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    • 4. 发明申请
    • MOTION ESTIMATION AND COMPENSATION WITH CONTROLLED VECTOR STATISTICS
    • 运动估计和补偿与控制矢量统计
    • WO2003005731A1
    • 2003-01-16
    • PCT/IB2002/002420
    • 2002-06-20
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.SCHUTTEN, Robert, J.RIEMENS, Abraham, K.VAN DER WOLF, Pieter
    • SCHUTTEN, Robert, J.RIEMENS, Abraham, K.VAN DER WOLF, Pieter
    • H04N7/34
    • H04N19/433H04N19/51
    • Method and system for motion compensation in video image data, comprising a motion estimator (12) arranged for analysing motion in consecutive frames of the video image data and deriving a motion vector field in dependence on said motion, a motion compensator (14) connected to the motion estimator (12) and first storage means (15). The motion compensator (14) is arranged for performing motion compensation by storing a subset of the video image data in a first storage means (15) and, for each vector retrieving the required data from the first storage means (15), where in cases that the required data is not entirely available in the first storage means (15), video image data containing at least the missing parts of the required data, is retrieved from a second storage means (10) and stored in the first storage means (15). The motion estimator (12) is further arranged to select motion vectors in the video motion vector field which meet at least one statistical property.
    • 一种视频图像数据中的运动补偿方法和系统,包括:运动估计器(12),用于分析视频图像数据的连续帧中的运动并根据所述运动导出运动矢量场;运动补偿器(14),连接到 运动估计器(12)和第一存储装置(15)。 运动补偿器(14)被布置为通过将视频图像数据的子集存储在第一存储装置(15)中并且对于从第一存储装置(15)检索所需数据的每个向量来执行运动补偿,其中在情况下 在第一存储装置(15)中所需数据不完全可用,至少包含所需数据的缺失部分的视频图像数据从第二存储装置(10)检索并存储在第一存储装置(15)中 )。 运动估计器(12)还被布置成选择满足至少一个统计特性的视频运动矢量场中的运动矢量。
    • 6. 发明申请
    • NOISE FILTERING IN IMAGES
    • 图像中的噪声滤波
    • WO2003073750A1
    • 2003-09-04
    • PCT/IB2003/000468
    • 2003-02-07
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.RIEMENS, Abraham, K.SCHUTTEN, Robert, J.
    • RIEMENS, Abraham, K.SCHUTTEN, Robert, J.
    • H04N5/21
    • H04N5/21
    • A temporal recursive filter unit (100,200,300,400) for noise filtering of a series of input images resulting in a series of output images comprises: means (102) for determining a value of a weighing factor, on basis of a difference between a first value of a first pixel of an input image and a second value of a second pixel of a first output image; and an adding (104) unit for calculating a third value of a third pixel of a second output image by adding of a first product of the value of the weighing factor and the first value of the first pixel, to a second product of a complement of the value of the weighing factor and the second value of the second pixel. The value (508) of the weighing factor is higher below a predetermined threshold (506) than above the threshold (506).
    • 用于对导致一系列输出图像的一系列输入图像的噪声滤波的时间递归滤波器单元(100,200,300,400)包括:用于基于第一值的差值来确定加权因子的值的装置(102) 输入图像的第一像素和第一输出图像的第二像素的第二值; 以及加法(104)单元,用于通过将所述加权因子的值和所述第一像素的第一值相加的第一乘积与补码的第二乘积相加来计算第二输出图像的第三像素的第三值 的加权因子的值和第二像素的第二值。 加权因子的值(508)比阈值(506)以上的预定阈值(506)更高。