Extra Reading Flashcards
Atmospheric correction:
Apply a correction, eg, 5s or 6s models
Song et al, 2001
Vegetation indices: normalised difference veg index (NDVI)
nIR-R / nIR+R
Removes effect of viewing geometry angles - difficult to compare
Tucker, 1979
Non Lambertian
Cosine correction
Band ratios
Topographic correction
Empirical transformation equation
Pretty
Turbulence
Geometric correction
DN is big when radiance is high
Convert DN to radiance -linear relationship
Radiometric correction
Atmospheric correction:
Simple image based correction eg dark object subtraction
Chavez, 1988
Invasive species:
Significant component of global change, studied many times
Mack et al, 2000
Lass et al, 2005
Underwood et al, 2003
IKONOS imagery
Detecting large, dense tree species
He et al, 2011
Crops approach maturity - position of the chlorophyll absorption edge shifts towards longer wavelengths.
The red shift.
Collins, 1978
Spectral behaviour of a living leaf.
Campbell and Wynne, 2001
Application of vegetation indices:
- Monitoring growth and productivity of crop
- Assist classification to separate vegetation from non-vegetation areas
Campbell and Wynne, 2011
Fuzzy classification:
Fuzzy logic, allowing for partial membership.
0= no membership 1= full membership
Campbell and Wynne, 2011
Lillesand et al, 2008
Estimations of land cover are inadequate and have limited value.
Daily, 1995
Goldammer, 1999
Post disaster mapping:
Problems… Subjective, birds eye view.
Kerle, 2013
Land-use change is projected to have the largest global impact on biodiversity by 2100.
Chapin, 2000.
