THE FUSION OF SPOT PANCHROMATIC AND TM MULITSPECTRAL IMAGE BASED ON MULTI-BAND BIORTHOGONAL WAVELET
Remote sensing image fusion aims at integrating the information conveyed by data acquired with different spatial and spectral resolution from satellite and aerial platforms. Image fusion is a very important issue in remote sensing and mapping applications such as features extraction, image classification because the fused image can provide more comprehensive information than single image. At present there are various methods developed to fuse or merge images from different sources, acquired at different time or having different characteristics, particularly low-resolution multi-spectral and high-resolution panchromatic images. Some fusion techniques or methods, such as PCA(principle component analysis), IHS (Intensity-Hue-Saturation) and Brovey transform,can provide superior visual high resolution multi-spectral images but ignore the requirement of high quality synthesis of spectral information. In other words, there are some distortion of spectral characteristics in comparison with original multi-spectral images. This paper develop a nesw method which integrate multi-band wavelet and biorthogonal wavelt to merge remote sensing images. Multi-band wavelet transform can deal with arbitrary integer ratio of images resolution, while biorthogonal wavelet transform can reduce the ambiguity on the edge of image because it is symmetric and smooth. A example of fusion based on three-band and biorthogonal wavelet transform is experimented with SPOT panchromatic image and Landsat TM image and the fused image is compared with fused images based on orthogonal wavelet,PCA,HIS and Brovey transform respectively in this paper. Some parameters including mean gradient, combination entropy, standard deviation and correlation coefficient are adopted to appraise the fused images.
Fusion Multi-band Biorthogonal Wavelet TM SPOT
LIANG Shouzhen LI Lanyong
School of Geomatics, Liaoning Technical university, Fuxin Yantai Institute of Coastal Zone Research School of Geomatics, Liaoning Technical university, Fuxin
国际会议
北京
英文
7766-7769
2008-07-03（万方平台首次上网日期，不代表论文的发表时间）