Estimation of vertical surface directions in outdoor environments on changes of the incident angle of sunlight in time series of observation images

Kyota Aoki; Teppei Yamamura

doi:10.1117/12.2064057

16 April 2014 Estimation of vertical surface directions in outdoor environments on changes of the incident angle of sunlight in time series of observation images

Kyota Aoki, Teppei Yamamura

Author Affiliations +

Proceedings Volume 9159, Sixth International Conference on Digital Image Processing (ICDIP 2014); 91590A (2014) https://doi.org/10.1117/12.2064057
Event: Sixth International Conference on Digital Image Processing, 2014, Athens, Greece

Abstract

This paper proposes a method to estimate the directions of vertical surfaces in outdoor environments based on the changes of the incident angle of the sunlight in a series of observation images caught with a fixed camera. This method uses an interaction between a time when an incidence angle of the sunlight for every direction of a vertical surface is at the minimum and a time when a brightness of every pixel in the series of observation image is at the maximum. This method is not robust about the weather changes. This paper introduces the method integrating multi-day estimations. With this multi-day integration, the proposed direction estimation method is robust about the weather changes. And then, this paper shows experiments on real out-door images.

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Kyota Aoki and Teppei Yamamura "Estimation of vertical surface directions in outdoor environments on changes of the incident angle of sunlight in time series of observation images", Proc. SPIE 9159, Sixth International Conference on Digital Image Processing (ICDIP 2014), 91590A (16 April 2014); https://doi.org/10.1117/12.2064057

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