[projectaon] Re: Chasm of Doom Mines and Vision

  • From: "David Davis" <feline1@xxxxxxxxxxxxx>
  • To: <projectaon@xxxxxxxxxxxxx>
  • Date: Sun, 21 Feb 2010 18:45:35 -0000

Well this is because JPEGs used lossy compression and throw half the info away ;) Admittedly, Simon's workflow here isn't exactly getting all that info back...
----- Original Message ----- From: "Nicholas Jankowski" <jankowskin@xxxxxxxx> 
To: <projectaon@xxxxxxxxxxxxx>
Sent: Sunday, February 21, 2010 6:39 PM
Subject: [projectaon] Re: Chasm of Doom Mines and Vision



also noticed that (at least for the first one) the PNG filesize is
about 4-5x the JPG. Not sure if that is a concern.
On Sun, Feb 21, 2010 at 9:50 AM, David Davis <feline1@xxxxxxxxxxxxx> wrote: 
Looks to me like there was a small but noticeable improvement due to the
JPEG artefact remover
and smoothing, although as you say, if you want a big difference, a re-scan 
would be required.
A tiny tip (although maybe it's just my browser not supporting this): the
JPEG's were interlaced,
so they do that "fading in bit by bit" thing, rather than scrolling in from 
the top as they download
(so impatient readers get to see them ever so slightly quicker) -
the same interlacing feature is available in PNG, it's worthwhile enabling 
it Paint Shop Pro's
Save As... PNG dialogs.

DAVID
----- Original Message ----- From: "Simon Osborne" <outspaced@xxxxxxxxxxxx> 
To: <projectaon@xxxxxxxxxxxxx>
Sent: Sunday, February 21, 2010 11:24 AM
Subject: [projectaon] Re: Chasm of Doom Mines and Vision



On 20/02/2010 19:49, Simon Osborne wrote:


Jon, should I go ahead and commit PNG conversions of the original JPGs
of maps 9-18 to SVN, or are you planning on rescanning them before we
re-release those books?


I've gone ahead and converted all JPG maps -> PNG (expect a fairly large
SVN update today) as well as fixing certain labels (and recording the
relevant errata). Because we may re-scan these maps (Books 9-18) in the
future, we may need to re-alter these labels (Books 10, 12, 14, and 16) so 
I've created a small wiki page as a reminder of what will need fixing:
<http://www.projectaon.org/en/Errata/MapCorrections>

Slightly more technical info: The conversion from JPG -> PNG was
straightforward enough. Ran the images through the JPEG Artefact Remover
facility in Corel Paint Shop Pro 10, then used Edge Preserving Smooth on a 
very low level to just cover over any blotches left behind.

IMO the quality of the converted images, while not as crystal-clear as a
re-scan, are acceptable for use in any re-releases, so that shouldn't
prevent us from re-releasing any of these books. For comparison:

<http://www.projectaon.org/test/en/xhtml/lw/09tcof/map.jpg>
<http://www.projectaon.org/test/en/xhtml/lw/09tcof/map.png>

<http://www.projectaon.org/test/en/xhtml/lw/12tmod/map.jpg>
<http://www.projectaon.org/test/en/xhtml/lw/12tmod/map.png>

<http://www.projectaon.org/test/en/xhtml/lw/14tcok/map.jpg>
<http://www.projectaon.org/test/en/xhtml/lw/14tcok/map.png>

<http://www.projectaon.org/test/en/xhtml/lw/16tlov/map.jpg>
<http://www.projectaon.org/test/en/xhtml/lw/16tlov/map.png>

--
Simon Osborne
Project Aon

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