An Accurate Vegetation and Non-Vegetation Differentiation Approach Based on Land Cover Classification

Remote Sensing

Bulent Ayhan¹  Chiman Kwan¹  David Gribben¹  Sergio Bernabe²  Jiang Li³  Antonio Plaza⁴ 

[1] Applied Research LLC, Rockville, MD 20850, USA;Department of Computer Architecture and Automation, Complutense University of Madrid, 28040 Madrid, Spain;Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, VA 23529, USA;Department of Technology of Computers and Communications, University of Extremadura, 10003 Cáceres, Spain;

关键词: land cover classification;    hyperspectral;    EMAP;    synthetic bands;    NDVI;    LiDAR;   

DOI  :  10.3390/rs12233880

来源: DOAJ

【 摘 要 】

Accurate vegetation detection is important for many applications, such as crop yield estimation, land cover land use monitoring, urban growth monitoring, drought monitoring, etc. Popular conventional approaches to vegetation detection incorporate the normalized difference vegetation index (NDVI), which uses the red and near infrared (NIR) bands, and enhanced vegetation index (EVI), which uses red, NIR, and the blue bands. Although NDVI and EVI are efficient, their accuracies still have room for further improvement. In this paper, we propose a new approach to vegetation detection based on land cover classification. That is, we first perform an accurate classification of 15 or more land cover types. The land covers such as grass, shrub, and trees are then grouped into vegetation and other land cover types such as roads, buildings, etc. are grouped into non-vegetation. Similar to NDVI and EVI, only RGB and NIR bands are needed in our proposed approach. If Laser imaging, Detection, and Ranging (LiDAR) data are available, our approach can also incorporate LiDAR in the detection process. Results using a well-known dataset demonstrated that the proposed approach is feasible and achieves more accurate vegetation detection than both NDVI and EVI. In particular, a Support Vector Machine (SVM) approach performed 6% better than NDVI and 50% better than EVI in terms of overall accuracy (OA).

【 授权许可】

Unknown