Estimating the Spectral Reflectance of Natural Imagery Using Color Image Features
Workshop on Applications, Systems, and Algorithms for Image
Josh Hyman, Mark Hansen, Eric
Graham, Deborah Estrin
Relative spectral reﬂectance is an illumination invariant image feature that is
related to many ecological phenomena that are difﬁcult to measure, such as plant
CO2 uptake. We describe a procedure to estimate the relative spectral reﬂectance of
known subject using color image features. Through application, we show that this
procedure produces accurate estimates in the presence of changing ﬁeld conditions.
Using this procedure, we can use imagers as sensors to measure natural phenomena
that cannot be easily measured using any other available sensing modality.