The Application of Fringe Projection Concept for Selective Data Acquisition

Selective data acquisition has been researched recently as an alternative for direct interface reverse engineering (RE) with rapid prototyping (RP). Rather than performing data reduction after capturing data of an entire object, data are acquired selectively and locally layer by layer according to the analysis from the image of the object. The result of each scan is contour data points, which can be directly used to generate commands for fabricating a prototype. The concept of fringe projection is presented in this paper as a tool for recommending scanning position in selective data acquisition. A single band of bright light is projected horizontally onto the object and the image of the projected band is captured and analyzed instead of the image of the object. The study shows promising results that encourage further investigation such that adaptive reverse engineering system for direct interface with rapid prototyping (RP) can be improved.