DTP


 
Lively discussions on the graphic arts and publishing — in print or on the web


Go Back   Desktop Publishing Forum > General Discussions > Images

 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 03-08-2006, 08:50 AM   #1
ktinkel
Founding Sysop
 
ktinkel's Avatar
 
Join Date: Oct 2004
Location: In Connecticut, on the Housatonic River near its mouth at Long Island Sound.
Posts: 11,189
Default converting color scan to B&W

I have a bunch of line-art pages (drawings, typewriting, handwriting) that were offset printed in black ink on a textured pumpkin-colored stock.

I need to scan them and turn them into B&W (for the web; but who knows about the future and these are somewhat fragile, so I am working large), but I’m not positive how to proceed.

So far I tried this:
  • scan at 300dpi in 24bit color (and save it)
  • convert to greyscale in Photoshop (and save it)
  • use Levels to make the background white
  • change Mode to bitmap using Threshold 50%
That leaves me with a huge and bumpy image; reducing it to its original physical size should fix the bumps, but I wonder whether I should have adjusted the size when I changed mode. Or whether I am going about this all wrong.

This was an easy one: some large-ish handwriting and a big drawing. Some of the others are typescript (some with ribbon typewriter, even); one has better typewriting (electric typewriter) but it has been reduced to 50%.

Any advice before I get in over my head? Thanks.

   
__________________
[SIZE=2][COLOR=LemonChiffon]::[/COLOR][/SIZE]
[SIGPIC][/SIGPIC]
ktinkel is offline   Reply With Quote
 

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Balancing scan size/resolution readville Images 7 09-20-2006 01:04 PM
Scan x2 + composite = $$? ElyseC Images 4 02-19-2006 10:16 AM
Scan to print Mike General Publishing Topics 53 11-14-2005 02:53 PM
Converting GIF to ICO RJ Emery Images 4 07-21-2005 07:48 PM
Scan/OCR book pages to text file vs. retyping? marlene General Publishing Topics 21 04-07-2005 01:33 PM


All times are GMT -8. The time now is 10:41 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Contents copyright 2004–2014 Desktop Publishing Forum and its members.