Fig. 1. Schematic diagram of measurement system

Fig. 2. 1 bit binary pattern

Fig. 3. Image model of dual line-scan cameras

Fig. 4. Calibration of line-scan camera. (a) A stereo target with hollow stripes; (b) camera calibration diagram

Fig. 5. Comparative experiment of matching algorithm. (a) On site experimental platform; (b) pictures captured by line-scan camera

Fig. 6. Point cloud calculation results of three matching algorithms. (a) Point cloud based on grayscale algorithm; (b) point cloud based on Fourier algorithm; (c) point cloud obtained by Fourier-based gray matching algorithm

Fig. 7. Measurement experiment of zirconia standard plate. (a) Physical picture of zirconia plate; (b) image captured by line-scan camera; (c) color difference map of point cloud