期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Segmentation of thermal infrared images of cucumber leaves using K-means clustering for estimating leaf wetness duration 被引量:4
1
作者 Dongmei Wen Aixin Ren +3 位作者 Tao Ji Isabel Maria Flores-Parra Xinting Yang Ming Li 《International Journal of Agricultural and Biological Engineering》 SCIE EI CAS 2020年第3期161-167,共7页
Leaf wetness duration(LWD)is a critical parameter used to predict plant disease,but its determination under actual field conditions is a major challenge.In this study,a method for determining LWD using thermal infrare... Leaf wetness duration(LWD)is a critical parameter used to predict plant disease,but its determination under actual field conditions is a major challenge.In this study,a method for determining LWD using thermal infrared imaging was developed and applied to cucumber plants grown in a solar greenhouse.Thermal images of the plant leaves were captured using an infrared scanning camera,and a leaf wetness area segmentation method consisting of two procedures was applied.First,a color space conversion was performed automatically by an image-processing algorithm.Then,the K-means clustering algorithm was applied to enable the segmentation of the wetness area on the thermal image.Subsequently,to enable overall thermal image analysis,an initial leaf wetness threshold(LWT)of 5%was defined(where wetness values higher than 5%indicated that the leaf was in a wet state).The results of comparative experiments conducted using thermal images of plant leaves captured using an infrared scanning camera and human visual observation indicated that the estimated LWD values were generally higher than the observed LWD values,because slight leaf wetness condensations were overlooked by the human eye but detected by the infrared scanning camera.While these differences were not found to be statistically significant in this study,the proposed method for determining LWD using thermal infrared imaging may provide a new LWD detection method for cucumber and other plants grown in solar greenhouses. 展开更多
关键词 thermal imaging K-means clustering algorithm leaf wetness duration CUCUMBER
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部