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    METHODS AND APPARATUS FOR EDGE-BASED SPATIO-TEMPORAL FILTERING
    1.
    发明授权
    METHODS AND APPARATUS FOR EDGE-BASED SPATIO-TEMPORAL FILTERING 有权

    公开(公告)号：EP1980109B1

    公开(公告)日：2018-07-11

    申请号：EP07709894.5

    申请日：2007-01-30

    申请人： Thomson Licensing DTV

    发明人： TOURAPIS, Alexandros ,  BOYCE, Jill MacDonald

    IPC分类号： H04N19/80 ,  H04N19/86

    CPC分类号： G06T5/002 ,  G06T5/50 ,  G06T7/13 ,  G06T2207/10016 ,  G06T2207/20012 ,  G06T2207/20182 ,  H04N7/0142 ,  H04N19/577 ,  H04N19/59 ,  H04N19/615 ,  H04N19/63 ,  H04N19/80 ,  H04N19/86

    摘要： There are provided methods and apparatus for edge-based spatio-temporal filtering. An apparatus for filtering a sequence of pictures includes a spatial filter, a motion compensator, a deblocking filter, and a temporal filter. The spatial filter 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, 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, in signal communication with the motion compensator, is for deblock filtering the multiple temporal predictions. The temporal filter, 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.

    METHODS AND APPARATUS FOR EDGE-BASED SPATIO-TEMPORAL FILTERING
    5.
    发明公开
    METHODS AND APPARATUS FOR EDGE-BASED SPATIO-TEMPORAL FILTERING 有权
    VERFAHREN UND VORRICHTUNGFÜRKANTENBASIERTE RAUM-ZEIT-FILTRIERUNG

    公开(公告)号：EP1980109A2

    公开(公告)日：2008-10-15

    申请号：EP07709894.5

    申请日：2007-01-30

    申请人： Thomson Licensing

    发明人： TOURAPIS, Alexandros ,  BOYCE, Jill MacDonald

    IPC分类号： H04N7/26

    CPC分类号： G06T5/002 ,  G06T5/50 ,  G06T7/13 ,  G06T2207/10016 ,  G06T2207/20012 ,  G06T2207/20182 ,  H04N7/0142 ,  H04N19/577 ,  H04N19/59 ,  H04N19/615 ,  H04N19/63 ,  H04N19/80 ,  H04N19/86

    摘要： There are provided methods and apparatus for edge-based spatio-temporal filtering. An apparatus for filtering a sequence of pictures includes a spatial filter, a motion compensator, a deblocking filter, and a temporal filter. The spatial filter 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, 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, in signal communication with the motion compensator, is for deblock filtering the multiple temporal predictions. The temporal filter, 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.

    摘要翻译： 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，运动补偿器，去块滤波器和时间滤波器。 空间滤波器用于对该图像序列中的图像进行空间滤波，并选择从先前图像中选择的至少一个参考图像和相对于该图像的序列中的后续图像。 与空间滤波器进行信号通信的运动补偿器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用于对多个时间预测进行去块滤波。 与去块滤波器进行信号通信的时间滤波器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。

    ADAPTIVE REFERENCE PICTURE GENERATION
    8.
    发明公开
    ADAPTIVE REFERENCE PICTURE GENERATION 审中-公开
    自适应参考文献

    公开(公告)号：EP1665804A1

    公开(公告)日：2006-06-07

    申请号：EP04783029.4

    申请日：2004-09-02

    申请人： Thomson Licensing S.A.

    发明人： TOURAPIS, Alexandros ,  BOYCE, Jill, MacDonald

    IPC分类号： H04N7/26

    CPC分类号： H04N19/85 ,  H04N19/46 ,  H04N19/61 ,  H04N19/82

    摘要： A video encoder (300) and corresponding method (700) are provided for encoding an input picture or image block using a prediction from a reference-only picture, where the encoder (300) includes a picture buffer (374) for storing a previously coded picture, and a reference processing unit (376) in signal communication with the picture buffer for generating the reference-only picture from a previously coded picture; and the corresponding method (700) includes receiving (712) a substantially uncompressed image block, filtering (714) a previously coded picture to create an adaptive reference, motion compensating (718) the adaptive reference, subtracting (722) the motion compensated adaptive reference from the substantially uncompressed image block, and encoding (724) the difference between the substantially uncompressed image block and the motion compensated adaptive reference. Video decoder (400) and corresponding method (800) are also disclosed.