@book{ Solr-oai:psasir.upm.edu.my:56097, title = {Improved SIFT algorithm for place categorization}, author = {Said, Yunusa Ali}, publisher = {IEEE}, year = {2015}, url = {http://psasir.upm.edu.my/id/eprint/56097/1/Improved%20SIFT%20algorithm%20for%20place%20categorization.pdf} }