Table of Contents
Texture
Texture causes glare and shadows from the light in the scanner, reducing scan quality.
Scanning with a CIS scanner
If you are using a CIS scanner, lightly textured prints should be scanned twice, once upside up (0 degrees) and then again upside down (180 degrees), then the two scans can be combined in Photoshop using File > scripts > statistics > “Choose Stack Mode: Mean”. Add the two scans to the “Source Files” box, make sure “Attempt to Automatically Align Source Images” is checked, and click Ok. This combines the two prints into two layers with the top layer set at 50% transparency.
CCD scanners cannot be used with this method as they slightly distort scanned images, making them impossible to line up perfectly.
Using a CIS scanner, heavily textured prints should be scanned four times (0, 90, 180, 270 degrees) and the four scans combined using the “Median” stack mode.
Here's an example before-and-after using this method:
Inspiration for this technique was from the following articles:
- page 110 of “Digital Restoration From Start to Finish” by Ctein
Scanning With a Scanner That Supports "Show Texture"
A scanner that supports VueScan's Show Texture1) option automatically removes texture when this option is turned off.
Example 1, Epson V370 vs. Epson V600:
Example 2, “Show Texture” turned on vs. off:



