no code implementations • 1 Mar 2024 • Yuhao Liu, Zhanghan Ke, Fang Liu, Nanxuan Zhao, Rynson W. H. Lau
Diffusion models trained on large-scale datasets have achieved remarkable progress in image synthesis.
no code implementations • 1 Feb 2024 • Yuhao Liu, Zhanghan Ke, Ke Xu, Fang Liu, Zhenwei Wang, Rynson W. H. Lau
Based on this observation, we propose to condition the restoration of attenuated textures on the corrected local lighting in the shadow region.
no code implementations • 18 Sep 2023 • Lei Zhu, Zhanghan Ke, Rynson Lau
In this work, we observe that the distribution gap between the confidence values of correct and incorrect pseudo labels emerges at the very beginning of the training, which can be utilized to filter pseudo labels.
1 code implementation • CVPR 2023 • Zhanghan Ke, Yuhao Liu, Lei Zhu, Nanxuan Zhao, Rynson W. H. Lau
In this paper, we present a Neural Preset technique to address the limitations of existing color style transfer methods, including visual artifacts, vast memory requirement, and slow style switching speed.
1 code implementation • CVPR 2023 • Lei Zhu, Xinjiang Wang, Zhanghan Ke, Wayne Zhang, Rynson Lau
As the core building block of vision transformers, attention is a powerful tool to capture long-range dependency.
Ranked #9 on Object Detection on COCO 2017 (mAP metric)
no code implementations • 9 Jan 2023 • Yuhao Liu, Qing Guo, Lan Fu, Zhanghan Ke, Ke Xu, Wei Feng, Ivor W. Tsang, Rynson W. H. Lau
Hence, in this paper, we propose to remove shadows at the image structure level.
1 code implementation • 4 Jul 2022 • Zhanghan Ke, Chunyi Sun, Lei Zhu, Ke Xu, Rynson W. H. Lau
Unlike prior methods that are based on black-box autoencoders, Harmonizer contains a neural network for filter argument prediction and several white-box filters (based on the predicted arguments) for image harmonization.
Ranked #7 on Image Harmonization on iHarmony4
1 code implementation • 24 Sep 2021 • Jiayu Sun, Zhanghan Ke, Lihe Zhang, Huchuan Lu, Rynson W. H. Lau
In this work, we observe that instead of asking the user to explicitly provide a background image, we may recover it from the input video itself.
no code implementations • 1 Jan 2021 • Di Qiu, Zhanghan Ke, Peng Su, Lok Ming Lui
Many important problems in the real world don't have unique solutions.
no code implementations • ICCV 2021 • Lei Zhu, Ke Xu, Zhanghan Ke, Rynson W.H. Lau
These two phenomenons reveal that deep shadow detectors heavily depend on the intensity cue, which we refer to as intensity bias.
9 code implementations • 24 Nov 2020 • Zhanghan Ke, Jiayu Sun, Kaican Li, Qiong Yan, Rynson W. H. Lau
MODNet is easy to be trained in an end-to-end manner.
Ranked #1 on Image Matting on PPM-100
no code implementations • 12 Aug 2020 • Di Qiu, Jin Zeng, Zhanghan Ke, Wenxiu Sun, Chengxi Yang
By incorporating the depth map, our approach is able to extrapolate realistic high-frequency effects under novel lighting via geometry guided image decomposition from the flashlight image, and predict the cast shadow map from the shadow-encoding transformed depth map.
1 code implementation • ECCV 2020 • Zhanghan Ke, Di Qiu, Kaican Li, Qiong Yan, Rynson W. H. Lau
Although SSL methods have achieved impressive results in image classification, the performances of applying them to pixel-wise tasks are unsatisfactory due to their need for dense outputs.
2 code implementations • ICCV 2019 • Zhanghan Ke, Daoye Wang, Qiong Yan, Jimmy Ren, Rynson W. H. Lau
In this work, we show that the coupled EMA teacher causes a performance bottleneck.
Semi-Supervised Image Classification Unsupervised Domain Adaptation