A numerical approach to the computation of light propagation through turbid media: application to the evaluation of lighted exit signs
A general event-based Monte Carlo method is presented for numerical quantitative and qualitative analyses relevant to the propagation of light through turbid media such as smoke mixtures and fog. The application of interest is the visualization of lighted safety-related signs seen through fire-cause...
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| Veröffentlicht in: | IEEE transactions on industry applications 1993-05, Vol.29 (3), p.661-669 |
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| container_end_page | 669 |
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| container_title | IEEE transactions on industry applications |
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| creator | Roysam, B. Cohen, A.R. Getto, P.H. Boyce, P.R. |
| description | A general event-based Monte Carlo method is presented for numerical quantitative and qualitative analyses relevant to the propagation of light through turbid media such as smoke mixtures and fog. The application of interest is the visualization of lighted safety-related signs seen through fire-caused smoke. The scattering profiles for individual particles are obtained using a laser-based instrument. These are used to numerically model realistic complex, inhomogeneous, and time-varying media for which analytic methods are unavailable and/or intractable. The approach results in high-quality visualizations instead of the usual set of extinction coefficients. The computations are parallelizable on a massive scale and are performed rapidly using a Connection Machine with 32768 processing elements. Experimental results to demonstrate the effectiveness and usefulness of the overall approach are presented.< > |
| doi_str_mv | 10.1109/28.222442 |
| format | Article |
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Electrical power engineering</subject><subject>Exact sciences and technology</subject><subject>Extinction coefficients</subject><subject>Instruments</subject><subject>Laser modes</subject><subject>Light scattering</subject><subject>Miscellaneous</subject><subject>Nonhomogeneous media</subject><subject>Numerical models</subject><subject>Optical propagation</subject><subject>Particle scattering</subject><subject>Various equipment and components</subject><subject>Visualization</subject><issn>0093-9994</issn><issn>1939-9367</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1993</creationdate><recordtype>article</recordtype><recordid>eNqN0TtLJTEUwPGwuLBXd4ttrVKIYDFuXpO5sRPxBYKN1sOZzMm9kXmZZGT9An5uI3MR7KwCyS9_SA4hfzk75ZyZf2J9KoRQSvwgK26kKYzU1R5ZMWZkYYxRv8h-jE-McVVytSJv53SYewzeQkdhmsIIdkvTSNMWqR37aU6Q_DjQ0dHOb7aJZjLBZtlM2zDOm-zn0PiW9th6OPvIdLm3iKWEL9DNX0PYUvzvE41-M8Tf5KeDLuKf3XpAHq8uHy5uirv769uL87vCSlmlwmloSlNixQ22JbpGK8Fap01jmShtiwKUazgHVjGrW80c41gKtQYNCoyRB-R46eZXPM8YU937aLHrYMBxjrUwSgqlvwHXihsmqwxPFmjDGGNAV0_B9xBea87qj5FkWi8jyfZoF4WY_9sFGKyPnxfUWmghZGaHC_OI-Hm6a7wDVzeVwQ</recordid><startdate>19930501</startdate><enddate>19930501</enddate><creator>Roysam, B.</creator><creator>Cohen, A.R.</creator><creator>Getto, P.H.</creator><creator>Boyce, P.R.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope><scope>7TB</scope><scope>FR3</scope></search><sort><creationdate>19930501</creationdate><title>A numerical approach to the computation of light propagation through turbid media: application to the evaluation of lighted exit signs</title><author>Roysam, B. ; Cohen, A.R. ; Getto, P.H. ; Boyce, P.R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c337t-f6ab595e719ed5efb6420df69bc025cde2a4fb11a070c6d60f01e5248a6a4a993</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1993</creationdate><topic>Applied sciences</topic><topic>Concurrent computing</topic><topic>Electrical engineering. Electrical power engineering</topic><topic>Exact sciences and technology</topic><topic>Extinction coefficients</topic><topic>Instruments</topic><topic>Laser modes</topic><topic>Light scattering</topic><topic>Miscellaneous</topic><topic>Nonhomogeneous media</topic><topic>Numerical models</topic><topic>Optical propagation</topic><topic>Particle scattering</topic><topic>Various equipment and components</topic><topic>Visualization</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Roysam, B.</creatorcontrib><creatorcontrib>Cohen, A.R.</creatorcontrib><creatorcontrib>Getto, P.H.</creatorcontrib><creatorcontrib>Boyce, P.R.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Engineering Research Database</collection><jtitle>IEEE transactions on industry applications</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Roysam, B.</au><au>Cohen, A.R.</au><au>Getto, P.H.</au><au>Boyce, P.R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A numerical approach to the computation of light propagation through turbid media: application to the evaluation of lighted exit signs</atitle><jtitle>IEEE transactions on industry applications</jtitle><stitle>TIA</stitle><date>1993-05-01</date><risdate>1993</risdate><volume>29</volume><issue>3</issue><spage>661</spage><epage>669</epage><pages>661-669</pages><issn>0093-9994</issn><eissn>1939-9367</eissn><coden>ITIACR</coden><abstract>A general event-based Monte Carlo method is presented for numerical quantitative and qualitative analyses relevant to the propagation of light through turbid media such as smoke mixtures and fog. The application of interest is the visualization of lighted safety-related signs seen through fire-caused smoke. The scattering profiles for individual particles are obtained using a laser-based instrument. These are used to numerically model realistic complex, inhomogeneous, and time-varying media for which analytic methods are unavailable and/or intractable. The approach results in high-quality visualizations instead of the usual set of extinction coefficients. The computations are parallelizable on a massive scale and are performed rapidly using a Connection Machine with 32768 processing elements. Experimental results to demonstrate the effectiveness and usefulness of the overall approach are presented.< ></abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/28.222442</doi><tpages>9</tpages></addata></record> |
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| ispartof | IEEE transactions on industry applications, 1993-05, Vol.29 (3), p.661-669 |
| issn | 0093-9994 1939-9367 |
| language | eng |
| recordid | cdi_crossref_primary_10_1109_28_222442 |
| source | IEEE Electronic Library (IEL) |
| subjects | Applied sciences Concurrent computing Electrical engineering. Electrical power engineering Exact sciences and technology Extinction coefficients Instruments Laser modes Light scattering Miscellaneous Nonhomogeneous media Numerical models Optical propagation Particle scattering Various equipment and components Visualization |
| title | A numerical approach to the computation of light propagation through turbid media: application to the evaluation of lighted exit signs |
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