Fig. 1. Principle of traditional speckle displacement field solution method

Fig. 2. Self-supervised learning framework for speckle images

Fig. 3. Solution results of rigid motion displacement field

Fig. 4. Solution results of linear displacement field

Fig. 5. Spatial distributions of error in solving rigid motion displacement field

Fig. 6. Spatial distributions of error in solving linear displacement field

Fig. 7. Solution results of star displacement field

Fig. 8. Spatial distributions of error in solving star displacement field

Fig. 9. Comparison of star displacement field solution results in different spatial frequency regions. (a) Line distributions of displacement field for x=90; (b) error curves for x=90; (c) line distributions of displacement field for x=290; (d) error curves for x=290

Fig. 10. Solution results of rotation displacement field

Fig. 11. Spatial distributions of error in solving rotation displacement field

Fig. 12. Speckle images with different Gaussian spot parameters

Fig. 13. Results of illumination robustness test. (a) Case 1; (b) case 2; (c) case 3

Fig. 14. Comparison of computational efficiency