[projectaon] Re: 01hh graphics
- From: "Jonathan Blake" <blake.jon@xxxxxxxxx>
- To: projectaon@xxxxxxxxxxxxx
- Date: Wed, 25 Oct 2006 10:40:26 -0700
On 10/25/06, Simon Osborne <outspaced@xxxxxxxxxxxx> wrote:
I scanned Pic 1 from 01hh three different ways:
* colour @ 300dpi
* black and white @ 300dpi
* greyscale @ 300dpi with +10 contrast and -10 brightness (the original
greyscale scan was far too light)
I can't e-mail the results because they're too huge. I put the archive here:
<http://www.projectaon.org/staff/simon/01hh_Pic1_Test.rar>
No other work has been done to them. What do you think? Which is best? What
processes need to be applied? Could a macro be written to do this? Should the
frames be straightened (I am in favour of this, but others might not be)?
I also started with your greyscale images and created the following:
http://www.projectaon.org/staff/jonathan/01hh/Illustration%201.gif
http://www.projectaon.org/staff/jonathan/01hh/Illustration%202.gif
This is the process I follow using Paint Shop Pro 6.02:
1) Rotate image - I figure out how much to rotate by drawing vertical
lines from the top corners of the border to bottom and noting how in
the status bar many degrees off the borders are from 180 degrees. I
average the two values. It's usually within +-0.3 degrees.
2) Convert to B&W (i.e. Colors -> Decrease color depth -> 2 colors)
settings: Grey values, Nearest Color, Weighted
3) Select all
4) Remove white pixels from selection (i.e. Selections -> Modify ->
Transparent Color) settings: Transparent color: White; Tolerance: 0
5) Contract the selection by 1 pixel (i.e. Selections -> Modify -> Contract)
6) Expand the selection by 1 pixel (i.e. Selections -> Modify -> Expand)
7) Crop to selection (i.e. Image -> Crop to selection) Make sure that
the background color is white. If you're wondering what steps 5, 6,
and 7 accomplish, they remove isolated, small, black pixel clusters
from the image which are usually just artifacts of the printing or
scanning. If however, an image has many legitimate isolated clusters,
this shortcut shouldn't be used. The spurious clusters should be
removed manually.
8) Convert to Grey scale (i.e. Colors -> Grey Scale)
9) Resize to 386 pixels wide (i.e. Image -> Resize) settings: Smart
size, maintain aspect ratio
10) Manually clean up borders with an unaliased line tool. This is the
one place where the scan usually looks the worst. The eye knows that
it should be a straight line and if it isn't it just looks tacky.
11) Recrop if border or protruding picture elements no longer exactly
touch the top or bottom. If the don't touch left or right, I undo back
to prior to step 7 and remove any extraneous pixels from the selection
that made the crop in step 7 too wide.
12) Export to GIF (i.e. File -> Export -> Transparent GIF) settings:
Transparency: None, colors: 16, dithering: 0, palette: Standard /
Web-Safe, format: non-interlaced, version 89a
I could probably knock these out over the next couple of days.
On a separate topic, I'm doing some maintenance on my staff area. I've remove
the EE and SS picture archives; can I remove the LW_Maps.rar file, which
contains the replacement scans for maps for Books 1-8? Or are they still yet to
be incorporated into the source XML data/folders/whatever?
I'd keep them around, but you can whisk them under the rug somewhere
on the server where they don't clutter up your main staff directory.
--
Jon
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