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Zhanghan Ke

9 accepted papers

2024

Diff-Plugin: Revitalizing Details for Diffusion-based Low-level Tasks

CVPR 2024poster

Diffusion models trained on large-scale datasets have achieved remarkable progress in image synthesis. However due to the randomness in the diffusion process they often struggle with handling diverse low-level tasks that require details preservation. To overcome this limitation we present a new Diff…

Cited by 23SourcePDFScholar
2024

Recasting Regional Lighting for Shadow Removal

AAAI 2024technical

Removing shadows requires an understanding of both lighting conditions and object textures in a scene. Existing methods typically learn pixel-level color mappings between shadow and non-shadow images, in which the joint modeling of lighting and object textures is implicit and inadequate. We observe…

2023

BiFormer: Vision Transformer With Bi-Level Routing Attention

CVPR 2023poster

As the core building block of vision transformers, attention is a powerful tool to capture long-range dependency. However, such power comes at a cost: it incurs a huge computation burden and heavy memory footprint as pairwise token interaction across all spatial locations is computed. A series of wo…

2022

Harmonizer: Learning to Perform White-Box Image and Video Harmonization

ECCV 2022poster

"Recent works on image harmonization solve the problem as a pixel-wise image translation task via large autoencoders. They have unsatisfactory performances and slow inference speeds when dealing with high-resolution images. In this work, we observe that adjusting the input arguments of basic image f…

2022

MODNet: Real-Time Trimap-Free Portrait Matting via Objective Decomposition

AAAI 2022technical

Existing portrait matting methods either require auxiliary inputs that are costly to obtain or involve multiple stages that are computationally expensive, making them less suitable for real-time applications. In this work, we present a light-weight matting objective decomposition network (MODNet) fo…

2021

Mitigating Intensity Bias in Shadow Detection via Feature Decomposition and Reweighting

ICCV 2021poster

While CNNs achieved remarkable progress in shadow detection, they tend to make mistakes in dark non-shadow regions and relatively bright shadow regions. They are also susceptible to brightness change. These two phenomenons reveal that deep shadow detectors heavily depend on the intensity cue, which…

Cited by 78PDFScholar
2020

Guided Collaborative Training for Pixel-wise Semi-Supervised Learning

ECCV 2020poster

We investigate the generalization of semi-supervised learning (SSL) to diverse pixel-wise tasks. 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. In addition, e…

2019

Dual Student: Breaking the Limits of the Teacher in Semi-Supervised Learning

ICCV 2019poster

Recently, consistency-based methods have achieved state-of-the-art results in semi-supervised learning (SSL). These methods always involve two roles, an explicit or implicit teacher model and a student model, and penalize predictions under different perturbations by a consistency constraint. However…

Cited by 314PDFcodeScholar