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    • 1. 发明授权
    • Apparatus and method of processing image data
    • 处理图像数据的装置和方法
    • US06771271B2
    • 2004-08-03
    • US10170604
    • 2002-06-13
    • Ke NingMarc HoffmanGabby Yi
    • Ke NingMarc HoffmanGabby Yi
    • G06F1300
    • G06T1/60
    • A relatively high speed circular memory device, in combination with other processes, improves image processing efficiency. To that end, a method and apparatus of processing image data stored in an initial memory logically divides the image into a plurality of contiguous strips. A first plurality of the strips are stored in a working memory having a circular addressing arrangement, where the working memory is faster than the initial memory and has a plurality of sequential address locations. The first plurality of strips are contiguous and have a start address. In addition, the first plurality of strips are stored in the working memory in a contiguous manner, and processed through the working memory relative to the start address.
    • 与其他工艺相结合的相对高速的圆形存储器件提高了图像处理效率。 为此,将存储在初始存储器中的图像数据进行处理的方法和装置将图像逻辑地划分成多个连续的条带。 第一组多个条被存储在具有圆形寻址布置的工作存储器中,其中工作存储器比初始存储器快,并且具有多个顺序地址位置。 第一组多个条带是连续的并且具有起始地址。 此外,第一多个条以连续的方式存储在工作存储器中,并且通过工作存储器相对于起始地址进行处理。
    • 2. 发明授权
    • Half pixel interpolator for video motion estimation accelerator
    • 用于视频运动估计加速器的半像素内插器
    • US08509567B2
    • 2013-08-13
    • US12136492
    • 2008-06-10
    • Mark CoxVladimir BotchevKe NingWei ZhangMarc Hoffman
    • Mark CoxVladimir BotchevKe NingWei ZhangMarc Hoffman
    • G06K9/32G06F7/38G09G5/00
    • H04N19/43H04N19/436H04N19/523H04N19/59H04N19/80
    • Methods and an apparatus are provided for interpolation of pixels in a pixel array having rows and columns of pixels. The apparatus includes a shift register array to shift pixel values of the pixel array, the shift register array including two or more shift registers; an interpolation filter array interconnected to the shift register array, the interpolation filter array including one or more interpolation filters; and a controller configured to provide pixel values in columns of the pixel array from the shift register array to respective interpolation filters in a first mode and configured to provide pixel values in rows of the pixel array from the shift register array to respective interpolation filters in a second mode. The controller may be configured to supply vertical sub-pixel values from the shift register array to the interpolation filters to generate diagonal sub-pixel values.
    • 提供了用于内插具有行和列像素的像素阵列中的像素的方法和装置。 该装置包括用于移位像素阵列的像素值的移位寄存器阵列,该移位寄存器阵列包括两个或多个移位寄存器; 互连到移位寄存器阵列的插值滤波器阵列,所述插值滤波器阵列包括一个或多个插值滤波器; 以及控制器,被配置为以第一模式将来自移位寄存器阵列的像素阵列的列中的像素值提供给第一模式的各个内插滤波器,并且被配置为将像素阵列中的像素值从移位寄存器阵列提供给相应的内插滤波器 第二模式。 控制器可以被配置为将来自移位寄存器阵列的垂直子像素值提供给内插滤波器以产生对角子像素值。
    • 3. 发明申请
    • Randomly sub-sampled partition voting (RSVP) algorithm for scene change detection
    • 用于场景变化检测的随机子采样分区投票(RSVP)算法
    • US20070160288A1
    • 2007-07-12
    • US11638951
    • 2006-12-14
    • Marc HoffmanWei ZhangKe Ning
    • Marc HoffmanWei ZhangKe Ning
    • G06K9/00G06K9/34
    • H04N5/147G06K9/00711H04N19/137H04N19/14H04N19/17H04N19/87
    • A system and method for scene change detection in a video sequence employing a randomly sub-sampled partition voting (RSPV) algorithm is provided. In the video sequence, a current frame is divided into a number of partitions. Each partition is randomly sub-sampled and a histogram of the pixel intensity values is built to determine whether the current partition differs from the corresponding partition in a reference frame. A bin-by-bin absolute histogram difference between a partition in the current frame and a co-located partition in the reference frame is calculated. The histogram difference is compared to an adaptive threshold. If the majority of the examined partitions has significant changes, a scene change is detected. The RSPV algorithm is motion-independent and characterized by a significantly reduced cost of memory access and computations.
    • 提供了一种使用随机子采样分区投票(RSPV)算法的视频序列中的场景变化检测的系统和方法。 在视频序列中,当前帧被划分成多个分区。 每个分区被随机子采样,并且构建像素强度值的直方图以确定当前分区是否与参考帧中的对应分区不同。 计算当前帧中的分区与参考帧中的同位置分区之间的逐位绝对直方图差异。 将直方图差异与自适应阈值进行比较。 如果被检查的大部分分区有显着的变化,则检测到场景变化。 RSPV算法是运​​动无关的,其特征在于显着降低了存储器访问和计算的成本。
    • 4. 发明授权
    • Motion estimation using prediction guided decimated search
    • 运动估计使用预测指导抽取搜索
    • US08406303B2
    • 2013-03-26
    • US11638838
    • 2006-12-14
    • Marc HoffmanWei ZhangRaka SinghKe Ning
    • Marc HoffmanWei ZhangRaka SinghKe Ning
    • H04N11/04
    • H04N19/57G06T7/223H04N19/523H04N19/533H04N19/557H04N19/56
    • A method and apparatus utilizing a prediction guided decimated search motion estimation algorithm are provided. The prediction guided decimated search motion estimation algorithm generates a motion vector used to encode a macroblock in a frame from a video sequence. The algorithm includes generating full-pixel seed vectors, performing a full-pixel search around the generated seed vectors, which is followed by a fractional pixel search. The full-pixel seed vectors generated are a predicted motion vector and a hierarchical motion vector. A fractional pixel search may be conducted around a final motion vector generated by the full-pixel search and may include a half-pixel search and a quarter-pixel search. The prediction guided decimated search motion estimation algorithm can be implemented in both software and hardware. The algorithm is characterized by improved efficiency, scalability, and decreased complexity.
    • 提供了利用预测引导抽取搜索运动估计算法的方法和装置。 预测引导抽取搜索运动估计算法生成用于对来自视频序列的帧中的宏块进行编码的运动矢量。 该算法包括生成全像素种子矢量,围绕生成的种子矢量执行全像素搜索,其后跟分数像素搜索。 生成的全像素种子矢量是预测运动矢量和分层运动矢量。 可以围绕由全像素搜索生成的最终运动矢量进行分数像素搜索,并且可以包括半像素搜索和四分之一像素搜索。 预测引导的抽取搜索运动估计算法可以在软件和硬件两个方面实现。 该算法的特征在于提高效率,可扩展性和降低的复杂性。
    • 5. 发明申请
    • Motion estimation using prediction guided decimated search
    • 运动估计使用预测指导抽取搜索
    • US20070183504A1
    • 2007-08-09
    • US11638838
    • 2006-12-14
    • Marc HoffmanWei ZhangRaka SinghKe Ning
    • Marc HoffmanWei ZhangRaka SinghKe Ning
    • H04N11/02H04N7/12
    • H04N19/57G06T7/223H04N19/523H04N19/533H04N19/557H04N19/56
    • A method and apparatus utilizing a prediction guided decimated search motion estimation algorithm are provided. The prediction guided decimated search motion estimation algorithm generates a motion vector used to encode a macroblock in a frame from a video sequence. The algorithm includes generating full-pixel seed vectors, performing a full-pixel search around the generated seed vectors, which is followed by a fractional pixel search. The full-pixel seed vectors generated are a predicted motion vector and a hierarchical motion vector. A fractional pixel search may be conducted around a final motion vector generated by the full-pixel search and may include a half-pixel search and a quarter-pixel search. The prediction guided decimated search motion estimation algorithm can be implemented in both software and hardware. The algorithm is characterized by improved efficiency, scalability, and decreased complexity.
    • 提供了利用预测引导抽取搜索运动估计算法的方法和装置。 预测引导抽取搜索运动估计算法生成用于对来自视频序列的帧中的宏块进行编码的运动矢量。 该算法包括生成全像素种子矢量,围绕生成的种子矢量执行全像素搜索,其后跟分数像素搜索。 生成的全像素种子矢量是预测运动矢量和分层运动矢量。 可以围绕由全像素搜索生成的最终运动矢量进行分数像素搜索,并且可以包括半像素搜索和四分之一像素搜索。 预测引导的抽取搜索运动估计算法可以在软件和硬件两个方面实现。 该算法的特征在于提高效率,可扩展性和降低的复杂性。
    • 6. 发明申请
    • HALF PIXEL INTERPOLATOR FOR VIDEO MOTION ESTIMATION ACCELERATOR
    • 用于视频运动估计加速器的半像素插值器
    • US20090016634A1
    • 2009-01-15
    • US12136492
    • 2008-06-10
    • Mark CoxVladimir BotchevKe NingWei ZhangMarc Hoffman
    • Mark CoxVladimir BotchevKe NingWei ZhangMarc Hoffman
    • G06K9/40G06K9/32
    • H04N19/43H04N19/436H04N19/523H04N19/59H04N19/80
    • Methods and an apparatus are provided for interpolation of pixels in a pixel array having rows and columns of pixels. The apparatus includes a shift register array to shift pixel values of the pixel array, the shift register array including two or more shift registers; an interpolation filter array interconnected to the shift register array, the interpolation filter array including one or more interpolation filters; and a controller configured to provide pixel values in columns of the pixel array from the shift register array to respective interpolation filters in a first mode and configured to provide pixel values in rows of the pixel array from the shift register array to respective interpolation filters in a second mode. The controller may be configured to supply vertical sub-pixel values from the shift register array to the interpolation filters to generate diagonal sub-pixel values.
    • 提供了用于内插具有行和列像素的像素阵列中的像素的方法和装置。 该装置包括用于移位像素阵列的像素值的移位寄存器阵列,该移位寄存器阵列包括两个或多个移位寄存器; 互连到移位寄存器阵列的插值滤波器阵列,所述插值滤波器阵列包括一个或多个插值滤波器; 以及控制器,被配置为以第一模式将来自移位寄存器阵列的像素阵列的列中的像素值提供给第一模式的各个内插滤波器,并且被配置为将像素阵列中的像素值从移位寄存器阵列提供给相应的内插滤波器 第二模式。 控制器可以被配置为将来自移位寄存器阵列的垂直子像素值提供给内插滤波器以产生对角子像素值。