| 高光谱亚像元定位的线特征探测法 |
| |
| 引用本文： | 刘照欣,赵辽英,厉小润,陈淑涵.高光谱亚像元定位的线特征探测法[J].测绘学报,2019,48(11):1464-1474. |
| |
| 作者姓名： | 刘照欣 赵辽英 厉小润 陈淑涵 |
| |
| 作者单位： | 杭州电子科技大学计算机学院,浙江杭州,310018;浙江大学电气工程学院,浙江杭州,310027 |
| |
| 基金项目： | 国家自然科学基金（61671408；61571170）；教育部联合基金（6141A02022350）；上海航天科技创新基金（SAST2016028） |
| |
| 摘 要： | 未考虑地物亚像元级空间结构特征是影响高光谱亚像元定位精度的因素之一。为了有效解决这一问题,本文提出一种基于混合像元线特征探测的亚像元定位算法。首先,通过光谱解混确定含典型线状地物的混合像元。然后,基于完备直线集的最大线性指数方法确定其余含线特征的混合像元,使用模板匹配方法结合像元引力确定含线特征混合像元的亚像元类别。最后,基于线性优化的方法迭代确定剩余混合像元的亚像元类别。通过真实数据及仿真数据的试验,结果表明所提出的方法能有效提高亚像元定位精度。
|
| 关 键 词： | 图像处理 亚像元定位 空间相关性 线特征探测 模板匹配 |
| 收稿时间： | 2018-05-09 |
| 修稿时间： | 2019-02-27 |
Linear feature detection for hyperspectral subpixel mapping |
| |
| LIU Zhaoxin,ZHAO Liaoying,LI Xiaorun,CHEN Shuhan.Linear feature detection for hyperspectral subpixel mapping[J].Acta Geodaetica et Cartographica Sinica,2019,48(11):1464-1474. |
| |
| Authors: | LIU Zhaoxin ZHAO Liaoying LI Xiaorun CHEN Shuhan |
| |
| Institution: | 1. School of Computer Science and Technology, Hangzhou Dianzi University, Hangzhou 310018, China;2. College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China |
| |
| Abstract: | The ignorance of the spatial structure of subpixel is one of the factors that influence the accuracy of hyperspectral subpixel mapping. In order to effectively solve this problem, a subpixel mapping algorithm is proposed that based on linear feature detection in mixed pixels. Firstly, the mixed pixels of typical linear feature classes are determined by spectral unmixing. Then, based on the maximum linear index method of the complete straight-line set, the linear features of remaining mixed pixels are determined. The template matching method is used in conjunction with the pixel attraction to determine the classes of linear subpixels. Finally, the subpixel categories of the remaining mixed pixels are iteratively determined based on the linear optimization method. The experimental results of real data and simulation data show that the proposed method can effectively improve the precision of subpixel mapping. |
| |
| Keywords: | |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《测绘学报》浏览原始摘要信息 |
| 点击此处可从《测绘学报》下载免费的PDF全文 |
|
