Publication Details
Resource Efficient Mountainous Skyline Extraction using Shallow Learning
Skyline Extraction, Skyline Detection, Horizon Line, Horizon Curve, Shallow
Learning
Skyline plays a pivotal role in mountainous visual geo-localization and
localization/navigation of planetary rovers/UAVs and virtual/augmented reality
applications. We present a novel mountainous skyline detection approach where we
adapt a shallow learning approach to learn a set of filters to discriminate
between edges belonging to sky-mountain boundary and others coming from different
regions. Unlike earlier approaches, which either rely on extraction of explicit
feature descriptors and their classification, or fine-tuning general scene
parsing deep networks for sky segmentation, our approach learns linear filters
based on local structure analysis. At test time, for every candidate edge pixel,
a single filter is chosen from the set of learned filters based on pixels
structure tensor, and then applied to the patch around it. We then employ dynamic
programming to solve the shortest path problem for the resultant multistage graph
to get the sky-mountain boundary. The proposed approach is computationally faster
than earlier methods while providing comparable performance and is more suitable
for resource constrained platforms e.g., mobile devices, planetary rovers and
UAVs. We compare our proposed approach against earlier skyline detection methods
using four different data sets. Our code is available at
https://github.com/TouqeerAhmad/skylinedetection
@inproceedings{BUT171385,
author="AHMAD, T. and EMAMI, E. and ČADÍK, M. and BEBIS, G.",
title="Resource Efficient Mountainous Skyline Extraction using Shallow Learning",
booktitle="Proceedings of the International Joint Conference on Neural Networks (IJCNN)",
year="2021",
pages="1--9",
publisher="Institute of Electrical and Electronics Engineers",
address="Hoffman Estates",
doi="10.1109/IJCNN52387.2021.9533859",
isbn="978-1-6654-3900-8",
url="http://cadik.posvete.cz/papers/IJCNN21_Skyline_Final.pdf"
}