Publications

"*" indicates corresponding author and "#" indicates co-first author.

Journal Publications (Google Scholar Profile)
  1. Bridging Data and Discovery: A Survey on Knowledge Graphs in AI for Science
    Keyan Ding, Zhihui Zhu, Yuqi Tang, Kehua Feng, Xiang Zhuang, Hongwei Wang, Yi Yang, Huifang Du, Zhangkai Ni, Shiqi Wang, Xiaohui Fan, Huabin Xing, Lei Bai, Qi Liu, Haofen Wang, Qiang Zhang, Huajun Chen
    National Science Review, March 2026.
    Paper | Code
  2. Integrated Perception, Communication, and Computation for Autonomous Vehicle and Road Infrastructure Network
    Lu Yang, Jiujun Cheng*, Mengchu Zhou, Cong Liu, Zhangkai Ni*, Mande Xie, Shangce Gao
    IEEE Transactions on Mobile Computing, Accepted, February 2026.
    Paper | Code
  3. Wavelet-Domain Masked Image Modeling for Color-Consistent HDR Video Reconstruction
    Yang Zhang, Zhangkai Ni*, Wenhan Yang, Hanli Wang
    IEEE Transactions on Multimedia, Accepted, February 2026.
    Paper | Code
  4. A Consensus Resistance-Based Autonomous Vehicle Social Group Self-Adaption Method
    Jiujun Cheng, Lu Yang, Zhangkai Ni*, Yuhong Li, Guangtao Zhou, Zhenhua Huang, Shangce Gao
    IEEE Transactions on Computational Social Systems, December 2025.
    Paper | Code
  5. Rethinking Artifact Mitigation in HDR Reconstruction: From Detection to Optimization
    Xinyue Li, Zhangkai Ni*, Hang Wu, Wenhan Yang, Hanli Wang, Lianghua He, and Sam Kwong
    IEEE Transactions on Image Processing, December 2025.
    Paper | Code
  6. Similarity Shuffled Criss-cross Transformer with Angle Loss for Image-text Matching
    Ran Chen, Taiyi Su, Hanli Wang, and Zhangkai Ni
    IEEE Transactions on Multimedia, October 2025.
    Paper | Code
  7. Edge Computing-Based Contributed Perception and Autonomous Vehicle Groups in Open Scenes
    Qichao Mao, Jiujun Cheng*, MengChu Zhou*, Zhangkai Ni*, Shangce Gao, and Chuanhuang Li
    IEEE Transactions on Intelligent Transportation Systems, November 2025.
    Paper | Code
  8. Transferring From Distortion to Perception-Oriented Optimization: Just-Noticeable-Distortion-Based Domain Adaptation
    Xuelin Shen, Haoqiao Ou, Zhangkai Ni, Wenhan Yang, Shiqi Wang, and Sam Kwong.
    IEEE Transactions on Multimedia, September 2025.
    Paper | Code
  9. EIN: Exposure-Induced Network for Single-Image HDR Reconstruction
    Yue Liu, Zhangkai Ni, Peilin Chen, Shiqi Wang, Xinfeng Zhang, Hanli Wang, and Sam Kwong.
    ACM Transactions on Multimedia Computing, Communications and Applications, August 2025.
    Paper | Code
  10. Contributed Perception-Based Dynamic Evolution Method for Autonomous Vehicle Groups in Open Scenes
    Qichao Mao, Jiujun Cheng*, Mengchu Zhou*, Zhangkai Ni*, Guiyuan Yuan, Shangce Gao, and Chuanhuang Li.
    IEEE Transactions on Mobile Computing, July 2025.
    Paper | Code
  11. Semantic Masking with Curriculum Learning for Robust HDR Image Reconstruction
    Zhangkai Ni, Yang Zhang, Kerui Ren, Wenhan Yang, Hanli Wang, and Sam Kwong.
    International Journal of Computer Vision (IJCV), pp. 1-16, July 2025.
    Paper | Code
  12. Structural Similarity-Inspired Unfolding for Lightweight Image Super-Resolution
    Zhangkai Ni*, Yang Zhang, Wenhan Yang, Hanli Wang, Shiqi Wang, and Sam Kwong.
    IEEE Transactions on Image Processing (TIP), vol. 34, pp. 3861-3872, June 2025.
    Paper | Code
  13. Octree-GS: Towards Consistent Real-time Rendering with LOD-Structured 3D Gaussians
    Kerui Ren, Lihan Jiang, Tao Lu, Mulin Yu, Linning Xu, Zhangkai Ni, and Bo Dai.
    IEEE Transactions on Pattern Analysis and Machine Intelligence, Early Access, May 2025.
    Paper | Code
  14. A Unified Software-Defined Autonomous Vehicle Network and Urban Congestion Prediction Method
    Lu Yang, Jiujun Cheng, Yue Zhao, Zhangkai Ni*, Qiachao Mao*, and Shangce Gao.
    IEEE Transactions on Network Science and Engineering (TNSE), vol. 12, no. 4, July 2025.
    Paper | Code
  15. Shell-guided Compression of Voxel Radiance Fields
    Peiqi Yang, Zhangkai Ni*, Hanli Wang, Wenhan Yang, Shiqi Wang, and Sam Kwong.
    IEEE Transactions on Image Processing (TIP), vol. 34, pp. 1179-1191, February 2025.
    Paper | Code
  16. Breaking Boundaries: Unifying Imaging and Compression for HDR Image Compression
    Xuelin Shen, Linfeng Pan, Zhangkai Ni*, Yulin He, Wenhan Yang, Shiqi Wang, and Sam Kwong.
    IEEE Transactions on Image Processing (TIP), vol. 34, pp. 510-521, January 2025.
    Paper | Code
  17. Vision-Language Relational Transformer for Video-to-Text Generation
    Tengpeng Li, Hanli Wang, Qinyu Li, and Zhangkai Ni.
    IEEE Transactions on Multimedia (TMM), vol. 27, pp. 4584-4596, January 2025.
    Paper | Code
  18. M2Trans: Multi-Modal Regularized Coarse-to-Fine Transformer for Ultrasound Image Super-Resolution
    Zhangkai Ni, Runyu Xiao, Wenhan Yang, Hanli Wang, Zhihua Wang, Lihua Xiang, and Liping Sun.
    IEEE Journal of Biomedical and Health Informatics (JBHI), vol. 29, no. 5, pp. 3112-3123, May 2025.
    Paper | Code
  19. Opinion-Unaware Blind Image Quality Assessment using Multi-Scale Deep Feature Statistics
    Zhangkai Ni, Yue Liu, Keyan Ding, Wenhan Yang, Hanli Wang, and Shiqi Wang.
    IEEE Transactions on Multimedia (TMM), vol. 26, pp. 10211-10224, May 2024.
    Paper | Code
  20. A Dynamic Evolution Model for Decentralized Autonomous Car Clusters in a Highway Scene
    Jiujun Cheng, Huiyu Sun, Zhangkai Ni*, Aiguo Zhou, and Dongjie Ye.
    IEEE Transactions on Computational Social Systems (TCSS), vol. 11, no. 3, June 2024.
    Paper | Code
  21. HDRC: A Subjective Quality Assessment Database for Compressed High Dynamic Range Image
    Yue Liu, Zhangkai Ni, Peilin Chen, Shiqi Wang, and Sam Kwong.
    International Journal of Machine Learning and Cybernetics, vol. 15, no. 10, October 2024.
    Paper | Code
  22. CD-iNet: Deep Invertible Network for Perceptual Image Color Difference Measurement
    Zhihua Wang, Keshuo Xu, Keyan Ding, Qiuping Jiang, Yifan Zuo, Zhangkai Ni, and Yuming Fang.
    International Journal of Computer Vision, vol. 132, July 2024.
    Paper | Code
  23. Glow in the Dark: Low-Light Image Enhancement with External Memory
    Dongjie Ye, Zhangkai Ni, Wenhan Yang, Hanli Wang, Shiqi Wang, and Sam Kwong.
    IEEE Transactions on Multimedia (TMM), vol. 26, pp. 2148-2163, July 2023.
    Paper | Code
  24. Neural Network Based Rate Control for Versatile Video Coding
    Yunhao Mao, Meng Wang, Zhangkai Ni, Shiqi Wang, and Sam Kwong.
    IEEE Transactions on Circuits and Systems for Video Technology (TCSVT), vol. 33, no. 10, pp. 6072-6085, October 2023.
    Paper | Code
  25. A CTU-level Screen Content Rate Control for Low-delay Versatile Video Coding
    Yi Chen, Meng Wang, Shiqi Wang, Zhangkai Ni, and Sam Kwong.
    IEEE Transactions on Circuits and Systems for Video Technology (TCSVT), vol. 33, no. 9, pp. 5227-5241, September 2023.
    Paper | Code
  26. High Dynamic Range Image Quality Assessment Based on Frequency Disparity
    Yue Liu, Zhangkai Ni, Shiqi Wang, Hanli Wang, and Sam Kwong.
    IEEE Transactions on Circuits and Systems for Video Technology (TCSVT), vol. 33, no. 8, pp. 4435-4440, August 2023.
    Paper | Code
  27. CSformer: Bridging Convolution and Transformer for Compressive Sensing
    Dongjie Ye, Zhangkai Ni, Hanli Wang, Jian Zhang, Shiqi Wang, and Sam Kwong.
    IEEE Transactions on Image Processing (TIP), vol. 32, pp. 2827-2842, May 2023.
    Paper | Code
  28. Towards Unsupervised Deep Image Enhancement with Generative Adversarial Network
    Zhangkai Ni, Wenhan Yang, Shiqi Wang, Lin Ma, and Sam Kwong.
    IEEE Transactions on Image Processing (TIP), vol. 29, pp. 9140-9151, September 2020.
    Paper | Code
  29. Color Image Demosaicing Using Progressive Collaborative Representation
    Zhangkai Ni, Kai-Kuang Ma, Huanqiang Zeng, and Baojiang Zhong.
    IEEE Transactions on Image Processing (TIP), vol. 29, pp. 4952-4964, March 2020.
    Paper | Code
  30. Just Noticeable Distortion Profile Inference: A Patch-level Structural Visibility Learning Approach
    Xuelin Shen, Zhangkai Ni, Wenhan Yang, Shiqi Wang, Xinfeng Zhang, and Sam Kwong.
    IEEE Transactions on Image Processing (TIP), vol. 30, pp. 26-38, November 2020.
    Paper | Code | Dataset | Project
  31. A Gabor Feature-Based Quality Assessment Model for the Screen Content Images
    Zhangkai Ni, Huanqiang Zeng, Lin Ma, Junhui Hou, Jing Chen, and Kai-Kuang Ma.
    IEEE Transactions on Image Processing (TIP), vol. 27, no. 9, pp. 4516-4528, September 2018.
    Paper | Code | Project
  32. Screen Content Image Quality Assessment Using Multi-Scale Difference of Gaussian
    Ying Fu, Huanqiang Zeng, Lin Ma, Zhangkai Ni, Jianqing Zhu, and Kai-Kuang Ma.
    IEEE Transactions on Circuits and Systems for Video Technology (TCSVT), vol. 28, no. 9, pp. 2428-2432, September 2018.
    Paper | Code
  33. ESIM: Edge Similarity for Screen Content Image Quality Assessment
    Zhangkai Ni, Lin Ma, Huanqiang Zeng, Jing Chen, Canhui Cai, and Kai-Kuang Ma.
    IEEE Transactions on Image Processing (TIP), vol. 26, no. 10, pp. 4818-4831, October 2017.
    Paper | Code | Dataset | Project
  34. Gradient Direction for Screen Content Image Quality Assessment
    Zhangkai Ni, Lin Ma, Huanqiang Zeng, Canhui Cai, and Kai-Kuang Ma.
    IEEE Signal Processing Letters (SPL), vol. 23, no. 10, pp. 1394–1398, August 2016.
    Paper | Code | Project

Conference Publications
  1. TokenErase: Robust Concept Erasure via Visual-Injected Token Optimization
    Liangshun Zou, Zhangkai Ni*, and Hanli Wang.
    In Proceedings of the Conference on Computer Vision and Pattern Recognition (CVPR) Workshops, June 2026
    Paper | Code
  2. All You Need Are Random Visual Tokens? Demystifying Token Pruning in VLLMs
    Yahong Wang#, Juncheng Wu#, Zhangkai Ni*, Longzhen Yang, Yihang Liu, Chengmei Yang, Ying Wen, Xianfeng Tang, Hui Liu, Yuyin Zhou, Lianghua He*.
    In Proceedings of the Conference on Computer Vision and Pattern Recognition (CVPR), June 2026
    Paper | Code
  3. Self-Supervised Anatomical Consistency Learning for Vision-Grounded Medical Report Generation
    Longzhen Yang, Zhangkai Ni, Ying Wen, Yihang Liu, Lianghua He, and Heng Tao Shen.
    In Proceedings of the 33th ACM International Conference on Multimedia (ACM Multimedia), October 2025
    Paper | Code
  4. AFUNet: Cross-Iterative Alignment-Fusion Synergy for HDR Reconstruction via Deep Unfolding Paradigm
    Xinyue Li, Zhangkai Ni*, and Wenhan Yang
    In Proceedings of the International Conference on Computer Vision (ICCV), October 2025.
    Paper | Code
  5. Perceptual-GS: Scene-adaptive Perceptual Densification for Gaussian Splatting
    Hongbi Zhou and Zhangkai Ni*
    In Proceedings of the International Conference on Machine Learning (ICML), July 2025.
    Paper | Code
  6. DDR: Exploiting Deep Degradation Response as Flexible Image Descriptor
    Juncheng Wu, Zhangkai Ni*, Hanli Wang, Wenhan Yang, Yuyin Zhou, and Shiqi Wang
    In Proceedings of the Advances in Neural Information Processing Systems (NeurIPS), December 2024.
    Paper | Code
  7. Unrolled Decomposed Unpaired Learning for Controllable Low-Light Video Enhancement
    Lingyu Zhu, Wenhan Yang, Baoliang Chen, Hanwei Zhu, Zhangkai Ni, Qi Mao, and Shiqi Wang
    In Proceedings of the European Conference on Computer Vision (ECCV), September 2024.
    Paper | Code
  8. Misalignment-Robust Frequency Distribution Loss for Image Transformation
    Zhangkai Ni, Juncheng Wu, Zian Wang, Wenhan Yang, Hanli Wang, and Lin Ma.
    In Proceedings of the Computer Vision and Pattern Recognition Conference (CVPR), June 2024.
    Paper | Code
  9. ColNeRF: Collaboration for Generalizable Sparse Input Neural Radiance Field
    Zhangkai Ni, Peiqi Yang, Wenhan Yang, Hanli Wang, Lin Ma, and Sam Kwong.
    In Proceedings of the 38th Annual AAAI Conference on Artificial Intelligence (AAAI), vol. 38, no. 5, pp.4325-4333, 2024.
    Paper | Code
  10. Cycle-Interactive Generative Adversarial Network for Robust Unsupervised Low-Light Enhancement
    Zhangkai Ni, Wenhan Yang, Hanli Wang, Shiqi Wang, Lin Ma, and Sam Kwong.
    In Proceedings of the 30th ACM International Conference on Multimedia (ACM Multimedia), October 2022
    Paper | Code
  11. Unpaired Image Enhancement with Quality-Attention Generative Adversarial Network
    Zhangkai Ni, Wenhan Yang, Shiqi Wang, Lin Ma, and Sam Kwong.
    In Proceedings of the 28th ACM International Conference on Multimedia (ACM Multimedia), pp. 1697-1705, October 2020
    Paper | Code
  12. A JND Dataset Based on VVC Compressed Images
    Xuelin Shen, Zhangkai Ni, Wenhan Yang, Xinfeng Zhang, Shiqi Wang, and Sam Kwong.
    2020 IEEE International Conference on Multimedia & Expo Workshops (ICMEW), June 2020.
    Paper | Dataset
  13. SCID: A Database for Screen Content Images Quality Assessment
    Zhangkai Ni, Lin Ma, Huanqiang Zeng, Ying Fu, Lu Xing, and Kai-Kuang Ma.
    International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), pp. 774-779, November 2017.
    Paper | Dataset | Project
  14. Screen Content Image Quality Assessment Using Euclidean Distance
    Ying Fu, Huanqiang Zeng, Zhangkai Ni, Jing Chen, Canhui Cai, and Kai-Kuang Ma.
    International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), pp. 44-49, November 2017.
    Paper
  15. Screen Content Image Quality Assessment Using Edge Model
    Zhangkai Ni, Lin Ma, Huanqiang Zeng, Canhui Cai, and Kai-Kuang Ma.
    IEEE International conference on Image Processing (ICIP), pp. 81–85, August 2016.
    Paper | Code

Patents
  1. A Rain Removal Image Post-processing Method Based on Progressive Collaborative Representation
    Huanqiang Zeng, Xiangwei Lin, Zhangkai Ni, Jiuwen Cao, Jianqing Zhu, and Kai-Kuang Ma
    Application No. 10201906356T, July 2019. (Chinese Patent)
  2. Colour Image Demosaicing Using Progressive Collaborative Representation
    Kai-Kuang Ma, and Zhangkai Ni
    Application No. 10201906356T, July 2019. (Singapore Patent)
  3. A Multi-Exposure Fused Image Quality Assessment Method Based on Contrast and Saturation
    Huanqiang Zeng, Lu Xing, Zhangkai Ni, Jiuwen Cao, Canhui Cai, and Kai-Kuang Ma
    Application No. 2016111584053, December 2016. (Chinese Patent)
  4. A Screen Content Image Quality Assessment Method Based on Phase Congruency
    Huanqiang Zeng, Zhangkai Ni, Lin Ma, Jiuwen Cao, Canhui Cai, and Kai-Kuang Ma
    Application No. 2016108863395, October 2016. (Chinese Patent)
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