1. ECE 299 Holography and Coherent Imaging
Lecture 12. Computer Generated Holograms II
David J. Brady
Duke University
Lecture 11. Computer Generated Holograms II

2. Review Lecture 10. Computer Generated Holograms

3. Problems Lecture 10. Computer Generated Holograms

4. Example: Binary Amplitude CGH
Lecture 10. Computer Generated Holograms

5. Encoding Phase Lecture 10. Computer Generated Holograms

6. Phase and u Lecture 10. Computer Generated Holograms

7. Off axis CGH Lecture 10. Computer Generated Holograms

8. Alternative Coding View
Lecture 10. Computer Generated Holograms

9. What should a be? Lecture 10. Computer Generated Holograms

10. angles Lecture 10. Computer Generated Holograms

11. What is D for 300 dots/inch? Lecture 10. Computer Generated Holograms

12. Example Lecture 10. Computer Generated Holograms

13. Abs(fft) Lecture 10. Computer Generated Holograms

14. Angle(fft) Lecture 10. Computer Generated Holograms

15. 1+F cos(2 pi u+phi) Lecture 10. Computer Generated Holograms

16. Fft(t) Lecture 10. Computer Generated Holograms

17. Dc supressed Lecture 10. Computer Generated Holograms

18. Binary Hologram t=round(t/max(max(t)));
Lecture 10. Computer Generated Holograms

19. Reconstruction Lecture 10. Computer Generated Holograms

20. Hologram is mostly DC only intersting in middle
Lecture 10. Computer Generated Holograms

21. Multiply image by random phase
Lecture 10. Computer Generated Holograms

22. Phase of FFT Lecture 10. Computer Generated Holograms

23. Continuous Hologram Lecture 10. Computer Generated Holograms

24. FFT of Hologram Lecture 10. Computer Generated Holograms

25. DC suppresed Lecture 10. Computer Generated Holograms

26. Binary Hologram Lecture 10. Computer Generated Holograms

27. Reconstruction Lecture 10. Computer Generated Holograms

28. Alternative Coding Strategy
Lecture 10. Computer Generated Holograms

29. hologram=(sign(angle(fftshift(fft2(targetImage))))+1)/2;
Lecture 10. Computer Generated Holograms

30. Lecture 10. Computer Generated Holograms

31. Lecture 10. Computer Generated Holograms

32. Lecture 10. Computer Generated Holograms