3-D reconstruction method based on structured light of colorful stripes for object

A new-type encoding was proposed for colorful stripes based on structured light to design the projection pattern. To obtain the code information of the stripes, a color identification process was carried out on the projected image of a certain object with a corresponding algorithm developed for the eight colors in encoding by combining channel threshold with HSI space. With the stripe code information, the 3-D position of the object could be calculated using the parameters of camera and projector. The ways to calibrate the camera/projector and calculate the 3-D information of the object were investigated. Moreover, the 3-D reconstruction method for the object surface was proposed on the basis of spline interpolation. The surface of a plaster model and a human hand were taken as examples to be measured and reconstructed using the proposed method. Experimental results showed that the proposed method has the advantages of high reconstruction accuracy and good real-time performances.