公开(公告)号：US20050099538A1

公开(公告)日：2005-05-12

申请号：US10834760

申请日：2004-04-28

申请人： G. Wredenhagen ,  Gary Cheng ,  Soo Jang ,  Lance Greggain

发明人： G. Wredenhagen ,  Gary Cheng ,  Soo Jang ,  Lance Greggain

IPC分类号： H04N5/14 ,  H04N5/44 ,  H04N7/01

CPC分类号： H04N5/142 ,  H04N5/144 ,  H04N7/0115 ,  H04N7/012 ,  H04N7/0137 ,  H04N7/0142 ,  H04N19/117 ,  H04N19/139 ,  H04N19/51

摘要： An adaptive filter calculates a target pixel from an interlaced video signal. The video signal comprises a plurality of frames, each of which comprises an even and an odd field. The filter comprises a quantized motion calculator and a filter selector. The quantized motion calculator estimates an amount of motion about the target pixel. The filter selector selects a filter in accordance with the estimated amount of motion. The filter applies a first weighting factor to a plurality of current field pixels and a second weighting factor to a plurality of previous field pixels for creating the target pixel.

摘要翻译： 自适应滤波器从隔行视频信号计算目标像素。 视频信号包括多个帧，每个帧包括偶数和奇数场。 滤波器包括量化运动计算器和滤波器选择器。 量化运动计算器估计关于目标像素的运动量。 滤波器选择器根据估计的运动量选择滤波器。 滤波器对多个当前场像素施加第一加权因子，并将第二加权因子应用于多个先前场像素，以创建目标像素。

公开(公告)号：US20050243205A1

公开(公告)日：2005-11-03

申请号：US11131098

申请日：2005-05-16

申请人： G. Wredenhagen ,  Andrew Elias

发明人： G. Wredenhagen ,  Andrew Elias

IPC分类号： G06T5/00 ,  G06T7/40 ,  H04N5/208 ,  H04N5/21 ,  H04N5/213 ,  H04N5/217 ,  H04N7/26 ,  H04N11/20

CPC分类号： G06T5/002 ,  G06T5/20 ,  G06T7/40 ,  G06T2207/10016 ,  G06T2207/20192 ,  H04N5/208 ,  H04N5/21

摘要： A method is provided for selecting a filter for interpolating a target pixel for reducing noise in an image. The method comprises the following steps. A plurality of pixels along a predetermined contour is compared with a plurality of predefined patterns. The patterns represent visually significant patterns possible along said contour. A filter is selected from a predefined set of filters in accordance with the results of the comparison.