National University of Singapore | Department of Mathematics | Centre for Wavelets, Approx. and Info. Proc.


Publications    Google Scholar

 Upcoming
  • Digital Gabor filters do generate MRA-based wavelet tight frames  [PDF]
    H. Ji, Z. Shen, and Y. Zhao, Applied and Computational Harmonic Analysis xx(x), xxx-xxx, xxx. 2018
2018
  • Investigating energy-based pool structure selection in the structure ensemble modeling with experimental distance constraints: The example from a multidomain protein Pub1  [Link]
    G. Zhu, W. Liu, C. Bao, D. Tong, H. Ji, Z. Shen, D. Yang L. Lu, Proteins: Structure, Function, and Bioinformatics, 86(5), 501-514, 2018
  • Coherence retrieval using trace regularization  [PDF]
    C. Bao, G. Barbastathis, H. Ji, Z. Shen, and Z. Zhang, SIAM Journal on Imaging Sciences, 11(1), 679–706, Mar. 2018
  • Digital Gabor filters with MRA structure  [PDF]
    H. Ji, Z. Shen, and Y. Zhao, SIAM Journal on Multiscale Modeling and Simulation, 16(1), 452–476. Mar. 2018
2017
  • Apparent coherence loss in phase space tomography  [PDF]
    C. Bao, G. Barbastathis, H. Ji, Z. Shen, and Z. Zhang, Journal of the Optical Society of America A, 34(11), 2025-2033, 2017
  • Estimating defocus blur through rank of local patches  [PDF]
    G. Xu, Y. Quan and H. Ji, 16th International Conference on Computer Vision (ICCV), Venice, 2017
  • Directional frames for image recovery: Multi-scale discrete Gabor frames  [PDF]
    H. Ji, Z. Shen and Y. Zhao, Journal of Fourier Analysis and Applications, 23(4), 729-757, Aug. 2017
2016
  • Image recovery via geometrically structured approximation  [PDF]
    H. Ji, Y. Luo and Z. Shen, Applied and Computational Harmonic Analysis, 41(1), 75-93, Jul. 2016
  • An augmented Lagrangian method for L1-regularized optimization problems with orthogonality constraints  [PDF]
    W. Chen, H. Ji and Y. You, SIAM Journal on Scientific Computing, 38(4), B570-B592, 2016
  • Dictionary learning for sparse coding: Algorithms and analysis  [PDF]
    C. Bao, H. Ji, Y. Quan and Z. Shen, IEEE Transactions on Pattern Analysis and Machine Intelligence, 38(7), 1356-1369, Jul. 2016
  • Equiangular kernel Dictionary learning with applications to dynamic texture analysis  [PDF]
    Y. Quan, C. Bao and H. Ji, Proc. of Computer Vision and Pattern Recognition (CVPR), 2016
  • Sparse coding for classification via discrimination ensemble  [PDF]
    Y. Quan, Y. Xu, Y. Sun, Y. Huang and H. Ji, Proc. of Computer Vision and Pattern Recognition (CVPR), 2016
  • Cerebellar functional parcellation using sparse dictionary learning clustering  [Link]
    C. Wang, J. Kipping, C. Bao, H. Ji and A. Qiu, Frontiers in Neuroscience, 10(188), May. 2016
  • Dual Gramian analysis: duality principle and unitary extension principle  [PDF]
    Z. Fan, H. Ji and Z. Shen, AMS Mathematics of Computation, 85, 239-270, 2016
2015
  • Dynamic texture recognition via orthogonal tensor dictionary learning  [PDF]
    Y. Quan, Y. Huang and H. Ji, Proc. of International Conference on Computer Vision (ICCV), 2015
  • Removing rain from a single image via discriminative sparse coding  [PDF],  [Code]
    Y. Luo, Y. Xu and H. Ji, Proc. of International Conference on Computer Vision (ICCV), 2015
  • Classifying dynamic textures via spatiotemporal fractal analysis  [PDF]
    Y. Xu, Y. Quan, Z. Zhang, H. Ling and H. Ji,  Pattern Recognition, 48(10), 3239-3248, Oct. 2015
  • Data-driven multi-scale non-local wavelet frame construction and image recovery  [PDF], [Code]
    Y. Quan, H. Ji and Z. Shen, Journal of Scientific Computing, 63(2), 307-329, May. 2015
  • Convergence analysis for iterative data-driven tight frame construction scheme  [PDF]
    C. Bao, H. Ji and Z. Shen,  Applied and Computational Harmonic Analysis, 38(3), 510-523, May. 2015
2014
  • A convergent incoherent dictionary learning algorithm for sparse coding  [PDF]
    C. Bao, Y. Quan and H. Ji, Proc. of European Conference on Computer Vision (ECCV),  2014
  • Data-driven tight frame construction and image denoising  [PDF], [Code]
    J. Cai, H. Ji, Z. Shen and G. Ye, Applied and Computational Harmonic Analysis, 37(1), 89-105, Jul. 2014
  • L0 norm based dictionary learning by proximal methods with global convergence  [PDF], [Code]
    C. Bao, H. Ji, Y. Quan and Z. Shen, Proc. of Computer Vision and Pattern Recognition (CVPR), 2014
  • Wavelet frame based algorithm for 3D reconstruction in electron microscopy  [PDF]
    M. Li, Z. Fan, H. Ji and Z. Shen, SIAM Journal on Scientific Computing, 36(1), B45-B69, Jan. 2014
2013
  • Fast sparsity-based orthogonal dictionary learning for image restoration  [PDF]
    C. Bao, J. Cai and H. Ji, Proc. of International Conference on Computer Vision (ICCV), 2013
  • Recovering over/under-exposed regions of a color photograph  [PDF]
    L. Hou, H. Ji and Z. Shen, SIAM Journal on Imaging Sciences, 6(4), 2213–2235, Nov. 2013
  • Band-limited wavelets and framelets in low dimensions  [PDF]
    L. Hou and H. Ji, Journal of Fourier Analysis and Applications, 19(4), 731-761, Aug. 2013
  • Wavelet domain multi-fractal analysis for static and dynamic texture classification  [PDF]
    H. Ji, X. Yang, H. Ling and Y. Xu, IEEE Transactions on Image Processing, 22(1), 286-299, Jan. 2013
2012
  • Scale-space texture description on SIFT-like textons  [PDF]
    Y. Xu, S. Huang, H. Ji and C. Fermuller, Computer Vision and Image Understanding, 116(9), 999-1013, Sep. 2012
  • A two-stage approach to blind spatially-varying motion deblurring  [PDF]
    H. Ji and K. Wang, Proc. of Computer Vision and Pattern Recognition (CVPR), 2012
  • Real time robust L1 tracker using accelerated proximal gradient approach  [PDF]
    C. Bao, Y. Wu, H. Ling and H. Ji, Proc. of Computer Vision and Pattern Recognition (CVPR), 2012
  • Contour based recognition  [PDF]
    Y. Xu, Y. Quan, Z. Zhang, H. Ji, M. Nishigaki, C. Fermuller and D. Dementhon, Proc. of Computer Vision and Pattern Recognition (CVPR),  2012
  • Robust image deconvolution with an inaccurate blur kernel  [PDF], [Code]
    H. Ji and K. Wang, IEEE Transactions on Image Processing, 21(4), 1624-1634, Apr. 2012
  • Image deconvolution using a characterization of sharp images in wavelet domain  [PDF]
    H. Ji, J. Li, Z. Shen, and K. Wang, Applied and Computational Harmonic Analysis, 32(2), 295-304, Mar. 2012
  • Wavelet frame based blind image inpainting  [PDF]
    B. Dong, H. Ji, J. Li, Z. Shen, Applied and Computational Harmonic Analysis, 32(2), 268-279, Mar. 2012
  • Framelet based blind image deblurring from a single image  [PDF], [Code]
    J. Cai, H. Ji, C. Liu and Z. Shen, Framelet based blind image deblurring from a single image, 1(2), 562-572, Feb. 2012
2011
  • Robust video restoration by joint sparse and low rank matrix approximation  [PDF], [Code]
    H. Ji, S. Huang, Z. Shen, and Y.-H. Xu, SIAM Journal on Imaging Sciences, 4(4), 1122-1142, Nov. 2011
  • Wavelet frame based image restoration with missing/damaged pixels  [PDF]
    H. Ji, Z. Shen and Y.-H. Xu, East Asia Journal on Applied Mathematics, 1(2), 108-131, 2011
  • Dynamic texture classification using dynamic fractal analysis  [PDF]
    Y. Xu, Y. Quan, H. Lin and H. Ji, Proc. of International Conference on Computer Vision (ICCV), 2011
2010
  • Inpainting for compressed images  [PDF]
    J. Cai, H. Ji, F. Shang and Z. Shen, Applied and Computational Harmonic Analysis, 29(3), 368-381, Nov. 2010
  • Learning shift-invariant sparse representation of actions  [PDF]
    Y. Li, C. Fermuller, Y. Aloimonos and H. Ji, Proc. of Computer Vision and Pattern Recognition (CVPR), 2010
  • A new texture descriptor using multifractal analysis in multi-orientation wavelet pyramid  [PDF]
    Y. Xu, X. Yang, H. Ling and H. Ji, Proc. of Computer Vision and Pattern Recognition (CVPR), 2010
  • Robust video denoising using low rank matrix completion  [PDF]
    H. Ji, C. Liu, Z. Shen and Y.-H. Xu, Proc. of Computer Vision and Pattern Recognition (CVPR), 2010
  • Wavelet frame based scene reconstruction from range data  [PDF]
    H. Ji, Z. Shen and Y.-H. Xu, Journal of Computational Physics, 229 (6), 2093-2018, Mar. 2010
  • Illusory motion due to causal time filtering  [PDF]
    C. Fermuller, H. Ji and A. Kitaoka, Vision Research, 50 (3), 315-329, Feb. 2010
2009
  • Blind motion deblurring using multiple images  [PDF]
    J. Cai, H. Ji, C. Liu and Z. Shen, Journal of Computational Physics, 228 (14), 5057-5071, Aug. 2009
  • Combining powerful local and global statistics for texture description  [PDF]
    Y. Xu, S. Huang, H. Ji and C. Fermuller, Proc. of Computer Vision and Pattern Recognition, (CVPR), 2009
  • Blind motion deblurring from a single image using sparse approximation  [PDF], [Code]
    J. Cai, H. Ji, C. Liu and Z. Shen, Proc. of Computer Vision and Pattern Recognition (CVPR), 2009
  • High-quality curvelet-based motion deblurring using an image pair  [PDF]
    J. Cai, H. Ji, C. Liu and Z. Shen, Proc. of Computer Vision and Pattern Recognition (CVPR), 2009
  • Viewpoint invariant texture description using fractal analysis  [PDF]
    Y. Xu, H. Ji and C. Fermuller, International Journal of Computer Vision, 83 (1), 85-100, Jun. 2009
  • Compactly supported orthonormal complex wavelets with dilation four and symmetry  [PDF]
    B. Han and H. Ji, Applied and Computational Harmonic Analysis, 26, 422-431, May 2009
  • Robust wavelet-based super-resolution reconstruction: Theory and Algorithm  [PDF]
    H. Ji and C. Fermuller, IEEE Transactions on Pattern Analysis and Machine Intelligence, 31(4), 649-660, Apr. 2009
2007-2008
  • Motion blur identification from image gradients  [PDF]
    H. Ji and C. Liu, Proc. of Computer Vision and Pattern Recognition (CVPR), 2008
  • Better flow estimation from color images  [PDF]
    H. Ji and C. Fermuller, EURASIP Journal on Applied Signal Processing, 1, Jan. 2007
2006
  • Noise cause slant underestimation in motion and stereo  [PDF]
    H. Ji, C. Fermuller, Vision Research, 46 (19), 3105-3120, Aug. 2006
  • A 3D shape constraint on video  [PDF]
    H. Ji, C. Fermuller, IEEE Transactions on Pattern Analysis and Machine Intelligence, 28(6), 1018-1023, Jun. 2006
  • Super-resolution reconstruction from extended video sequences,  [PDF]
    H. Ji, C. Fermuller, Proc. of European Conference on Computer Vision (ECCV), 2006
  • A projective invariant for textures  [PDF]
    Y. Xu, H. Ji and C. Fermuller, IEEE Conference on Computer Vision and Pattern Recognition, (CVPR), New York, 2006
2004-2005
  • Integration of motion fields through shape  [PDF]
    H. Ji and C. Fermuller, IEEE Conference on Computer Vision and Pattern Recognition (CVPR),San Diego, 2005
  • Bias in shape estimation  [Link]
    H. Ji and C. Fermuller, European Conference on Computer Vision (ECCV), Czech, 2004