hello

I scan at TIF 600dpi greyscale in my scanner

as you can see in this screenshot, the scanner somehow produces images with some marks around the characters, I don't know if glossy paper is responsible for this (the marks look like reflections) or the scanner or something else

this is the crop of a scanned page:

this is the same crop but with lowered brightness and contrast in photoshop that makes those marks much more visible:

the marks around the characters cause problems to the OCR program and this reports some characters as 'uncertain characters' or recognizes them erroneously

do you know what causes this and if there is a way to fix it

thanks

I would look for a better OCR program, but I can´t help you with it. It´s neither a hardware flaw nor do I think it´s glossy paper. What OCR software are you using and can you give us the model number of the scanner please.

I use Abbyy Finereader Pro 9 and Plustek Opticbook 3600

Well, I downloaded that image and adjusted the brightness and contrast with Microsoft Office Picture Manager and then converted it to black and white

with Paint. and it came out looking good.

Or here is an article on how to clean scanned B+W images with photo shop.

http://www.associatedcontent.com/article/7...hop.html?cat=15

Edited September 29, 200817 yr by RJM