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Automating the detection of the corn tassels during owering time is important in corn breeding. To control pollination, after a tassel is visible, the plant should be checked daily for emerging ears. The conventional methods are labor-intensive and time-consuming. In this study, we developed a technique for automatic detecting and locating corn tassel in unmanned aerial vehicle (UAV) imagery with the state-of-the art Faster Region based Convolutional Neural Network (Faster R-CNN). Each raw image was divided into 1000 x 1000 pixels sub-images, and 2000 sub-images were manually annotated for tassel locations with bounding boxes as ground-truth data. 80% of the annotated sub-images were used as training data and the remaining 20% were used for testing. The performance of the trained Faster R-CNN model was evaluated by customized evaluation criteria. The model achieved good performance on tassel detection with mean average precision of 91.78% and F1 score up to 97.98%.
Aziza Al-Zadjali,Yeyin Shi,Stephen Scott,Jitender S. Deogun, andJames Schnable
"Faster R-CNN-based deep learning for locating corn tassels in UAV imagery", Proc. SPIE 11414, Autonomous Air and Ground Sensing Systems for Agricultural Optimization and Phenotyping V, 1141406 (23 April 2020); https://doi.org/10.1117/12.2560596
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Aziza Al-Zadjali, Yeyin Shi, Stephen Scott, Jitender S. Deogun, James Schnable, "Faster R-CNN-based deep learning for locating corn tassels in UAV imagery," Proc. SPIE 11414, Autonomous Air and Ground Sensing Systems for Agricultural Optimization and Phenotyping V, 1141406 (23 April 2020); https://doi.org/10.1117/12.2560596