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Multi-frame demosaicing and super-resolution from under-sampled color images

Publication ,  Journal Article
Farsiu, S; Elad, M; Milanfar, P
Published in: Proceedings of SPIE - The International Society for Optical Engineering
December 1, 2004

In the last two decades, two related categories of problems have been studied independently in the image restoration literature: super-resolution and demosaicing. A closer look at these problems reveals the relation between them, and as conventional color digital cameras suffer from both low-spatial resolution and color filtering, it is reasonable to address them in a unified context. In this paper, we propose a fast and robust hybrid method of super-resolution and demosaicing, based on a maximum a posteriori (MAP) estimation technique by minimizing a multi-term cost function. The L1 norm is used for measuring the difference between the projected estimate of the high-resolution image and each low-resolution image, removing outliers in the data and errors due to possibly inaccurate motion estimation. Bilateral regularization is used for regularizing the luminance component, resulting in sharp edges and forcing interpolation along the edges and not across them. Simultaneously, Tikhonov regularization is used to smooth the chrominance component. Finally, an additional regularization term is used to force similar edge orientation in different color channels. We show that the minimization of the total cost function is relatively easy and fast. Experimental results on synthetic and real data sets confirm the effectiveness of our method.

Duke Scholars

Published In

Proceedings of SPIE - The International Society for Optical Engineering

DOI

ISSN

0277-786X

Publication Date

December 1, 2004

Volume

5299

Start / End Page

222 / 233

Related Subject Headings

  • 5102 Atomic, molecular and optical physics
  • 4009 Electronics, sensors and digital hardware
  • 4006 Communications engineering
 

Citation

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Farsiu, S., Elad, M., & Milanfar, P. (2004). Multi-frame demosaicing and super-resolution from under-sampled color images. Proceedings of SPIE - The International Society for Optical Engineering, 5299, 222–233. https://doi.org/10.1117/12.538372
Farsiu, S., M. Elad, and P. Milanfar. “Multi-frame demosaicing and super-resolution from under-sampled color images.” Proceedings of SPIE - The International Society for Optical Engineering 5299 (December 1, 2004): 222–33. https://doi.org/10.1117/12.538372.
Farsiu S, Elad M, Milanfar P. Multi-frame demosaicing and super-resolution from under-sampled color images. Proceedings of SPIE - The International Society for Optical Engineering. 2004 Dec 1;5299:222–33.
Farsiu, S., et al. “Multi-frame demosaicing and super-resolution from under-sampled color images.” Proceedings of SPIE - The International Society for Optical Engineering, vol. 5299, Dec. 2004, pp. 222–33. Scopus, doi:10.1117/12.538372.
Farsiu S, Elad M, Milanfar P. Multi-frame demosaicing and super-resolution from under-sampled color images. Proceedings of SPIE - The International Society for Optical Engineering. 2004 Dec 1;5299:222–233.

Published In

Proceedings of SPIE - The International Society for Optical Engineering

DOI

ISSN

0277-786X

Publication Date

December 1, 2004

Volume

5299

Start / End Page

222 / 233

Related Subject Headings

  • 5102 Atomic, molecular and optical physics
  • 4009 Electronics, sensors and digital hardware
  • 4006 Communications engineering