| Re: IDL for 3D image processing? [message #5921 is a reply to message #5909] |
Wed, 13 March 1996 00:00  |
Ken Kump
Messages: 8
Registered: February 1996
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Junior Member |
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Peter Verveer wrote:
> Is IDL suited for 3D image processing? Are there 3D equivalents to
> operations such as the 2D fourier transform and convolution?
>
> I would apply IDL for processing 3D microscopy data . Has IDL been
> applied in this field, or in 3D medical image processing or
> tomography, which are similar fields?
I am an IDL user applied to medical image processing, not microscopy.
To be frank, I find IDL4.0 difficult to do 3D work.
Let me clarify. Many of the routines
are there, but they are somewhat cumbersome. For example, I take
a 3-D MRI volume data set and would like to do a skin-surface
rendering. It is possible using either slicer.pro (a widget-based
package) or using more direct means with shade_volume. It is
difficult to manipulate the object and put arbitrary cuts into it.
The tools are there, you need to spend the time to write an
optimized, slicer-like routine..but other packages are avail which
already have this built-in.
Most functions are extendable to 3D. The image processing functions
are limited, but I hear that ver 5 will fill in this void.
I think IDL is nice in that there is a fair amount of flexibility
and some power. I find it more optimized for 2-D stuff. There are
some nice visualization tools, animators, and widgets. There is
not, as far as I know, a Radon Transform, for example (although I
have implemented several algorithms) to do tomography.
I find IDL a "nice" environment to do processing and display.
It is straightforward to include your own, optimized C/FORTRAN code
which I use often. Your decision really should depend upon your
needs (eg: Matlab (1D, 2D signal processing/optimization),
AVS (good 3D but more for developing applications than research), ...).
Good luck,
Ken Kump
Department of Biomedical Engineering
Case Western Reserve University
Cleveland, Ohio 44106, USA
E-mail: ksk3@po.cwru.edu
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