Fig. 1. Schematic of fringe projection system

Fig. 2. Pretreatment dichotomous method to select exposure time

Fig. 3. Flow chart of preprocessing dichotomous selection of exposure time

Fig. 4. Measuring system

Fig. 5. (a) High reflective color plate and three color channel light intensity map; (b) Three-color channel preprocessing of dichotomous selection of exposure time to take the fringe pattern; (c) The generated adaptive color stripe graph; (d) The absolute phase recovered under the corresponding color channel; (e) Restore the absolute phase of the highly reflective color plate; (f) 3D topography of recovered high reflective color plate

Fig. 6. (a) Color ceramic cup and three color channel light intensity diagram; (b) Three-color channel preprocessing of dichotomous selection of exposure time to take the fringe pattern; (c) The generated adaptive color stripe graph; (d) The absolute phase recovered under the corresponding color channel; (e) Restored color ceramic cup absolute phase; (f) 3D topography of the recovered color ceramic cup