Final project proposal

蘇彥禎


Problem

I plan to implement a volume rendering system in the final project of CG course. The system will map 3D scalar data to color and opacity value and integrate them to the final result as figure below. A big problem of volume rendering is how to find a suitable mapping method to create meaningful classification. I want to try whether the concept of multidimensional indexing mentioned in MMAI course can provide a new approach.


from wikipedia

 

This is my current result.
This is the lit result


Idea

1. Treat every voxel of the input volume as a 4 dimensional data that includes 3D position and intensity value.


2. Use MDS (Multidimensional Scaling) method to display the relationship of these voxels.
    I hope the distribution map can be as good as the example below.


3. Try to design some operation for user to set the transfer function that maps scalar data to RGBA value.


LLE example


Related work

The most popular classification approach is Joe Kniss's navigation method.


"Interactive Volume Rendering Using Multi-Dimensional Transfer Functions and Direct Manipulation Widgets"


Current results


clustering interface


rendering result


 

  

 

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