Abstract
Hemispherical photography is commonly used in studies investigating the light environment beneath the forest canopy. This paper documents a methodology to adapt a standard digital camera to take hemispherical images in the near infra-red. These images can then be post processed to calculate sky-view factors, branch/bole-view factors and foliage-view factors. The further potential of the instrument is then demonstrated by combining the near infra-red images with standard visible images to produce a hemispherical NDVI image. Further discussion is also given to the potential applicability of the techniques above the forest canopy. (c) 2007 Elsevier B.V. All rights reserved.
Original language | English |
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Pages (from-to) | 151-156 |
Number of pages | 6 |
Journal | Agricultural and Forest Meteorology |
Volume | 143 |
DOIs | |
Publication status | Published - 16 Mar 2007 |
Keywords
- near infra-red
- view factors
- hemispherical fisheye
- NDVI