公开(公告)号：WO2005057936A1

公开(公告)日：2005-06-23

申请号：PCT/US2004/041164

申请日：2004-12-01

Applicant: THOMSON LICENSING S.A. ,  COOPER, Jeffrey, Allen ,  BOYCE, Jill, MacDonald ,  TOURAPIS, Alexandros ,  GOMILA, Cristina ,  LLACH, Joan ,  YIN, Peng

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

IPC: H04N7/26

CPC classification number: G06T11/00 ,  G06T5/002 ,  G06T2207/20021 ,  G06T2207/20204 ,  H04N5/262 ,  H04N19/117 ,  H04N19/136 ,  H04N19/176 ,  H04N19/46 ,  H04N19/85

Abstract: Individual pixels in an image block undergo blending with film grain from a film grain block randomly selected from among a pool (18) 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 (32) clips the individual pixels prior to display. The pool(18) 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.

Abstract translation: 根据图像块的亮度特性，图像块中的各个像素经历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的胶片颗粒混合。 在混合之前，所选择的胶片颗粒块通过去块过滤器（28）进行解块。 在混合之后，剪辑器（32）在显示之前剪切各个像素。 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产生胶片颗粒块的池（18）。

公开(公告)号：WO2005039189A1

公开(公告)日：2005-04-28

申请号：PCT/US2004/033713

申请日：2004-10-12

Applicant: THOMSON LICENSING S.A. ,  BOYCE, Jill, Mac Donald ,  GOMILA, Cristina ,  LLACH, Joan ,  TOURAPIS, Alexandros ,  COOPER, Jeffrey, Allen ,  YIN, Peng

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

IPC: H04N7/26

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

Abstract: 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.

Abstract translation: 图像中的胶片颗粒的模拟利用包含在补充增强信息（SEI）消息中的参数，该信息伴随着传输时的图像。 SEI消息指定胶片模拟参数，如电影模拟模型，混合模式和颜色空间。

公开(公告)号：WO2005039188A1

公开(公告)日：2005-04-28

申请号：PCT/US2004/033712

申请日：2004-10-12

Applicant: THOMSON LICENSING S.A. ,  BOYCE, Jill, Mac Donald ,  GOMILA, Cristina ,  LLACH, Joan ,  TOURAPIS, Alexandros ,  COOPER, Jeffrey, Allen ,  YIN, Peng

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

IPC: H04N7/26

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

Abstract: The addition of comfort noise to an image serves to hide compression artifacts. To facilitate comfort noise addition, supplemental information accompanying a video image contains at least one parameter that specifies an attribute regarding comfort noise. Typically, the supplemental information includes parameters that function to turn the comfort noise on and off, as well as to indicate the level of noise to add, based on the expected level of compression artifacts.

Abstract translation: 向图像添加舒适噪声可以隐藏压缩伪影。 为了促进舒适噪声添加，附带视频图像的补充信息包含至少一个指定关于舒适噪声的属性的参数。 通常，补充信息包括用于打开和关闭舒适噪声的参数，以及基于预期的压缩伪像水平来指示要添加的噪声的水平。

公开(公告)号：WO2005034517A1

公开(公告)日：2005-04-14

申请号：PCT/US2004/028650

申请日：2004-09-02

Applicant: THOMSON LICENSING S.A. ,  TOURAPIS, Alexandros ,  BOYCE, Jill, MacDonald

Inventor： TOURAPIS, Alexandros ,  BOYCE, Jill, MacDonald

IPC: H04N7/26

CPC classification number: H04N19/85 ,  H04N19/46 ,  H04N19/61 ,  H04N19/82

Abstract: 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.

Abstract translation: 提供视频编码器（300）和对应方法（700），用于使用来自参考图像的预测对输入图像或图像块进行编码，其中编码器（300）包括用于存储先前编码的图像缓冲器（374） 图像和与图像缓冲器进行信号通信的参考处理单元（376），用于从先前编码的图像生成仅参考图像; 并且相应的方法（700）包括接收（712）基本上未压缩的图像块，过滤（714）先前编码的图像以创建自适应参考，运动补偿（718）自适应参考，减去（722）运动补偿自适应参考 并且对（724）基本上未压缩的图像块和运动补偿的自适应参考之间的差进行编码（724）。 还公开了视频解码器（400）和相应的方法（800）。

公开(公告)号：WO2005022923A2

公开(公告)日：2005-03-10

申请号：PCT/US2004/027432

申请日：2004-08-24

Applicant: THOMSON LICENSING S.A. ,  TOURAPIS, Alexandros ,  BOYCE, Jill, MacDonald

Inventor： TOURAPIS, Alexandros ,  BOYCE, Jill, MacDonald

IPC: H04N7/36

CPC classification number: H04N19/573 ,  H04N19/105 ,  H04N19/172 ,  H04N19/46 ,  H04N19/61

Abstract: A method (200) 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 (294) 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 (300) 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 (700) 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 (700) can be decoded by decoders of the related art.

Abstract translation: （200），用于最小化和优化要用于当前图片或像素区域（例如，视频对象）的（前向或后向）帧间编码的有效参考图片的列表， 在当前图片中。 基于与像素数据有关的一个或多个决定以及当前图片与一个或多个参考图片之间的移动，将列表中的活动参考图片的数量设置为等于一（294）。 否则，基于与像素数据有关的一个或多个其他决定和当前图片与一个或多个参考图片之间的移动，使列表中的活动参考图片（300）的数量最小化。 基于第一参考图片列表中的参考图片的利用率，最小化第二参考图片列表中的活动参考图片的数目。 视频编码器（700）处理表示由传统市售摄像机产生的二维视频图像的数据。 视频编码器适用于确定，选择并最小化要用于对当前图片进行编码的有效参考图片的数量。 由编码器（700）发送的比特流可以由相关技术的解码器解码。

公开(公告)号：WO2005022919A1

公开(公告)日：2005-03-10

申请号：PCT/US2004/027397

申请日：2004-08-24

Applicant: THOMSON LICENSING S.A. ,  TOURAPIS, Alexandros ,  BOYCE, Jill, MacDonald ,  YIN, Peng

Inventor： TOURAPIS, Alexandros ,  BOYCE, Jill, MacDonald ,  YIN, Peng

IPC: H04N7/26

CPC classification number: H04N19/577 ,  H04N19/107 ,  H04N19/109 ,  H04N19/11 ,  H04N19/119 ,  H04N19/136 ,  H04N19/17 ,  H04N19/174 ,  H04N19/176 ,  H04N19/44 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86 ,  H04N19/895

Abstract: A hybrid intra-inter bi-predictive (or multi-predictive) coding mode allows both intraframe (intra) (301 in FIG. 5) and interframe (inter) (302 in FIG. 5) predictions to be combined together for hybrid-encoding a current macroblock or a subblock (310 in FIG. 5). Bi-prediction may be used also in I-pictures, combining two intra predictions that use two different intra prediction directions. A video encoder (700) 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 select, for coding a current macroblock, between an intra encoding mode, an P-frame inter encoding mode, a B-frame bi-predictive inter mode, and a hybrid intra-inter bi-predictive encoding mode. A video decoder (800) receives and decodes a data stream that may contain a block/macroblock encoded in accordance with the hybrid intra-inter bi-predictive encoding mode.

Abstract translation: 混合帧内双向预测（或多预测）编码模式允许将帧内（帧内）（图5中的301）和帧间（帧间）（图5中的302）预测组合在一起用于混合编码 当前宏块或子块（图5中的310）。 双预测也可以用在I图像中，组合使用两个不同帧内预测方向的两个帧内预测。 视频编码器（700）处理表示由传统市售摄像机产生的二维视频图像的数据。 视频编码器适于在帧内编码模式，P帧编码模式，B帧双预测帧间模式和混合帧内双向预测编码模式之间选择用于对当前宏块进行编码。 视频解码器（800）接收并解码可以包含根据混合帧内双向预测编码模式编码的块/宏块的数据流。

公开(公告)号：WO2004114667A1

公开(公告)日：2004-12-29

申请号：PCT/US2004/018763

申请日：2004-06-15

Applicant: THOMSON LICENSING S.A. ,  BOYCE, Jill, MacDonald ,  TOURAPIS, Alexandros, Michael ,  COOPER, Jeffrey, Allen

Inventor： BOYCE, Jill, MacDonald ,  TOURAPIS, Alexandros, Michael ,  COOPER, Jeffrey, Allen

IPC: H04N7/24

CPC classification number: H04N19/44 ,  H04N5/4401 ,  H04N5/50 ,  H04N19/00 ,  H04N19/105 ,  H04N19/107 ,  H04N19/132 ,  H04N19/159 ,  H04N19/162 ,  H04N19/172 ,  H04N19/174 ,  H04N19/33 ,  H04N19/39 ,  H04N19/527 ,  H04N19/573 ,  H04N19/58 ,  H04N19/587 ,  H04N19/59 ,  H04N19/61 ,  H04N19/70 ,  H04N19/86 ,  H04N21/234363 ,  H04N21/234381 ,  H04N21/23439 ,  H04N21/2365 ,  H04N21/2662 ,  H04N21/4347 ,  H04N21/4384 ,  H04N21/440263 ,  H04N21/440281 ,  H04N21/4621 ,  H04N21/8451

Abstract: A video encoder (100, 300, 500) and corresponding method (800) are described for enabling fast channel change of compressed video, where a video encoder (100, 300, 500) for receiving input pictures and providing compressed stream data includes a normal encoding portion (130, 330, 530) for receiving input pictures and providing normal stream data, a lower-quality encoding portion (140, 340, 540) for receiving input pictures and providing channel change stream data, and a multiplexor (150, 350, 550) in signal communication with each of the normal and lower-quality portions for receiving and combining the normal and channel change data streams.

Abstract translation: 描述了用于实现压缩视频的快速频道改变的视频编码器（100,300,500）和相应的方法（800），其中用于接收输入图像并提供压缩流数据的视频编码器（100,300,500）包括正常 用于接收输入图像并提供正常流数据的编码部分（130,330,530），用于接收输入图像并提供频道改变流数据的较低质量编码部分（140,340,540），以及多路复用器 ，550）与用于接收和组合正常和频道改变数据流的每个正常和低质量部分进行信号通信。

公开(公告)号：US20110254921A1

公开(公告)日：2011-10-20

申请号：US13142035

申请日：2009-12-22

Applicant: Peshala V. Pahalawatta ,  Tourapis Alexandros ,  Leontaris Athanasios

Inventor： Peshala V. Pahalawatta ,  Tourapis Alexandros ,  Leontaris Athanasios

IPC: H04N13/00

CPC classification number: H04N13/139 ,  H04N13/156 ,  H04N13/161 ,  H04N13/194 ,  H04N19/597

Abstract: Method for reconstructing interleaved views of a 3D image comprising the steps of: receiving interleaved views of a 3D image, de-interleaving said interleaved views into a first view and a second view, each de-interleaved view comprising missing pixels, at each pixel location determining an amount of disparity between said first and second views, for each view interpolating each missing pixel based on the amount of disparity determined at the associated pixel location, wherein when the determined disparity is above a predetermined disparity threshold, the missing pixel value is interpolated from the data of the view to be interpolated only (i.e. the view comprising said missing pixel value), and when the determined disparity is at or below said predetermined disparity threshold, the missing pixel value is interpolated from the data of both views.

Abstract translation: 用于重建3D图像的交织视图的方法，包括以下步骤：在每个像素位置处接收3D图像的交织视图，将所述交织视图解交织成第一视图和第二视图，每个解交织视图包括缺失像素 基于在相关联的像素位置处确定的视差的量来确定内插每个丢失像素的每个视图的所述第一和第二视图之间的差异量，其中当所确定的视差高于预定视差阈值时，内插丢失像素值 从仅被内插的视图的数据（即，包括所述丢失像素值的视图），并且当所确定的视差处于或低于所述预定视差阈值时，从两个视图的数据插值丢失的像素值。

公开(公告)号：WO2012122426A1

公开(公告)日：2012-09-13

申请号：PCT/US2012/028371

申请日：2012-03-08

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  TOURAPIS, Alexandros

Inventor： TOURAPIS, Alexandros

IPC: H04N7/26

CPC classification number: H04N19/36 ,  H04N19/103 ,  H04N19/136 ,  H04N19/147 ,  H04N19/17 ,  H04N19/172 ,  H04N19/174 ,  H04N19/46

Abstract: Methods for scalable video coding are described. Such methods can be used to deliver video contents in Low Dynamic Range (LDR) and/or one color format and then converting the video contents to High Dynamic Range (HDR) and/or a different color format, respectively, while using reference processing.

Abstract translation: 描述了可缩放视频编码的方法。 这样的方法可以用于在低动态范围（LDR）和/或一种颜色格式中传送视频内容，然后在使用参考处理时分别将视频内容转换为高动态范围（HDR）和/或不同的颜色格式。

公开(公告)号：WO2012115973A1

公开(公告)日：2012-08-30

申请号：PCT/US2012/025951

申请日：2012-02-21

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  TOURAPIS, Alexandros ,  HE, Yuwen

Inventor： TOURAPIS, Alexandros ,  HE, Yuwen

IPC: H04N7/26

CPC classification number: H04N19/00569 ,  H04N19/42 ,  H04N19/597 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86

Abstract: Floating point video coding is described. In particular, a video encoder/decoder and methods for floating point video coding are discussed. Floating point video coding can be used in the video encoder and decoder to support video content, such as HDR content. Specifically, a video codec structure such as H.264/AVC can be modified in order to support floating point video coding. Within any component of a codec system, some operations can be performed at floating point precision whereas other operations can be performed at fixed point precision.

Abstract translation: 描述浮点视频编码。 特别地，讨论了用于浮点视频编码的视频编码器/解码器和方法。 可以在视频编码器和解码器中使用浮点视频编码来支持视频内容，如HDR内容。 具体地，可以修改诸如H.264 / AVC的视频编解码结构，以支持浮点视频编码。 在编解码系统的任何组件中，可以以浮点精度执行一些操作，而可以以固定点精度执行其他操作。