Re: isosurface visualization



"misty m." <donotspam@xxxxxxx> wrote in message news:g0ji72$1o5$1@xxxxxxxxxxxxxxxxxxxxx
hi,
i would like to do some 3d volume visualization. i have CT
images of drilled (in a bone) hole.
from each of images i've found contours of drilled hole-so
i've got (x,y) coefficients of each hole. i decided the
distance between holes = 1. so i've got 3d coeffiecients
for my solid, x,y-coefs of hole and z-distance.
i would like to do the visualization using 'isosurface',
cause i like its effects most, but..

fv = isosurface(X,Y,Z,V,isovalue)

X,Y,Z - i've got
V - i do not have volume
isovalue - what describes it? what value should it have?

i would be really gratefull for any suggestions,
kind regards

No, isosurface works directly from the CT images. You stack
them up to form a 3D array V, and then give that to isosurface.
The isovalue is the level at which you've drawn your contours.

I don't know of a MATLAB function for building a surface
between a set of contours. There are some tricky cases there
when you have a different number of sample points in adjacent
contours or when the topology changes between contours.

-MPG-


.



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