Methods for atmospheric calibration of reflected and thermal images using ground truth are briefly reviewed. These methods set the stage for consideration of `in-scene' and atmospheric propagation modeling methods. The emphasis is on placing the `in- scene' and radiation propagation methods in a common radiometric framework and discussing the strengths and weaknesses of the various methods. The methods treated include multiple altitude, multiple look angle, multiple bandpass, and LOWTRAN-style radiation propagation models for calibration of thermal infrared airborne and/or satellite systems. A limited treatment of selected methods for calibration of atmospheric effects in the reflected region is also included.
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