基于NMI不变特征的二值商标图像检索方法研究

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。

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

Trade-marks'retrieval has obtained more and more attention in recent research on content-based management and utilization of image database system.This paper proposes an image retrieval method based on NMI(Normalized Moment 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.Experimental results show that it can be used for trade-mark image retrieval.