  In this paper we present a new thermographic image database suitable for the
analysis of automatic focus measures. This database consists of 8 different
sets of scenes, where each scene contains one image for 96 different focus
positions. Using this database we evaluate the usefulness of six focus measures
with the goal to determine the optimal focus position. Experimental results
reveal that an accurate automatic detection of optimal focus position is
possible, even with a low computational burden. We also present an acquisition
tool able to help the acquisition of thermal images. To the best of our
knowledge, this is the first study about automatic focus of thermal images.
