tag:blogger.com,1999:blog-1924948806084793655.post3614425919130964190..comments2023-09-26T11:36:56.423-04:00Comments on Machine Vision 4 Users: Seeing noiseUnknownnoreply@blogger.comBlogger2125tag:blogger.com,1999:blog-1924948806084793655.post-88829184358187330392011-01-07T12:20:40.112-05:002011-01-07T12:20:40.112-05:00Many customers want a black level above zero. Came...Many customers want a black level above zero. Cameras are usually adjusted internally with a small analog offset in the gain stage. With Gain=1x and offset=0 you'll get an average gray value in an 8 bit system typically between 1 and 4. If "black" would be at 0 or 1, you'll clip the random noise under zero. In an application (e.g. fluorescent or astronomy) where a result is build with hundreds of images by adding the content you'll cut image information.Daniel Diezemannhttp://www.ids-imaging.comnoreply@blogger.comtag:blogger.com,1999:blog-1924948806084793655.post-10499770696969780912010-12-28T02:13:57.008-05:002010-12-28T02:13:57.008-05:00True. I always wonder what the point of going to 1...True. I always wonder what the point of going to 10- or 12-bit precision is, knowing that the standard noise level is so high.Vladimír Držíkhttps://www.blogger.com/profile/12257405408489709779noreply@blogger.com