Robust technique for 3D shape reconstruction

In this paper a robust and simple scheme is presented for three dimensional (3D) shape reconstruction of real object. A novel composite pattern technique is proposed for projecting the light pattern on the object of interest. The proposed scheme reduces the number of patterns by combining the primary color coded channels into one composite format. Our approach uses both spatial and temporal intensity variation for calibration and construction phase. Gamma calibration is considered with the propose scheme. High quality depth map is obtained from the linear light reflected by the shape of object without complex calculations. Experimental results demonstrated that proposed technique is fast and exhibit high level of precision. In addition hardware cost is minimized as compare to current calibration procedures used in structured light scanning system. Our scheme requires a digital camera, flashlight and mask of pattern only.