A computer program product for determining, by a processor, a distance on a human body, the computer program product comprising a non-transitory computer-readable medium storing instructions thereon, the instructions being executable by the processor to:
- display at least one guide marker on a display, the display having a reflective surface;
- capture an image via a camera associated with the display, the image including two points on a body, wherein when the image is captured a reflection of the two points is aligned with the at least one guide marker;
- determine a three-dimensional position of each point based on a stereo pair, the stereo pair including the image and the reflection of the two points aligned with the at least one guide marker;
- and
- calculate the distance between the two points by comparing the three-dimensional positions of each point.