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Blur Detection via Phase Spectrum

  • Renyan ZhangEmail author
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11366)

Abstract

The effectiveness of blur features is very important in blur detection from a single image and the most existing blur features are sensitive to the strong edges in the blurred image region which degrades the detection methods. We analyze the information carried by the reconstruction of an image from the phase spectrum alone (RIPS) and the influences of blurring on RIPS. We find that a clear image region has more intensity changes than a blurred one because the former has more high frequency components. And the local maxima of RIPS are at where these image components occur, which make the RIPS of the clear image regions are obviously bigger than that of the blurred ones. Based on this finding, we proposed a simple blur feature, called Phase Map (PM), generated by thresholding RIPS adaptively. And our blur detection method propagates PM to the final blur map only by filtering PM using the relative total variation (RTV) filter. Our proposed method is evaluated on challenging blur image datasets. The evaluation demonstrates that PM feature is effective for different blur types and our detection method performs better than the state-of-the-art algorithms quantitatively and qualitatively.

Keywords

Blur detection Phase spectrum 

Supplementary material

484523_1_En_46_MOESM1_ESM.pdf (177 kb)
Supplementary material 1 (pdf 176 KB)

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.College of Electrical Engineering and AutomationShandong University of Science and TechnologyQingdaoChina

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