Single Leaf Area Measurement Using Digital Camera Image
(0) Leaf area index is one of the most important parameters in ecological and environmental studies. This paper presents a method for single leaf area measurement based on the counting of the leaf pixels in digital leaf image. Ini-tially, the target leaf is put on a piece of white paper on which four endpoints of an equal-length and orthogonal cross are printed. A background color threshold is then set to separate the white background pixels from the leaf pixels. After the removal of the background pixels, the leaf pixels are left; and the ratio of the number of leaf pixels to the number of pixels of the reference facet formed by the four control endpoints is equal to that of their areas. The single leaf area can then be computed easily based on this proportional relation. Analysis and experimental results indicate that the proposed method is an efficient and precise method for single leaf or leaf-like object area measurement.
Digital camera Leaf area Area measurement Image processing
Baisong Chen Zhuo Fu Yuchun Pan Jihua Wang Zhixuan Zeng
School of geography, Beijing normal university, Beijing 100875, China National Engineering Research Satellite Environmental Application Center, Ministry of Environmental Protection of the Peoples Rep National Engineering Research Center for Information Technology in Agriculture,Beijing 100097, China
国际会议
南昌
英文
525-530
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）