Wednesday, October 5, 2011

Reaction: Imaging vector fields using line integral convolution

This is an impressive paper dealing with Image processing techniques. I have learned about the techniques which are used to generate textures. One interesting point that I have noted is how DDA is inaccurate in making the assumption that a local vector field can be approximated by a straight line. A good explanation of filters is also provided, especially how LIC can be used with a combination of another filter to remove aliasing. It certainly makes sense to use LIC for accuracy because of its efficiency and the extra operation of removing the aliasing comes at no additional cost.

I feel that LIC performs much better when used along with other algorithms than acting stand alone, this is because LIC can take advantage of the post-processing results of other algorithms and act upon them to produce highly filtered results. There is also a striking similarity that I noticed between the results produced by LIC and the photo editing software's we see on mobile phones today. This I guess shows the importance of LIC and how varied its applications can be.

I like the way the authors have paved the path for future work by describing about the varied applications of LIC, specifically the one which talks about how LIC can be used to deblur images which have been blurred by a moving CCD cameras. This paper is a good read for researchers and students who are interested in the field of image processing. I would certainly look into some of the references provided in the paper.