Fig. 1. Hole pose measurement based on binocular vision

Fig. 2. Template method contour purification based on morphology

Fig. 3. Points to be matched determined by Gaussian fitting method. (a) Edge contour of the circular hole; (b) enlarged part of the left area; (c) Gaussian fitting result of the best matching point

Fig. 4. Hole contour extracted by our method. (a) Original image; (b) edge detection; (c) ellipse fitted to the initial hole edge; (d) ellipse fitted to of the optimized hole edge

Fig. 5. Three-dimensional reconstruction result of the hole profile. (a) Left image; (b) right image; (c) reconstruction result

Fig. 6. Experimental results of deviation compensation. (a) Image of the measurement hole; (b) radius of the hole; (c) distance between the holes