A simple method for spectral unmixing of three mixed objects with Hyperspectral technique

摘要

A simple method for spectral unmixing of three mixed objects is researched in this paper. We select three kinds of material, soil, red oil-varnished board and green oil-varnished board, as objects of our research in lab. According to the characteristics of first and second derivative, we get the proportionality coefficient , which belongs to proportion of red oil-varnished board in mixed spectrum through second derivative of these spectrum, in like manner, we get proportionality coefficient of. soil and green oil-varnished board spectrum. Through data analysis, we draw a conclusion that the result of experiment is acceptable, but first derivative or second derivate of spectrum is sensitive to the noise which is created by instrument and environment.