Journal article
Geert J. Verhoeven
Archaeological Prospection, vol. 24(2), 2017, pp. 133-140
Archaeological Prospection, vol. 24(2), 2017, pp. 133-140
DOI:
10.1002/arp.1559
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APA
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Verhoeven, G. J. (2017). BRDF and its Impact on Aerial Archaeological Photography. Archaeological Prospection, 24(2), 133–140. https://doi.org/10.1002/arp.1559
Chicago/Turabian
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Verhoeven, Geert J. “BRDF and Its Impact on Aerial Archaeological Photography.” Archaeological Prospection 24, no. 2 (2017): 133–140.
MLA
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Verhoeven, Geert J. “BRDF and Its Impact on Aerial Archaeological Photography.” Archaeological Prospection, vol. 24, no. 2, 2017, pp. 133–40, doi:10.1002/arp.1559.
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@article{verhoeven2017a,
title = {BRDF and its Impact on Aerial Archaeological Photography},
year = {2017},
issue = {2},
journal = {Archaeological Prospection},
pages = {133-140},
volume = {24},
doi = {10.1002/arp.1559},
author = {Verhoeven, Geert J.}
}
Abstract
Despite the arguments in favour of oblique photographs acquired during observer-directed reconnaissance sorties, many aerial archaeologists have extracted much valuable information from verticals generated during total coverage mapping surveys. This paper looks at one of these arguments: the issue of anisotropic surface reflectance, which is responsible for the allegedly superior rendering of (mainly) vegetation and shadow marks when observed from certain oblique viewpoints. However, after a theoretical and practical assessment of the Bidirectional Reflectance Distribution Function (BRDF) of vegetation, it becomes clear that nadir views provide a more than satisfying alternative to the extremes of an oblique approach.
Despite the arguments in favour of oblique photographs acquired during observer-directed reconnaissance sorties, many aerial archaeologists have extracted much valuable information from verticals generated during total coverage mapping surveys. This paper looks at one of these arguments: the issue of anisotropic surface reflectance, which is responsible for the allegedly superior rendering of (mainly) vegetation and shadow marks when observed from certain oblique viewpoints. However, after a theoretical and practical assessment of the Bidirectional Reflectance Distribution Function (BRDF) of vegetation, it becomes clear that nadir views provide a more than satisfying alternative to the extremes of an oblique approach.