Jason Holloway Tanu Priya Ashok Veeraraghavan Saurabh Prasad Image classification in natural scenes: Are a few selective spectral channels sufficient? 655-659 2014 ICIP https://doi.org/10.1109/ICIP.2014.7025131 conf/icip/2014 db/conf/icip/icip2014.html#HollowayPVP14