Rendering Ghost Ships and Other Phenomena in Arctic Atmospheres
The unique characteristics of the arctic atmosphere make for very interesting effects that cannot be seen anywhere else in the planet. The extremely cold temperatures, along with the existence of inversion layers in the temperature gradients, make the medium highly inhomogeneous. Its properties, inc...
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Václav Skala - UNION Agency
2005
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ftuniwestbohemia:oai:dspace5.zcu.cz:11025/11213 2023-05-15T14:42:02+02:00 Rendering Ghost Ships and Other Phenomena in Arctic Atmospheres Gutierrez, Diego Seron, Francisco J. Muñoz, Adolfo Anson, Oscar Skala, Václav 2005 4 s. application/pdf http://hdl.handle.net/11025/11213 http://wscg.zcu.cz/WSCG2005/Papers_2005/Short/!WSCG2005_Short_Proceedings_Final.pdf en eng Václav Skala - UNION Agency WSCG '2005: Short Papers WSCG '2005: Short Papers: The 13-th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2005 in co-operation with EUROGRAPHICS, p. 73-76. 80-903100-9-5 http://wscg.zcu.cz/WSCG2005/Papers_2005/Short/!WSCG2005_Short_Proceedings_Final.pdf http://hdl.handle.net/11025/11213 © Václav Skala - UNION Agency openAccess sledování paprsku nehomogenní média arktická atmosféra ray tracing inhomogeneous media arctic atmosphere konferenční příspěvek conferenceObject publishedVersion Peer-reviewed 2005 ftuniwestbohemia 2023-02-05T19:15:04Z The unique characteristics of the arctic atmosphere make for very interesting effects that cannot be seen anywhere else in the planet. The extremely cold temperatures, along with the existence of inversion layers in the temperature gradients, make the medium highly inhomogeneous. Its properties, including the index of refraction that rules the behavior of light, are no longer constant. As a consequence, light rays get bent while traversing the atmosphere, and the result is some spectacular phenomena; several examples are the arctic mirages (that have probably given rise to numerous ghost ship legends), the Fata Morgana or the Novaya-Zemlya effect. We present here an implementation of a ray tracer that can render all these effects, thus depicting phenomena never ray-traced before, as far as the authors know. We first build an accurate temperature profile for the arctic atmosphere, based on experimental data, then calculate the curved paths of the light rays as the index of refraction changes as a function of temperature, by solving the physically-based differential equation that describes their trajectory. The scenes are modelled using real data for the Earth and Sun dimensions and relative distance, thus maintaining accuracy in the results obtained. Conference Object Arctic Novaya Zemlya University of West Bohemia Digital Library Arctic Mirages ENVELOPE(141.446,141.446,-66.797,-66.797) |
institution |
Open Polar |
collection |
University of West Bohemia Digital Library |
op_collection_id |
ftuniwestbohemia |
language |
English |
topic |
sledování paprsku nehomogenní média arktická atmosféra ray tracing inhomogeneous media arctic atmosphere |
spellingShingle |
sledování paprsku nehomogenní média arktická atmosféra ray tracing inhomogeneous media arctic atmosphere Gutierrez, Diego Seron, Francisco J. Muñoz, Adolfo Anson, Oscar Rendering Ghost Ships and Other Phenomena in Arctic Atmospheres |
topic_facet |
sledování paprsku nehomogenní média arktická atmosféra ray tracing inhomogeneous media arctic atmosphere |
description |
The unique characteristics of the arctic atmosphere make for very interesting effects that cannot be seen anywhere else in the planet. The extremely cold temperatures, along with the existence of inversion layers in the temperature gradients, make the medium highly inhomogeneous. Its properties, including the index of refraction that rules the behavior of light, are no longer constant. As a consequence, light rays get bent while traversing the atmosphere, and the result is some spectacular phenomena; several examples are the arctic mirages (that have probably given rise to numerous ghost ship legends), the Fata Morgana or the Novaya-Zemlya effect. We present here an implementation of a ray tracer that can render all these effects, thus depicting phenomena never ray-traced before, as far as the authors know. We first build an accurate temperature profile for the arctic atmosphere, based on experimental data, then calculate the curved paths of the light rays as the index of refraction changes as a function of temperature, by solving the physically-based differential equation that describes their trajectory. The scenes are modelled using real data for the Earth and Sun dimensions and relative distance, thus maintaining accuracy in the results obtained. |
author2 |
Skala, Václav |
format |
Conference Object |
author |
Gutierrez, Diego Seron, Francisco J. Muñoz, Adolfo Anson, Oscar |
author_facet |
Gutierrez, Diego Seron, Francisco J. Muñoz, Adolfo Anson, Oscar |
author_sort |
Gutierrez, Diego |
title |
Rendering Ghost Ships and Other Phenomena in Arctic Atmospheres |
title_short |
Rendering Ghost Ships and Other Phenomena in Arctic Atmospheres |
title_full |
Rendering Ghost Ships and Other Phenomena in Arctic Atmospheres |
title_fullStr |
Rendering Ghost Ships and Other Phenomena in Arctic Atmospheres |
title_full_unstemmed |
Rendering Ghost Ships and Other Phenomena in Arctic Atmospheres |
title_sort |
rendering ghost ships and other phenomena in arctic atmospheres |
publisher |
Václav Skala - UNION Agency |
publishDate |
2005 |
url |
http://hdl.handle.net/11025/11213 http://wscg.zcu.cz/WSCG2005/Papers_2005/Short/!WSCG2005_Short_Proceedings_Final.pdf |
long_lat |
ENVELOPE(141.446,141.446,-66.797,-66.797) |
geographic |
Arctic Mirages |
geographic_facet |
Arctic Mirages |
genre |
Arctic Novaya Zemlya |
genre_facet |
Arctic Novaya Zemlya |
op_relation |
WSCG '2005: Short Papers WSCG '2005: Short Papers: The 13-th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2005 in co-operation with EUROGRAPHICS, p. 73-76. 80-903100-9-5 http://wscg.zcu.cz/WSCG2005/Papers_2005/Short/!WSCG2005_Short_Proceedings_Final.pdf http://hdl.handle.net/11025/11213 |
op_rights |
© Václav Skala - UNION Agency openAccess |
_version_ |
1766313699182641152 |