3D Temperature Field Reconstruction of Flame from Images

Abstract:

This paper proposes a novel algorithm of 3D temperature field reconstruction for flame. Shape of the flame is determined by visual hull technology first, and then the flame is divided into voxels, 3D temperature field is achieved after computing temperature for each voxel. Extended dynamic range irradiance images are generated in order to minimize the error of temperature field caused by overexposure or underexposure. To further improve the accuracy of the temperature field, integral operation for radiant existence of flame on camera response band is performed. The computational complexity is efficiently reduced with the lookup table between temperature and radiant existence. Calculation of flame temperature field is transformed into a convex optimization problem. Experimental results show that our algorithm is simple and flexible, and easy to implement, the results accord with physical facts

• Periodical: Advanced Materials Research (Volumes 694-697)
• Pages: 2009-2015
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.694-697.2009
• Online since: May 2013
• Authors: Jie Su, Xu Guang Wang*
• Keywords: High Dynamic Range Image, Radiation, Temperature Field, Visual Hull

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