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Re: naive question about volume rendering

Posted by dscho on Aug 22, 2006; 3:00pm
URL: http://imagej.273.s1.nabble.com/naive-question-about-volume-rendering-tp3701781p3701783.html

Hi,

On Tue, 22 Aug 2006, Sergio Caballero wrote:

> One workaround is to split the RGB into separate channels, do the volume
> rendering on each channel separately, and then use the RGB Grey Merge plugin
> (http://rsb.info.nih.gov/ij/plugins/rgb-gray-merge.html) to merge them.

That would be not good.

Imagine a stack, where you have one red plane in front, and a green plane
in the back. RGB volume rendering would show the red plane, but your
method would show something orange in the middle (because in the
green-only volume rendering, nothing hid the green plane).

So, I think you'd have to enhance the volume rendering plugin to account
for RGB. Maybe it would be easier by using ImageJ3d:
http://www.f4.fhtw-berlin.de/~barthel/ImageJ/ImageJ3D/ImageJ3D.html

Hth,
Dscho