Fig. 1. Schematic of new coding stereoscopic target. (a) New coding stereoscopic target; (b) the first coding target plane (number range is 0-11); (c) the second coding target plane (number range is 26-37); (d) the third coding target plane (number range is 40-51); (e) the fourth coding target plane (number range is 13-24)

Fig. 2. Schematic of coding unit structure. (a) Coding unit construction diagram; (b) encoding symbol construction diagram; (c) numbering diagram of each coding unit in the first coding target plane

Fig. 3. Decoding schematic of new coding stereoscopic target

Fig. 4. Calibration model of binocular camera

Fig. 5. Experimental scene

Fig. 6.

Comparison diagrams of average absolute errors between proposed method and Zhang s method. (a) Mean absolute reprojection error (MARE); (b) mean absolute standard-length error (MASE); (c) mean absolute coplanar error (MACE)

Fig. 7. Comparison diagrams of average absolute errors between only collecting partial coding stereoscopic target image and collecting complete coding stereoscopic target image. (a) Mean absolute reprojection error; (b) mean absolute standard-length error; (c) mean absolute coplanar error

Fig. 8.

Comparison diagram of standard measuring block measurement error by proposed method and Zhang s calibration method

Table 1. Experimental calibration results of proposed method and Zhang s method