  In this paper we summarize several applications based on thermal imaging. We
emphasize the importance of emissivity adjustment for a proper temperature
measurement. A new set of face images acquired at different emissivity values
with steps of 0.01 is also presented and will be distributed for free for
research purposes. Among the utilities, we can mention: a) the possibility to
apply corrections once an image is acquired with a wrong emissivity value and
it is not possible to acquire a new one; b) privacy protection in thermal
images, which can be obtained with a low emissivity factor, which is still
suitable for several applications, but hides the identity of a user; c) image
processing for improving temperature detection in scenes containing objects of
different emissivity.
