SECTION TEMPERATURE FIELD RECONSTRUCTION FROM FLAME IMAGES USING ALGEBRAIC RECONSTRUCTION TECHNIQUE

In the study of measurement for the flame temperature field, using the method of image processing, how to reconstruct three-dimensional temperature field from two-dimensional accumulative images of the flame is very important. In this paper, combining with the principles of sector scanning Computer Tomography (CT) and flame radiant transfer equation, the controlling equation of the radiation intensity which decay with projective paths is deduced. After dividing a flame section into M × N grids, temperature and radiant extinction coefficient distribution be solved by iterations to discrete equations simultaneously using Algebraic Reconstruction Technique (ART). Experiment research is proceeding using this method on a burner mixed coal and oil, possible error and improvable direction is also discussed.