System and method for obtaining thermal image data of a body part and thermal imager

A thermal imager including a thermal camera and a processor,

• the processor being configured to execute computer program code for executing a classifier, including:
• computer program code configured to receive image data of a body part, the image data including thermal image data from the thermal camera, the thermal image data including thermal image data of the body part and background thermal image data;
• computer program code configured to apply a classifier to the image data to detect a profile of the body part, the classifier being configured to use image data other than the thermal image data to perform the detection;
• computer program code configured to generate a mask from said profile;
• computer program code to apply the mask to the thermal image data to remove the background thermal image data and obtain thermal image data of the body part.