  This work covers multiple aspects of overt visual attention on 3D renders:
measurement, projection, visualization, and application to studying the
influence of material appearance on looking behaviour. In the scope of this
work, we ran an eye-tracking experiment in which the observers are presented
with animations of rotating 3D objects. The objects were rendered to simulate
different metallic appearance, particularly smooth (glossy), rough (matte), and
coated gold. The eye-tracking results illustrate how material appearance itself
influences the observer's attention, while all the other parameters remain
unchanged. In order to make visualization of the attention maps more natural
and also make the analysis more accurate, we develop a novel technique of
projection of gaze fixations on the 3D surface of the figure itself, instead of
the conventional 2D plane of the screen. The proposed methodology will be
useful for further studies of attention and saliency in the computer graphics
domain.
