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    • 10. 发明申请
    • METHODS AND APPARATUS FOR EDGE-BASED SPATIO-TEMPORAL FILTERING
    • 用于基于边缘的时空滤波的方法和装置
    • WO2007089803A2
    • 2007-08-09
    • PCT/US2007/002578
    • 2007-01-30
    • THOMSON LICENSINGTOURAPIS, Alexandros MichaelBOYCE, Jill MacDonald
    • TOURAPIS, Alexandros MichaelBOYCE, Jill MacDonald
    • H04N7/26
    • G06T5/002G06T5/50G06T7/13G06T2207/10016G06T2207/20012G06T2207/20182H04N7/0142H04N19/577H04N19/59H04N19/615H04N19/63H04N19/80H04N19/86
    • There are provided methods and apparatus for edge-based spatio-temporal filtering. An apparatus for filtering a sequence of pictures includes a spatial filter (110, 190), a motion compensator (130), a deblocking filter (140), and a temporal filter (150). The spatial filter (110, 190) is for spatially filtering a picture in the sequence and at least one reference picture selected from among previous pictures and subsequent pictures in the sequence with respect to the picture. The motion compensator (130), in signal communication with the spatial filter, is for forming, subsequent to spatial filtering, multiple temporal predictions for the picture from the at least one reference picture. The deblocking filter (140), in signal communication with the motion compensator, is for deblock filtering the multiple temporal predictions. The temporal filter (150), in signal communication with the deblocking filter, is for temporally filtering the multiple temporal predictions and combining the multiple temporal predictions to generate a noise reduced version of the picture.
    • 提供了基于边缘的时空滤波的方法和装置。 用于对图像序列进行滤波的装置包括空间滤波器(110,190),运动补偿器(130),去块滤波器(140)和时间滤波器(150)。 空间滤波器(110,190)用于对序列中的图像进行空间滤波,并且对于相对于图像的顺序,选择从先前图像和后续图像中选出的至少一个参考图像。 与空间滤波器进行信号通信的运动补偿器(130)用于在空间滤波之后形成来自至少一个参考图片的图像的多个时间预测。 与运动补偿器进行信号通信的去块滤波器(140)用于对多个时间预测进行去块滤波。 与去块滤波器信号通信的时间滤波器(150)用于对多个时间预测进行时间滤波并组合多个时间预测以产生图像的降噪版本。