Robert S. Rand

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Nonlinear spectral mixing occurs when materials are intimately mixed. Intimate mixing is a common characteristic of granular materials such as soils. A linear spectral unmixing inversion applied to a nonlinear mixture will yield subpixel abundance estimates that do not equal the true values of the mixture's components. These aspects of spectral mixture(More)
Dental anxiety may be a serious limiting factor in providing adequate dental treatment. The present study sought to define the prevalence of dental anxiety in a cross-section of young Israeli adults (389 male Israeli army recruits) to correlate anxiety scores with their oral health status and to compare the findings with existing data. The main stimuli(More)
Linear mixtures of materials in a scene often occur because the pixel size of a sensor is relatively large and consequently they contain patches of different materials within them. This type of mixing can be thought of as areal mixing and modeled by a linear mixture model with certain constraints on the abundances. The solution to these models has received(More)
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