Application of High Dynamic Range (HDR) Imaging for Improved Quantitative Environmental Monitoring
Abstract
Standard digital cameras are widely used for remote sensing and monitoring of local environmental conditions and phenomena, including vegetation phenology and atmospheric conditions (clouds, dust, etc.). One challenge frequently confronted in these applications is the consistent acquisition of images with suitable exposures in which the target of interest is neither saturated or underexposed. The problem is attributable to the inherent limitations of a camera’s dynamic range and the broad range of brightness that can be observed in the camera’s field of view because of variable illumination and shadow conditions. High dynamic range (HDR) imaging techniques provide a potentially effective means to overcome this challenge and to enable improved quantitative applications for in situ environmental sensing and monitoring. This paper describes the HDR methods and initial results from their application to automated digital camera systems for measuring the sky distribution of photosynthetically active radiation (PAR) and for detecting and monitoring changes in landscape phenology.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2010
- Bibcode:
- 2010AGUFM.B41C0323D
- Keywords:
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- 0452 BIOGEOSCIENCES / Instruments and techniques;
- 0480 BIOGEOSCIENCES / Remote sensing