公开(公告)号：WO2006090113A3

公开(公告)日：2007-01-18

申请号：PCT/GB2006000495

申请日：2006-02-10

Applicant: IMAGINATION TECH LTD ,  MORPHET STEPHEN

Inventor： MORPHET STEPHEN

IPC: H04N5/14

CPC classification number: H04N5/142 ,  G06T5/003 ,  G06T7/12 ,  G06T2207/10016 ,  G06T2207/20192

Abstract: A method for enhancing an edge transition in a video signal comprising the steps of receiving a video signal including an edge transition, generating a correction signal for the edge transition, applying the correction signal to the video signal to produce a corrected signal and restricting the amplitude of the corrected signal to extend between extended maximum and minimum amplitude limits in dependence on the measured maximum and minimum amplitudes of a predefined pattern of pixels adjacent to the edge transition.

Abstract translation: 一种用于增强视频信号中的边缘转换的方法，包括以下步骤：接收包括边缘转换的视频信号，产生用于边缘转换的校正信号，将校正信号施加到视频信号以产生校正信号并限制振幅 校正信号在扩展的最大和最小幅度极限之间延伸，依赖于与边缘过渡相邻的预定义像素图形的测量的最大和最小幅度。

公开(公告)号：WO2006090113A2

公开(公告)日：2006-08-31

申请号：PCT/GB2006/000495

申请日：2006-02-10

Applicant: IMAGINATION TECHNOLOGIES LIMITED ,  MORPHET, Stephen

Inventor： MORPHET, Stephen

IPC: H04N5/14

CPC classification number: H04N5/142 ,  G06T5/003 ,  G06T7/12 ,  G06T2207/10016 ,  G06T2207/20192

Abstract: A method for enhancing an edge transition in a video signal comprising the steps of receiving a video signal including an edge transition, generating a correction signal for the edge transition, applying the correction signal to the video signal to produce a corrected signal and restricting the amplitude of the corrected signal to extend between extended maximum and minimum amplitude limits in dependence on the measured maximum and minimum amplitudes of a predefined pattern of pixels adjacent to the edge transition.

Abstract translation: 一种用于增强视频信号中的边缘转换的方法，包括以下步骤：接收包括边缘转换的视频信号，产生用于边缘转换的校正信号，将校正信号施加到视频信号以产生校正信号并限制幅度 校正信号在扩展的最大和最小幅度极限之间延伸，这取决于与边缘过渡相邻的预定义像素图形的测量的最大和最小幅度。

公开(公告)号：WO2011135296A1

公开(公告)日：2011-11-03

申请号：PCT/GB2011/000650

申请日：2011-04-27

Applicant: IMAGINATION TECHNOLOGIES LIMITED ,  FISHWICK, Steven ,  MORPHET, Stephen

Inventor： FISHWICK, Steven ,  MORPHET, Stephen

IPC: H04N7/01

CPC classification number: H04N7/014 ,  H04N7/0127

Abstract: A method and apparatus are provided for motion compensated video interpolation. Each field or frame in a sequence of video images is subdivided into a plurality of blocks and a motion vector field is derived using block matching for a current video field using data matched to a previous video field or frame. A first time instance is determined at which an interpolated block is to be displayed and a second time instance is determined at which a corresponding interpolated block is to be created. Video data for each block is interpolated at its second time instance for each block and is then output for display at the first time instance.

Abstract translation: 提供了一种用于运动补偿视频插值的方法和装置。 视频图像序列中的每个场或帧被细分为多个块，并且使用与先前视频场或帧匹配的数据对当前视频场使用块匹配导出运动矢量场。 确定要显示内插块的第一时间实例，并且确定要在哪个对应的内插块被创建的第二时间实例。 每个块的视频数据在其针对每个块的第二时间实例被插值，然后被输出以在第一时间实例显示。

公开(公告)号：WO2011104498A1

公开(公告)日：2011-09-01

申请号：PCT/GB2011/000228

申请日：2011-02-18

Applicant: IMAGINATION TECHNOLOGIES LIMITED ,  MORPHET, Stephen ,  FISHWICK, Stephen

Inventor： MORPHET, Stephen ,  FISHWICK, Stephen

IPC: H04N5/14 ,  H04N7/26

CPC classification number: H04N5/145 ,  G06T7/20 ,  G06T7/223 ,  G06T2207/30244 ,  H04N19/51 ,  H04N19/527

Abstract: A method and apparatus are provided for motion estimation in a sequence of images. One or more motion vectors representing movement of a camera or viewer position or direction are determined between each pair of fields or frames in the sequence of images. A set of candidate motion vectors is then determined for deriving positions of objects in a field or frame from the positions of objects in a previous field or frame. This set of candidate motion vectors is adjusted using the motion vectors representing movement of camera or viewer position and thus a set of motion vectors is derived for a sequence of images using the adjusted set of candidate motion vectors.

Abstract translation: 提供了一种用于图像序列中的运动估计的方法和装置。 在图像序列中的每对场或帧之间确定表示相机或观看者位置或方向的移动的一个或多个运动矢量。 然后确定一组候选运动矢量，用于从先前场或帧中的对象的位置导出场或帧中的对象的位置。 使用表示相机或观看者位置的移动的运动矢量来调整该组候选运动矢量，并且因此使用经调整的候选运动矢量集合对于一系列图像导出一组运动矢量。

公开(公告)号：WO2010122301A1

公开(公告)日：2010-10-28

申请号：PCT/GB2010/000803

申请日：2010-04-22

Applicant: IMAGINATION TECHNOLOGIES LIMITED ,  FISHWICK, Steven, John ,  MORPHET, Stephen

Inventor： FISHWICK, Steven, John ,  MORPHET, Stephen

IPC: H04N5/14 ,  G06T7/20

CPC classification number: H04N5/145 ,  G06T7/238 ,  G06T2207/10016

Abstract: There is provided a method and apparatus for motion estimation in a sequence of video images. The method comprises a) subdividing each field or frame of a sequence of video images into a plurality of blocks, b) assigning to each block in each video field or frame a respective set of candidate motion vectors, c) determining for each block in a current video field or frame, which of its respective candidate motion vectors produces a best match to a block in a previous video field or frame, d) forming a motion vector field for the current video field or frame using the thus determined best match vectors for each block, and e) forming a further motion vector field by storing a candidate motion vector derived from the best match vector at a block location offset by a distance derived from the candidate motion vector. Finally, steps a) to e) are repeated for a video field or frame following the current video field or frame. The set of candidate motion vectors assigned at step b) to a block in the following video field or frame includes the candidates stored at that block location at step e) during the current video field or frameThe method enables a block or tile based motion estimator to improve its accuracy by introducing true motion vector candidates derived from the physical behaviour of real world objects.

Abstract translation: 提供了一种用于在视频图像序列中的运动估计的方法和装置。 该方法包括：a）将视频图像序列的每个场或帧细分成多个块，b）向每个视频场或帧中的每个块分配相应的候选运动矢量集合，c）确定一个 当前视频场或帧，其相应的候选运动矢量中的哪一个产生与先前视频场或帧中的块最佳匹配，d）使用由此确定的最佳匹配向量为当前视频场或帧形成运动矢量场， 每个块，以及e）通过将来自最佳匹配矢量的候选运动矢量存储在偏移距候选运动矢量所导出的距离的块位置处，形成另外的运动矢量场。 最后，针对当前视频场或帧之后的视频场或帧重复步骤a）至e）。 在步骤b）中分配给下一视频场或帧中的块的候选运动矢量集合包括当前视频场或帧期间在步骤e）存储在该块位置处的候选。该方法使得基于块或块的运动估计器能够 通过引入从真实世界物体的物理行为导出的真实运动矢量候选来提高其准确度。