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。
关键词:
航磁,
特征提取,
图像增强,
滤波,
立体阴影图
Abstract: 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.
Key words:
aeromagnetic,
characteristic obtaining,
image enhancement,
filtering,
solid-shadow map
中图分类号:
刘 艳;郑 骏;葛伟华. 航磁图像梯度特征的提取[J]. 计算机工程, 2009, 35(16): 206-208.
LIU Yan; ZHENG Jun; GE Wei-hua. Gradient Characteristics Obtaining from Aeromagnetic Images[J]. Computer Engineering, 2009, 35(16): 206-208.