Search Results for author: Haijian Zhang

Found 10 papers, 5 papers with code

Video Frame Interpolation with Stereo Event and Intensity Camera

no code implementations17 Jul 2023 Chao Ding, Mingyuan Lin, Haijian Zhang, Jianzhuang Liu, Lei Yu

The stereo event-intensity camera setup is widely applied to leverage the advantages of both event cameras with low latency and intensity cameras that capture accurate brightness and texture information.

Disparity Estimation Optical Flow Estimation +1

"Seeing'' Electric Network Frequency from Events

1 code implementation4 May 2023 Lexuan Xu, Guang Hua, Haijian Zhang, Lei Yu, Ning Qiao

Most of the artificial lights fluctuate in response to the grid's alternating current and exhibit subtle variations in terms of both intensity and spectrum, providing the potential to estimate the Electric Network Frequency (ENF) from conventional frame-based videos.

Learning to Super-Resolve Blurry Images with Events

1 code implementation27 Feb 2023 Lei Yu, Bishan Wang, Xiang Zhang, Haijian Zhang, Wen Yang, Jianzhuang Liu, Gui-Song Xia

Super-Resolution from a single motion Blurred image (SRB) is a severely ill-posed problem due to the joint degradation of motion blurs and low spatial resolution.

Sparse Learning Super-Resolution

"Seeing" Electric Network Frequency From Events

1 code implementation CVPR 2023 Lexuan Xu, Guang Hua, Haijian Zhang, Lei Yu, Ning Qiao

Most of the artificial lights fluctuate in response to the grid's alternating current and exhibit subtle variations in terms of both intensity and spectrum, providing the potential to estimate the Electric Network Frequency (ENF) from conventional frame-based videos.

Towards End-to-End Synthetic Speech Detection

1 code implementation11 Jun 2021 Guang Hua, Andrew Beng Jin Teoh, Haijian Zhang

The constant Q transform (CQT) has been shown to be one of the most effective speech signal pre-transforms to facilitate synthetic speech detection, followed by either hand-crafted (subband) constant Q cepstral coefficient (CQCC) feature extraction and a back-end binary classifier, or a deep neural network (DNN) directly for further feature extraction and classification.

Synthetic Speech Detection

Enhanced Time-Frequency Representation and Mode Decomposition

no code implementations30 Aug 2020 Haijian Zhang, Guang Hua

However, it is difficult for most previous methods to handle signal modes with closely-spaced or spectrally-overlapped instantaneous frequencies (IFs) especially in adverse environments.

Kernel Learning for High-Resolution Time-Frequency Distribution

1 code implementation1 Jul 2020 Lei Jiang, Haijian Zhang, Lei Yu, Guang Hua

To break the current limitation, we propose a data-driven kernel learning model directly based on Wigner-Ville distribution (WVD).

Vocal Bursts Intensity Prediction

Robust Time-Frequency Reconstruction by Learning Structured Sparsity

no code implementations30 Apr 2020 Lei Jiang, Haijian Zhang, Lei Yu

Time-frequency distributions (TFDs) play a vital role in providing descriptive analysis of non-stationary signals involved in realistic scenarios.

Descriptive

Learning Cluster Structured Sparsity by Reweighting

no code implementations11 Oct 2019 Yulun Jiang, Lei Yu, Haijian Zhang, Zhou Liu

Recently, the paradigm of unfolding iterative algorithms into finite-length feed-forward neural networks has achieved a great success in the area of sparse recovery.

Sparse Learning

Facial Feature Embedded CycleGAN for VIS-NIR Translation

no code implementations20 Apr 2019 Huijiao Wang, Li Wang, Xulei Yang, Lei Yu, Haijian Zhang

VIS-NIR face recognition remains a challenging task due to the distinction between spectral components of two modalities and insufficient paired training data.

Face Recognition Translation

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