The success of the state-of-the-art deblurring methods mainly depends on the restoration of sharp edges in a coarse-to-fine kernel estimation process. In this paper, we propose to learn a deep convolutional neural network for extracting sharp edges from blurred images. Motivated by the success of the existing filtering-based deblurring methods, the proposed model consists of two stages: suppressing extraneous details and enhancing sharp edges. We show that the two-stage model simplifies the learning process and effectively restores sharp edges. Facilitated by the learned sharp edges, the proposed deblurring algorithm does not require any coarse-to-fine strategy or edge selection, thereby significantly simplifying kernel estimation and reducing computation load. Extensive experimental results on challenging blurry images demonstrate that the proposed algorithm performs favorably against the state-of-the-art methods on both synthetic and real-world images in terms of visual quality and run-time.
Bibliographical noteFunding Information:
This work was supported in part by the NSF CAREER under Grant 1149783, in part by the NSF of China under Grant 61673234, Grant 61732007 and Grant U1636124, in part by the 973 Program of China under Grant 2014CB347600, in part by the NSF of Jiangsu Province under Grant BK20140058, in part by the National Key Research and Development Program of China under Grant 2016YFB1001001, and in part by gifts from Adobe and Nvidia. The work of X. Xu was supported by a scholarship from China Scholarship Council.
© 2017 IEEE.
All Science Journal Classification (ASJC) codes
- Computer Graphics and Computer-Aided Design