CAJ | 학술논문

选用商品化照相机镜头、液晶可调谐滤光片和单色面阵CCD相机,将液晶可调谐滤光片置于由镜头和CCD相机组成的照相光路中构成便携式多光谱成像仪.该多光谱成像仪能够在被动和主动光源下进行多光谱图像数据采集,工作波长范围是400～720 nm,光谱分辨率为10 nm.建立了多光谱成像仪系统多光谱图像采集数值模型,分析了误差源,为系统定标提供了理论依据.在自然光照条件下进行了盆景植物的多光谱图像采集试验,重建出多光谱数据立方体,绘制了典型目标点的光谱曲线.
선용상품화조상궤경두、액정가조해려광편화단색면진CCD상궤,장액정가조해려광편치우유경두화CCD상궤조성적조상광로중구성편휴식다광보성상의.해다광보성상의능구재피동화주동광원하진행다광보도상수거채집,공작파장범위시400～720 nm,광보분변솔위10 nm.건립료다광보성상의계통다광보도상채집수치모형,분석료오차원,위계통정표제공료이론의거.재자연광조조건하진행료분경식물적다광보도상채집시험,중건출다광보수거립방체,회제료전형목표점적광보곡선.
A new type of portable multispectral imager consisting of off the Shelf focal plane arrays CCD camera,camera lens and Liquid Crystal Tunable Filter (LCTF) is presented.The LCTF used as a dispersion element is placed between the camera lens and CCD.This multispectral imager can perform multispectral image data acquisition experiment under active and passive illuminating condition,the spectrum range is 400~720 nm,and the spectral resolution is 10 nm.The numerical model of multispectral image acquisition is formulated,and the source of error is analyzed.A multispectral image data acquisition experiment under natural lighting condition is carried out,the target is a plant in pot,a multispectral image datacube is constructed and the spectrum of typical object point is illustrated.