黄瓜霜霉病害的窄带多光谱图像光谱分类和评估研究

在研究多光谱成像技术特点的基础上,提取光谱有效特征信息,优化光谱编码条件,对4个等级的黄瓜霜霉病害叶面光谱进行融合编码分类识别,可以有效地降低光谱的相似性,增强可分性,实现了4个病害等级的较好分类。在编码识别的基础上,采用一种权衡性较强的评价方法对分类结果进行评估,这种评价方法实现了把病害分类由4个离散的等级扩展到从0到1的连续量化的评定,并且可以精确到对单个像素点的等级评估。

Study on Spectral Classification and Evaluation Base on Narrowband Multispectral Images of Cucumbers Downy Mildew Disease

Based on the study of Multi-spectral imaging technology,we extracted spectral effective feature information and optimize coding conditions.In this paper,a fusion coding for spectrum method was presented.Classification and recognition of four levels of cucumber downy mildew was achieved by fusion coding for the spectrum of foliar disease.The result of classification showed that the spectral similarity was reduced effectively and the separability was enhanced by fusion coding.Then,an evaluation method was ado...