发明授权
- 专利标题: Video-apparatus with noise reduction
- 专利标题(中): 具有降噪功能的视频设备
-
申请号: US09808193申请日: 2001-03-14
-
公开(公告)号: US06714258B2公开(公告)日: 2004-03-30
- 发明人: Jeroen Hubert Christoffel Jacobus Stessen , Gerard De Haan , Robert Jan Schutten , Fransiscus Wilhelmus Sijstermans
- 申请人: Jeroen Hubert Christoffel Jacobus Stessen , Gerard De Haan , Robert Jan Schutten , Fransiscus Wilhelmus Sijstermans
- 优先权: EP00200943 20000315
- 主分类号: H04N521
- IPC分类号: H04N521
摘要:
A video apparatus includes a circuit for reducing noise in applied input video signals. The noise reducing circuit is provided with a temporal noise filter (S1, LUT, M), a down-sample unit (D) for obtaining a spatial down-sampling of video signals (Vi) of subsequent pixels, these down-sampled video signals being supplied to the temporal noise filter (S1, LUT, M), and an up-sample unit (U) for generating, in response to noise output signals obtained in the temporal noise filter (S1, LUT, M), noise signals of the pixels, and a subtractor (S2) for subtracting the noise signals from the respective input video signals (Vi).
公开/授权文献
- US20010035916A1 Video-apparatus with noise reduction 公开/授权日:2001-11-01
信息查询