Neo-compensate-myopia-automatic-compensate-system

1. Neo-compensate-myopia-automatic-compensate-system R01942056 Cobra D01943032 JJLin

2. Problem

3. Problem Myopia Original image Blurred image

4. Goal Original image Pre-compute Myopia Compensated image Clear image

5. Model

6. Myopia http://spie.org/Images/Graphics/Publications/FG04_P23_myopia_hyperopia.jpg

7. Deriving Myopia Filter d kd

8. Deriving Myopia Filter Circular uniform filter

9. Simplified Myopia Filter Box filter 2-pass

10. Inverse (De-convolution) • Inverse box filter are usually non-invertible

11. Inverse (De-convolution) • Use an energy function De-convolution Output ~ Original

12. Result

13. Optical Myopia Simulation • Canon 500D • Out-of-focus • 1/40, 5.6f, ISO 800 • 14.4”LCD

14. Result - Lena Out-of-focus (Same focal length) In-focus Gold (original) Original Ours

15. Result – Lena Out-of-focus (Same focal length) In-focus Gold (original) Original Ours

16. Result – SuzumiyaHaruhi Out-of-focus (Same focal length) In-focus Gold (original) Original Ours

17. Result - SuzumiyaHaruhi Out-of-focus (Same focal length) In-focus Gold (original) Original Ours

18. Discussion

19. Limit • Overflow is a serious problem (0-255) Myopia Compensated image Clear image

20. Limit • Overflow is a serious problem (0-255) Compensated image Clear image Myopia + + Box noise One pixel overflows

21. Q&A