3D Imaging with orthogonal color fringe projection and direct hue identification

Abstract

Structured light techniques are widely researched in 3D imaging for rapidly retrieving surface topography with high resolution. Various methods utilize color patterns to encode additional data onto a single projection, allowing accurate measurements through mathematical algorithms. This paper presents a novel technique that achieves complete reconstructions using an orthogonal setup, a rotary stage, the projection of color fringes, and a distinctive analysis method. Each color fringe encodes height data, enabling real-world reconstructions through direct color identification without relying on conventional techniques. Color calibration is implemented to enhance hue identification, and a new stitching method is proposed to merge results obtained from surface rotation into a single map. The final results demonstrate an accuracy of 0.1291mm.