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Joint analysis of visible and infrared images

Randolph L. Kirk·Laurence A. Soderblom·Glen E. Cushing·Timothy A. Tituus
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Abstract

Analysis of data combining daytime visible reflected, daytime IR emitted, and nighttime IR emitted images allows us to isolate the physical effects of topography, albedo, and thermal inertia. To a good approximation, these physical influences interact linearly so that maps showing topographic shading, albedo, and relative thermal inertia can be produced by simple algebraic manipulation of the co-registered images. The shading map resembles an airbrush, shaded relief portrayal of the surface, and can be used as the input for quantitative reconstruction of topography by photoclinometry (shape-fromshading). We demonstrate the method with imagery from the NASA 2001 Mars Odyssey Thermal Emission Imaging System (THEMIS), a dataset that could support mapping most of Mars in this way at 100 m resolution .

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Randolph L. Kirk, Laurence A. Soderblom, Glen E. Cushing, Timothy A. Tituus. 2005. Joint analysis of visible and infrared images. https://doi.org/10.14358/pers.71.10.1167

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