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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 9, Iss. 5 — Apr. 29, 2014

Super-resolution fusion of complementary panoramic images based on cross-selection kernel regression interpolation

Lidong Chen, Anup Basu, Maojun Zhang, Wei Wang, and Yu Liu  »View Author Affiliations


Applied Optics, Vol. 53, Issue 9, pp. 1918-1928 (2014)
http://dx.doi.org/10.1364/AO.53.001918


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Abstract

A complementary catadioptric imaging technique was proposed to solve the problem of low and nonuniform resolution in omnidirectional imaging. To enhance this research, our paper focuses on how to generate a high-resolution panoramic image from the captured omnidirectional image. To avoid the interference between the inner and outer images while fusing the two complementary views, a cross-selection kernel regression method is proposed. First, in view of the complementarity of sampling resolution in the tangential and radial directions between the inner and the outer images, respectively, the horizontal gradients in the expected panoramic image are estimated based on the scattered neighboring pixels mapped from the outer, while the vertical gradients are estimated using the inner image. Then, the size and shape of the regression kernel are adaptively steered based on the local gradients. Furthermore, the neighboring pixels in the next interpolation step of kernel regression are also selected based on the comparison between the horizontal and vertical gradients. In simulation and real-image experiments, the proposed method outperforms existing kernel regression methods and our previous wavelet-based fusion method in terms of both visual quality and objective evaluation.

© 2014 Optical Society of America

OCIS Codes
(100.6640) Image processing : Superresolution
(110.4190) Imaging systems : Multiple imaging
(350.2660) Other areas of optics : Fusion
(110.3010) Imaging systems : Image reconstruction techniques

ToC Category:
Image Processing

History
Original Manuscript: October 30, 2013
Revised Manuscript: January 29, 2014
Manuscript Accepted: February 1, 2014
Published: March 19, 2014

Virtual Issues
Vol. 9, Iss. 5 Virtual Journal for Biomedical Optics

Citation
Lidong Chen, Anup Basu, Maojun Zhang, Wei Wang, and Yu Liu, "Super-resolution fusion of complementary panoramic images based on cross-selection kernel regression interpolation," Appl. Opt. 53, 1918-1928 (2014)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-53-9-1918

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