Fig. 1. Schematic of binocular fringe projection

Fig. 2. Flowchart for determining optimal projected intensity

Fig. 3. Deviation chart of phase mapping. (a) Phase mapping bias of the low-exposure method; (b) phase mapping bias of the proposed method

Fig. 4. Experimental device and scene image

Fig. 5. Steel plate images and binary images collected by left and right cameras. (a) Image collected by left camera; (b) binary image of the high reflective area of the left camera; (c) image collected by right camera; (d) binary image of the high reflective area of the right camera

Fig. 6. Stripe images of highly reflective areas of the steel plate obtained by different methods. (a) (e) Existing binocular method; (b) (f) method in Ref. [10]; (c) (g) method in Ref. [12]; (d) (h) proposed method

Fig. 7. Phase error comparison of the 500th row of the four methods. (a) Overall error; (b) local amplification error

Fig. 8. Point cloud results of the flange piece, the surface of the steel gear pump, and the ladder standard block measured by five different methods. (a) Existing binocular method; (b) method in Ref. [10]; (c) method in Ref. [12]; (d) method in Ref. [13]; (e) proposed method

Fig. 9. 3D shape reconstruction results of flange plate, steel gear pump surface, and stepped standard block obtained five different methods. (a) Existing binocular method; (b) method in Ref. [10]; (c) method in Ref. [12]; (d) method in Ref. [13]; (e) proposed method

Fig. 10. Height difference measured by the proposed method