SPECTRUM ESTIMATING METHOD OF SPECTRAL REFLECTANCE OF MULTI-BAND IMAGE AND SPECTRUM ESTIMATING SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a spectrum estimating method of a spectral reflectance of a multi-band image and a spectrum estimating system, capable of shortening a processing time for obtaining an estimated spectrum without reducing estimation accuracy of the spectrum effectively, when the multi-band image is photographed by using a variable wavelength filter and the spectrum of the spectral reflectance of a photographing object is estimated by using it. ;SOLUTION: In this estimating method, a conversion table in which a brightness value obtained by photographing a chart having a known reflectance is made to correspond to the reflectance in each channel of a multi-band image comprising plural original images, is formed beforehand, and the brightness value of the original images of the multi-band image obtained by photographing an object is converted into a reflectance by using the conversion table, to thereby estimate a spectrum of a spectral reflectance of the object. This spectrum estimating system of the spectral reflectance of the multi-band image by using the estimating method of the spectrum is also provided.;COPYRIGHT: (C)2001,JPO