System and method for evaluating vascular health condition of a person using thermal imaging

A system for evaluating a vascular health condition of a subject, the system comprising:

• a set of thermal sensors for capturing one or more thermal images and/or videos of at least one body part of the subject;
• and
• a processing engine operatively coupled to the set of thermal sensors, and comprising one or more processors coupled to a memory, the memory storing a set of instructions executable by the one or more processors to:
• receive a set of data packets associated with the captured one or more thermal images and/or videos from the set of thermal sensors;
• in response to the receipt of the set of data packets, detect, using one or more detection algorithms, a predefined region of the at least one body part of the subject in each frame of the captured one or more thermal images and/or videos;
• segment one or more portions from the detected predefined region in each frame of the captured one or more thermal images and/or videos based on a difference between a thermal intensity along one or more blood vessels and a thermal intensity in other regions of the one or more segmented portions;
• identify a region of interest comprising the one or more blood vessels in the one or more segmented portions in each frame of the captured one or more thermal images and/or videos;
• extract one or more pixel values, representing a set of biosignals, from each frame of the captured one or more thermal images and/or videos based on the identified region of interest;
• determine one or more parameters associated with vascular functions and hemodynamics of the subject based on the extracted one or more pixel values representing the set of biosignals;
• compare the determined one or more parameters associated with the vascular functions and hemodynamics with a predetermined set of reference parameters;
• evaluate the vascular health condition of the subject based on deviation of the determined one or more parameters with respect to the predetermined set of reference parameters on the basis of the comparison, wherein the evaluation of the vascular health condition of the subject considers demographics and medical history of the subject along with the determined one or more parameters;
• wherein one or more frames from the captured one or more thermal images and/or videos are rejected when the predefined region is not detected in the one or more frames;
• and
• wherein the identified region of interest is segmented using a combination of morphological operations comprising erosion and opening operation, followed by Otsu thresholding, edge detection and contour approximation techniques.