2023
Authors
Santos-Campos, M; Tosin, R; Rodrigues, L; Gonçalves, I; Barbosa, C; Martins, R; Santos, F; Cunha, M;
Publication
The 3rd International Electronic Conference on Agronomy
Abstract
2023
Authors
Moura, P; Pinheiro, I; Terra, F; Pinho, T; Santos, F;
Publication
The 3rd International Electronic Conference on Agronomy
Abstract
2024
Authors
Magalhaes, SAC; dos Santos, FN; Moreira, AP; Dias, JMM;
Publication
ROBOTICA
Abstract
Performing tasks in agriculture, such as fruit monitoring or harvesting, requires perceiving the objects' spatial position. RGB-D cameras are limited under open-field environments due to lightning interferences. So, in this study, we state to answer the research question: How can we use and control monocular sensors to perceive objects' position in the 3D task space? Towards this aim, we approached histogram filters (Bayesian discrete filters) to estimate the position of tomatoes in the tomato plant through the algorithm MonoVisual3DFilter. Two kernel filters were studied: the square kernel and the Gaussian kernel. The implemented algorithm was essayed in simulation, with and without Gaussian noise and random noise, and in a testbed at laboratory conditions. The algorithm reported a mean absolute error lower than 10 mm in simulation and 20 mm in the testbed at laboratory conditions with an assessing distance of about 0.5 m. So, the results are viable for real environments and should be improved at closer distances.
2023
Authors
Rodrigues, L; Moura, P; Terra, F; Carvalho, AM; Sarmento, J; dos Santos, FN; Cunha, M;
Publication
The 3rd International Electronic Conference on Agronomy
Abstract
2023
Authors
Pinheiro, I; Santos, F; Valente, A; Cunha, M;
Publication
The 3rd International Electronic Conference on Agronomy
Abstract
2013
Authors
Pinto, M; Santos, F; Moreira, AP; Corves, BJ; Silva, R;
Publication
Journal of Automation and Control Engineering - JOACE
Abstract
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