Unmixing and Target Recognition in Airborne Hyper-Spectral Images

We present two new linear algorithms that perform unmixing in hyper-spectral images and then recognize their targets whose spectral signatures are given. The first algorithm is based on the ordered topology of spectral signatures. The second algorithm is based on a linear decomposition of each pixel's neighborhood. The sought after target can occupy sub- or above pixel. These algorithms combine ideas from algebra and probability theories as well as statistical data mining. Experimental results demonstrate their robustness. This paper is a complementary extension to Averbuch & Zheludev (2012).