The University of Sheffield , Harbin University and University of Engineering & Technology, Lahore at TRECVID 2013: Instance Search & Semantic Indexing. - Muhammad Usman Ghani Khan; Khawar Bashir; Abad Ali Shah; Lei Zhang; Yoshihiko Gotoh; Pervaiz Iqbal Khan; Mehwish Amiruddin (TRECVID, 2013)