1. Bayer Color Filter Array Demosaicing
EE362/Psyc221
Yu-Yao Chang

2. Outline Introduction Algorithms Result Conclusion
EE362/Psyc221 Yu-Yao Chang
EE362/Psyc221 Yu-Yao Chang

3. Introduction
Why demosaicing?
EE362/Psyc221 Yu-Yao Chang

4. Introduction
Bayer Color Filter Array
EE362/Psyc221 Yu-Yao Chang

5. Algorithm
Bilinear Interpolation
EE362/Psyc221 Yu-Yao Chang

6. Algorithm Bilinear Interpolation: Tend to fail at sharp edges
EE362/Psyc221 Yu-Yao Chang

7. Algorithm
Gradient Method
EE362/Psyc221 Yu-Yao Chang

8. Algorithm Two Line Interpolation Need only 1 line buffer Rx
EE362/Psyc221 Yu-Yao Chang

9. Algorithm Data-Dependent Triangulation Applied to rotated sample array
EE362/Psyc221 Yu-Yao Chang

10. Algorithm
Edge-Directed
EE362/Psyc221 Yu-Yao Chang

11. Algorithm High-Quality Linear Interpolation
Bilinear + Gradient Correction
R = Biliear(R) + αGradient(G)
EE362/Psyc221 Yu-Yao Chang

12. Result
Original
2 Line
Bilinear
DDT
EE362/Psyc221 Yu-Yao Chang

13. Result
Original ED
HQL
EE362/Psyc221 Yu-Yao Chang

14. Result
Original
2 Line
Bilinear
DDT
EE362/Psyc221 Yu-Yao Chang

15. Result
Original ED
HQL
EE362/Psyc221 Yu-Yao Chang

16. Result

17. Conclusion Tend to fail on edges
Demosaic using natural image properties
Quality Computational / Hardware Cost
EE362/Psyc221 Yu-Yao Chang