Thursday, July 31, 2008

Hyperspectral Non Negative Tensor Factorization and Dictionary Learning

Here is a use of Non Negative Tensor Factorization that does Dictionary learning. The dictionary is then compared to actual measurements performed by a hyperspectral telescope in Maui.

Tensor Methods for Hyperspectral Data Processing: A Space Object Identification Study

Qiang Zhang, Han Wang, Robert J. Plemmons, and V. Paul Pauca

The abstract reads:
An important problem arising in hyperspectral image data applications is to identify materials present in the object or scene being imaged and to quantify their abundance in the mixture. Due to the increasing quantity of data usually encountered in hyperspectral datasets, effective data compression is also an important consideration. In this paper, we develop novel methods based on tensor analysis that focus on all three of these goals: material identification, material abundance estimation, and data compression. Test results are reported for Space Object Identification (SOI).

Some part of this work was mentioned and explained before here. Not bad uh!

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