发明名称 |
Device and method for estimating the noise of a video signal |
摘要 |
The disclosure relates to a device and a method for estimating the noise level of a video signal representing image sequences. The device comprises a movement compensated interpolation means, a recursive filter designed to receive on a first input the output of the recursive filter movement compensated by the movement compensated interpolation means and on a second input the video signal, means of calculating the difference between the video signal and the output of the recursive filter movement compensated by the movement compensated interpolation means. In accordance with the principles of the invention, the device comprises means of estimating the noise level of the video signal according to the difference and a maximum threshold delimiting this difference.
|
申请公布号 |
US2005128356(A1) |
申请公布日期 |
2005.06.16 |
申请号 |
US20040964088 |
申请日期 |
2004.10.13 |
申请人 |
BABONNEAU JEAN-YVES;DIEUMEGARD JACKY;MEUR OLIVIER L. |
发明人 |
BABONNEAU JEAN-YVES;DIEUMEGARD JACKY;MEUR OLIVIER L. |
分类号 |
H04N5/217;H04N5/21;H04N17/00;H04N17/04;(IPC1-7):H04N5/217 |
主分类号 |
H04N5/217 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|