A community-based urban forest inventory using online mapping services and consumer-grade digital images |
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| Authors: | Amr H Abd-Elrahman Mary E Thornhill Michael G Andreu Francisco Escobedo |
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| Institution: | 1. University of Florida, Gulf Coast Research and Education Center – Plant City Campus, 1200 N. Park Road, Plant City, FL 33563-1540, United States;2. University of Florida, School of Forest Resources and Conservation, Bldg 164, Room 19, P. O. Box 110806, Gainesville, FL 32611-0806, United States |
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| Abstract: | Community involvement in gathering and submitting spatially referenced data via web mapping applications has recently been gaining momentum. Urban forest inventory data analyzed by programs such as the i-Tree ECO inventory method is a good candidate for such an approach. In this research, we tested the feasibility of using spatially referenced data gathered and submitted by non-professional individuals through a web application to augment urban forest inventory data. We examined the use of close range photogrammetry solutions of images taken by consumer-grade cameras to extract quantitative metric information such as crown diameter, tree heights and trunk diameters. Several tests were performed to evaluate the accuracy of the photogrammetric solutions and to examine their use in addition to existing aerial image data to supplement or partially substitute for standard i-Tree ECO field measurements. |
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| Keywords: | i-Tree UFORE Web mapping Community involvement Digital image Photogrammetry |
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