航磁图像梯度特征的提取  

Gradient Characteristics Obtaining from Aeromagnetic Images

作　　者：刘艳[1,2] 郑骏[2] 葛伟华[1] 

机构地区：[1]华东师范大学计算机科学技术系,上海200062 [2]华东师范大学计算中心,上海200062

出　　处：《计算机工程》2009年第16期206-208,共3页Computer Engineering

摘　　要：针对在航磁等值线图上标定地球磁场梯度特征的问题,提出立体阴影处理和梯度特征线条化的处理方法。从磁场数据提取原始位置关系,利用立体光照处理技术以及方向滤波,获得航磁数据的梯度分布图。阴影和细化后的方向滤波实验结果表明图像地表特征显示充分,且对于叠加分析具有重要价值。To meet the needs of labeling magnetic gradient characteristic of aeromagnetic contour map, methods based on solid-shadow algorithm and directional filtering technique are presented. After relative ubiety of magnetic field data is distilled, two types of graded distribution are obtained by solid-shadow algorithm and directional filtering technique respectively. The results of solid-shadow algorithm and filter-refinement processing make surface gradient feature very sharp and effective, which is valuable for overlap analysis.

关 键 词：航磁 特征提取 图像增强 滤波 立体阴影图 

分 类 号：TN911.73[电子电信—通信与信息系统]