Fig. 1. Flow chart of OTF computation based on macroscopic Fourier ptychography

Fig. 2. Schematic diagram for OTF measurement based on macroscopic Fourier ptychography

Fig. 3. Experimental setup for OTF measurement based on macroscopic Fourier ptychography

Fig. 4. Images captured in experiment and reconstruction results. (a) 9×9 images captured in experiment; (b) reconstructed high-resolution image

Fig. 5. Measurement results. (a) Amplitude of CTF; (b) phase of CTF; (c) MTF; (d) PTF

Fig. 6. Fringe Zernike polynomial coefficients

Fig. 7. Experimental data and measurement results. (a) Obstructed lens; (b) 3×3 images captured in experiment; (c) reconstructed high-resolution image; (d) reconstructed amplitude of pupil function; (e) reconstructed phase of pupil function; (f) MTF

Fig. 8. MTF measurement results under different overlap rates. (a) 74.4%; (b) 65.5%; (c) 56.7%

Fig. 9. Comparison among MTF results obtained by proposed method, theoretical values and instrument measurements