{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,17]],"date-time":"2026-06-17T13:02:08Z","timestamp":1781701328691,"version":"3.54.5"},"reference-count":35,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2010,1,11]],"date-time":"2010-01-11T00:00:00Z","timestamp":1263168000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Payload size and weight are critical factors for small Unmanned Aerial Vehicles (UAVs). Digital color-infrared photographs were acquired from a single 12-megapixel camera that did not have an internal hot-mirror filter and had a red-light-blocking filter in front of the lens, resulting in near-infrared (NIR), green and blue images. We tested the UAV-camera system over two variably-fertilized fields of winter wheat and found a good correlation between leaf area index and the green normalized difference vegetation index (GNDVI). The low cost and very-high spatial resolution associated with the camera-UAV system may provide important information for site-specific agriculture.<\/jats:p>","DOI":"10.3390\/rs2010290","type":"journal-article","created":{"date-parts":[[2010,1,13]],"date-time":"2010-01-13T04:04:25Z","timestamp":1263355465000},"page":"290-305","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":396,"title":["Acquisition of NIR-Green-Blue Digital Photographs from Unmanned Aircraft for Crop Monitoring"],"prefix":"10.3390","volume":"2","author":[{"suffix":"Jr.","given":"E. Raymond","family":"Hunt","sequence":"first","affiliation":[{"name":"USDA-Agricultural Research Service, Hydrology and Remote Sensing Laboratory, Building 007 Room 104 BARC-West, 10300 Baltimore Avenue, Beltsville, MD 20705, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"W. Dean","family":"Hively","sequence":"additional","affiliation":[{"name":"USDA-Agricultural Research Service, Hydrology and Remote Sensing Laboratory, Building 007 Room 104 BARC-West, 10300 Baltimore Avenue, Beltsville, MD 20705, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stephen J.","family":"Fujikawa","sequence":"additional","affiliation":[{"name":"IntelliTech Microsystems, Inc., 2138 Priest Bridge Court, Suite 3, Crofton, MD 21114, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David S.","family":"Linden","sequence":"additional","affiliation":[{"name":"DSL Consulting, Inc., 7611 Kingfisher Court, Dexter, MI 48130, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Craig S. 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