Fig. 1. Schematic of total focusing

Fig. 2. Schematic of total focusing for forming elliptic trajectories

Fig. 3. Directionality diagram of shear waves

Fig. 4. Schematics of UNROLL. (a) Before optimization; (b) after optimization

Fig. 5. Schematics of PIPELINE. (a) Before optimization; (b) after optimization

Fig. 6. Schematics of dual-core optimization of PS. (a) Shared peripheral communication diagram; (b) schematic before and after using dual-core design

Fig. 7. Diagram of experimental setup

Fig. 8. Scan diagrams of generation laser and detection laser

Fig. 9. Algorithm flow chart based on ZYNQ

Fig. 10. Results obtained using laser ultrasonic TFM. (a) TFM image without generation direction coefficients; (b) TFM image with generation direction coefficients; (c) side view of TFM image without generation direction coefficients; (d) side view of TFM image with generation direction coefficients

Fig. 11. Results obtained using laser ultrasonic SAFT. (a) SAFT image without generation direction coefficients; (b) SAFT image with generation direction coefficients; (c) side view of SAFT image without generation direction coefficients; (d) side view of SAFT image with generation direction coefficients

Fig. 12. TFM images based on ZYNQ. (a) Front view; (b) side view

Table 1. Usage of on-board resources

Table 2. Comparison of running time and cost between ZYNQ-based TFM and PC-based TFM