Using Extraction of Red Edge Position to Validate Consistency of Hyperspectral Imaging and Non-Imaging Data

作者：Wang Da cheng; Zhang Dong yan; Zhao Jin ling; Li Cun jun; Zhu Da zhou; Huang Wen jiang; Li Yu fei; Yang Xiao dong^*

来源：Spectroscopy and Spectral Analysis, 2011, 31(9): 2450-2454.

DOI：10.3964/j.issn.1000-0593(2011)09-2450-05

• Red edge position
• Hyperspectral imaging
• Corn
• Winter wheat
• Leaf

Using Pushbroom imaging spectrometer (PIS) and FieldSpec ProFR2500 (ASD), spectral reflectances of winter wheat and maize at different stages were collected synchronously. In order to validate the reliability of imaging spectral data, the red edge position of hyperspectral data for PIS and ASD were extracted by different algorithms, respectively. The following results were obtained: (1) The original spectrum of both instruments had high inosculation in red light region (670 similar to 740 nm); (2) With the spectra collected under laboratory condition (maize leaf), the extracted red edge position was is concentrated between 700 and 720 nm for the two instruments; (3) With the spectra collected undre field condition (wheat leaf), the extracted red edge position for PIS and ASD were different, the red edge position of PIS data was in 760 nm, while it was in 720 nm for ASD data. The main reason might be that the imaging spectral data were influenced by oxygen absorbtion; (4) the red edge rangeability of PIS and ASD were different, but the trends were the same. The above results could provide some references for hyperspectral imaging data's extensive application.

• 出版日期2011-9
• 单位浙江大学