Archived posting to the Leica Users Group, 2004/08/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Peter, You are seeing a normal artifact of scanning in single pass mode. If your scanner allows it, perform a multi pass scan and most of the shadow noise will go away. If your scanner does not allow a multi pass scan then you might try performing two scans with the density shifted so that you can overlay the two images, the noise should tend to cancel out. What your scanner is doing is displaying "darknoise" taking random firings from the CCD when there is no other information to process. Don dorysrus@mindspring.com -----Original Message----- From: lug-bounces+dorysrus=mindspring.com@leica-users.org [mailto:lug-bounces+dorysrus=mindspring.com@leica-users.org] On Behalf Of Peter Klein Sent: Sunday, August 15, 2004 1:41 AM To: lug@leica-users.org; leica@freelists.org Subject: [Leica] Shadow noise in scans Folks: I frequently encounter shadow noise in my scans. I can usually work around it, but I'm wondering if there is something I can do--perhaps while scanning--to minimize it. Have a look at this: http://users.2alpha.com/~pklein/temp/noise.jpg