Fast calculation of object infrared spectral scattering based on CUDA

Liang-chao Li; Wu-bin Niu; Zhen-sen Wu

doi:10.1117/12.870711

4 November 2010 Fast calculation of object infrared spectral scattering based on CUDA

Liang-chao Li, Wu-bin Niu, Zhen-sen Wu

Proceedings Volume 7854, Infrared, Millimeter Wave, and Terahertz Technologies; 78541W (2010) https://doi.org/10.1117/12.870711
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

Computational unified device architecture (CUDA) is used for paralleling the spectral scattering calculation from non-Lambertian object of sky and earth background irradiation. The bidirectional reflectance distribution function (BRDF) of five parameter model is utilized in object surface element scattering calculation. The calculation process is partitioned into many threads running in GPU kernel and each thread computes a visible surface element infrared spectral scattering intensity in a specific incident direction, all visible surface elements' intensity are weighted and averaged to obtain the object surface scattering intensity. The comparison of results of the CPU calculation and CUDA parallel calculation of a cylinder shows that the CUDA parallel calculation speed improves more than two hundred times in meeting the accuracy, with a high engineering value.

Citation Download Citation

Liang-chao Li, Wu-bin Niu, and Zhen-sen Wu "Fast calculation of object infrared spectral scattering based on CUDA", Proc. SPIE 7854, Infrared, Millimeter Wave, and Terahertz Technologies, 78541W (4 November 2010); https://doi.org/10.1117/12.870711

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