GLA 2.0 is imaging software used to extract forest canopy structure and gap light transmission indices from true-color hemispherical photographs
- Scientific software (Windows 95/98/NT/7/8/10) to import, display, and analyze digital hemispherical canopy images.
- Includes "region of interest" image-processing functions: e.g., image threshold, brightness, contrast, colour fill, etc...
- Designed to process large numbers of photographs taken from numerous sites - individual configurations can be created for different camera lenses and orientations, regional climatic patterns and growing seasons, and topographic settings.
- Extracts canopy structure data (gap fraction, canopy openness, effective LAI) and gap light transmission indices. Also provides a number of stand-alone utilities that will compute and display daily extraterrestrial radiation, sunfleck duration and frequency distribution, solar positions and intensities, and sky-region brightness.
- view screenshot
Dr. Pamela Sallaway, Spatial Solutions, Inc., Victoria, B.C.
Dimitri Marinakis, University of Victoria, Victoria, B.C.
Forest Renewal BC Research Grant to:
Dr. Kenneth P. Lertzman, Simon Fraser University, Burnaby, B.C.
Copyright (c) 1999: Simon Fraser University, British Columbia, and the Institute of Ecosystem Studies, New York.