  In this paper, we develop a procedure for the detection of the contours of
thermal bridges from thermographic images, in order to study the energetic
performance of buildings. Two main steps of the above method are: the
enhancement of the thermographic images by an optimized version of the
mathematical algorithm for digital image processing based on the theory of
sampling Kantorovich operators, and the application of a suitable thresholding
based on the analysis of the histogram of the enhanced thermographic images.
Finally, an accuracy improvement of the parameter that defines the thermal
bridge is obtained.
