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    • 5. 发明申请
    • APPARATUS AND METHODS FOR PERFORMING BLOCK MATCHING ON A VIDEO STREAM
    • 在视频流中执行块匹配的装置和方法
    • US20130094567A1
    • 2013-04-18
    • US13275715
    • 2011-10-18
    • Amichay AmitayAlexander RabinovitchLeonid Dubrovin
    • Amichay AmitayAlexander RabinovitchLeonid Dubrovin
    • H04N7/26G09G5/39G06F13/14G09G5/36
    • H04N19/433G09G5/39G09G2320/106G09G2340/02G09G2360/122H04N19/51H04N19/61
    • A data processing system for processing a video stream comprises memory array circuitry, memory access circuitry, and video processing circuitry. The memory array circuitry is characterized by a width and a height. The memory access circuitry is operative to cause, through a series of write operations, a series of two-dimensional data representations of different respective regions in a frame of the video stream to be stored in the memory array circuitry. The write operations occur such that only data missing from the memory array circuitry is written to the memory array circuitry during each write operation and such that the data is written modulo at least one of the width and the height of the memory array circuitry. Lastly, the video processing circuitry is operative to perform block matching on the video stream at least in part utilizing the series of two-dimensional data representations stored in the memory array circuitry.
    • 用于处理视频流的数据处理系统包括存储器阵列电路,存储器存取电路和视频处理电路。 存储器阵列电路的特征在于宽度和高度。 存储器访问电路可操作以通过一系列写入操作使得要存储在存储器阵列电路中的视频流的帧中的不同相应区域的一系列二维数据表示。 写入操作发生,使得仅在存储器阵列电路中丢失的数据在每个写入操作期间被写入存储器阵列电路,并且使得数据被写入存储器阵列电路的宽度和高度中的至少一个。 最后,视频处理电路用于至少部分利用存储在存储器阵列电路中的一系列二维数据表示来对视频流执行块匹配。
    • 8. 发明申请
    • INTRA-PREDICTION MODE SELECTION WHILE ENCODING A PICTURE
    • 在编辑图像时进行预测模式选择
    • US20130107957A1
    • 2013-05-02
    • US13285353
    • 2011-10-31
    • Alexander RabinovitchLeonid DubrovinAmichay Amitay
    • Alexander RabinovitchLeonid DubrovinAmichay Amitay
    • H04N7/32
    • H04N19/11H04N19/147H04N19/176H04N19/423H04N19/593
    • An apparatus having a memory and a circuit is disclosed. The memory may be configured to store a picture being encoded. The circuit may be configured to calculate a plurality of first arrays directly from a plurality of neighboring samples around a current block of the picture. Each first array generally represents a respective one of a plurality of intra-prediction modes. Each first array may be spatially smaller than the current block. The circuit may also be configured to calculate a second array from a plurality of current samples in the current block. The second array may spatially match the first arrays. The circuit may be further configured to generate a plurality of scores of the intra-prediction modes by comparing the first arrays with the second array and select a given one of the intra-prediction modes corresponding to a lowest of the scores to encode the current block.
    • 公开了一种具有存储器和电路的装置。 存储器可以被配置为存储被编码的图像。 电路可以被配置为直接从图像的当前块周围的多个相邻样本计算多个第一阵列。 每个第一阵列通常表示多个帧内预测模式中的相应一个。 每个第一阵列可以在空间上小于当前块。 电路还可以被配置为从当前块中的多个当前样本计算第二阵列。 第二阵列可以在空间上匹配第一阵列。 该电路还可以被配置为通过将第一阵列与第二阵列进行比较来产生多个分数的帧内预测模式,并且选择与最低分数相对应的帧内预测模式中的给定一个来编码当前块 。
    • 9. 发明申请
    • CACHE PREFETCH DURING MOTION ESTIMATION
    • 运动估计期间的高速缓存
    • US20130136181A1
    • 2013-05-30
    • US13307393
    • 2011-11-30
    • Amichay AmitayAlexander RabinovitchLeonid Dubrovin
    • Amichay AmitayAlexander RabinovitchLeonid Dubrovin
    • H04N7/32
    • H04N19/533H04N19/433
    • An apparatus having a cache and a processor. The cache may be configured to (i) buffer a first subset of reference samples of a reference picture to facilitate a motion estimation of a current block and (ii) prefetch a second subset of the reference samples while a first search pattern is being tested. The first search pattern used in the motion estimation generally defines multiple motion vectors to test. The reference samples of the second subset may be utilized by a second search pattern in the motion estimation of the current block. The prefetch of the second subset may be based on a geometry of the first search pattern and scores of the motion vectors already tested. The processor may be configured to calculate the scores of the motion vectors by a block comparison of the reference samples to the current block according to the first search pattern.
    • 具有高速缓存和处理器的装置。 高速缓存可以被配置为(i)缓冲参考图片的参考样本的第一子集,以促进当前块的运动估计,以及(ii)在测试第一搜索模式的同时预取参考样本的第二子集。 在运动估计中使用的第一搜索模式通常定义要测试的多个运动矢量。 第二子集的参考样本可以由当前块的运动估计中的第二搜索模式来利用。 第二子集的预取可以基于第一搜索模式的几何形状和已经测试的运动矢量的分数。 处理器可以被配置为根据第一搜索模式通过参考样本与当前块的块比较来计算运动矢量的得分。