Viewpoint selection is an emerging area in computer graphics with applications in fields such
as scene exploration, image-based modeling, and volume visualization. In particular, best view
selection algorithms are used to obtain the minimum number of views (or images) in order to
understand or model an object or scene better.
In this paper, we present a unified framework for
viewpoint selection and mesh saliency based on the definition of an information channel between
a set of viewpoints (input) and the set of polygons of an object (output). The mutual information
of this channel is shown to be a powerful tool to deal with viewpoint selection, viewpoint stability,
object exploration and viewpoint-based saliency. In addition, viewpoint mutual information is
extended using saliency as an importance factor, showing how perceptual criteria can be incorpo-
rated to our method. Although we use a sphere of viewpoints around an object, our framework is
also valid for any set of viewpoints in a closed scene. A number of experiments demonstrate the
robustness of our approach and the good behavior of the proposed measures.
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