Wednesday, October 5, 2011

Reaction: Imaging Vector Fields using Line Integral Convolution

This paper talks about the linear and curvilinear filtering techniques to locally blur textures along a vector field. There is a good comparison made in this paper between DDA convolution and Line integral Convolution. The DDA convolution renders the vector fields unevenly , treating linear portions of the field more accurately than small scaled vertices. This is undesirable for some vector fields as the details in small scaled structures are lost. So for this there is an alternate technique used in the paper called the LIC. This technique uses a completely different approach for approximating a vector . In LIC the author has discussed different things such as periodic motion filters, normalization, implementation and application. LIC has several advantages that have been discussed in the paper like removing the aliasing error, a detailed description of the data and the ability to interface different techniques with LIC.