公开(公告)号：US08670073B2

公开(公告)日：2014-03-11

申请号：US13073839

申请日：2011-03-28

申请人： Sheng Zhong ,  Alexander MacInnis

发明人： Sheng Zhong ,  Alexander MacInnis

IPC分类号： H04N5/21 ,  H04N9/64 ,  G06K9/40

CPC分类号： H04N5/21 ,  H04N5/145

摘要： A video processing device may compare a pixel or group of pixels of a current video picture to a pixel or group of pixels of a previous video picture. The video processing device may generate a motion vector for the pixel or group of pixels of the current video picture based on the comparison. The video processing device may determine an amount of filtering to be applied to the pixel or group of pixels of the current video picture. The video processing device may adjust the determined amount of filtering to be applied to the pixel or group of pixels based on the generated motion vector and based on a brightness value.

摘要翻译： 视频处理设备可以将当前视频图像的像素或像素组与先前视频图像的像素或像素组进行比较。 视频处理装置可以基于该比较生成当前视频图像的像素或像素组的运动矢量。 视频处理设备可以确定要应用于当前视频图像的像素或像素组的滤波量。 视频处理装置可以基于生成的运动矢量并且基于亮度值来调整要应用于像素或像素组的所确定的滤波量。

公开(公告)号：US08588513B2

公开(公告)日：2013-11-19

申请号：US11486331

申请日：2006-07-13

申请人： Alexander MacInnis ,  Sheng Zhong ,  Chenhui Feng

发明人： Alexander MacInnis ,  Sheng Zhong ,  Chenhui Feng

IPC分类号： G06K9/00

CPC分类号： H04N19/51 ,  H04N19/513

摘要： Described herein is a method and system for motion compensation. This system and method use confidence for motion vector selection. Relative cost and an estimate of noise power may be used to characterize residual values and influence confidence determination.

摘要翻译： 这里描述了一种用于运动补偿的方法和系统。 该系统和方法对运动矢量选择使用置信度。 可以使用相对成本和噪声功率的估计来表征残差值并影响置信度确定。

公开(公告)号：US08417066B2

公开(公告)日：2013-04-09

申请号：US10980200

申请日：2004-11-03

申请人： Sheng Zhong

发明人： Sheng Zhong

IPC分类号： G06K9/32

CPC分类号： G06T3/4007

摘要： Methods and systems for achieving high sub-pixel precision while processing a video signal are provided. Aspects of the method may include selecting IIR filter coefficients for implementing an IIR filter for filtering a video signal during scaling. Polyphase filter coefficients may be selected for implementing a polyphase filter for filtering the video signal during the scaling. The video signal may be filtered using a combination of the IIR filter having the selected IIR filter coefficients and the polyphase filter having the selected polyphase filter coefficients. The polyphase filter coefficients may implement a finite impulse response (FIR) filter for filtering the video signal. The video signal may be phase-shifted. The scaling of the video signal may comprise upscaling or downscaling the video signal. The video signal may be converted from a first format to a second format by combined IIR-filtering and polyphase filtering.

摘要翻译： 提供了在处理视频信号时实现高子像素精度的方法和系统。 方法的方面可以包括选择IIR滤波器系数，以实现在缩放期间对视频信号进行滤波的IIR滤波器。 可以选择多相滤波器系数来实现在缩放期间对视频信号进行滤波的多相滤波器。 可以使用具有所选择的IIR滤波器系数的IIR滤波器和具有所选择的多相滤波器系数的多相滤波器的组合来对视频信号进行滤波。 多相滤波器系数可以实现用于对视频信号进行滤波的有限脉冲响应（FIR）滤波器。 视频信号可以是相移的。 视频信号的缩放可以包括对视频信号进行升频或缩小。 视频信号可以通过组合的IIR滤波和多相滤波从第一格式转换成第二格式。

公开(公告)号：US08350966B2

公开(公告)日：2013-01-08

申请号：US12480364

申请日：2009-06-08

申请人： Sheng Zhong

发明人： Sheng Zhong

IPC分类号： H04N5/00

CPC分类号： H04N5/145 ,  G06K9/40 ,  G06T5/002 ,  G06T2207/10016 ,  H04N5/21

摘要： Two consecutive interlaced video pictures of the same polarity or two consecutive progressive video pictures are read by a video processing system. The video pictures may comprise a current picture and a noise reduced reference picture. Motion and/or motion vectors may be estimated between the current and reference pictures by a motion compensated noise detector and/or a motion compensated temporal filter. A noise level sample may be determined for a pixel in the current picture based on a window of pixel data from the current picture and a window of motion compensated pixel data from the reference picture. One or more of a moving edge gradient value, a moving content value and a determined range of noise level values may be utilized to determine a valid noise sample. Noise level samples may be accumulated and a noise level may be determined for the current picture.

摘要翻译： 由视频处理系统读取相同极性的两个连续的隔行视频图像或两个连续的逐行视频图像。 视频图片可以包括当前图片和降噪参考图片。 可以通过运动补偿噪声检测器和/或运动补偿时间滤波器在当前参考图像和参考图像之间估计运动和/或运动矢量。 可以基于来自当前图像的像素数据的窗口和来自参考图像的运动补偿像素数据的窗口，为当前图像中的像素确定噪声电平采样。 可以使用移动边缘梯度值，移动内容值和确定的噪声电平值范围中的一个或多个来确定有效噪声样本。 可以累积噪声级样本，并且可以为当前图像确定噪声水平。

公开(公告)号：US08335811B2

公开(公告)日：2012-12-18

申请号：US11513921

申请日：2006-08-31

申请人： Sheng Zhong

发明人： Sheng Zhong

IPC分类号： G06F17/14

CPC分类号： G06F17/147

摘要： In a data processing system, a method and system employing high fidelity inverse discrete cosine transform (IDCT) and discrete cosine transform (DCT) algorithms are provided. The values of the coefficients in a two-dimensional (2D) transform utilized in the IDCT and DCT algorithms may approximate the ideal integer output with sufficient visual quality. The transform coefficients may match a portion of the most significant bits (MSBs) or properly rounded bits of the coefficients of a reference transform matrix within an upper bound. The IDCT and DCT algorithms may specify constraints based on separating the 2D transform operation into two 1D transform operations in order to determine a minimum-bit width for each of the transform coefficients. The minimum-bit width may also be based on integer-bit precision of the data to be processed by the IDCT and DCT algorithms.

摘要翻译： 在数据处理系统中，提供了采用高保真逆离散余弦变换（DCTCT）和离散余弦变换（DCT）算法的方法和系统。 在IDCT和DCT算法中使用的二维（2D）变换中的系数值可以以足够的视觉质量近似理想的整数输出。 变换系数可以匹配上限中的参考变换矩阵的最高有效位（MSB）的一部分或系数的适当舍入的位。 IDCT和DCT算法可以基于将2D变换操作分成两个1D变换操作来指定约束，以便确定每个变换系数的最小位宽度。 最小位宽度也可以基于由IDCT和DCT算法处理的数据的整数位精度。

公开(公告)号：US08274605B2

公开(公告)日：2012-09-25

申请号：US11272116

申请日：2005-11-10

申请人： Alexander MacInnis ,  Sheng Zhong

发明人： Alexander MacInnis ,  Sheng Zhong

IPC分类号： H04N7/01 ,  H04N11/20

CPC分类号： H04N7/012 ,  H04N7/0137

摘要： Methods and systems for processing video information are disclosed herein and may comprise calculating a first two-field difference between a first plurality of pixels from a current field and a second plurality of corresponding pixels from an alternate field adjacent to the current field. At least one pixel from the current field may be deinterlaced based at least in part on the calculated first two-field difference. The first plurality of pixels and the second plurality of pixels may be aligned by adjusting a phase of at least one of the first plurality of pixels and the second plurality of pixels prior to the calculation of the first two-field difference. The first plurality of pixels may include a plurality of vertically adjacent pixels. The first plurality of pixels may comprise at least one luminance component. The alternate field may include a previous field and/or a next field. The first plurality of pixels and the second plurality of pixels may be filtered prior to the calculation of the first two-field difference.

摘要翻译： 本文公开了用于处理视频信息的方法和系统，并且可以包括计算来自当前场的第一多个像素与来自与当前场相邻的替代场的第二多个对应像素之间的第一两场差。 至少一部分来自当前场的像素可以至少部分地基于所计算出的第一两场差异进行去隔行扫描。 通过在计算第一双场差之前调整第一多个像素和第二多个像素中的至少一个的相位来对齐第一多个像素和第二多个像素。 第一多个像素可以包括多个垂直相邻的像素。 第一多个像素可以包括至少一个亮度分量。 替代字段可以包括前一字段和/或下一字段。 可以在计算第一双场差之前对第一多个像素和第二多个像素进行滤波。

公开(公告)号：US08005147B2

公开(公告)日：2011-08-23

申请号：US11400949

申请日：2006-04-05

申请人： Jose′ R. Alvarez ,  Alexander G. MacInnis ,  Sheng Zhong ,  Xiaodong Xie ,  Vivian Hsiun

发明人： Jose′ R. Alvarez ,  Alexander G. MacInnis ,  Sheng Zhong ,  Xiaodong Xie ,  Vivian Hsiun

IPC分类号： H04N7/18

CPC分类号： G06F9/3861 ,  G06F9/3877 ,  H04N19/12 ,  H04N19/122 ,  H04N19/129 ,  H04N19/13 ,  H04N19/157 ,  H04N19/176 ,  H04N19/423 ,  H04N19/44 ,  H04N19/60 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82 ,  H04N19/90

摘要： A system and method for decoding a digital video data stream. In one aspect, a plurality of hardware acceleration modules are used together with a core processor. The accelerators operate in a decoding pipeline wherein, in any given stage, each accelerator operates on a particular macroblock of video data. In the subsequent pipeline stage, each accelerator works on the next macroblock in the data stream, which was worked on by another one of the accelerators in the previous stage. The core processor polls all of the accelerators during each stage. When all accelerators finish their tasks for a given stage, the core processor initiates the next stage. In another aspect, two variable-length decoders are employed to simultaneously decode two macroblock rows of a video frame. Each variable-length decoder works to decode an assigned row and the rows are variable-length decoded in parallel. The variable-length decoders operate as part of a pipeline wherein the variable-length decoders alternate, stage-by-stage, decoding macroblocks.

摘要翻译： 一种用于解码数字视频数据流的系统和方法。 在一个方面，多个硬件加速模块与核心处理器一起使用。 加速器在解码管线中操作，其中在任何给定阶段，每个加速器对视频数据的特定宏块进行操作。 在随后的流水线阶段，每个加速器对数据流中的下一个宏块进行工作，该前一阶段的另一个加速器工作。 核心处理器在每个阶段轮询所有加速器。 当所有加速器在给定阶​​段完成任务时，核心处理器启动下一阶段。 在另一方面，采用两个可变长度解码器来同时解码视频帧的两个宏块行。 每个可变长度解码器用于对分配的行进行解码，并行并行地进行可变长度解码。 可变长度解码器作为流水线的一部分进行操作，其中可变长度解码器逐级交替解码宏块。

公开(公告)号：US07932955B2

公开(公告)日：2011-04-26

申请号：US11314680

申请日：2005-12-20

申请人： Sheng Zhong ,  Darren Neuman

发明人： Sheng Zhong ,  Darren Neuman

IPC分类号： H04N5/14

CPC分类号： H04N17/00 ,  H04N5/21

摘要： A method and system for content adaptive analog video noise detection are provided. A motion metric (MM) value, an edge detection value, and a content detection value may be determined for pixels in a video image. The MM values of pixels with edge detection values smaller than an edge threshold value and with content detection values smaller than a content threshold value may be collected and accumulated for a portion of the noise level intervals when the MM values fall in this interval. The MM values collected and accumulated may be utilized to determine an average noise level for each of the intervals. A noise level indicator (NLI) for the current video image may be determined based on the noise level of the current image or on the noise levels of the current and at least one previous video images.

摘要翻译： 提供了一种用于内容自适应模拟视频噪声检测的方法和系统。 可以为视频图像中的像素确定运动度量（MM）值，边缘检测值和内容检测值。 当MM值落在该间隔中时，对于边缘检测值小于边缘阈值并且具有小于内容阈值的内容检测值的像素的MM值可以被收集并累积用于噪声级别间隔的一部分。 收集和累积的MM值可用于确定每个间隔的平均噪声电平。 可以基于当前图像的噪声电平或当前视频图像和至少一个先前视频图像的噪声电平来确定当前视频图像的噪声电平指示符（NLI）。

公开(公告)号：US20100309378A1

公开(公告)日：2010-12-09

申请号：US12480364

申请日：2009-06-08

申请人： Sheng Zhong

发明人： Sheng Zhong

IPC分类号： G06K9/40 ,  H04N5/21

CPC分类号： H04N5/145 ,  G06K9/40 ,  G06T5/002 ,  G06T2207/10016 ,  H04N5/21

摘要： Two consecutive interlaced video pictures of the same polarity or two consecutive progressive video pictures are read by a video processing system. The video pictures may comprise a current picture and a noise reduced reference picture. Motion and/or motion vectors may be estimated between the current and reference pictures by a motion compensated noise detector and/or a motion compensated temporal filter. A noise level sample may be determined for a pixel in the current picture based on a window of pixel data from the current picture and a window of motion compensated pixel data from the reference picture. One or more of a moving edge gradient value, a moving content value and a determined range of noise level values may be utilized to determine a valid noise sample. Noise level samples may be accumulated and a noise level may be determined for the current picture.

摘要翻译： 由视频处理系统读取相同极性的两个连续的隔行视频图像或两个连续的逐行视频图像。 视频图片可以包括当前图片和降噪参考图片。 可以通过运动补偿噪声检测器和/或运动补偿时间滤波器在当前参考图像和参考图像之间估计运动和/或运动矢量。 可以基于来自当前图像的像素数据的窗口和来自参考图像的运动补偿像素数据的窗口，为当前图像中的像素确定噪声电平采样。 可以使用移动边缘梯度值，移动内容值和确定的噪声电平值范围中的一个或多个来确定有效噪声样本。 可以累积噪声级样本，并且可以为当前图像确定噪声水平。

公开(公告)号：US20100182318A1

公开(公告)日：2010-07-22

申请号：US12752304

申请日：2010-04-01

申请人： Alexander G. MacInnis ,  Sheng Zhong

发明人： Alexander G. MacInnis ,  Sheng Zhong

IPC分类号： G06T17/00

CPC分类号： H04N5/44504 ,  G09G5/363 ,  G09G2340/02 ,  G09G2340/0421 ,  G09G2340/125 ,  G09G2360/125 ,  H04N9/641 ,  H04N21/42653

摘要： A video and graphics system provides square graphics pixels to blend images having 640×480 pixels, such as graphics images provided by some set top boxes and intended to be displayed at a 12.27 MHz display sample rate, with images having 704×480 pixels, such as ITU-R 601 compliant images such as NTSC SDTV images, having oblong pixels and displayed at a 13.5 MHz display sample rate. A sample rate converter including a multi-phase-multi-tap filter is used to generate square pixels. The multi-phase-multi-tap filter provides a good balance of sharpness, smoothness, anti-aliasing and reduced ringing. The multi-phase-multi-tap filter can also be used to convert images having 320×480 pixels to images having 704×480 pixels. The multi-tap filter can be used for scan rate conversion of graphics or video images for HDTV or SDTV applications.