My research areas are remote sensing, hyperspectral image processing, and spatial data analysis for remote sensing applications. The projects I have been involved in and supervised range from image registration, image correction, feature mining and learning, to spectral-spatial based classification. Subpixel mapping has been addressed via spectral unmixing techniques and super resolution reconstruction approaches. I am the author or coauthor of a wide range of publications including journal papers, book chapters, and conference proceedings. I am the coauthor of the remote sensing textbook entitled Remote Sensing Digital Image Analysis [Springer-Verlag, 3rd (1999) and 4th eds. (2006)]. I am the author of the Field Guide to Hyperspectral/Multispectral Image Processing [SPIE, 2022].