User profiles for Zenghao Chai

Zenghao Chai

National University of Singapore
Verified email at u.nus.edu
Cited by 479

Learning imbalanced data with vision transformers

Z Xu, R Liu, S Yang, Z Chai… - Proceedings of the IEEE …, 2023 - openaccess.thecvf.com
The real-world data tends to be heavily imbalanced and severely skew the data-driven deep
neural networks, which makes Long-Tailed Recognition (LTR) a massive challenging task. …

Hiface: High-fidelity 3d face reconstruction by learning static and dynamic details

Z Chai, T Zhang, T He, X Tan… - Proceedings of the …, 2023 - openaccess.thecvf.com
3D Morphable Models (3DMMs) demonstrate great potential for reconstructing faithful and
animatable 3D facial surfaces from a single image. The facial surface is influenced by the …

Towards calibrated model for long-tailed visual recognition from prior perspective

Z Xu, Z Chai, C Yuan - Advances in Neural Information …, 2021 - proceedings.neurips.cc
Real-world data universally confronts a severe class-imbalance problem and exhibits a long-tailed
distribution, ie, most labels are associated with limited instances. The naïve models …

Star: Skeleton-aware text-based 4d avatar generation with in-network motion retargeting

Z Chai, C Tang, Y Wong, M Kankanhalli - arXiv preprint arXiv:2406.04629, 2024 - arxiv.org
The creation of 4D avatars (ie, animated 3D avatars) from text description typically uses text-to-image
(T2I) diffusion models to synthesize 3D avatars in the canonical space and …

Realy: Rethinking the evaluation of 3d face reconstruction

Z Chai, H Zhang, J Ren, D Kang, Z Xu, X Zhe… - European conference on …, 2022 - Springer
The evaluation of 3D face reconstruction results typically relies on a rigid shape alignment
between the estimated 3D model and the ground-truth scan. We observe that aligning two …

CMS-LSTM: Context embedding and multi-scale spatiotemporal expression LSTM for predictive learning

Z Chai, Z Xu, Y Bail, Z Lin… - 2022 IEEE International …, 2022 - ieeexplore.ieee.org
Spatiotemporal predictive learning (ST-PL) is a hotspot with numerous applications, such as
object movement and mete-orological prediction. It aims at predicting the subsequent …

HyP2 Loss: Beyond Hypersphere Metric Space for Multi-label Image Retrieval

C Xu, Z Chai, Z Xu, C Yuan, Y Fan, J Wang - Proceedings of the 30th …, 2022 - dl.acm.org
Image retrieval has become an increasingly appealing technique with broad multimedia
application prospects, where deep hashing serves as the dominant branch towards low storage …

HHF: Hashing-guided hinge function for deep hashing retrieval

C Xu, Z Chai, Z Xu, H Li, Q Zuo… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Deep hashing has shown promising performance in large-scale image retrieval. The hashing
process utilizes Deep Neural Networks (DNNs) to embed images into compact continuous …

Constructing an associative memory system using spiking neural network

…, J Zhao, M Ji, L Dong, N Deng, Y Lei, Z Chai - Frontiers in …, 2019 - frontiersin.org
Development of computer science has led to the blooming of artificial intelligence (AI), and
neural networks are the core of AI research. Although mainstream neural networks have done …

Towards effective collaborative learning in long-tailed recognition

Z Xu, Z Chai, C Xu, C Yuan… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Real-world data usually suffers from severe class imbalance and long-tailed distributions,
where minority classes are significantly underrepresented compared to the majority ones. …