公开(公告)号：EP1289309B1

公开(公告)日：2010-04-21

申请号：EP01830562.3

申请日：2001-08-31

Applicant: STMicroelectronics Srl

Inventor： Bosco, Angelo ,  Mancuso, Massimo

IPC: H04N9/04 ,  G06T5/20

CPC classification number: H04N5/217 ,  G06T3/4015 ,  G06T5/002 ,  G06T5/20 ,  G06T2207/10024 ,  G06T2207/20012 ,  G06T2207/20192 ,  H04N9/045

Abstract: A method of filtering and an image filter (10) is disclosed. The filter is provided for a digital camera including image sensors sensitive to light, a color filter placed over sensitive elements of the sensors and patterned according to a Bayer mosaic pattern layout and an interpolation algorithm joining together the digital information provided by differently colored adjacent pixels in said Bayer pattern. The filter (10) is adaptive and includes a noise level computation block (26) for operating directly on a said Bayer pattern data set of for each color channel thus removing noise while simultaneously preserving picture detail.