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Proceedings Paper

Study on method of extracting winter wheat area planted based on spectral features using Terra/MODIS
Author(s): Pifu Cong; Wenpeng Lin; Zheng Niu; Qingyuan Zhang
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Paper Abstract

Terra / MODIS has spectral and spatial resolution advantage over NOAA/AVHRR. A method of automatically extracting winter wheat area planted was set up applying spectral features with overall remote sensing images. In the paper, extracting winter wheat area planted in Beijing China was taken as example. Firstly, according to winter wheat phonological stage, the best time phase of extraction is in the sowing stage and tillering stage. And the two time phases MODIS data are produced in Beijing China. Secondly, according to the spectral and biological characteristic of the crop, the spectral reflectances of MODIS are analyzed. Red, blue, NIR and ESWIR band were selected as working bands, and the enhanced vegetation index (EVI), which is defined by Red, NIR and Blue bands, and EVI21, which is defined by the difference EVI of the two time phase images were used to improve the precision. Finally, ISODATA algorithm in clustering was used with unsupervised classification. To verify the result, Landsat ETM+ was used to verify its precision. The result shows that the precision reaches 96%. This shows that it can obviously improve accuracy of extracting crop area planted with spectral features, and especially the extraction time can be advanced for more than three months compared with traditional method, which thought the best extracting winter wheat area planted time was in March. So the method of spectral features for extracting area planted can fine to meet the operating method for agricultural condition monitoring with remote sensing and information service system.

Paper Details

Date Published: 3 November 2005
PDF: 8 pages
Proc. SPIE 6043, MIPPR 2005: SAR and Multispectral Image Processing, 604303 (3 November 2005); doi: 10.1117/12.652364
Show Author Affiliations
Pifu Cong, Inst. of Remote Sensing Applications, CAS (China)
Wenpeng Lin, Inst. of Remote Sensing Applications, CAS (China)
Zheng Niu, Inst. of Remote Sensing Applications, CAS (China)
Qingyuan Zhang, Inst. of Remote Sensing Applications, CAS (China)


Published in SPIE Proceedings Vol. 6043:
MIPPR 2005: SAR and Multispectral Image Processing
Liangpei Zhang; Jianqing Zhang; Mingsheng Liao, Editor(s)

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