Hi Guys
Ok I am scanning microfilm and mostly the images come out fairly well . There is no issue with warping or skewing. What I do have an issue with is edge detection. Is there a software that detects edges fast and hopefully with command line . Also I have some speckling issues but I am experimenting with cleaning and post processing of that. I uploaded some raw images for everyone to look at.
Thanks Paul
http://s33.postimg.org/d2x5m6zb3/biton0001_B22.png
http://s33.postimg.org/ay7a4maf3/bitonal00045.png
Edge detection microfilm
Moderator: peterZ
-
- Posts: 11
- Joined: 28 Jul 2011, 00:09
- E-book readers owned: Kobo
- Number of books owned: 1200
- Country: Canada
Re: Edge detection microfilm
Imagemagick has a few edge-detector operators. It's command-line (among other things). I like the Canny edge-detector.
Typical usage:
convert SOURCE-IMAGE -canny 5x5 OUTPUT-IMAGE
http://www.imagemagick.org/script/index.php
Typical usage:
convert SOURCE-IMAGE -canny 5x5 OUTPUT-IMAGE
http://www.imagemagick.org/script/index.php
-
- Posts: 388
- Joined: 01 Jun 2014, 17:04
- Number of books owned: 1000
- Country: United States of America
Re: Edge detection microfilm
jera2, great idea. This suggestion made me think about Fred's ImageMagick scripts which use IM to do a number of common tasks. It turns out that 'autotrim' might be a script which would work well for this case:
http://www.fmwconcepts.com/imagemagick/ ... /index.php
-D
http://www.fmwconcepts.com/imagemagick/ ... /index.php
-D