Bayer Color Filter Array Demosaicing

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Presentation transcript:

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

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

Introduction Why demosaicing? EE362/Psyc221 Yu-Yao Chang

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

Algorithm Bilinear Interpolation EE362/Psyc221 Yu-Yao Chang

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

Algorithm Gradient Method EE362/Psyc221 Yu-Yao Chang

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

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

Algorithm Edge-Directed EE362/Psyc221 Yu-Yao Chang

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

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

Result Original ED HQL EE362/Psyc221 Yu-Yao Chang

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

Result Original ED HQL EE362/Psyc221 Yu-Yao Chang

Result

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

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