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International Journal of Navigation and Observation
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Special Issues
International Journal of Navigation and Observation
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2017
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Article
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Fig 4
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Research Article
Simulation of GNSS Availability in Urban Environments Using a Panoramic Image Dataset
Figure 4
Automatic sky segmentation.
(a)
Grayscale
(b)
Autothresholding
(c)
Morphological closing
(d)
Median filter