Noncontact Estimation of Qualitative Flow Velocity in Nasal Breathing by Using Far Infrared Imaging

In this research, we propose a method for non-contact estimation of qualitative flow velocity in nasal breathing by using far infrared (FIR) imaging. Our proposed method consist of two kind of function: estimation of the strength of flow velocity and extraction of the region including nasal cavity on FIR images. According to the result of experiments, the accuracy of our proposed estimation was ranged from 67% to 100 %. Moreover, the accuracy of our proposed extraction was ranged from 73% to 82%.