Posted by
Michael Doube-4 on
Aug 21, 2013; 7:35pm
URL: http://imagej.273.s1.nabble.com/A-flat-2D-projection-of-a-3D-model-generated-in-TrakEM2-tp5004520p5004523.html
Dear Tom,
>
>
> Imagine my 3D model is the shape of a piece of pipe. I would like to project it as a flat sheet like it had been cut down one side and rolled out. I would like to avoid 3D glasses if possible. I appreciate any advise/expertise you can give me!
Ken Sloan has a good idea. Perhaps to avoid the problem of aliasing or
errors in cylindrical-ness you could rotate a line ROI with one end at
the centre of your pipe and the other at the circumference of a circle,
easily outside your cylinder.
For each angle rho take some summary (mean, max, nearest...) of the
pixel values on that line to generate a projection, and enter the result
on a rho vs z plot. Do the whole rotation to get all the 'rhos' and fill
out a row of a rho vs z plot.
Repeat that for each z slice of your cylinder and you have rolled it out
onto a flat plane.
Time prevents me from helping further with actual code, sorry!
Michael
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