基于NMI不变特征的二值商标图像检索方法研究

Research of Binary Trade Mark Image Retrieval Method Based on NMI Invariable Feature

商标图像的检索在图像库系统管理和应用中得到了越来越多的重视.文中针对二值商标图像,提出一种基于NMI特征的商标图像检索方法.其特点是计算简单,精确度高,具有抗几何畸变性,对滤波、平滑、压缩等图像操作有一定的鲁棒性.试验结果表明,该方法具有一定实用价值,可用于二值商标图像检索.

Trade-marks＇ retrieval has obtained more and more attintion in recent research on content-based management and utilization of image database system. This paper proposes an image retrieval method based on NMI（Normalized Monent of Inertia） invariable feature for binary trade mark images. Which is simple with high efficiency, and has the ability of anti-geometrical distortion while robust to some image processing such as filtering and smoothing, etc. to some extent. Experimental results show that it can be used to trade-marks＇ image retrieval.