Ground-based remote sensing with long lens video camera for upper-stem diameter and other tree crown measurements

Abstract

This paper demonstrates how a digital video camera with a long lens can be used with pulse laser ranging in order to collect very large-scale tree crown measurements. The long focal length of the camera lens provides the magnification required for precise viewing of distant points with the trade-off of spatial coverage. Multiple video frames are mosaicked into a single super-resolution image to increase the spatial coverage. Upper-stem diameters are the examples given here, but the technique may be generalized to other dimensions of interest.

Citation

Clark, Neil A.; Lee, Sang-Mook. 2004. Ground-based remote sensing with long lens video camera for upper-stem diameter and other tree crown measurements. In: Remote sensing for field users: Proceedings of the 10th Forest Service remote sensing applications conference. 1-57083-075-4. Salt Lake City, UT: American Society for Photogrammetry and Remote Sensing: 8