Detection of early plant stress responses in hyperspectral images

被引:229
作者
Behmann, Jan [1 ]
Steinruecken, Joerg [1 ]
Pluemer, Lutz [1 ]
机构
[1] Univ Bonn, Inst Geodesy & Geoinformat, Dept Geoinformat, Bonn, Germany
关键词
Hyper spectral; Learning; Modelling; Agriculture; Crop; Close range; LEAF PIGMENT CONTENT; CHLOROPHYLL CONTENT; WATER-STRESS; SPECTRAL REFLECTANCE; VEGETATION INDEXES; SENESCENCE; CROP; LEAVES; FLUORESCENCE; PRODUCTIVITY;
D O I
10.1016/j.isprsjprs.2014.03.016
中图分类号
P9 [自然地理学];
学科分类号
0705 ; 070501 ;
摘要
Early stress detection in crop plants is highly relevant, but hard to achieve. We hypothesize that close range hyperspectral imaging is able to uncover stress related processes non-destructively in the early stages which are invisible to the human eye. We propose an approach which combines unsupervised and supervised methods in order to identify several stages of progressive stress development from series of hyperspectral images. Stress of an entire plant is detected by stress response levels at pixel scale. The focus is on drought stress in barley (Hordeum vulgare). Unsupervised learning is used to separate hyperspectral signatures into clusters related to different stages of stress response and progressive senescence. Whereas all such signatures may be found in both, well watered and drought stressed plants, their respective distributions differ. Ordinal classification with Support Vector Machines (SVM) is used to quantify and visualize the distribution of progressive stages of senescence and to separate well watered from drought stressed plants. For each senescence stage a distinctive set of most relevant Vegetation Indices (VIs) is identified. The method has been applied on two experiments involving potted barley plants under well watered and drought stress conditions in a greenhouse. Drought stress is detected up to ten days earlier than using NDVI. Furthermore, it is shown that some VIs have overall relevance, while others are specific to particular senescence stages. The transferability of the method to the field is illustrated by an experiment on maize (Zea mays). (C) 2014 International Society for Photogrammetry and Remote sensing, Inc. (ISPRS) Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:98 / 111
页数:14
相关论文
共 82 条
[1]  
Achanta R., 2010, EPFL Technical Report 149300, V6, P15
[2]  
Agresti A., 2002, CATEGORICAL DATA ANA, DOI [10.1002/0471249688, DOI 10.1002/0471249688]
[3]   Hyperspectral remote sensing of plant pigments [J].
Blackburn, George Alan .
JOURNAL OF EXPERIMENTAL BOTANY, 2007, 58 (04) :855-867
[4]   PLANT PRODUCTIVITY AND ENVIRONMENT [J].
BOYER, JS .
SCIENCE, 1982, 218 (4571) :443-448
[5]   On the relation between NDVI, fractional vegetation cover, and leaf area index [J].
Carlson, TN ;
Ripley, DA .
REMOTE SENSING OF ENVIRONMENT, 1997, 62 (03) :241-252
[6]   Imaging techniques and the early detection of plant stress [J].
Chaerle, L ;
Van Der Straeten, D .
TRENDS IN PLANT SCIENCE, 2000, 5 (11) :495-501
[7]   SUPPORT-VECTOR NETWORKS [J].
CORTES, C ;
VAPNIK, V .
MACHINE LEARNING, 1995, 20 (03) :273-297
[8]   Estimating the foliar biochemical concentration of leaves with reflectance spectrometry testing the Kokaly and Clark methodologies [J].
Curran, PJ ;
Dungan, JL ;
Peterson, DL .
REMOTE SENSING OF ENVIRONMENT, 2001, 76 (03) :349-359
[9]   A new reflectance index for remote sensing of chlorophyll content in higher plants:: Tests using Eucalyptus leaves [J].
Datt, B .
JOURNAL OF PLANT PHYSIOLOGY, 1999, 154 (01) :30-36
[10]   Novel crop science to improve yield and resource use efficiency in water-limited agriculture [J].
Davies, W. J. ;
Zhang, J. ;
Yang, J. ;
Dodd, I. C. .
JOURNAL OF AGRICULTURAL SCIENCE, 2011, 149 :123-131