“…The infrared (IR) imaging techniques are quite useful for pre-and postclinical evaluation, since these techniques are relatively fast and can be utilized repetitively for longer span without the risk of radiation. At present, IR imaging techniques are widely used in many biomedical applications, viz., detection of early skin cancer (Bonmarin and Le Gal, 2014a;Bhowmik et al, 2014b) and breast cancer (Lawson, 1956), estimation of skin temperature oscillation due to subsurface blood flow (Sagaidachnyi et al, 2014), estimation of burn injury (Cole et al, 1990), monitoring the efficacy of drugs (Hintersteiner et al, 2005) and treatment (Santa Cruz et al, 2009), vascular disorders (Bagavathiappan et al, 2009), pains (Gulevich et al, 1997), monitoring the thermal response of skin surface during photo-thermal ablation of subsurface tumor (Sajjadi et al, 2008;Paul et al, 2014), aftermaths of cryo-therapy (Costello et al, 2012), evaluation of the state of biological implant (Yang et al, 2009), detection and characterization of subsurface chromophores in biological materials (Milner et al, 1995;Milner et al, 1996;Telenkov et al, 2002), estimation of increasing fat thickness (Bhowmik et al, 2015), thermal tomography (Shi et al, 2014), and many more (Diakides and Bronzino, 2007). The advancement and deeper understanding of bio-optics, digital manipulation, image processing, thermal and physiological characteristics of human body made the thermography a capable technique to evaluate the subsurface changes efficiently.…”