农作物的彩色红外影象分析

本文将实测地物波谱、彩色红外航片密度测量和地面同步调查结果相结合,分析了农作物的彩色红外航片影象标志及稳定性。结果表明:(1)由于物候节律和群落外貌的差异,各种农作物的光谱反射率在量值上有差异,使得其在彩色红外正片影象上(黄/青)密度比差异显著,可以识别;(2)受盐碱危害的作物品红层密度变化明显,受浸涝危害的作物青层密度变化明显;(3)小麦拔节前后,丰产型、一般型和低产型麦田可以运用负片的(黄 品红)/青]密度值来识别。这是一个较早获取小麦长势信息的较好时段。

ANALYSIS OF COLOR INFRARED IMAGE OF CROPS

The Characteristics of aerial color infrared film image of Crops and their stability have been analysed in this paper on the basis of measurement of aerial color infrared film density and terrain spectra combined with synchronous suruey of ground truth, The results are as follows:1. Because of the diversity of phonological reasons and communities, there exists a quantitative difference in spectral reflectances of various crops, which makes (Yellow/Cyan) the difference in density ratio of color infrared posi...