Abstract: A method, system and a computer readable medium for monitoring a person. The method may include (a) acquiring a group of other images and acquiring a group of LWIR of a face of the person. The LWIR imager is mechanically coupled to the other imager has a lower resolution, (b) determining locations of a facial feature of the person within the groups of other and LWIR images, by applying a compensation process for compensating for differences between the acquiring of the group of LWIR images and the acquiring of the group of other images; (c) applying a thermal dynamic analysis on pixels of the facial feature within the LWIR images; and (d) determining, based on an outcome of the thermal dynamic analysis, at least one parameter of the person.