公开(公告)号：US07099389B1

公开(公告)日：2006-08-29

申请号：US10316483

申请日：2002-12-10

申请人： Guoyao Yu ,  Zhi Zhou ,  Charles H. Van Dusen

发明人： Guoyao Yu ,  Zhi Zhou ,  Charles H. Van Dusen

IPC分类号： H04N7/12 ,  H04N11/02

CPC分类号： H04N19/115 ,  H04N19/117 ,  H04N19/124 ,  H04N19/152 ,  H04N19/172 ,  H04N19/177 ,  H04N19/40 ,  H04N19/61 ,  H04N19/80 ,  H04N19/85

摘要： A method of rate control using a picture-based lookahead sliding window in a dual-pass transcoder/encoder compressed video architecture extracts statistics from an input video signal according to a simple compression standard, the input video signal being a compressed video signal for transcoding or an uncompressed video signal for encoding. A trans-factor is calculated for a current picture based on previous pictures in a sliding window to predict the complexity of the current picture, the trans-factor being a ratio of global complexity measures for the simple compression standard versus a sophisticated compression standard. Bits for the current picture are then allocated based on the complexity of future pictures in the sliding window. After encoding the current picture according to the sophisticated compression standard, the target bits of and the picture complexity in the sliding window, as well as the trans-factor, are updated as the window is moved by one picture. The extraction of the statistics is achieved in a transcoder by using a simple compression standard decoder to produce the statistics from the compressed video signal as the input video signal, and in an encoder by using a simple compression encoder to generate the statistics from the uncompressed video signal as the input video signal.

摘要翻译： 在双通道代码转换器/编码器压缩视频架构中使用基于图像的前瞻滑动窗口的速率控制方法根据简单的压缩标准从输入视频信号中提取统计信息，输入视频信号是用于代码转换的压缩视频信号， 用于编码的未压缩视频信号。 基于滑动窗口中的先前图像来计算当前图像的转换因子，以预测当前图像的复杂度，反向因子是简单压缩标准与复杂压缩标准的全局复杂度度量之比。 然后根据滑动窗口中未来图片的复杂度分配当前图片的位。 在根据复杂的压缩标准对当前图像进行编码之后，当窗口被一个图像移动时，更新滑动窗口中的目标位和图像复杂度以及变换因子。 通过使用简单的压缩标准解码器从压缩视频信号作为输入视频信号产生统计信息，并且在编码器中通过使用简单的压缩编码器来生成来自未压缩视频的统计信息，在代码转换器中实现统计的提取 信号作为输入视频信号。

公开(公告)号：US20120027082A1

公开(公告)日：2012-02-02

申请号：US13253937

申请日：2011-10-05

申请人： Guoyao Yu ,  Mayer D. Schwartz ,  Charles H. Van Dusen ,  Peter Borgwardt

发明人： Guoyao Yu ,  Mayer D. Schwartz ,  Charles H. Van Dusen ,  Peter Borgwardt

IPC分类号： H04N7/26 ,  H04N7/32

CPC分类号： H04N21/44004 ,  H04N19/115 ,  H04N19/124 ,  H04N19/14 ,  H04N19/15 ,  H04N19/152 ,  H04N19/172 ,  H04N19/176 ,  H04N19/194 ,  H04N19/436 ,  H04N21/23406

摘要： A method of operating a multi-processor video encoder by determining a target size corresponding to a preferred number of bits to be used when creating an encoded version of a picture in a group of sequential pictures making up a video sequence. The method includes the steps of calculating a first degree of fullness of a coded picture buffer at a first time, operating on the first degree of fullness to return an estimated second degree of fullness of the coded picture buffer at a second time, and operating on the second degree of fullness to return an initial target sized for the picture. The first time corresponds to the most recent time an accurate degree of fullness of the coded picture buffer can be calculated and the second time occurs after the first time.

摘要翻译： 一种通过在构成视频序列的一组连续图像中创建图像的编码版本时，通过确定与要使用的优选位数相对应的目标大小来操作多处理器视频编码器的方法。 该方法包括以下步骤：在第一时间计算编码图像缓冲器的第一饱和度，在第一次饱和度下操作，以在第二时间返回编码图像缓冲器的估计第二饱和度，并且操作 第二度的丰满度返回一幅初始的图像大小。 第一次对应于最近的时间，可以计算编码图像缓冲器的准确程度的饱和度，并且第二次在第一次之后发生。

公开(公告)号：US06931059B1

公开(公告)日：2005-08-16

申请号：US09616109

申请日：2000-07-14

申请人： Charles H. Van Dusen ,  Mayer D. Schwartz ,  Guoyao Yu

发明人： Charles H. Van Dusen ,  Mayer D. Schwartz ,  Guoyao Yu

IPC分类号： G06T9/00 ,  H04N7/26 ,  H04N21/6373 ,  H04N21/6377 ,  H04N21/658 ,  H04N7/18

CPC分类号： H04N19/40 ,  H04N21/6373 ,  H04N21/6377 ,  H04N21/658

摘要： A rate and delivery time multiplexing for bandwidth optimization algorithm has an allocation portion and a transrating portion. The allocation portion determines how many bits are available for each group of pictures in each program stream that is to be inserted into an outgoing MPEG Transport Stream (MTS). Based upon the allocated bits the transrating portion, when necessary, further compresses the program streams either in the compressed domain when rate reduction is minimal or in the pixel domain when rate reduction is significant. The result is the ability to transmit more video program streams over a given fixed bandwidth pipe for a given level of acceptable picture degradation.

摘要翻译： 用于带宽优化算法的速率和传送时间复用具有分配部分和转换部分。 分配部分确定将要插入到输出MPEG传输流（MTS）的每个节目流中的每组图像可用多少比特。 基于所分配的位，当需要时，当速率降低最小时或者当速率降低显着时在像素域中，必要时，转移部分进一步压缩压缩域中的程序流。 结果是在给定的可接受的图像劣化水平下，通过给定的固定带宽管道传输更多的视频节目流的能力。

公开(公告)号：US09374615B2

公开(公告)日：2016-06-21

申请号：US13253937

申请日：2011-10-05

申请人： Guoyao Yu ,  Mayer D. Schwartz ,  Charles H. Van Dusen ,  Peter Borgwardt

发明人： Guoyao Yu ,  Mayer D. Schwartz ,  Charles H. Van Dusen ,  Peter Borgwardt

IPC分类号： H04B1/66 ,  H04N21/44 ,  H04N21/234 ,  H04N19/176 ,  H04N19/172 ,  H04N19/15 ,  H04N19/115 ,  H04N19/124 ,  H04N19/14 ,  H04N19/152 ,  H04N19/194 ,  H04N19/436

CPC分类号： H04N21/44004 ,  H04N19/115 ,  H04N19/124 ,  H04N19/14 ,  H04N19/15 ,  H04N19/152 ,  H04N19/172 ,  H04N19/176 ,  H04N19/194 ,  H04N19/436 ,  H04N21/23406

摘要： A method of operating a multi-processor video encoder by determining a target size corresponding to a preferred number of bits to be used when creating an encoded version of a picture in a group of sequential pictures making up a video sequence. The method includes the steps of calculating a first degree of fullness of a coded picture buffer at a first time, operating on the first degree of fullness to return an estimated second degree of fullness of the coded picture buffer at a second time, and operating on the second degree of fullness to return an initial target sized for the picture. The first time corresponds to the most recent time an accurate degree of fullness of the coded picture buffer can be calculated and the second time occurs after the first time.

公开(公告)号：US08054880B2

公开(公告)日：2011-11-08

申请号：US11269428

申请日：2005-11-07

申请人： Guoyao Yu ,  Mayer D. Schwartz ,  Charles H. Van Dusen ,  Peter Borgwardt

发明人： Guoyao Yu ,  Mayer D. Schwartz ,  Charles H. Van Dusen ,  Peter Borgwardt

IPC分类号： H04N7/12

CPC分类号： H04N21/44004 ,  H04N19/115 ,  H04N19/124 ,  H04N19/14 ,  H04N19/15 ,  H04N19/152 ,  H04N19/172 ,  H04N19/176 ,  H04N19/194 ,  H04N19/436 ,  H04N21/23406

摘要： A method of operating a multi-processor video encoder by determining a target size corresponding to a preferred number of bits to be used when creating an encoded version of a picture in a group of sequential pictures making up a video sequence. The method includes the steps of calculating a first degree of fullness of a coded picture buffer at a first time, operating on the first degree of fullness to return an estimated second degree of fullness of the coded picture buffer at a second time, and operating on the second degree of fullness to return an initial target sized for the picture. The first time corresponds to the most recent time an accurate degree of fullness of the coded picture buffer can be calculated and the second time occurs after the first time.

摘要翻译： 一种通过在构成视频序列的一组连续图像中创建图像的编码版本时，通过确定与要使用的优选位数相对应的目标大小来操作多处理器视频编码器的方法。 该方法包括以下步骤：在第一时间计算编码图像缓冲器的第一饱和度，在第一次饱和度下操作，以在第二时间返回编码图像缓冲器的估计第二饱和度，并且操作 第二度的丰满度返回一幅初始的图像大小。 第一次对应于最近的时间，可以计算编码图像缓冲器的准确程度的饱和度，并且第二次在第一次之后发生。

公开(公告)号：US20060126728A1

公开(公告)日：2006-06-15

申请号：US11269428

申请日：2005-11-07

申请人： Guoyao Yu ,  Mayer Schwartz ,  Charles Van Dusen ,  Peter Borgwardt

发明人： Guoyao Yu ,  Mayer Schwartz ,  Charles Van Dusen ,  Peter Borgwardt

IPC分类号： H04N11/04 ,  H04B1/66 ,  H04N7/12 ,  H04N11/02

CPC分类号： H04N21/44004 ,  H04N19/115 ,  H04N19/124 ,  H04N19/14 ,  H04N19/15 ,  H04N19/152 ,  H04N19/172 ,  H04N19/176 ,  H04N19/194 ,  H04N19/436 ,  H04N21/23406

摘要： A method of operating a multi-processor video encoder by determining a target size corresponding to a preferred number of bits to be used when creating an encoded version of a picture in a group of sequential pictures making up a video sequence. The method includes the steps of calculating a first degree of fullness of a coded picture buffer at a first time, operating on the first degree of fullness to return an estimated second degree of fullness of the coded picture buffer at a second time, and operating on the second degree of fullness to return an initial target sized for the picture. The first time corresponds to the most recent time an accurate degree of fullness of the coded picture buffer can be calculated and the second time occurs after the first time.

摘要翻译： 一种通过在构成视频序列的一组连续图像中创建图像的编码版本时，通过确定与要使用的优选位数相对应的目标大小来操作多处理器视频编码器的方法。 该方法包括以下步骤：在第一时间计算编码图像缓冲器的第一饱和度，在第一次饱和度下操作，以在第二时间返回编码图像缓冲器的估计第二饱和度，并且操作 第二度的丰满度返回一幅初始的图像大小。 第一次对应于最近的时间，可以计算编码图像缓冲器的准确程度的饱和度，并且第二次在第一次之后发生。