Phase-map fringe pixel tracing for height computation

Fringe projection coupled with phase map generation has been used extensively for various applications namely in quality control sector of the industrial field. A phase map is generated from a multiple fringe projected images. Many algorithms have been generated for this purpose. Here a simple three step phase-shifting is used to project the fringes and finally from these images a saw tooth fringe of a phase map is produced. Deformed area of the phase map is re-traced to its matching pixel which has been translated to a designated point due to height differences. This re-traced distance value relates to the height difference occurring of the deformed area. The experimental work done by V.Retnasamy & M.M Ratnam (2008) is further investigated for the total area rather than respective points in a computer simulated images. Multiple and various shapes of computer simulated images have been investigated for height computation.