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.

公开(公告)号：EP1673943A1

公开(公告)日：2006-06-28

申请号：EP04794940.9

申请日：2004-10-12

申请人： Thomson Licensing, S.A.

发明人： BOYCE, Jill, Mac Donald ,  GOMILA, Cristina ,  LLACH, Joan ,  TOURAPIS, Alexandros ,  COOPER, Jeffrey, Allen ,  YIN, Peng

IPC分类号： H04N7/26

CPC分类号： H04N5/262 ,  G06T5/002 ,  G06T5/10 ,  G06T2207/20021 ,  G06T2207/20052 ,  G06T2207/20204 ,  H04N19/117 ,  H04N19/136 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61 ,  H04N19/85

摘要： The simulation of film grain in an image makes use of parameters contained in a Supplemental Enhancement Information (SEI) message that accompanies the image upon transmission. The SEI message specifies film grain simulation parameters such as the film simulation model, the blending mode, and color space.

公开(公告)号：EP1661409A2

公开(公告)日：2006-05-31

申请号：EP04782008.9

申请日：2004-08-24

申请人： Thomson Licensing S.A.

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

IPC分类号： H04N7/36

CPC分类号： H04N19/573 ,  H04N19/105 ,  H04N19/172 ,  H04N19/46 ,  H04N19/61

摘要： A method for minimizing and optimizing a list of active reference pictures to be used for (forward or backward) inter coding of a current picture, or of a pixel region (e.g., video object) within the current picture. Setting the number of active reference pictures in a list equal to one based upon one or more decisions related to the pixel data and movement between the current picture and one or more reference pictures. Otherwise, minimizing the number of active reference pictures in the list based upon one or more other decisions related to the pixel data and movement between the current picture and one or more reference pictures. Minimizing the number of active reference pictures in a second reference picture list based upon the utilization of reference pictures in the first reference picture list. A video encoder processes data representing a two-dimensional video image which has been produced by a conventional commercially available video camera. The video encoder is adapted to determine, select, and to minimize the number of active reference pictures to be used to inter code a current picture. The bit stream transmitted by the encoder can be decoded by decoders of the related art.

摘要翻译： 用于（向前或向后）间当前画面的当前画面内编码，或像素区域的（例如，视频对象）。一种用于最小化和优化的活性参考图片列表的方法。 设置在等于一个基于与当前图像和一个或多个参考图片之间的像素数据和运动的一个或多个决定的清单的活性参考图片的数目。 否则，在最小化基于与当前图像和一个或多个参考图片之间的像素数据和运动的一个或多个其他决定列表的活性参考图片的数目。 最小化基于的参考图片的第一参考图片列表的利用第二参考图片列表的活性参考图片的数目。 的视频编码器处理的数据表示已经通过一个常规的可商购的视频摄像机产生的二维视频图像。 视频编码器是angepasst确定性矿，选择和尽量减少使用的活性参考图片的数目，以帧间编码的当前图片。 由编码器mitted位流反式可以通过现有技术的解码器解码。

公开(公告)号：EP1690423A1

公开(公告)日：2006-08-16

申请号：EP04813479.5

申请日：2004-12-01

申请人： Thomson Licensing S.A.

发明人： COOPER, Jeffrey, Allen ,  BOYCE, Jill, MacDonald ,  TOURAPIS, Alexandros ,  GOMILA, Cristina ,  LLACH, Joan ,  YIN, Peng

IPC分类号： H04N7/26 ,  H04N5/262

摘要： Individual pixels in an image block undergo blending with film grain from a film grain block randomly selected from among a pool of previously established film grain blocks in accordance with a luma characteristic of the image block. Prior to blending, the selected film grain block undergoes deblocking by a deblocking filter ( 28 ). Following blending, a clipper clips the individual pixels prior to display. The pool of film grain blocks is created by scaling a set of film grain patterns in accordance with at least one parameter of a film grain information message that accompanies the image block.

摘要翻译： 根据图像块的亮度特性，图像块中的各个像素与从先前建立的胶片颗粒块的池（18）中随机选择的胶片颗粒块进行混合。 在混合之前，选定的胶片颗粒块通过去块滤波器（28）进行去块。 在混合之后，剪辑器（32）在显示之前剪切单个像素。 通过根据伴随图像块的胶片颗粒信息消息的至少一个参数缩放一组胶片颗粒图案来创建胶片颗粒块的池（18）。