公开(公告)号：EP1908300B1

公开(公告)日：2018-05-16

申请号：EP06772266.0

申请日：2006-06-06

申请人： Thomson Licensing DTV

发明人： WU, Zhenyu ,  LANDAIS, Frederic ,  PANDIT, Purvin, Bibhas ,  BOYCE, Jill MacDonald

IPC分类号： H04N19/89

CPC分类号： H04N19/159 ,  H04N19/577 ,  H04N19/895

摘要： There are provided method and apparatus for detecting and concealing reference and non-reference video frames. A video decoder includes an entropy decoder, an error detector, and an error concealer. The entropy decoder is for decompressing a video bitstream intended to have a fixed frame rate and parsing the decompressed video bitstream to find picture order counts for frames of the decompressed video bitstream. The error detector is for determining that a particular frame of the decompressed video bitstream is missing based upon the picture order counts. The error concealer is for concealing the particular frame. The method is accomplished by decompressing and parsing the video bitstream to find picture order counts for frames of the decompressed video bitstream and then determining that a particular frame of the decompressed video bitstream is missing based upon comparison of their associated picture order counts, and then concealing that particular frame.

公开(公告)号：EP1961236B1

公开(公告)日：2018-03-14

申请号：EP06826699.8

申请日：2006-10-26

申请人： Thomson Licensing DTV

发明人： BANDYOPADHYAY, Saurav Kumar ,  WU, Zhenyu ,  PANDIT, Purvin Bibhas ,  BOYCE, Jill MacDonald

IPC分类号： H04N19/51 ,  H04N19/44 ,  H04N19/895

CPC分类号： H04N19/895 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/51 ,  H04N19/513 ,  H04N19/86

摘要： There are provided methods and apparatus for block-based error concealment. An apparatus includes an error concealment module for concealing a current block in a lost picture in a group of pictures by using a last available inter-coded picture in a previous group of pictures, when the lost picture is a first inter-coded picture in the group of pictures. The group of pictures has a pattern characterized as an intra-coded picture followed by a sequence of inter-coded pictures.

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.