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1.发明授权Adaptive encoding of a sequence of still frames or partially still frames within motion video 失效运动视频内的静止帧或部分静止帧序列的自适应编码公开(公告)号：US06895048B2
公开(公告)日：2005-05-17
申请号：US09046118
申请日：1998-03-20
申请人： Charles E. Boice , Barbara A. Hall , Agnes Y. Ngai , Charles J. Stein , Everett G. Vail, III , Edward F. Westermann
发明人： Charles E. Boice , Barbara A. Hall , Agnes Y. Ngai , Charles J. Stein , Everett G. Vail, III , Edward F. Westermann
CPC分类号： H04N19/124 , H04N19/132 , H04N19/137 , H04N19/14 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/61 , H04N19/85 , H04N19/86
摘要： Method, system and computer program product are provided for adaptively encoding in hardware, software or a combination thereof a series of still or partially still pictures using motion video encoding. A pre-encode statistics measurement unit is employed to derive statistics on each frame of the sequence of video frames to be encoded. The statistics are determinative of whether the frame comprises a still frame. If so, at least one controllable parameter to be used to encode the still frame is modified, and an encoding engine employs the at least one controllable parameter to encode the still frame so that pulsation artifacts are prevented between still frames of the series of still frames. Partial still picture encoding to prevent pulsation artifacts on a macroblock level is also addressed.
摘要翻译： 提供方法，系统和计算机程序产品用于使用运动视频编码在硬件，软件或其组合中自适应地编码一系列静止或部分静止图像。 采用预编码统计测量单元来导出要编码的视频帧序列的每个帧的统计。 统计信息决定了帧是否包括静止帧。 如果是这样，则修改用于对静止帧进行编码的至少一个可控参数，并且编码引擎使用至少一个可控参数对静止帧进行编码，从而在一系列静止帧的静止帧之间防止脉动伪影 。 还解决了用于防止宏块级别上的脉动伪像的部分静止图像编码。
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公开(公告)号：US06269120B1
公开(公告)日：2001-07-31
申请号：US09046288
申请日：1998-03-23
IPC分类号： H04N712
CPC分类号： H04N21/23406 , H04N19/115 , H04N19/137 , H04N19/14 , H04N19/149 , H04N19/15 , H04N19/152 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/61 , H04N21/23424 , H04N21/44016
摘要： A method to insert or splice new pictures into an existing video stream is provided where the video stream is compressed according to the MPEG-2 video compression standard. The method assures that the new pictures will fit into the encoded stream in the space allotted without running over or under their given bit allocation. The method comprises of steps by which a number of new pictures may be encoded to a precise bit target given the number of free bits in the buffer at the start and end of the splicing, while preventing buffer overruns and under runs.
摘要翻译： 提供了将新图像插入或拼接到现有视频流中的方法，其中视频流根据MPEG-2视频压缩标准被压缩。 该方法确保新图片将适应分配的空间中的编码流，而不会在给定的位分配下运行。 该方法包括以下步骤：为了在剪切的开始和结束时给定缓冲器中的空闲位的数目，可以将多个新图像编码到精确的位目标，同时防止缓冲区溢出和运行。
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公开(公告)号：US6040875A
公开(公告)日：2000-03-21
申请号：US046290
申请日：1998-03-23
CPC分类号： H04N5/265
摘要： A method to compensate for a fade in a digital video input sequence is provided where the video input sequence is to be compressed according to the MPEG-2 video compression standard. The method comprises a first step of dividing each frame of a current frame into two fields. In a second step, each field of the current frame is divided into at least one field band. In a third step, the luminance and chrominance pixel values are individually summed for the pixels in each field of the current frame. In a fourth step, the luminance pixel values are summed for the pixels in each field band of the current frame. In a fifth step, each respective field band sum and field sum of the current frame is compared with that of the previous frame in the video input sequence. In a sixth step, detection of whether or not a fade has occurred is provided, based upon the comparison in the fifth step. In a seventh step, the encoding algorithm is adjusted if a fade has occurred. Lastly, the first through seventh steps are repeated for at least one subsequent frame in the input video sequence.
摘要翻译： 提供一种补偿数字视频输入序列中的褪色的方法，其中视频输入序列将根据MPEG-2视频压缩标准进行压缩。 该方法包括将当前帧的每帧划分成两个场的第一步骤。 在第二步骤中，当前帧的每个场被划分成至少一个场频带。 在第三步骤中，针对当前帧的每个场中的像素对亮度和色度像素值进行单独相加。 在第四步骤中，针对当前帧的每个场频带中的像素求和亮度像素值。 在第五步骤中，将当前帧的每个相应的场频和和和与视频输入序列中的前一帧的场和进行比较。 在第六步骤中，基于第五步的比较，提供是否发生褪色的检测。 在第七步中，如果发生褪色，则调整编码算法。 最后，对输入视频序列中的至少一个后续帧重复第一至第七步骤。
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公开(公告)号：US06823013B1
公开(公告)日：2004-11-23
申请号：US09046289
申请日：1998-03-23
申请人： Charles E. Boice , John A. Murdock , Agnes Y. Ngai
发明人： Charles E. Boice , John A. Murdock , Agnes Y. Ngai
IPC分类号： H04B166
CPC分类号： H04N19/43 , H04N19/436 , H04N19/57
摘要： An apparatus used for video encoding MPEG compliant digital visual images, having multiple MPEG encoders used in the motion estimation function. The search capabilities used in the motion estimation function of a single MPEG encoder are extended beyond its design limitations as a result of utilizing more than one MPEG encoder. The utilization of multiple encoders effectively creates the capability for a user to specify a wider search window than what is available in a single encoder configuration. The computational search efficency associated with searching the wider window is not adversely affected as a consequence of the multiple processors subdividing the extended window and analyzing each subdivision in parallel.
摘要翻译： 一种用于视频编码MPEG兼容数字视觉图像的装置，具有用于运动估计功能的多个MPEG编码器。 使用单个MPEG编码器的运动估计功能的搜索能力由于使用多于一个的MPEG编码器而超出其设计限制。 多个编码器的利用有效地创建了用户指定比单个编码器配置中可用的更广泛的搜索窗口的能力。 与多个处理器细分扩展窗口并并行分析每个细分的结果，与搜索较宽窗口相关联的计算搜索效率不受不利影响。
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公开(公告)号：US06198772B1
公开(公告)日：2001-03-06
申请号：US08996856
申请日：1997-12-23
IPC分类号： H04N750
CPC分类号： H04N19/423 , H04N5/147 , H04N11/044 , H04N11/20 , H04N19/42 , H04N19/61
摘要： A digital video encoder system having a motion estimation processor, and an interface to the motion estimation processor. The motion estimation processor includes a reference memory interface, and inverse quantization processor, an inverse discrete cosine transform processor, and a motion estimation processor unit including a hierarchal search unit. The motion estimation processor is utilized generating temporally compressed datastreams, that is, I-P and I-P-B datastreams.
摘要翻译： 一种具有运动估计处理器的数字视频编码器系统以及与运动估计处理器的接口。 运动估计处理器包括参考存储器接口和逆量化处理器，反相离散余弦变换处理器，以及包括分级搜索单元的运动估计处理器单元。 使用运动估计处理器来生成时间压缩的数据流，即I-P和I-P-B数据流。
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6.发明授权Real-time variable bit rate encoding of video sequence employing statistics 失效使用图像统计的视频序列的实时可变比特率编码
公开(公告)号：US6097757A
公开(公告)日：2000-08-01
申请号：US8282
申请日：1998-01-16
CPC分类号： H04N19/182 , H04N19/107 , H04N19/114 , H04N19/124 , H04N19/137 , H04N19/14 , H04N19/149 , H04N19/162 , H04N19/172 , H04N19/186 , H04N19/51 , H04N19/61
摘要： Method, system and computer program product are provided for adaptively encoding in hardware, software or a combination thereof a sequence of video frames in real-time. Pre-encode perceptual activity measurement processing is employed to derive statistics on each frame of the sequence of video frames to be encoded. The statistics are used by variable bit rate logic to obtain a number of bits to be used in encoding each frame. The number of bits to be used is provided to a single encoding engine, which encodes the sequence of video frames and produces a constant quality, variable bit rate bitstream output. The pre-encode processing employs a regulator as the global data flow control and synchronization for the encoder. Perceptual activity analysis on each frame of the sequence of video frames can derive information on, for example, shading, scene change, fade, color, motion and/or edge presence within the frame. Voting gives greater weight to the presence of certain characteristics within the frame.
摘要翻译： 提供方法，系统和计算机程序产品，用于在硬件，软件或其组合中自动编码一系列视频帧。 采用预编码感知活动测量处理来导出要编码的视频帧序列的每个帧的统计。 统计量由可变比特率逻辑用于获得要用于编码每个帧的位数。 要使用的比特数被提供给单个编码引擎，其编码视频帧序列并产生恒定质量的可变比特率比特流输出。 预编码处理采用调节器作为编码器的全局数据流控制和同步。 对视频帧序列的每个帧的感知活动分析可以得到关于帧内的阴影，场景变化，褪色，颜色，运动和/或边缘存在的信息。 表决给予框架内存在某些特征的更大的权重。
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7.发明授权Real-time encoding of video sequence employing two encoders and statistical analysis 失效使用两个编码器的视频序列的实时编码和统计分析
公开(公告)号：US5978029A
公开(公告)日：1999-11-02
申请号：US8281
申请日：1998-01-16
申请人： Charles E. Boice , Barbara A. Hall , John M. Kaczmarczyk , Agnes Yee Ngai , Stephen P. Pokrinchak
发明人： Charles E. Boice , Barbara A. Hall , John M. Kaczmarczyk , Agnes Yee Ngai , Stephen P. Pokrinchak
CPC分类号： H04N19/87 , H04N19/124 , H04N19/137 , H04N19/14 , H04N19/142 , H04N19/149 , H04N19/154 , H04N19/176 , H04N19/179 , H04N19/61 , H04N19/85 , H04N19/146 , H04N19/30
摘要： Method, system and computer program product are provided for adaptively encoding in hardware, software or a combination thereof a sequence of video frames in real-time. A first encoding subsystem analyzes the sequence of video frames to derive information on at least one characteristic thereof, such as motion statistics, non-motion statistics, scene change statistics, or scene fade statistics. The gathered information may be either an intraframe characteristic or an interframe characteristic. A control processor is coupled to the first encoding subsystem to automatically analyze the gathered information in real time and dynamically produce a set of control parameters. A second encoding subsystem, coupled to the control processor, then encodes each frame of the sequence of video frames employing the corresponding set of control parameters.
摘要翻译： 提供方法，系统和计算机程序产品，用于在硬件，软件或其组合中自动编码一系列视频帧。 第一编码子系统分析视频帧的序列以得到关于其至少一个特征的信息，例如运动统计，非运动统计，场景变化统计或场景渐变统计。 所收集的信息可以是帧内特性或帧间特性。 控制处理器耦合到第一编码子系统以实时自动分析所收集的信息，并且动态地产生一组控制参数。 耦合到控制处理器的第二编码子系统然后使用相应的一组控制参数对视频帧序列的每个帧进行编码。
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8.发明申请SINGLE PASS VARIABLE BIT RATE CONTROL STRATEGY AND ENCODER FOR PROCESSING A VIDEO FRAME OF A SEQUENCE OF VIDEO FRAMES 失效单通道可变位速率控制策略和编码器，用于处理视频帧序列的视频帧公开(公告)号：US20080225943A1
公开(公告)日：2008-09-18
申请号：US12127119
申请日：2008-05-27
IPC分类号： H04N7/26
CPC分类号： H04N19/198 , H04N19/115 , H04N19/137 , H04N19/14 , H04N19/172 , H04N19/177 , H04N19/179 , H04N19/196 , H04N19/61
摘要： An encode control strategy is provided for variable bit rate encoding of a sequence of video frames in a single pass. The control strategy includes determining whether a video frame has a complexity level statistically outside a defined range from a complexity level of at least one preceding frame of the sequence of video frames, and if so, determining a new average bit rate target for the video frame. The new average bit rate for the video frame is determined employing at least one of spatial complexity and temporal complexity of the video frame. The new average bit rate target for the video frame is used to set frame level bit rate control parameter(s), and the video frame is encoded using the set frame level bit rate control parameter(s).
摘要翻译： 提供了编码控制策略，用于单次通过视频帧序列的可变比特率编码。 所述控制策略包括确定视频帧是否具有在视频帧序列的至少一个先前帧的复杂度级别以外的规定范围内的统计学上的复杂度级别，如果是，则确定视频帧的新的平均比特率目标 。 使用视频帧的空间复杂度和时间复杂度中的至少一个来确定视频帧的新的平均比特率。 用于视频帧的新的平均比特率目标用于设置帧级比特率控制参数，并且使用设置的帧级比特率控制参数对视频帧进行编码。
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公开(公告)号：US07512181B2
公开(公告)日：2009-03-31
申请号：US12127119
申请日：2008-05-27
CPC分类号： H04N19/198 , H04N19/115 , H04N19/137 , H04N19/14 , H04N19/172 , H04N19/177 , H04N19/179 , H04N19/196 , H04N19/61
摘要： An encode control strategy is provided for variable bit rate encoding of a sequence of video frames in a single pass. The control strategy includes determining whether a video frame has a complexity level statistically outside a defined range from a complexity level of at least one preceding frame of the sequence of video frames, and if so, determining a new average bit rate target for the video frame. The new average bit rate for the video frame is determined employing at least one of spatial complexity and temporal complexity of the video frame. The new average bit rate target for the video frame is used to set frame level bit rate control parameter(s), and the video frame is encoded using the set frame level bit rate control parameter(s).
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公开(公告)号：US06253333B1
公开(公告)日：2001-06-26
申请号：US09046284
申请日：1998-03-23
IPC分类号： G06F104
CPC分类号： G01R31/3016
摘要： Automatic generation of a timed delay for a timing clock signal input to an electronic device having a time critical circuit receiving address, data, and control signals at a first time interval and performing data storage and data output operations at subsequent second time intervals as determined by the timing clock signal input thereto. The time delay is generated by combination of a first control device for determining a timing condition of the time critical circuit in accordance with data output results corresponding to a first data storage operation performed by the time critical circuit; and, a second control circuit for automatically adjusting the input of the timing clock signal in time with respect to the first time interval in accordance with the data output results. Adjustment of the timing clock signal delay for subsequent data storage operations optimizes time critical circuit performance for the electronic device.
摘要翻译： 自动生成定时时钟信号，该定时时钟信号输入到具有时间关键电路的电子设备，该电子设备具有以第一时间间隔接收地址，数据和控制信号，并在随后的第二时间间隔执行数据存储和数据输出操作， 定时时钟信号输入到其中。 时间延迟通过组合第一控制装置而产生，该第一控制装置根据对应于由时间关键电路执行的第一数据存储操作的数据输出结果来确定时间关键电路的定时状态; 以及第二控制电路，用于根据数据输出结果自动调整定时时钟信号相对于第一时间间隔的时间。 用于后续数据存储操作的定时时钟信号延迟的调整优化了电子设备的时间关键电路性能。
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