Fig. 1. Schematic of fringe projection 3D shape measurement system based on parallel four color channels

Fig. 2. Photograph of fringe projection 3D shape measurement system based on parallel four colour channels

Fig. 3. Profile of one line in absolute phase map achieved by using two channels before and after matching

Fig. 4. Projected fringe patterns. (a) Composite color fringe pattern; (b) infrared fringe pattern

Fig. 5. Deformed fringe patterns obtained by camera. (a) Deformed composite color fringe pattern; (b) deformed infrared fringe pattern

Fig. 6. Phase map of mask. (a) Wrapped phase in red and blue channel; (b) wrapped phase in green channel; (c) wrapped phase in infrared channel; (d) absolute phase map

Fig. 7. 3D shape data of mask

Fig. 8. 3D shape data of artificial step

Fig. 9. 3D shape data of a human hand

Fig. 10. Intensity at a row of color fringe after coupling compensation