2d transfer function for Volume raycasting rendering
Automatically exported from code.google.com/p/volsegtree
http://http.developer.nvidia.com/GPUGems/gpugems_ch39.html
http://www.umiacs.umd.edu/~joseph/ip_scivis12.pdf
The project produces a volume segment hierarchy from a raw volume data
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Matlab ncut code http://timotheecour.com/software/ncut/ncut.html
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Scipy/Numpy http://www.scipy.org/
python histogram.py <file.raw> <x> <y> <z>
<file.raw> is the raw volume cube, x, y, and z the are volume
dimensions.
This will produce an intensity-gradient histogram in <file.png>
RecursiveSeg(#seg, <file.png>)
#seg is the desired number of segments, #seq should be a power of
2 for constructing a full binary tree. Run RecursiveSeg in matlab
on <file.png> will produce an image with labels as pixel values.
The parent-children relationship is encoded in the segment labels. if
childID > #nseg (in the current level), parentID = childID - #nseg/2
The example directory contains the hierarchy image of vismale and tooth as used in the paper.
This software is made available for research and non-commercial use only.
Hierarchical Exploration of Volumes Using Multilevel Segmentation of the Intensity Gradient Histograms
C.Y. Ip, A. Varshney, and J. JaJa
IEEE Transactions on Visualization and Computer Graphics, 18(12), 2012, pp 2355-2363.
@article{ip2012hierarchical,
title={Hierarchical Exploration of Volumes Using Multilevel Segmentation of the Intensity-Gradient Histograms},
author={Ip, C. Y. and Varshney, A. and JaJa, J.},
journal={IEEE Transactions on Visualization and Computer Graphics},
volume={18},
number={12},
pages={2355--2363},
year={2012},
publisher={IEEE}
}
