公开(公告)号：EP1813119B1

公开(公告)日：2019-01-09

申请号：EP05824628.1

申请日：2005-11-08

申请人： Thomson Licensing

发明人： LLACH, Joan ,  GOMILA, Cristina ,  COOPER, Jeffrey Allen ,  BOYCE, Jill Macdonald

IPC分类号： G06T5/00 ,  H04N19/85 ,  H04N19/46 ,  H04N19/159 ,  H04N19/117

公开(公告)号：EP3179725A1

公开(公告)日：2017-06-14

申请号：EP17150704.9

申请日：2007-07-10

申请人： Thomson Licensing

发明人： PANDIT, Purvin Bibhas ,  SU, Yeping ,  YIN, Peng ,  GOMILA, Cristina ,  BOYCE, Jill MacDonald

IPC分类号： H04N19/597 ,  H04N19/70 ,  H04N19/30

CPC分类号： H04N19/30 ,  H04N19/597 ,  H04N19/70

摘要： There are provided methods and apparatus for signaling view scalability in multi-view video coding. An apparatus includes an encoder (100) for encoding at least one picture for at least one view corresponding to multi-view video content in a resultant bitstream. The encoder signals at least one of a view direction and a view level to support view scalability for the at least one view using at least one of a message, a field, a flag, and a syntax element.

摘要翻译： 有用于多视图视频编码的信令视图可扩展性提供的方法和装置。 一种装置包括编码器（100），用于编码至少一个画面的至少一个视图对应于产生的比特流多视图视频内容。 编码器信号的视图方向中的至少一个和一个视图级别以支持用于使用消息中的至少一个，一个字段，标志，和语法元素的所述至少一个视图的视图可扩展性。

公开(公告)号：EP1611740B1

公开(公告)日：2012-11-21

申请号：EP04714129.6

申请日：2004-02-24

申请人： Thomson Licensing

发明人： GOMILA, Cristina ,  BOYCE, Jill, MacDonald

IPC分类号： H04N5/262 ,  H04B1/66 ,  H04N7/12

CPC分类号： G06T5/002 ,  G06T2207/10016 ,  G06T2207/20204 ,  H04N19/117 ,  H04N19/136 ,  H04N19/179 ,  H04N19/85 ,  H04N19/86

摘要： Simulating film grain in an encoded image occurs by extracting the film grain and then characterizing the film grain for encoding in a video stream to enable the film grain restoration upon decoding. Typically, the film grain is characterized based either on the type of film, or by using a particular model. In practice, the film grain particulars are transmitted as parallel information to the video coded stream, typically as a film grain Supplemental Enhancement Information (SEI) message when using the ITU T H.264 video coding standard.

公开(公告)号：EP2382778A1

公开(公告)日：2011-11-02

申请号：EP09839386.1

申请日：2009-10-21

申请人： Thomson Licensing

发明人： SOLE, Joel ,  YIN, Peng ,  ZHENG, Yunfei ,  GOMILA, Cristina

IPC分类号： H04N7/12

CPC分类号： H04N19/136 ,  H04N19/119 ,  H04N19/12 ,  H04N19/122 ,  H04N19/137 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/197 ,  H04N19/46 ,  H04N19/463 ,  H04N19/61 ,  H04N19/70 ,  H04N19/86

摘要： There are provided methods and apparatus for transform selection in video coding. An apparatus includes a video encoder (300) for encoding at least a block in a picture by selecting a transform (329) to apply to a residue of the block from a set of two or more available transforms(325, 326, 327). The transform is selected based on an inter prediction mode used to predict at least one reference for the block.

摘要翻译： 提供了用于视频编码中的变换选择的方法和装置。 一种设备包括视频编码器，用于通过从一组两个或更多个可用变换中选择应用于块的残余的变换来编码图片中的至少一个块。 基于用于预测块的至少一个参考的一个帧间预测模式，与运动矢量相对应的一个或多个值，一个或多个先前编码块的残差的值，值 用于该块的预测数据的一个或多个变换选择，一个或多个相邻重构块的一个或多个变换选择以及应用于变换用于该块的残差的系数的量化步骤。

公开(公告)号：EP2294827A1

公开(公告)日：2011-03-16

申请号：EP09762911.7

申请日：2009-06-11

申请人： Thomson Licensing

发明人： GOMILA, Cristina ,  ESCODA, Oscar, Divorra ,  YIN, Peng ,  SOLE, Joel

IPC分类号： H04N7/50

CPC分类号： H04N19/59 ,  H04N19/102 ,  H04N19/132 ,  H04N19/157 ,  H04N19/184 ,  H04N19/186 ,  H04N19/61

摘要： Methods and apparatus are provided for video coding and decoding with reduced bit-depth update mode and reduced chroma sampling update mode. An apparatus includes an encoder (200) for encoding at least a portion of a picture using at least one of a reduced bit-depth update mode and a reduced chroma sampling update mode that respectively reduces at least one of a bit-depth and a chroma sampling of a residue signal corresponding to the portion.

摘要翻译： 提供了用于视频编码和解码具有降低的比特深度更新模式和降低的色度采样更新模式的方法和装置。 至少使用降低的比特深度更新模式中的至少一个和一个画面的一部分的装置，在编码器，用于编码包括降低的色度采样更新模式中那样分别降低比特深度的至少一者和一个色度采样 残余信号对应于该部分。

公开(公告)号：EP2070048B1

公开(公告)日：2010-11-10

申请号：EP07838439.3

申请日：2007-09-18

申请人： Thomson Licensing

发明人： LU, Xiaoan ,  ZHAI, Jiefu ,  GOMILA, Cristina

IPC分类号： G06T7/40

CPC分类号： G06T7/41

摘要： A spatial activity metric for characterizing an image is established, typically based one of the image variance, image gradient or DCT coefficients. The spatial activity metric is then reduced by the amount of the estimated noise in the image so that upon the spatial activity metric in connection with spatial masking, the likelihood of unmasked distortion caused by the presence of noise, such as film grain will be reduced. The effectiveness of such a spatial activity metric can be determined by determining similarity of the measures made by the spatial activity metric for regions in the image of similar texture and by determining the difference in the measures made by the spatial activity metric for regions of different texture in the image.

摘要翻译： 通常基于图像方差，图像梯度或DCT系数之一建立用于表征图像的空间活动度量。 然后，空间活动度量减少图像中的估计噪声的量，使得在与空间屏蔽相关的空间活动度量时，由诸如胶片颗粒的噪声的存在引起的未屏蔽失真的可能性将减小。 这种空间活动度量的有效性可以通过确定由类似纹理的图像中的区域的空间活动度量所做出的度量的相似性并且通过确定由不同纹理的区域的空间活动度量所做的度量的差异来确定 在图像中。

公开(公告)号：EP2143278A2

公开(公告)日：2010-01-13

申请号：EP08743214.2

申请日：2008-04-23

申请人： Thomson Licensing

发明人： PANDIT, Purvin, Bibhas ,  YIN, Peng ,  GOMILA, Cristina

IPC分类号： H04N7/26

CPC分类号： H04N19/59 ,  H04N19/105 ,  H04N19/597 ,  H04N19/70

摘要： At least one disclosed method and apparatus relate to inter-view prediction with different resolution reference picture. A particular method includes accessing at least a portion of an encoded picture (614), the encoded picture being from a particular view of multiple views, and the portion being encoded at a particular resolution. The method further includes determining a particular view level based on the particular view (614), determining the particular resolution based on the particular view level (606), and decoding the portion based on the particular resolution (630).

公开(公告)号：EP2127390A2

公开(公告)日：2009-12-02

申请号：EP07867967.7

申请日：2007-12-21

申请人： Thomson Licensing

发明人： DANE, Gokce ,  GOMILA, Cristina

IPC分类号： H04N7/26

CPC分类号： H04N19/119 ,  H04N19/154 ,  H04N19/176 ,  H04N19/18 ,  H04N19/182 ,  H04N19/48 ,  H04N19/86 ,  H04N19/865

摘要： A method is provided for block artifact detection and block artifact determination using multiple features in coded images and video. A method includes identifying (910) a plurality of overlapping blocks in a picture with respect to a current block. Each of the plurality of overlapping blocks covers a portion of the current block and a portion of an adjacent block. The method further includes transforming (920) at least one of the plurality of overlapping blocks into respective coefficients corresponding to at least one of a luminance component and a chrominance component. The method also includes identifying (930) a blockartifact for the at least one of the plurality of overlapping blocks when coefficients corresponding to the at least one of the plurality of overlapping blocks are larger than a predefined value. Pixel domaine blockiness detection is also proposed, also in combination with the above transform domain analysis.

公开(公告)号：EP2123044A1

公开(公告)日：2009-11-25

申请号：EP08713027.4

申请日：2008-01-07

申请人： Thomson Licensing

发明人： LUO, Jiancong ,  ZHU, Li, Hua ,  YIN, Peng ,  GOMILA, Cristina

IPC分类号： H04N7/24

CPC分类号： H04N21/44016 ,  H04N21/23424 ,  H04N21/2662 ,  H04N21/44004 ,  H04N21/440218 ,  H04N21/6336 ,  H04N21/8451

摘要： There are provided methods and apparatus for video stream splicing. An apparatus includes a spliced video stream generator (1600) for creating a spliced video stream using hypothetical reference decoder parameters. Another apparatus includes a spliced video stream generator (1600) for creating a spliced video stream that prevents decoder buffer overflow and underflow conditions relating to the spliced video stream by modifying standard values of at least one hypothetical reference decoder related high level syntax element.

公开(公告)号：EP2082585A2

公开(公告)日：2009-07-29

申请号：EP07852695.1

申请日：2007-10-11

申请人： Thomson Licensing

发明人： HAR-NOY, Shay ,  DIVORRA ESCODA, Oscar ,  PENG, Yin ,  GOMILA, Cristina

IPC分类号： H04N7/50

CPC分类号： H04N19/82 ,  H04N19/105 ,  H04N19/11 ,  H04N19/117 ,  H04N19/137 ,  H04N19/46 ,  H04N19/593 ,  H04N19/61

摘要： There are provided methods and apparatus for video coding using prediction data refinement. An apparatus includes an encoder (300) for encoding an image region of a picture. The encoder (300) has a prediction refinement filter (333) for refining at least one of an intra prediction and an inter prediction for the image region. The prediction refinement filter (333) refines the inter prediction for the image region using at least one of previously decoded data and previously encoded data, the previously decoded data and the previously encoded data corresponding to pixel values in neighboring regions with respect to the image region.