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Author: Tom McClintock 1207 Seminole Hwy Phone: 608 263-5534 This paper presents research on using aerial photography with GIS/GPS for large-scale vegetation mapping of ecological restoration at the UW-Madison arboretum. Creating orthophotography from historic and recent aerial photography using software developed at the UW-Madison Environmental Remote Sensing Center provides images for more accurate and efficient mapping of vegetation and detecting changes over time. Aerial photos taken at different times of year and at different scales, and four types of film are compared for effectiveness in detecting and monitoring vegetation including nine troublesome plant species. Various interpretation methods are compared including (1) manually digitizing from original photos, (2) classifying scanned photos using image processing software, (3) on-screen digitizing of scanned unrectified and orthorectified photos, and (4) using GPS for mapping and ground control. |
