[Coco] [Color Computer] Requesting .pdf help...

[Michael Wayne Harwood]

No - I have been scanning at 24bit color and then using a scripted process
to clean up the images regardless of whether they are color or "black and
white".  The results I have achieved with this method are far better than my
experiences scanning at 8bit color or grayscale.  I use the options in my
scanning software to optimize the images when scanned, so there is not a
whole lot of noise to begin with, although yellowing was an issue at first.


Many of the "black and white" pages have a lot of half-toned areas that look
better scanned at 24bit - I have seen moiré patterns show up at 300ppi 8bit
that don't when scanning at 300ppi 24bit.  The scripts I use to "clean" the
scanned images remove most of the "noise" (page yellowing, paper grain, etc)
picked by the scanning process.  You can assume the images I am attempting
to turn into .pdfs are fairly noise free.


Regards,
Michael Harwood

-----Original Message-----
From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On
Behalf Of Kevin Diggs
Sent: Monday, July 18, 2005 11:16 AM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] [Color Computer] Requesting .pdf help...

Michael Wayne Harwood wrote:
> 
> I am writing this to ask for help in generating .pdf documents from 
> hires images that have a resolution of 2550x3300 at 8bit color (8 1/2 
> x 11 at 300ppi).  As I have been working on this project I have come 
> up with a variety of ways to decrease the size of the finished 
> documents without seriously affecting quality.  My goal is a .pdf 
> document whose size averages out to 160kb or less per page so that I 
> can meet my goal of having the entire Rainbow collection on a single disc.
> 
Are you scanning the black and white pages at 8-bit? I've only had the
scanner for a week but scanning at higher than necessary bit depths seems to
encourage it to pick up and magnify every imperfection on the page. What
percent of the pages are black and white (not grayscale either)?