The basic research on evaluation and prediction of the plant vitality by the degree of spectral polarlization characteristics

光谱偏振特性度评价与预测植物生命力的基础研究

基本信息

批准号：
13660139
负责人：
INAMURA Minoru
金额：
$ 2.3万
依托单位：
Gunma University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2003
项目状态：
已结题

项目摘要

1.Spectral reflectance measurement and vegetation evaluation by NDVI : The performance of the red edge which was a reason of NDVI should be evaluated, and the wavelength was made to be a variable in respect of the continuation optical spectrum measurement, and the differential was done. In this spectrum differential, there was a peak value near 0.5μm, and it was found that the change of this peak value for the same stress was more supersensitive than it in the red edge and that it is effective of the definition of new NDVI at this wave-length.2.The relationship between evaluation and NDVI of the vegetation condition by the characteristic degree of the spectral polarization : The measurement sensitivity of NDVI and degree of the spectral diffraction polarized light for the stress to the plant (cabbage) was compared. At first, 663,1450nm are chosen by the factor analysis. The result of the detection comparison of characteristic degree of spectral diffraction polarized light and NDVI consists like the following at this two wavelengths : In NDVI in 10th, degree of 663nm spectral diffraction polarized light in 19th and degree of 1450nm spectral diffraction polarized light in NDVI, the change was confirmed the detection of the stress after seventh.3.The application to imaging systems of the degree of spectral polarization and the vegetation vitality evaluation. : The image degree of the spectral diffraction polarized light was observed by the set of band-pass filter and polarized filter in the CCD camera of the marketing. The stress is given to cabbage and digitalis, the image of the degree of spectral polarized light is measured, and it compared color image usual one. Correlation coefficient of the degree of polarization image and the temporal behavior were catching stresses to the plant which that is to say, it could not be confirmed in the color image.

1.NDVI的光谱反射率测量和植被评估：应评估作为NDVI原因的红边的表现，并将波长作为连续光谱测量的变量，并进行微分在该谱微分中，在0.5μm附近存在一个峰值，发现该峰值对于相同应力的变化比红边处的变化更加敏感，这对于新NDVI的定义是有效的2.光谱偏振特征度评价植被状况与NDVI的关系：NDVI和光谱衍射偏振光度对植物（甘蓝）胁迫的测量灵敏度为首先，通过因子分析选取663、1450nm，这两者的光谱衍射偏振光特征度与NDVI的检测比较结果如下。波长：在NDVI中的第10级、第19级的663nm光谱衍射偏振光以及在NDVI中的1450nm光谱衍射偏振光的变化，在第7级之后的应力的检测中确认了变化。 3.在成像系统中的应用光谱偏振与植被活力评价：通过带通组观察光谱衍射偏振光的像度。重点关注市售CCD相机中的滤光片和偏振滤光片，测量光谱偏振光的图像，并将其与通常的彩色图像的偏振度相关系数进行比较。时间行为给植物带来了压力，也就是说，它无法在彩色图像中得到证实。