Non-contact subject monitoring

Provided is a computer implemented method (100) suitable for monitoring at least one skin region of a subject capable of moving relative to a source of ambient light. A sequence of video frames is received (102) of the subject. The sequence of video frames was captured while a light emitter provided a varying illumination, e.g. a pulsed illumination, to the subject. The sequence of video frames is then used to generate (106, 110) a first and second ambient light corrected image which are each then segmented (108, 112) to identify at least one skin region. Further provided is a computer program product for implementing the method, and a system for monitoring the at least one skin region.