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Production of High-Resolution Remote Sensing Images for Navigation Information Infrastructures

Geo-Spatial Information Science 2004年第2期7卷 129-134页

作者： WANGZhijun DjemelZiou CostasArmenakis Dept.ofmathematicsandinformatics UniversityofSherbrookeSherbrookeQuebecCanadaJIK2R1. 不详

This paper introduces the image fusion approach of multi-resolutionanalysis-based intensity modulation (mraim) to produce the high-resolution multi-spectral imagesfrom high-resolution panchromatic image and low-resolution multi-spectral images for navigationinformation infrastructure. The mathematical model of image fusion is derived according to theprinciple of remote sensing image formation. It shows that the pixel values of a high-resolutionmulti-spectral images are determined by the pixel values of the approximation of a high-resolutionpanchromatic image at the resolution level of low-resolution multi-spectral images, and in the pixelvalae computation the M-band wavelet theory and the a trous algorithm are then used. In order toevaluate the mraim approach, an experiment has been carried out on the basis of the IKONOS 1 mpanchromatic image and 4 m multi-spectral images. The result demonstrates that mraim image fusionapproach gives promising fusion results and it can be used to produce the high-resolution remotesensing images required for navigation information infrastructures.

关键词： image fusion mraim algorithm navigation information infrastructure

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Current progress on multi-sensor image fusion in remote sensing

Current progress on multi-sensor image fusion in remote sens...

引用

Conference on Data Mining and Applications

作者： Li, DR Wang, ZJ Li, QQ WTUSM Natl Lab Informat Engn Surveying Mapping & Remote Wuhan 430079 Hubei Peoples R China

ISBN: (纸本)0819442844

This paper describes and explains why image fusion, what is image fusion, and the current research status mainly on wavelet based pixel-based image fusion. Pixel-based image fusion defines the fusion process of original images or the images after pre-processing. Preliminary results of many researches show that the advantages of high-resolution panchromatic image and low-resolution multi-spectral image can be combined by image fusion and the information extraction capability can be improved. The fusion methods evolutes from traditional fusion methods, pyramid based fusion methods to nowadays wavelet based fusion methods. The popular wavelet theory based Mallat algorithm and "a Trous" algorithm are explained. In order to overcome some shortcomings of Mallat algorithm and "a Trous" algorithm, mraim algorithm is designed, which is based on the image formation principle and multi-resolution analysis theory. It formulates the Mallat algorithm and "a Trous" algorithm from the theoretical point of view. It can improve the spatial resolution while preserve the hue and saturation unchanged.

关键词： wavelet theory image fusion Mallat algorithm a Trous algorithm mraim algorithm

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