[lug] Off-topic: Contour line in image problem

[D. Stimits]

Gimp's emboss might do what is needed. Easy to test out.

D. Stimits, stimits at idcomm.com

John Hernandez wrote:
> 
> I wonder if some remote sensing / GIS / satellite imagery software
> could help you accomplish this.  Imagine.  ArcView.  GRASS.  Maybe?
> 
> Glenn Murray wrote:
> 
> > This is off-topic, but I know there are a lot of people in the
> > graphics and scientific communities who follow this list and may find
> > this problem interesting.
> >
> > I have a scientific computing problem and I suspect there is software
> > out there that does what I am trying to do.  More or less I have to
> > draw a contour line in an image and find its length.
> >
> > More specifically, I have black and white jpeg images of a flame, in
> > profile, in a tube.  I need to know the area of the flame front.  To
> > find this I (am thinking I) need to draw a line along some (constant)
> > intensity around the edge of the flame; a line dividing light from
> > dark, as it were, from the top of the image to the bottom.  Then I
> > need to know the line's length (from that I could calculate an
> > estimate of the area).
> >
> > Ideally the computer would draw this line or I could with a mouse, and
> > I could mark start and end points.  The line may not reach to the tube
> > edge, so I may need to extrapolate it.
> >
> > Do you know of any software to do this sort of thing?  I may end up
> > writing it myself.  Any help would be greatly appreciated.
> >
> > Glenn Murray
> > www.mines.edu/~gmurray/public_html/Welcome.html
> >
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> 
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