From the methodology developed in Chapter 1, we have that in the absence of a priori knowledge about regions of interest, a rational system for progressive transmission chooses at any truncation time among alternative SOTs to avoid certain forms of behavioral inconsistency. But it is not clear how to pick the risk aversion parameter r for different image content. In fact, even though the problem of estimating the parameter r is a key issue, Sec. 2.5 was only interested in demonstrating that, based upon an acceptable predictor for visual distinctness from digital imagery, risk-prone systems as well as those with strong risk aversion appear incapable of attaining the quality of reconstructions that can be achieved with moderate risk-averse behavior (i.e., r around 0).
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