| 高光谱图像光谱域噪声检测与去除的DSGF方法 |
| |
| 引用本文： | 王强,束炯,尹球.高光谱图像光谱域噪声检测与去除的DSGF方法[J].红外与毫米波学报,2006,25(1):29-32. |
| |
| 作者姓名： | 王强 束炯 尹球 |
| |
| 作者单位： | 1. 华东师范大学,地理信息科学教育部重点实验室,上海,200062
2. 中国科学院上海技术物理研究所,上海,200083 |
| |
| 基金项目： | 国家自然科学基金资助项目(40171088)，国家863应用与示范项目(2002AA134020)，上海市科委科技攻关计划项目(035115006)，上海市科委重大项目(04DZ19305) |
| |
| 摘 要： | 高光谱遥感图像中不仅存在空间域噪声而且存在光谱域噪声.传统的图像滤波仅对图像空间域噪声进行处理,而不能去除光谱域噪声,为改进这种状况,提出了DSGF(Derivative based Savitzky-Golay F ilter)方法.首先,基于反射率光谱的二阶导数对反射率光谱各波段噪声大小进行判定,然后用不同大小平滑窗的Savitzky-Golay滤波器对反射率光谱作两步滤波.对高光谱图像进行的逐像元DSGF滤波,在去除光谱域中噪声的同时,保留了图像反射率光谱的大部分细微特征.
|
| 关 键 词： | 高光谱 噪声 Savitzky-Golay滤波 光谱导数 |
| 文章编号： | 1001-9014（2006）01-0029-04 |
| 收稿时间： | 2005-05-23 |
| 修稿时间： | 2005-11-27 |
DSGF METHOD ON DETECTING AND REMOVING SPECTRAL NOISE OF HYPERSPECTRAL IMAGE |
| |
| WANG Qiang,SHU Jiong,YIN Qiu.DSGF METHOD ON DETECTING AND REMOVING SPECTRAL NOISE OF HYPERSPECTRAL IMAGE[J].Journal of Infrared and Millimeter Waves,2006,25(1):29-32. |
| |
| Authors: | WANG Qiang SHU Jiong YIN Qiu |
| |
| Affiliation: | 1. Key Lab of GIS ,Educational Ministry, ECNU, Shanghai 200062, China; 2. Shanghai Institute of Technical Physics, CAS , Shanghai 200083, China |
| |
| Abstract: | Not only spatial noise but also spectral noise exists in hyperspectral images.Only spatial noise but no spectral noise is removed with traditional image filters.To improve this situation DSGF(Derivative based Savitzky-Golay Filter) method was presented here.First noise level of each especial band is determined based on the second derivative of reflectance,then reflectance is filtered twice by Savitzky-Golay filter sizes,which results in removing spectral noise in hyperspectral image.In the meanwhile most fine features of reflectance are remained after hyperspectral image is filtered pixel by pixel by DSGF filter. |
| |
| Keywords: | hyperspectral noise Savitzky-Golay filter spectral derivative |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《红外与毫米波学报》浏览原始摘要信息 |
|
点击此处可从《红外与毫米波学报》下载全文 |
