Fig. 9
From: Volcanic smoke reduction in visible and thermal infrared imagery
A steaming ground on the southern side of 62-II crater, Mt. Tokachidake. a An IR thermograph before processing. b A composited TIR image using 26 sheets. Assumed emissivity is 1.0 (instrumental default). No atmospheric corrections applied. The white bar in the right panel indicates an approximate scale of 100Â m. c A photograph whose frame roughly corresponds to the TIR images