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Procedure for simulating divergent-light halos

Gislén, Lars LU (2003) In Applied Optics 42(33). p.6559-6563
Abstract
Divergent-light halos are halos produced by light from nearby light sources, like street lamps being scattered by small crystals of ice floating in the air. The use of "brute-force" Monte Carlo methods to simulate such halos is extremely inefficient, as most scattered rays will not hit the eye of the observer. I present a new procedure for Monte Carlo simulations of divergent-light halos. This procedure uses rotational symmetries to make a selected sampling of events that greatly improves the computational efficiency of the algorithm. We can typically generate a simulated halo display in minutes using a personal computer, several orders of magnitude more rapid than a simple brute-force method. The algorithm can also optionally generate... (More)
Divergent-light halos are halos produced by light from nearby light sources, like street lamps being scattered by small crystals of ice floating in the air. The use of "brute-force" Monte Carlo methods to simulate such halos is extremely inefficient, as most scattered rays will not hit the eye of the observer. I present a new procedure for Monte Carlo simulations of divergent-light halos. This procedure uses rotational symmetries to make a selected sampling of events that greatly improves the computational efficiency of the algorithm. We can typically generate a simulated halo display in minutes using a personal computer, several orders of magnitude more rapid than a simple brute-force method. The algorithm can also optionally generate three-dimensional pictures of divergent-light halo displays. (C) 2003 Optical Society of America (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Applied Optics
volume
42
issue
33
pages
6559 - 6563
publisher
OSA
external identifiers
  • wos:000186612400001
  • pmid:14658455
  • scopus:1842843863
ISSN
2155-3165
language
English
LU publication?
yes
id
44cf1374-2291-42e6-a49f-f9549f76fa3d (old id 295697)
alternative location
http://www.opticsinfobase.org/abstract.cfm?URI=ao-42-33-6559
date added to LUP
2007-09-03 10:28:06
date last changed
2018-01-07 06:07:53
@article{44cf1374-2291-42e6-a49f-f9549f76fa3d,
  abstract     = {Divergent-light halos are halos produced by light from nearby light sources, like street lamps being scattered by small crystals of ice floating in the air. The use of "brute-force" Monte Carlo methods to simulate such halos is extremely inefficient, as most scattered rays will not hit the eye of the observer. I present a new procedure for Monte Carlo simulations of divergent-light halos. This procedure uses rotational symmetries to make a selected sampling of events that greatly improves the computational efficiency of the algorithm. We can typically generate a simulated halo display in minutes using a personal computer, several orders of magnitude more rapid than a simple brute-force method. The algorithm can also optionally generate three-dimensional pictures of divergent-light halo displays. (C) 2003 Optical Society of America},
  author       = {Gislén, Lars},
  issn         = {2155-3165},
  language     = {eng},
  number       = {33},
  pages        = {6559--6563},
  publisher    = {OSA},
  series       = {Applied Optics},
  title        = {Procedure for simulating divergent-light halos},
  volume       = {42},
  year         = {2003},
}