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Hughes phenomenon in the spatial resolution enhancement of low resolution images and derivation of selection rule for high resolution images

The Landsat TM sensor for thermal infrared measurements, band 6, has lower resolution than those of other six bands. Nishii et al. (1996) proposed a statistical method to improve band 6 by the linear combination of the other six bands' data. In this case, the authors observe that a subset of the high-resolution bands provide a better predictor than that based on all high-resolution bands. This may be a Hughes phenomenon. The authors propose the way to select the best subset of high-resolution bands based on the information theoretic criterion called AIC.