A Nuclear-norm Model for Multi-Frame Super-Resolution Reconstruction from Video Clips

Rui Zhao The Chinese University of Hong Kong Raymond H. Chan The Chinese University of Hong Kong

Optimization and Control mathscidoc:1704.27001

We propose a variational approach to obtain superresolution images from multiple low-resolution frames extracted from video clips. First the displacement between the lowresolution frames and the reference frame are computed by an optical flow algorithm. Then a low-rank model is used to construct the reference frame in high-resolution by incorporating the information of the low-resolution frames. The model has two terms: a 2-norm data fidelity term and a nuclear-norm regularization term. Alternating direction method of multipliers is used to solve the model. Comparison of our methods with other models on synthetic and real video clips show that our resulting images are more accurate with less artifacts. It also provides much finer and discernable details.
Multi-Frame Super-Resolution, Video Super- Resolution, High-Resolution, Nuclear Norm, Low Rank Modeling
[ Download ] [ 2017-04-25 17:40:49 uploaded by raydrs ] [ 754 downloads ] [ 0 comments ]
@inproceedings{ruia,
  title={A Nuclear-norm Model for Multi-Frame Super-Resolution Reconstruction from Video Clips},
  author={Rui Zhao, and Raymond H. Chan},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170425174049270221746},
}
Rui Zhao, and Raymond H. Chan. A Nuclear-norm Model for Multi-Frame Super-Resolution Reconstruction from Video Clips. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170425174049270221746.
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