个预定的扫描模式，每帧选择特定的宏块以使其强度信息被编码和发送。 这种方法提供了一种有效的方法来将劣化限制为从由扩展错误突发所破坏的比特流解码的视频序列的视觉质量。 通过从剩余的未破坏的宏块中估计相应的丢失的宏块信息来实现视频序列内由短错误突发和/或随机错误影响的区域的隐藏。 也就是说，对于每个丢失的宏块，通过使用来自相邻未破坏的宏块的运动矢量来生成强度信息的预测。
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3.发明授权Method and a device for transmission of a variable bit-rate compressed video bitstream over constant and variable capacity networks 有权用于通过恒定和可变容量网络传输可变比特率压缩视频比特流的方法和装置公开(公告)号：US06529552B1
公开(公告)日：2003-03-04
申请号：US09504359
申请日：2000-02-15
申请人： Chun-Jen Tsai , Osama Alshaykh , Mark R. Banham
发明人： Chun-Jen Tsai , Osama Alshaykh , Mark R. Banham
IPC分类号： H04N718
CPC分类号： H04N19/587 , H04N19/103 , H04N19/124 , H04N19/132 , H04N19/146 , H04N19/154 , H04N19/162 , H04N19/164
摘要： A method and device for producing and delivering constant quality digital video bitstreams over channels of any bit-rate and variability are provided. The method and device may be applicable to any standardized video coding system, but preferably within the MPEG-4 standard. For constant capacity networks, the method and the device re-distribute the coded bits in a constant-quality variable bit-rate bitstream to construct a constant bit-rate bitstream. For variable capacity networks, the method and the device achieve constant quality as described by a metric that incorporate both spatial and temporal visual quality. The method and the device incorporate user, network, and channel parameters in controlling the bit-rate while encoding video material.
摘要翻译： 提供了一种用于在任何比特率和变异性的信道上产生和传送恒定质量数字视频比特流的方法和装置。 该方法和设备可以适用于任何标准化的视频编码系统，但优选地在MPEG-4标准内。 对于恒定容量网络，该方法和设备以恒定质量可变比特率比特流重新分配编码比特，以构建恒定比特率比特流。 对于可变容量网络，该方法和设备实现恒定质量，如同时包含空间和时间的视觉质量的度量描述的。 该方法和设备结合用户，网络和信道参数来控制比特率，同时编码视频素材。
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4.发明授权Method and device for error control of a macroblock-based video compression technique 失效基于宏块视频压缩技术的误差控制方法和装置
公开(公告)号：US5778191A
公开(公告)日：1998-07-07
申请号：US548385
申请日：1995-10-26
摘要： The present invention provides a method (200) and device (300) for error control of a video compressed sequence in which error protection for both random and burst channel errors is provided. The error control syntax (100) applies a fixed length packet synchronization system to variable length coded compressed video data, which provides the capability to limit error propagation within the decoded video bit stream. The fixed length packet control information provides information to decode compressed video data in both forward and reverse directions to allow for the recovery of correctly decoded video data within a decoded frame after long bursts of channel errors while reducing the overhead for error control. The error control method also provides video error detection which may be used for error concealment.
摘要翻译： 本发明提供一种视频压缩序列的误差控制的方法（200）和装置（300），其中提供了随机和突发信道错误的错误保护。 错误控制语法（100）将固定长度分组同步系统应用于可变长度编码压缩视频数据，其提供限制解码视频比特流内的错误传播的能力。 固定长度分组控制信息提供用于在前向和反向两个方向解码压缩视频数据的信息，以允许在长时间的信道错误突发之后在解码帧内恢复正确解码的视频数据，同时减少错误控制的开销。 错误控制方法还提供可用于错误隐藏的视频错误检测。
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5.发明授权Method and device for control and compatible delivery of digitally compressed visual data in a heterogeneous communication network 有权用于异构通信网络中数字压缩视觉数据的控制和兼容传送的方法和设备公开(公告)号：US06498865B1
公开(公告)日：2002-12-24
申请号：US09248462
申请日：1999-02-11
IPC分类号： G06K936
CPC分类号： H04N21/23608 , H04N19/40 , H04N19/66 , H04N19/68 , H04N21/238
摘要： A method and apparatus automatically manipulates a digitally compressed video bitstream such that the result is compatible with different bandwidth and error resilience requirements at a receiving point in a heterogeneous communication network. The method and device provide for analysis of bitstream header information to determine its relevant coding syntax parameters. Feedback from the receiving point on the network is then used to identify error robustness requirements for an intermediate bitstream. The bitstream is then manipulated by an error robustness regulator to achieve error protection in the network. The bitrate requirements of the network establish a selection of relevant and irrelevant bits from the bitstream The present method and device include identification of irrelevant and low priority video bits; intentional introduction of packet losses to reduce bitrate while maintaining visual quality; use of replacement tags for irrelevant and low priority components of the bitstream for compatible decoding by a wide array of decoders; and insertion of resynchronization tags and translation of predictively coded video packet bits for the improvement of error resilience.
摘要翻译： 一种方法和装置自动地操纵数字压缩的视频比特流，使得该结果与异构通信网络中接收点处的不同带宽和错误弹性要求兼容。 该方法和装置提供对比特流报头信息的分析以确定其相关的编码语法参数。 然后使用网络上接收点的反馈来识别中间比特流的误码鲁棒性要求。 然后通过误差鲁棒性调节器来操纵比特流以实现网络中的错误保护。 网络的比特率要求从比特流建立相关和不相关比特的选择。本方法和设备包括识别不相关和低优先级的视频比特; 有意引入分组丢失以降低比特率，同时保持视觉质量; 使用替代标签用于比特流的不相关和低优先级组件，用于通过广泛的解码器进行兼容解码; 并插入重新同步标签和翻译预测编码的视频数据包位，以提高错误恢复能力。
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6.发明授权Method, device and digital camera for error control and region of interest localization of a wavelet based image compression system 失效用于误差控制的方法，设备和数码相机以及基于小波的图像压缩系统的感兴趣区域定位
公开(公告)号：US6141453A
公开(公告)日：2000-10-31
申请号：US022264
申请日：1998-02-11
CPC分类号： H04N19/44 , H04N19/127 , H04N19/166 , H04N19/17 , H04N19/61 , H04N19/63
摘要： The present invention provides a method (200, 400, 500, 600), device (300, 400, 500, 600, 700) and digital camera (800) for error control of a wavelet-based image codec, wherein wavelet coefficients are encoded using entropy coding. The method includes: A) utilizing, in a decoder, control information and a plurality of resynchronization markers inserted at arbitrary positions in a wavelet-based image bitstream wherein the control information provides decoding information for decoding at least a forward sequence of wavelet coefficients; and B) detecting errors in an image bitstream and limiting propagation of errors in a decoded image utilizing the control information and the plurality of resynchronization markers.
摘要翻译： 本发明提供了一种用于基于小波的图像编解码器的误差控制的方法（200,400,500,600），设备（300,400,500,600,700）和数字照相机（800），其中小波系数被编码 使用熵编码。 该方法包括：A）在解码器中利用插入在基于小波的图像比特流中的任意位置的控制信息和多个再同步标记，其中所述控制信息提供解码信息，用于至少解码小波系数的前向序列; 以及B）利用所述控制信息和所述多个再同步标记来检测图像比特流中的错误并限制解码图像中的错误的传播。
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7.发明授权Method, device and microprocessor for selectively compressing video frames of a motion compensated prediction-based video codec 失效用于选择性地压缩基于运动补偿预测的视频编解码器的视频帧的方法，装置和微处理器
公开(公告)号：US5764921A
公开(公告)日：1998-06-09
申请号：US548776
申请日：1995-10-26
申请人： Mark R. Banham , James C. Brailean , Stephen N. Levine , Aggelos K. Katsaggelos , Guido M. Schuster
发明人： Mark R. Banham , James C. Brailean , Stephen N. Levine , Aggelos K. Katsaggelos , Guido M. Schuster
CPC分类号： G06T9/00
摘要： A method (100, 200), device (300) and microprocessor (400) are provided for selectively compressing video frames of a motion compensated prediction-based video codec based on a predetermined set of compression techniques. An energy estimate of the current displaced frame difference, DFD, is used to compute a ratio between the estimate and a historical mean of energy estimates. The ratio is iteratively compared to a predetermined set of thresholds which are associated with the predetermined set of compression techniques. The comparisons are used to choose a technique based on the thresholds, and a technique is selected to be used for encoding the current DFD.
摘要翻译： 提供了一种方法（100,200），装置（300）和微处理器（400），用于基于预定的一组压缩技术选择性地压缩基于运动补偿预测的视频编解码器的视频帧。 目前的移位帧差的能量估计DFD用于计算估计值与能量估计的历史平均值之间的比值。 该比率被迭代地与与预定的压缩技术集合相关联的预定阈值集进行比较。 比较用于选择基于阈值的技术，并且选择用于编码当前DFD的技术。
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