公开(公告)号：US20120014452A1

公开(公告)日：2012-01-19

申请号：US13176124

申请日：2011-07-05

申请人： Ehsan Maani ,  Wei Liu ,  Ali Tabatabai

发明人： Ehsan Maani ,  Wei Liu ,  Ali Tabatabai

IPC分类号： H04N7/12

CPC分类号： H04N19/52 ,  H04N19/46 ,  H04N19/547 ,  H04N19/56 ,  H04N19/70

摘要： Motion Compensated Prediction (MCP) has been a key factor in most advanced video compression schemes. For further reduction in the residual signal energy in B-frames, bidirectional prediction where two motion-compensated signals are superimposed has also been utilized in most prior video coding standards such as MPEG-2 or MPEG-4/AVC. Syntax changes and appropriate motion vector prediction that allows efficient use of multi-parameter MCP is described. The prediction signal is constructed by linearly combining the motion-compensated signals from each parameter (or motion vector).

摘要翻译： 运动补偿预测（MCP）一直是大多数高级视频压缩方案的关键因素。 为了进一步降低B帧中的残留信号能量，在大多数先前的视频编码标准（例如MPEG-2或MPEG-4 / AVC）中也已经使用了叠加两个运动补偿信号的双向预测。 描述了允许有效使用多参数MCP的语法改变和适当的运动矢量预测。 通过线性组合来自每个参数（或运动矢量）的运动补偿信号来构造预测信号。

公开(公告)号：US20110188571A1

公开(公告)日：2011-08-04

申请号：US13018587

申请日：2011-02-01

申请人： Ehsan Maani ,  Wei Liu

发明人： Ehsan Maani ,  Wei Liu

IPC分类号： H04N7/32

CPC分类号： H04N19/523 ,  H04N19/117 ,  H04N19/61

摘要： Adaptive interpolation filters which are recursively updated based on previously reconstructed images, and which can differ within a single frame as they adapt to spatial changes. An initial set of filters is known within a coding system, including both encoder and decoder. Fractional-pel motion estimation of macroblock is generalized by communicating integer-pel motion vectors and an index to a selected prediction interpolation filter. Prediction filters are updated based on local correlation data comprising auto-correlation data, and/or cross-correlation data.

摘要翻译： 自适应内插滤波器，其基于先前重建的图像递归地更新，并且在适应空间变化的情况下在单个帧内可以不同。 在编码系统中已知一组初始滤波器，包括编码器和解码器。 通过将整数像素运动矢量和索引传送到所选择的预测内插滤波器来推广宏块的分数像素运动估计。 基于包括自相关数据和/或互相关数据的局部相关数据来更新预测滤波器。

公开(公告)号：US20120183050A1

公开(公告)日：2012-07-19

申请号：US13038182

申请日：2011-03-01

申请人： Wei Liu ,  Ehsan Maani ,  Lina Dong

发明人： Wei Liu ,  Ehsan Maani ,  Lina Dong

IPC分类号： H04N7/26 ,  H04N7/32

CPC分类号： H04N7/26888 ,  H04N19/117 ,  H04N19/14 ,  H04N19/196 ,  H04N19/463 ,  H04N19/82 ,  H04N19/86

摘要： A parametric loop filter uses a set of fixed filters to remove or reduce noise and artifacts introduced during video coding. The filters are pre-trained offline and hardwired into encoder and decoder, instead of online trained Wiener filters. The filters are able to be specified using one or more parameters including: direction, bandwidth along the direction (bw//) and bandwidth perpendicular to the direction (bw⊥). The filter to be used is able to be derived from local image characteristics or predicted from neighboring blocks. The parametric loop filter utilizes much less computation, delay and memory access at the encoder. Fixed coefficients allow fast implementation of filtering at the decoder. A parametric loop filter is able to be combined with online training to further improve performance, by allowing one or more fixed filters to be replaced with online trained Wiener filters.

摘要翻译： 参数环路滤波器使用一组固定滤波器来去除或减少视频编码期间引入的噪声和伪像。 滤波器经过离线预编程和硬连线到编码器和解码器中，而不是在线训练的维纳滤波器。 可以使用一个或多个参数来指定滤波器，包括：沿方向（bw //）的方向，带宽和垂直于方向（bw⊥）的带宽。 要使用的滤波器能够从本地图像特征导出或从相邻块预测。 参数环路滤波器在编码器处使用更少的计算，延迟和存储器访问。 固定系数允许在解码器处快速实现滤波。 参数环路滤波器能够与在线培训相结合，以进一步提高性能，允许使用在线训练的维纳滤波器替换一个或多个固定滤波器。

公开(公告)号：US08849053B2

公开(公告)日：2014-09-30

申请号：US13038182

申请日：2011-03-01

申请人： Wei Liu ,  Ehsan Maani ,  Lina Dong

发明人： Wei Liu ,  Ehsan Maani ,  Lina Dong

IPC分类号： G06K9/40 ,  H04N19/86 ,  H04N19/117 ,  H04N19/102 ,  H04N19/136 ,  H04N19/82 ,  H04N19/463

CPC分类号： H04N7/26888 ,  H04N19/117 ,  H04N19/14 ,  H04N19/196 ,  H04N19/463 ,  H04N19/82 ,  H04N19/86

摘要： A parametric loop filter uses a set of fixed filters to remove or reduce noise and artifacts introduced during video coding. The filters are pre-trained offline and hardwired into encoder and decoder, instead of online trained Wiener filters. The filters are able to be specified using one or more parameters including: direction, bandwidth along the direction (bw//) and bandwidth perpendicular to the direction (bw⊥). The filter to be used is able to be derived from local image characteristics or predicted from neighboring blocks. The parametric loop filter utilizes much less computation, delay and memory access at the encoder. Fixed coefficients allow fast implementation of filtering at the decoder. A parametric loop filter is able to be combined with online training to further improve performance, by allowing one or more fixed filters to be replaced with online trained Wiener filters.

摘要翻译： 参数环路滤波器使用一组固定滤波器来去除或减少视频编码期间引入的噪声和伪像。 滤波器经过离线预编程和硬连线到编码器和解码器中，而不是在线训练的维纳滤波器。 可以使用一个或多个参数来指定滤波器，包括：沿方向（bw //）的方向，带宽和垂直于方向（bw⊥）的带宽。 要使用的滤波器能够从本地图像特征导出或从相邻块预测。 参数环路滤波器在编码器处使用更少的计算，延迟和存储器访问。 固定系数允许在解码器处快速实现滤波。 参数环路滤波器能够与在线培训相结合，以进一步提高性能，允许使用在线训练的维纳滤波器替换一个或多个固定滤波器。

公开(公告)号：US20120183054A1

公开(公告)日：2012-07-19

申请号：US13227732

申请日：2011-09-08

申请人： Ehsan Maani ,  Wei Liu ,  Lina Dong ,  Ali Tabatabai

发明人： Ehsan Maani ,  Wei Liu ,  Lina Dong ,  Ali Tabatabai

IPC分类号： H04N7/32

CPC分类号： H04N19/186 ,  H04N19/13 ,  H04N19/159 ,  H04N19/463 ,  H04N19/503 ,  H04N19/593

摘要： Intra prediction is used in state-of-the-art video coding standards such as AVC. The intra prediction modes are coded into the bitstream. Luma and chroma components could potentially have different prediction modes. For chroma components, there are 7 different modes defined in AVC: vertical, horizontal, DC, diagonal directions, and “same as luma”. Statistics show that the “same as luma” mode is frequently used, but in AVC, this mode is encoded using more bits than other modes during entropy coding, therefore the coding efficiency is decreased. Accordingly, a modified binarization/codeword assignment for chroma intra mode signaling is able to be utilized for high efficiency video coding (HEVC), the next generation video coding standard.

摘要翻译： 帧内预测用于诸如AVC的最先进的视频编码标准。 帧内预测模式被编码到比特流中。 亮度和色度分量可能具有不同的预测模式。 对于色度分量，在AVC中定义了7种不同的模式：垂直，水平，直流，对角线方向和“与亮度相同”。 统计显示，经常使用“与亮度相同”的方式，但是在AVC中，在熵编码中，该模式比其他模式更多的位进行编码，因此编码效率降低。 因此，用于色度帧内信令的修正二值化/码字分配能够用于下一代视频编码标准中的高效率视频编码（HEVC）。

公开(公告)号：US08908755B2

公开(公告)日：2014-12-09

申请号：US13176124

申请日：2011-07-05

申请人： Ehsan Maani ,  Wei Liu ,  Ali Tabatabai

发明人： Ehsan Maani ,  Wei Liu ,  Ali Tabatabai

IPC分类号： H04N7/12 ,  H04N19/51 ,  H04N19/46 ,  H04N7/50

CPC分类号： H04N19/52 ,  H04N19/46 ,  H04N19/547 ,  H04N19/56 ,  H04N19/70

摘要： Motion Compensated Prediction (MCP) has been a key factor in most advanced video compression schemes. For further reduction in the residual signal energy in B-frames, bidirectional prediction where two motion-compensated signals are superimposed has also been utilized in most prior video coding standards such as MPEG-2 or MPEG-4/AVC. Syntax changes and appropriate motion vector prediction that allows efficient use of multi-parameter MCP is described. The prediction signal is constructed by linearly combining the motion-compensated signals from each parameter (or motion vector).

摘要翻译： 运动补偿预测（MCP）一直是大多数高级视频压缩方案的关键因素。 为了进一步降低B帧中的残留信号能量，在大多数先前的视频编码标准（例如MPEG-2或MPEG-4 / AVC）中也已经使用了叠加两个运动补偿信号的双向预测。 描述了允许有效使用多参数MCP的语法改变和适当的运动矢量预测。 通过线性组合来自每个参数（或运动矢量）的运动补偿信号来构造预测信号。

公开(公告)号：US08787444B2

公开(公告)日：2014-07-22

申请号：US13176132

申请日：2011-07-05

申请人： Ehsan Maani ,  Wei Liu ,  Ali Tabatabai

发明人： Ehsan Maani ,  Wei Liu ,  Ali Tabatabai

IPC分类号： H04N7/32 ,  H04N7/34 ,  H04N7/26

CPC分类号： H04N19/00551 ,  H04N19/463 ,  H04N19/593

摘要： Spatial domain directional intra prediction has been shown to be very effective to remove the correlation between the pixels in the current block and reconstructed neighbors. In AVC, 8 directional prediction modes (plus the DC prediction mode) are defined. The prediction mode number is signaled to the decoder using a simple predictive coding method. The previous intra prediction methods have two major disadvantages: lack of precision for arbitrary directional patterns and accuracy lack of accuracy to exploit geometric dependency between blocks. To address these issues, a new method accurately predicts the intra directions from reconstructed neighboring pixels and differentially encode the intra directions. This allows a more precise directional prediction without the significant increase in the cost for transmitting the side information.

摘要翻译： 已经显示空间域定向帧内预测对于去除当前块中的像素与重建的邻居之间的相关性非常有效。 在AVC中，定义了8种方向预测模式（加上DC预测模式）。 使用简单的预测编码方法将预测模式信号发送给解码器。 以前的帧内预测方法有两个主要缺点：对于任意方向模式缺乏精度，精度缺乏利用块之间的几何依赖关系。 为了解决这些问题，一种新的方法准确地预测重建的相邻像素的帧内方向，并对帧内方向进行差分编码。 这允许更精确的方向预测，而不会显着增加用于发送侧信息的成本。

公开(公告)号：US20120014443A1

公开(公告)日：2012-01-19

申请号：US13176132

申请日：2011-07-05

申请人： Ehsan Maani ,  Wei Liu ,  Ali Tabatabai

发明人： Ehsan Maani ,  Wei Liu ,  Ali Tabatabai

IPC分类号： H04N7/32

CPC分类号： H04N19/00551 ,  H04N19/463 ,  H04N19/593

摘要： Spatial domain directional intra prediction has been shown to be very effective to remove the correlation between the pixels in the current block and reconstructed neighbors. In AVC, 8 directional prediction modes (plus the DC prediction mode) are defined. The prediction mode number is signaled to the decoder using a simple predictive coding method. The previous intra prediction methods have two major disadvantages: lack of precision for arbitrary directional patterns and accuracy lack of accuracy to exploit geometric dependency between blocks. To address these issues, a new method accurately predicts the intra directions from reconstructed neighboring pixels and differentially encode the intra directions. This allows a more precise directional prediction without the significant increase in the cost for transmitting the side information.

摘要翻译： 已经显示空间域定向帧内预测对于去除当前块中的像素与重建的邻居之间的相关性非常有效。 在AVC中，定义了8种方向预测模式（加上DC预测模式）。 使用简单的预测编码方法将预测模式信号发送给解码器。 以前的帧内预测方法有两个主要缺点：对于任意方向模式缺乏精度，精度缺乏利用块之间的几何依赖关系。 为了解决这些问题，一种新的方法准确地预测重建的相邻像素的帧内方向，并对帧内方向进行差分编码。 这允许更精确的方向预测，而不会显着增加用于发送侧信息的成本。

公开(公告)号：US11866156B1

公开(公告)日：2024-01-09

申请号：US17531766

申请日：2021-11-21

申请人： Wei Liu

发明人： Wei Liu

IPC分类号： B64C23/06 ,  B64C21/10

CPC分类号： B64C23/065 ,  B64C21/10

摘要： This invention is an apparatus for vortex generation by combining the function of means for vortex generation with the functions of the leading-edge aerodynamic surface, the airfoil, and/or the trailing-edge aerodynamic surface.

公开(公告)号：US11686448B1

公开(公告)日：2023-06-27

申请号：US17699103

申请日：2022-03-19

申请人： Wei Liu

发明人： Wei Liu

IPC分类号： B60Q1/00 ,  F21S41/683 ,  F21S41/32 ,  F21S41/43 ,  F21S41/25 ,  F21W102/135

CPC分类号： F21S41/683 ,  F21S41/25 ,  F21S41/32 ,  F21S41/43 ,  F21W2102/135

摘要： This invention is a projector headlight that, while offering dual beam patterns, boasts a 100% utilization of the light emitted from a light source by one of the following methods: (1) employing a reflective cutoff shield means to reflect the incoming light from said light source back to the reflector to enhance the illumination in low-beam pattern, (2) using reversible cutoff shield means to reflect the incoming light from said light source back to the reflector to enhance the illumination in low-beam pattern with no moving part involved, (3) utilizing a selective light-filter cutoff means to selectively reflect the incoming light from said light source back to the reflector to enhance the illumination in low-beam pattern without making use of any moving part, (4) using a low-beam light-emitting subassembly and a high-beam light-emitting subassembly that are separated by partition means to achieve dual beam patterns with no moving part, or (5) adopting a low-beam light-emitting subassembly in low-beam pattern and a high-beam light-emitting subassembly in high-beam pattern without any moving part.