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    Article

    Noisy practical facial super-resolution method via deformable constrained model with small dataset

    Face Super-Resolution (FSR) is to infer high resolution facial image(s) from given low resolution one(s). But when large-scale training samples are absent, FSR may fail in inferring high resolution image for p...

    Liang Chen, Qing Li, Junjun Jiang in Multimedia Tools and Applications (2020)

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    Article

    Action recognition from depth sequences using weighted fusion of 2D and 3D auto-correlation of gradients features

    This paper presents a new framework for human action recognition from depth sequences. An effective depth feature representation is developed based on the fusion of 2D and 3D auto-correlation of gradients feat...

    Chen Chen, Baochang Zhang, Zhenjie Hou, Junjun Jiang in Multimedia Tools and Applications (2017)

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    Article

    HRM graph constrained dictionary learning for face image super-resolution

    Sparse coding based face image Super-Resolution (SR) approaches have received increasing amount of interest recently. However, most of the existing sparse coding based approaches fail to consider the geometric...

    Kebin Huang, Ruimin Hu, Junjun Jiang, Zhen Han in Multimedia Tools and Applications (2017)

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    Article

    Heteroskedasticity tuned mixed-norm sparse regularization for face hallucination

    Face hallucination is typically an ill-posed inverse problem, so it is essential to exploit an effective norm-regularized underlying representation. Due to the under-sparsity or over-sparsity, the widely used ...

    Zhongyuan Wang, Ruimin Hu, Junjun Jiang, Zhen Han in Multimedia Tools and Applications (2016)

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    Article

    Efficient single image super-resolution via graph-constrained least squares regression

    We explore in this paper an efficient algorithmic solution to single image super-resolution (SR). We propose the gCLSR, namely graph-Constrained Least Squares Regression, to super-resolve a high-resolution (HR...

    Junjun Jiang, Ruimin Hu, Zhen Han, Tao Lu in Multimedia Tools and Applications (2014)