Dengsheng Zhang Guojun Lu Evaluation of MPEG-7 shape descriptors against other shape descriptors. 15-30 2003 9 Multimedia Syst. 1 http://www.springerlink.com/openurl.asp?genre=article&issn=0942-4962&volume=9&issue=1&spage=15 db/journals/mms/mms9.html#ZhangL03