基于ASIFT与Harris改进的影像仿射不变性算法研究  

Research on Image Affine Invariance Algorithm Based on ASIFTand Harris Improvement

作　　者：敖成欢 范茂锋 AO Chenghuan;FAN Maofeng(Guiyang Institute of Surveying and Mapping,Guiyang 550000,China)

机构地区：[1]贵阳市测绘院,贵州贵阳550000

出　　处：《城市勘测》2023年第2期95-98,共4页Urban Geotechnical Investigation & Surveying

摘　　要：通过ASIFT算法,提取出其算法中的仿射不变模型Affine算子,再利用Harris算子进行影像特征检测。通过两种算子的结合得出仿射不变模型的解算参数,使得影像的匹配算法具有仿射不变性。利用无人机光学影像对改进算法进行影像仿射不变性实验。实验结果表明:改进的Affine-Harris算法与Harris算法相比,对于影像的匹配,在仿射不变性上优于原算法。This paper extracts the affine invariant model Affine operator through the ASIFT algorithm,and based on the Harris operator to detect image features.The calculation parameters of the affine invariant model are obtained by the combination of the two operators,which makes the image matching algorithm have affine invariance.The improved algorithm is used to conduct image affine invariance experiments using UAV optical images.The experimental results show that compared with the Harris algorithm,the improved Affine-Harris algorithm is better than the original algorithm in terms of affine invariance for image matching.

关 键 词：HARRIS算子 影像仿射不变性 ASIFT 特征匹配 

分 类 号：TP751.1[自动化与计算机技术—检测技术与自动化装置]