Citation

Li H, Qiu T, Luan S, Song H, Wu L. PLoS One 2018; 13(3): e0191367.

Affiliation

College of Information & Communication Engineering, Dalian Minzu University, Dalian, Liaoning, China.

Copyright

(Copyright © 2018, Public Library of Science)

DOI

10.1371/journal.pone.0191367

PMID

29513677

Abstract

Motion blur appearing in traffic sign images may lead to poor recognition results, and therefore it is of great significance to study how to deblur the images. In this paper, a novel method for deblurring traffic sign is proposed based on exemplars and several related approaches are also made. First, an exemplar dataset construction method is proposed based on multiple-size partition strategy to lower calculation cost of exemplar matching. Second, a matching criterion based on gradient information and entropy correlation coefficient is also proposed to enhance the matching accuracy. Third, L0.5-norm is introduced as the regularization item to maintain the sparsity of blur kernel. Experiments verify the superiority of the proposed approaches and extensive evaluations against state-of-the-art methods demonstrate the effectiveness of the proposed algorithm.

Language: en