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Bayer Color Filter Array Demosaicing

Bayer Color Filter Array Demosaicing. EE362/Psyc221 Yu-Yao Chang. Outline. Introduction Algorithms Result Conclusion. EE362/Psyc221 Yu-Yao Chang. Introduction. Why demosaicing?. EE362/Psyc221 Yu-Yao Chang. Introduction. Bayer Color Filter Array. EE362/Psyc221 Yu-Yao Chang.

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Bayer Color Filter Array Demosaicing

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

  2. Outline • Introduction • Algorithms • Result • Conclusion 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

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