IHS与小波变换相结合的天绘卫星影像融合方法  

Tianhui Satellite Image Fusing Based on IHS Combined with Wavelet Transformation

作　　者：简剑锋[1,2] 李新涛[1,2] 杨秀策[1,2] 

机构地区：[1]西安测绘研究所,陕西西安710054 [2]地理信息工程国家重点实验室,陕西西安710054

出　　处：《测绘科学与工程》2015年第4期12-17,共6页Geomatics Science and Engineering

摘　　要：本文针对利用天绘卫星影像生成彩色正射影像的问题，提出了一种IHS与小波变换相结合的天绘卫星影像融合方法。为了充分保持多光谱影像的光谱信息，减小光谱失真，在对多光谱影像进行IHS正变换后，采用小波变换对多光谱影像的I分量影像与高分辨率影像进行融合；然后将新融合的I分量与原有的多光谱影像的H、S分量进行IHS逆变换。本文利用北京地区的天绘卫星影像进行试验，实验结果表明，该方法能弥补传统IHS融合法光谱失真的不足，在保持原有多光谱影像光谱信息的同时，又保留了高分辨率影像的空间信息和纹理特征，具有较好的融合效果。In view of the problems of the color DOM production using the TH satellite image, this paper presents an image fusion method based on IHS transform combined with wavelet transformation. In order to retain the spectral information of the multispectra/image and reduce the spectra/distortion, the paper uses the wavelet transform fusion method to fuse I component of the muhispeetral image with the high resolution image after the muhispectral image is transformed by the IHS direct transformation. Then the new I component combined with the original H＆S component of the multispectra/image are inversely transformed using IHS. The paper conducts the experiment using the TH satellite image in Beijing. The results show that the method can remedy the shortage of the traditional IHS transform fusion algorithm. Moreover it enhances the exhibition ability of the spatial detail of the image effectively, retains the spectrum characteristic of the image and has a better fusion result.

关 键 词：天绘卫星影像 融合 IHS 小波变换 

分 类 号：P237[天文地球—摄影测量与遥感] TP751.1[天文地球—测绘科学与技术]