%0 Journal Article
%T NMF-Based Image Hashing Algorithm Using Restricted Random Blocking<br>基于约束随机分块的NMF图像哈希算法
%A Xiang Shi-jun
%A Yang Jian-quan
%A <br>项世军
%A 杨建权
%J 电子与信息学报
%D 2011
%I 
%X The NMF (Non-negative Matrix Factorization)-based image hashing is robust to common image operations (such as lossy compression, low-pass filtering, resolution scaling and etc.), but is sensitive to rotation operations. After carefully investigating the blocking strategy of the original NMF-based scheme, a rotation-resilient image hashing algorithm is proposed. The proposed algorithm reduces the undesirable effect induced by image rotation through constraining blocking range and adopting appropriate block size, and thus provides better robustness to image rotation. Experimental results demonstrate that the proposed hashing algorithm provides a satisfactory robustness to image rotation while keeping its performance to common image processing operations.
%K Image processing
%K Image hashing
%K Non-negative Matrix Factorization (NMF)
%K Robustness
%K Rotation<br>图像处理
%K 图像哈希
%K 非负矩阵分解
%K 稳健性
%K 旋转
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=0B2A193356A7189B421223AC13179BF6&yid=9377ED8094509821&vid=27746BCEEE58E9DC&iid=0B39A22176CE99FB&sid=5FF9F4F7CB1800C7&eid=4B168891B5E5FB30&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=13