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Stereo 3D Crop Maps from Aerial Images

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Paper number  031003,  2003 ASAE Annual Meeting . (doi: 10.13031/2013.13702) @2003
Authors:   Francisco Rovira-Más, Qin Zhang, John F. Reid
Keywords:   Stereovision, 3D crop map, GPS, Inertial sensor, Aerial images, Unmanned helicopter

Geographical Information Systems are moving from 2D to 3D. A three dimensional representation of a field scene can be employed for crop perception and monitoring as well as for autonomous operations inside the field. A compact stereo camera was mounted in both a ground vehicle and an unmanned helicopter to acquire stereo images of a cornfield. Individual images were fused in a global map by transforming local coordinates from the image into global coordinates. Position and orientation for every single image were recorded by a GPS receiver and an inertial sensor respectively. A stereo 3D crop map was generated from aerial images captured from a helicopter. This map showed that three-dimensional maps can be created from the data gathered with a stereoscopic camera, an inertial sensor, and a GPS receiver.

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