Multispectral MWIR image classification using filters derived from independent component analysis
Abstract
It is known that spectral-spatial ICA basis functions of visible color images are similar to some processing elements in the human visual systems in that they resemble Gabor filters and show color opponencies. In this research we study combined spectral-spatial ICA basis functions of multispectral MWIR images. These ICA spectral-spatial basis functions are then used as filters to extract features from multispectral MWIR images. It is hypothesized that learning the added dimension of spectral information along with spatial characteristics of basis functions using ICA improves classification performance for multispectral MWIR images. The images are captured in the 3.0 - 5.0um, 3.7 - 4.2um and 4.0 - 4.5um bands using a multispectral MWIR camera. The phase relationship between the basis functions indicate how the extracted features from the different spectral band images can be combined. We use classification performance to compare features obtained by filtering using multispectral ICA basis functions, multispectral PCA basis functions and opponent Gabor filters.
Publication Title
Proceedings of SPIE - The International Society for Optical Engineering
Recommended Citation
Chari, S., Halford, C., Jacobs, E., & Robinson, A. (2007). Multispectral MWIR image classification using filters derived from independent component analysis. Proceedings of SPIE - The International Society for Optical Engineering https://doi.org/10.1117/12.719780
