Fig. 1. Basic principle diagram of binocular vision measurement

Fig. 2. Downsampling process of images with different focal lengths

Fig. 3. Downsampling process of image

Fig. 4. Images with different downsampling factors. (a) Original image; (b) ξ=16/8; (c) ξ=16/7; (d) ξ=16/6; (e) ξ=16/5; (f) ξ=16/4

Fig. 5. Comparison of maximum focal length images and super-resolution images. (a) Interpolated image with maximum focal length; (b) super-resolution image; (c) partially enlarged image of interpolated image with maximum focal length; (d) partially enlarged image of super-resolution image

Fig. 6. Resolution board images at different focal lengths and enlarged view of dotted frame. (a) 8.142 mm; (b) 9.024 mm; (c) 9.797 mm; (d) 10.201 mm; (e) super-resolution image; (f) enlarged image of fig. (b); (g) enlarged image of fig. (c); (h) enlarged image of fig. (d); (i) enlarged image of fig. (e)

Fig. 7. Experiment of indoor scene targets ranging. (a) Left maximum focal length image; (b) right maximum focal length image; (c) left super-resolution image; (d) right super-resolution image

Fig. 8. Experiment of outdoor scene targets ranging. (a) Left maximum focal length image; (b) right maximum focal length image; (c) left super-resolution image; (d) right super-resolution image

Table 1. Quantitative evaluation of simulation results

Table 2. Ranging results of binocular zoom ranging system

Table 3. Ranging results of targets in outdoor scene