Fig. 1. Schematic of SDOCT system

Fig. 2. Robotic arm equipped with OCT probe. (a) Schematic diagram; (b) scanning range

Fig. 3. Sphere center obtained from point cloud data of precision steel ball surface scanned with OCT. (a) B-scan image during OCT scanning process of precision steel ball; (b) spherical point cloud diagram of steel ball after edge filtering; (c) complete spherical surface fitted using data from Fig.3(b)

Fig. 4. Comparison of simulated experimental results of biological tissues of silk fibers with diameter of ~32 μm. (a) Image stitching result based on robotic arm kinematic matrix; (b) registration result based on DCCTRR algorithm; (c) corresponding RGB image of Fig.4(a); (d) corresponding RGB image of Fig.4(b)

Fig. 5. Structural images of chicken breast. (a) Chicken breast; (b) B-scan image; (c) frontal image of single scanning area

Fig. 6. Stitching results of large-area OCT scan image of chicken breast. (a) Registration result of adjacent B-scan images in 3D space; (b) large-size frontal structural image obtained using DCCTRR method