Regular Articles

Color demosaicking via robust adaptive sparse representation

[+] Author Affiliations
Lili Huang

Guangxi University of Science and Technology, School of Science, No. 268, Donghuan Road, Liuzhou 545006, China

Nanjing University of Science and Technology, School of Computer Science, No. 200, Xiaolingwei Road, Nanjing 210094, China

Liang Xiao

Nanjing University of Science and Technology, School of Computer Science, No. 200, Xiaolingwei Road, Nanjing 210094, China

Jiangsu Province Key Laboratory of Spectral Imaging and Intelligent Sensing, No. 200, Xiaolingwei Road, Nanjing 210094, China

Qinghua Chen

Guangxi University of Science and Technology, School of Science, No. 268, Donghuan Road, Liuzhou 545006, China

Kai Wang

Nanjing University of Science and Technology, School of Computer Science, No. 200, Xiaolingwei Road, Nanjing 210094, China

J. Electron. Imaging. 24(5), 053012 (Sep 21, 2015). doi:10.1117/1.JEI.24.5.053012
History: Received December 7, 2014; Accepted August 20, 2015
Text Size: A A A

Abstract.  A single sensor camera can capture scenes by means of a color filter array. Each pixel samples only one of the three primary colors. We use a color demosaicking (CDM) technique to produce full color images and propose a robust adaptive sparse representation model for high quality CDM. The data fidelity term is characterized by l1 norm to suppress the heavy-tailed visual artifacts with an adaptively learned dictionary, while the regularization term is encouraged to seek sparsity by forcing sparse coding close to its nonlocal means to reduce coding errors. Based on the classical quadratic penalty function technique in optimization and an operator splitting method in convex analysis, we further present an effective iterative algorithm to solve the variational problem. The efficiency of the proposed method is demonstrated by experimental results with simulated and real camera data.

Figures in this Article
© 2015 SPIE and IS&T

Citation

Lili Huang ; Liang Xiao ; Qinghua Chen and Kai Wang
"Color demosaicking via robust adaptive sparse representation", J. Electron. Imaging. 24(5), 053012 (Sep 21, 2015). ; http://dx.doi.org/10.1117/1.JEI.24.5.053012


Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.