Fig. 1. Schematic of PIV system

Fig. 2. Basic flow of G-hybrid method

Fig. 3. Reconstructed velocity fields in Rankine vortex simulation experiment. (a) True velocity field; (b) reconstructed result by Hybrid method 2020;(c) reconstructed result by G-hybrid method;(d) local amplification of velocity field

Fig. 4. Schematic of angular error of synthesized velocity vector

Fig. 5. Angular error distributions in Rankine vortex reconstruction. (a) Hybrid method 2020; (b) G-hybrid method

Fig. 6. Influence of displacement on accuracy. (a) RMSE; (b) AAE

Fig. 7. Influence of particle size on reconstruction error. (a) RMSE; (b) AAE

Fig. 8. Experimental platform for PIV measurement

Fig. 9. Particle images collected at different moments in rotation experiment. (a) t₁；(b) t₂

Fig. 10. Estimated velocity fields in rotation experiment. (a) Hybrid method 2020; (b) G-hybrid method

Fig. 11. Particle images collected at different moments in water injection experiment.(a) t₁；(b) t₂

Fig. 12. Estimated velocity fields in water injection experiment. (a) Hybrid method 2020; (b) G-hybrid method