Title :
High Dynamic Range Imaging of Magnetized Sheet Plasma
Author :
Rosario, Leo Mendel D ; Ting, Julie Anne S ; Viloan, Rommel Paulo B ; Suarez, Beverly Anne T ; Villamayor, Michelle Marie S ; Tumlos, Roy B. ; Soriano, Maricor N. ; Ramos, Henry J.
Author_Institution :
Sci. Dept., FEATI Univ., Manila, Philippines
Abstract :
High dynamic range (HDR) imaging was used to obtain a wide intensity map of a magnetized sheet plasma. A set of 12 low dynamic range (LDR) photographs with various shutter speeds (1/200-1/2 s) was captured with an Olympus FE-19 digital camera. The LDR images were processed to recover color channel response functions of the camera needed to produce RGB radiance maps. The HDR image was finally generated from the combined radiance maps via linear tone mapping. By comparison of histograms, the HDR image uses the whole range of intensity values compared with the underexposed and overexposed LDR images.
Keywords :
high-speed optical techniques; plasma diagnostics; plasma magnetohydrodynamics; Olympus FE-19 digital camera; RGB radiance maps; color channel response functions; high-dynamic range imaging; intensity values; magnetized sheet plasma; photographs; shutter speeds; Digital cameras; Dynamic range; Image color analysis; Magnetic resonance imaging; Plasmas; Saturation magnetization; Magnetic confinement; plasma diagnostics;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2011.2163647
