The temporal behavior of the contrast in a thermal image is related to the temporal change of the radiance statistics over such an image. It is shown that, due to the statistical distribution of the thermal properties over an object, the statistics of the radiance vary with time during temporal changes in the heat balance. In specific cases the contrast of a thermal image can obtain a transient maxima larger than the steady-state values.
© 1985 Optical Society of America
Nissim Ben-Yosef and Kalman Wilner, "Temporal behavior of thermal images," Appl. Opt. 24, 284-286 (1985)