Incorporation of a time-dependent thermodynamic model and a radiation propagation model into infrared three-dimensional synthetic image generation

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dc.contributor.author Schott, John en_US
dc.contributor.author Raqueno, Rolando en_US
dc.contributor.author Salvaggio, Carl en_US
dc.date.accessioned 2007-07-05T14:08:12Z en_US
dc.date.available 2007-07-05T14:08:12Z en_US
dc.date.issued 1992-07 en_US
dc.identifier.citation Optical Engineering 31N7 (1992) 1505-15116 en_US
dc.identifier.issn 0091-3286 en_US
dc.identifier.uri http://hdl.handle.net/1850/4231 en_US
dc.description RIT community members may access full-text via RIT Libraries licensed databases: http://library.rit.edu/databases/
dc.description.abstract A model is presented for generation of synthetic images representing what an airborne or satellite thermal infrared imaging sensor would record. The scene and the atmosphere are modeled spectrally with final bandwidth determined by integration over the spectral bandwidth of the sensor (the model will function from 0.25 to 20 rim). The scene is created using a computer-aided-design package to create objects, assign attributes to facets, and assemble the scene. Object temperatures are computed using a thermodynamic model incorporating 24-h worth of meteorological history, as well as pixel specific solar load (i.e., self-shadowing is fully supported). The radiance reaching the sensor is computed using a ray tracer and atmospheric propagation models that vary with wavelength and slant range. Objects can be modeled as specular or diffuse with emissivities (reflectivities) dependent on look angle and wavelength. The resulting images mimic the phenomenology commonly observed by high-resolution thermal infrared sensors to a point where the model can be used as a research tool to evaluate the limitations in our understanding of the thermal infrared imaging process. en_US
dc.description.sponsorship The authors are grateful for the support of the research staff and students in the DIRS lab who have contributed to the programs that have led up to this work, to C. Kitchen for her diligence in assembling this manuscript, and to the reviewers for their thoughtful review and encouragement en_US
dc.language.iso en_US en_US
dc.publisher The International Society for Optical Engineering (SPIE) en_US
dc.relation.ispartofseries vol. 31 en_US
dc.relation.ispartofseries no. 7 en_US
dc.subject Image simulation en_US
dc.subject Infrared en_US
dc.subject Synthetic image generation en_US
dc.title Incorporation of a time-dependent thermodynamic model and a radiation propagation model into infrared three-dimensional synthetic image generation en_US
dc.type Article en_US
dc.identifier.url http://dx.doi.org/10.1117/12.57682

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