公开(公告)号：WO0247382A3

公开(公告)日：2002-09-12

申请号：PCT/EP0113745

申请日：2001-11-23

Applicant: KONINKL PHILIPS ELECTRONICS NV

Inventor： DANTWALA NEHAL R ,  OJO OLUKAYODE A

IPC: H04N7/01 ,  H04N7/26 ,  H04N7/46 ,  H04N7/00 ,  H04N5/44 ,  H04N7/36

CPC classification number: H04N7/014 ,  H04N7/0112 ,  H04N7/0125 ,  H04N19/105 ,  H04N19/112 ,  H04N19/137 ,  H04N19/53 ,  H04N19/59

Abstract: High definition video signals are pre-filtered and down-sampled by a video converter system to standard definition picture sizes. Standard definition motion estimators employed for field rate up-conversion are then utilized to estimate motion vectors for the standard definition pictures. The resulting motion vectors are scaled and post-processed for motion smoothness for use in motion compensated up-conversion of the field rate for the high definition pictures. The associated memory size and bandwidth requirements and overall cost render consumer electronics implementations for motion compensated field rate up-conversion of film material to high definition video commercially viable while preserving picture quality.

Abstract translation: 高分辨率视频信号通过视频转换器系统进行预滤波和下采样，达到标准清晰度图像尺寸。 然后使用用于场速上变换的标准清晰度运动估计器来估计标准清晰度图像的运动矢量。 所得到的运动矢量被缩放和后处理用于运动平滑度，以用于用于高分辨率图像的场速率的运动补偿上变换。 相关联的存储器大小和带宽要求以及整体成本使消费者电子产品实现用于电影材料的运动补偿场速率上转换到商业上可行的高清晰度视频，同时保持画面质量。

公开(公告)号：WO0249365A2

公开(公告)日：2002-06-20

申请号：PCT/IB0102513

申请日：2001-12-11

Applicant: KONINKL PHILIPS ELECTRONICS NV

Inventor： DANTWALA NEHAL R

IPC: H04N7/01 ,  H04N7/26 ,  H04N7/46

CPC classification number: H04N19/577 ,  H04N19/105 ,  H04N19/112 ,  H04N19/137 ,  H04N19/51 ,  H04N19/587

Abstract: For use in a video image upconversion unit of the type that uses motion compensation to generate an interpolated field using motion vectors, an improved method of motion compensation is disclosed. The method performs motion compensation on a pixel and determines whether a motion vector assigned to the pixel is correct or incorrect. If the motion vector is incorrect, the method sets the value of the pixel to a previously recorded pixel value. The previously recorded pixel value is obtained by calculating for the pixel the difference between the value of a corresponding motion compensated pixel from a previous frame and the value of a corresponding motion compensated pixel from a next field. The difference is then compared with a threshold value. If the difference is less than the threshold value, then the value of the pixel is set equal to the average of the value of the corresponding motion compensated pixel from the previous frame and the value of the corresponding motion compensated pixel from the next field.

Abstract translation: 为了在使用运动补偿的类型的视频图像上变频单元中使用以使用运动矢量产生内插场，公开了一种改进的运动补偿方法。 该方法对像素执行运动补偿并确定分配给该像素的运动矢量是正确还是不正确。 如果运动矢量不正确，则该方法将该像素的值设置为先前记录的像素值。 先前记录的像素值是通过对该像素计算来自前一帧的相应运动补偿像素的值与来自下一场的对应运动补偿像素的值之间的差来获得的。 然后将差值与阈值进行比较。 如果差值小于阈值，则将像素的值设置为等于来自前一帧的相应运动补偿像素的值的平均值和来自下一场的相应运动补偿像素的值。