The original image.
The goal of this project was to create a terrain viewer. This terrain viewer should be able to display the terrain at multiple levels of resolution (i.e. using different amounts of wavelet coefficients, essentially getting rid of unnecessary detail). We used three types of wavelet transforms: a linear, a quadratic, and a cubic B-spline transform.
Below are some example images from the program. There are three columns, one for each transform method, and the images have decreasing number of the wavelet coefficients used as you decend down the page. Click to enlarge the images.
| % of Coeff's | Linear B-Spline Transform | Quadratic B-Spline Transform | Cubic B-Spline Method |
|---|---|---|---|
| ~80% | 
| 
| 
|
| ~60% | 
| 
| 
|
| ~40% | 
| 
| 
|
| ~30% | 
| 
| 
|
| ~20% | 
| 
| 
|
| ~15% | 
| 
| 
|
| ~10% | 
| 
| 
|
| ~5% | 
| 
| 
|
| ~4% | 
| 
| 
|
| ~3% | 
| 
| 
|
| ~2% | 
| 
| 
|
| ~1% | 
| 
| 
|
| ~0.5% | 
| 
| 
|
| ~0.25% | 
| 
| 
|
| ~0.1% | 
| 
| 
|
| 0% | 
| 
| 
|
Last Modified: Sunday, February 25, 2001
Chris Wyman (wyman@cs.utah.edu)