----- Original Message ----- From: "Doug Franklin" <[EMAIL PROTECTED]> To: "PDML" <[EMAIL PROTECTED]> Sent: Tuesday, March 26, 2002 6:30 PM Subject: (LONG) High Resolution Scanning
[snipped] > OPEN QUESTIONS > -------------- > 1) Does anyone have suggestions for "PhotoShopping" away the artifacts > of "grain aliasing"? In my experiments, it looks like a Median Blur > with a radius of about four pixels does a decent job of smoothing > things out, but doesn't get rid of the "speckles". It does, though, > make the image easier for USM to handle. It helps reduce emphasizing > the speckles, and it seems to give USM data it "likes better" for the > actual edges in the image. I'm really wondering if there's a way to > clone the area into a new layer, then combine the layer with the > original layer to get rid of them or knock down their intensity or > something. Conver to LAB, then use the Median filter in the A and B channels, where there is significantly less detail. Then apply "dust and scratches" to the L channel. > 2) Does anyone know of any resources on scanning and printing accuracy > in relation to the solidity of the mechanical support of the scanner or > printer. IOW, we all know about blurry pictures and wobbly tripods ... > but how do wobbly tables play into the accuracy we're getting from our > scanners and printers? Less of a problem with printers than for scanners I would think, but I doubt that anyone uses a wobbly table for either. Maris - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
