vely,todisplayatruecolorimage(whatyoureyewouldsee)?(合成真彩色影像)Whenyouassignband6tored,band3togreenandband2toblue,whatdoesvegetationlooklikeintheresultingimage?Whatdoesthistellyouaboutvegetationreflectance?(6,3,2分别赋给R,G,B,合成影像,其植被的颜色是什么?)DrawalinefromyourROIasciifilehereforpixelsofwater,vegetation,building,roadandbaresoilrespectively.利用excel绘制水体、植被、建筑、道路和裸地的光谱曲线,插入到本题后。Doesthisreflectancecurveresembletheshapeofthetypicalvegetationreflectancecurve?(植被的光谱是否符合理论上所学的植被的光谱?)符合,在红外近红外效果明显Drawspectralprofiles(justreproducethegeneralshape)belowforvegetation,TiananmenSquareandwaterpixelsfromtheTMimage.Foreach,statewhetheryouthinkthepixelis“pure”ordoyouthinkitcontainsamixtureofmaterials.Explainyouranswers.(利用ENVI工具制作植被、天安门广场和水体的光谱曲线。对于每一个曲线,请考虑其是纯像元还是混合像元,为什么?)水体,纯相元,在同一像素内部存在其他地物天安门,植被,混合相元,同一像素内有多种地物
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