An apparatus arranged to analyze a structure, the apparatus comprising: a control unit a light source arranged to irradiate a target area of the structure and a light detector in communication with said control unit, and arranged to detect said irradiated light from said light source after interaction with the target area, said control unit arranged to: transform amplitudes of the detected light to the optical thickness domain, said transform comprising a bilinear transform determine morphological information of the target area responsive to said performed transform. The determined morphological information is optionally displayed within a three dimensional view of the target area.
