Dear Nick: I've been helping a PhD student with similar questions
(calculating long bone densities from scanned x-ray images). We played about
with Idrisi, but in the end decided to use Scion Image (not GIS, but a good
image analysis tool that should give you what you're after). Better yet,
it's free.
http://www.scioncorp.com/frames/fr_scion_products.htm
Good luck,
James
Dr J Conolly
Institute of Archaeology
University College London
31-34 Gordon Square
London WC1H 0PY
0171-504-4790
----- Original Message -----
From: BESNMOU1 <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, October 18, 1999 8:09 PM
Subject: Calculating bone areas
Dear All
A query slightly outside the usual range of GIS users. Perhaps you can
apply your knowledge to help me out?
I have a colleague who has cross sectioned lizard bones. The sections
are in bitmap format at present and effectively look like a black blob
on the screen. She needs to calculate the pixel area of the black
blob. (if you don't get what I mean see the attached blob!)
I have tried to magic crop it in Paintshop Pro 5 and whilst this
selects the area nicely it doesn't allow me to gain information on the
number of pixels inside the crop marker. However, I recently saw ERDAS
Imagine doing something similar and giving an area based output.
Can such an operation be done in ArcView? If so how should I go about
doing this?
All help / messages of support gratefully recieved!
Cheers, Nick Mount
Fluvial Researcher
Sessional Lecturer
LJM University
Liverpool
UK
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