@InProceedings{NassuJrMaCaWaZa:2018:ImStRe,
author = "Nassu, Bogdan Tomoyuki and Jr. , Lourival Lippmann and Marchesi,
Bruno and Canestraro, Amanda and Wagner, Rafael and Zarnicinski,
Vanderlei",
affiliation = "{Federal University of Technology - Parana} and {Institutos
Lactec} and {Institutos Lactec} and {Institutos Lactec} and
{Institutos Lactec} and {Companhia Paranaense de Energia}",
title = "Image-based state recognition for disconnect switches in electric
power distribution substations",
booktitle = "Proceedings...",
year = "2018",
editor = "Ross, Arun and Gastal, Eduardo S. L. and Jorge, Joaquim A. and
Queiroz, Ricardo L. de and Minetto, Rodrigo and Sarkar, Sudeep and
Papa, Jo{\~a}o Paulo and Oliveira, Manuel M. and Arbel{\'a}ez,
Pablo and Mery, Domingo and Oliveira, Maria Cristina Ferreira de
and Spina, Thiago Vallin and Mendes, Caroline Mazetto and Costa,
Henrique S{\'e}rgio Gutierrez and Mejail, Marta Estela and Geus,
Klaus de and Scheer, Sergio",
organization = "Conference on Graphics, Patterns and Images, 31. (SIBGRAPI)",
publisher = "IEEE Computer Society",
address = "Los Alamitos",
keywords = "computer vision, image understanding, disconnect switches,
electric power distribution substation automation.",
abstract = "Knowing the state of the disconnect switches in a power
distribution substation is important to avoid accidents, damaged
equipment, and service interruptions. This information is usually
provided by human operators, who can commit errors because of the
cluttered environment, bad weather or lighting conditions, or lack
of attention. In this paper, we introduce an approach for
determining the state of each switch in a substation, based on
images captured by regular pan-tilt-zoom surveillance cameras. The
proposed approach includes noise reduction, image registration
using phase correlation, and classification using a convolutional
neural network and a support vector machine fed with
gradient-based descriptors. By combining information given in an
initial labeling stage with image processing techniques to reduce
variations in viewpoint, our approach achieved 100% accuracy on
experiments performed at a real substation over multiple days. We
also show how modifications to the standard phase correlation
image registration algorithm can make it more robust to lighting
variations, and how SIFT (Scale-Invariant Feature Transform)
descriptors can be made more robust in scenarios where the
relevant objects may be brighter or darker than the background.",
conference-location = "Foz do Igua{\c{c}}u, PR, Brazil",
conference-year = "29 Oct.-1 Nov. 2018",
doi = "10.1109/SIBGRAPI.2018.00062",
url = "http://dx.doi.org/10.1109/SIBGRAPI.2018.00062",
language = "en",
ibi = "8JMKD3MGPAW/3RNK4NP",
url = "http://urlib.net/ibi/8JMKD3MGPAW/3RNK4NP",
targetfile = "PID5544421.pdf",
urlaccessdate = "2024, Apr. 28"
}