Fig. 1. Establish projector-camera matching relationship. (a) Coordinate system transformation relationship; (b) identification point bitmap

Fig. 2. Simulated sinusoidal fringe image and its cross-section. (a) Standard sinusoidal fringe pattern; (b) saturated sinusoidal fringe pattern

Fig. 3. Intensity profile of highly reflective region and unwrapped phase of the region. (a), (d) Highly reflective surface; (b), (e) projected complementary hue; (c), (f) changed saturation of projected color

Fig. 4. Flow chart of experimental method

Fig. 5. Measure yellow ceramic cup surface. (a) Photo of yellow ceramic cup; (b) measured 3D shape

Fig. 6. Analysis of measurement efficiency. (a) Selected area; (b) phase recovery of traditional fringe and coded fringe in selected region at different exposure time; (c) four regions; (d) integrity of unwrapped phase using traditional fringe at different exposure time in each region; (e) integrity of unwrapped phase using coded fringe at different exposure time in each region

Fig. 7. Comparison of measured curve and fitted curve of cup surface. (a) Multiple exposures; (b) proposed method

Table 1. Analysis of accuracy verification results