Wednesday, October 5, 2011

Reaction: Imaging Vector Fields Using Line Integral Convolution

The paper starts off with introducing some interesting techniques to image vector fields. It introduces two major techniques DDA and LIC. The former assumes that the local vector can be approximated using a straight line while the latter assumes it starts at the center of a pixel and moves out in positive and negative directions. That is the reason why DDA is able to render linear fields more accurately. Illustrations show that LIC is accurate in displaying textures and vector fields. The paper has supported LIC technique and its output through before and after images.

LIC has the following advantages:
1. Presents data in a more detailed manner.
2. Can removing aliasing efficiently.
3. Different techniques can be interfaced with LIC.
4. LIC can be generalized to higher dimensions.

Results say that LIC is about 10 times slower than DDA. It would be interesting to see how accurate LIC is after techniques to determine their efficiency are invented.