A system and method of extracting or inspecting a feature of an object using thermal imaging, and a method of inspecting an object of a garment product. The system includes a source of thermal influence arranged to heat or cool an object; an imager arranged to capture a plurality of images of the object when the object is subjected to the thermal influence; and an image processor arrange to processing the plurality of images and to distinguish a feature of interest from the other portions of the object presented on the plurality of images.