Posted by
ctrueden on
Aug 22, 2006; 8:32pm
URL: http://imagej.273.s1.nabble.com/naive-question-about-volume-rendering-tp3701781p3701784.html
Hi,
Also, VisBio's volume rendering supports RGB color (
http://www.loci.wisc.edu/visbio/). Just adjust the opacity slider in the
color settings as usual (it affects all color channels) -- or you can
manually tweak the alpha channel of each channel's color table separately.
VisBio's algorithm for volume rendering (a series of semi-transparent
planes) is quite different than Volume Viewer's, so you'll probably get a
quite different picture (in some cases better, in some cases worse).
-Curtis
On 8/22/06, Johannes Schindelin <
[hidden email]> wrote:
>
> 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
>