Publication Abstract
Ranked Representation of Vector Fields
Nakshatrala, B., Thompson, D., & Machiraju, R. (2003). Ranked Representation of Vector Fields. In F. Post, G. Neilsen, and G.-P. Bonneau (Eds.), Data Visualization: The State of the Art. New York: Kluwer Academic Publishers. 301-313.
Abstract
Browsing and visualizing large datasets is often a tedious chore. Locating
features, especially in a wavelet transform domain is usually offered
as a possible solution. Wavelet transforms decorrelate data and facilitate
progressive access through streaming. The work reported here describes
a scheme that allows the user to first visualize regions containing significant features. Various region and coefficient ranking strategies can
be incorporated into this approach so that a progressively encoded bitstream
can be constructed. We examine four wavelet ranking schemes
and demonstrate the usefulness of the feature-based schemes for a 2D
oceanographic dataset.