Canopy Extraction and Height Estimation of Trees in a Shelter Forest Based on Fusion of an Airborne Multispectral Image and Photogrammetric Point Cloud
Table 1
The band feature parameters of the Micro MCA12 Snap sensor [26].
Band
Wavelength (nm)
Wavewidth (nm)
Band characteristics
1
470
10
Distinguish vegetation and soil rock surface
2
515
10
Green wave peaks in the visible light spectrum
3
550
10
Sensitive to changes in water quality
4
610
10
Initial band of red light in the vegetation spectral reflection curve
5
656
10
Renormalized vegetation index
6
710
10
Red edge band of the vegetation spectral reflection curve
7
760
10
Red edge band of the vegetation spectral reflection curve
8
800
10
Normalized vegetation index
9
830
10
Different types of vegetation
10
860
10
Significantly correlated with plant total chlorophyll content
11
900
20
Calculation of the specific crop water sensitivity index