Search Results for author: Renjie Wan

Found 19 papers, 7 papers with code

Colorizing Monochromatic Radiance Fields

no code implementations19 Feb 2024 Yean Cheng, Renjie Wan, Shuchen Weng, Chengxuan Zhu, Yakun Chang, Boxin Shi

Though Neural Radiance Fields (NeRF) can produce colorful 3D representations of the world by using a set of 2D images, such ability becomes non-existent when only monochromatic images are provided.

Colorization Image Colorization

Spy-Watermark: Robust Invisible Watermarking for Backdoor Attack

no code implementations4 Jan 2024 Ruofei Wang, Renjie Wan, Zongyu Guo, Qing Guo, Rui Huang

Backdoor attack aims to deceive a victim model when facing backdoor instances while maintaining its performance on benign data.

Backdoor Attack backdoor defense

Gene-induced Multimodal Pre-training for Image-omic Classification

no code implementations6 Sep 2023 Ting Jin, Xingran Xie, Renjie Wan, Qingli Li, Yan Wang

Histology analysis of the tumor micro-environment integrated with genomic assays is the gold standard for most cancers in modern medicine.

Classification whole slide images

SuperInpaint: Learning Detail-Enhanced Attentional Implicit Representation for Super-resolutional Image Inpainting

no code implementations26 Jul 2023 Canyu Zhang, Qing Guo, Xiaoguang Li, Renjie Wan, Hongkai Yu, Ivor Tsang, Song Wang

Given the coordinates of a pixel we want to reconstruct, we first collect its neighboring pixels in the input image and extract their detail-enhanced semantic embeddings, unmask-attentional semantic embeddings, importance values, and spatial distances to the desired pixel.

Image Inpainting Image Reconstruction +2

CopyRNeRF: Protecting the CopyRight of Neural Radiance Fields

1 code implementation ICCV 2023 Ziyuan Luo, Qing Guo, Ka Chun Cheung, Simon See, Renjie Wan

Neural Radiance Fields (NeRF) have the potential to be a major representation of media.

Enhancing Low-Light Images Using Infrared-Encoded Images

no code implementations9 Jul 2023 Shulin Tian, YuFei Wang, Renjie Wan, Wenhan Yang, Alex C. Kot, Bihan Wen

In this work, we propose a novel approach to increase the visibility of images captured under low-light environments by removing the in-camera infrared (IR) cut-off filter, which allows for the capture of more photons and results in improved signal-to-noise ratio due to the inclusion of information from the IR spectrum.

Low-Light Image Enhancement

The Age of Synthetic Realities: Challenges and Opportunities

no code implementations9 Jun 2023 João Phillipe Cardenuto, Jing Yang, Rafael Padilha, Renjie Wan, Daniel Moreira, Haoliang Li, Shiqi Wang, Fernanda Andaló, Sébastien Marcel, Anderson Rocha

Synthetic realities are digital creations or augmentations that are contextually generated through the use of Artificial Intelligence (AI) methods, leveraging extensive amounts of data to construct new narratives or realities, regardless of the intent to deceive.

Misinformation

Robust Cross-domain CT Image Reconstruction via Bayesian Noise Uncertainty Alignment

no code implementations26 Feb 2023 Kecheng Chen, Haoliang Li, Renjie Wan, Hong Yan

Under this probabilistic framework, we propose to alleviate the noise distribution shifts between source and target domains via implicit noise modeling schemes in the latent space and image space, respectively.

Computed Tomography (CT) Image Reconstruction

Removing Image Artifacts From Scratched Lens Protectors

1 code implementation11 Feb 2023 YuFei Wang, Renjie Wan, Wenhan Yang, Bihan Wen, Lap-Pui Chau, Alex C. Kot

Removing image artifacts from the scratched lens protector is inherently challenging due to the occasional flare artifacts and the co-occurring interference within mixed artifacts.

JPEG Artifact Removal

Enhancing Low-Light Images in Real World via Cross-Image Disentanglement

no code implementations10 Jan 2022 Lanqing Guo, Renjie Wan, Wenhan Yang, Alex Kot, Bihan Wen

Images captured in the low-light condition suffer from low visibility and various imaging artifacts, e. g., real noise.

Disentanglement Low-Light Image Enhancement

Learning Meta Pattern for Face Anti-Spoofing

1 code implementation13 Oct 2021 Rizhao Cai, Zhi Li, Renjie Wan, Haoliang Li, Yongjian Hu, Alex ChiChung Kot

To improve the generalization ability, recent hybrid methods have been explored to extract task-aware handcrafted features (e. g., Local Binary Pattern) as discriminative information for the input of DNNs.

Domain Generalization Face Anti-Spoofing +1

Low-Light Image Enhancement with Normalizing Flow

1 code implementation13 Sep 2021 YuFei Wang, Renjie Wan, Wenhan Yang, Haoliang Li, Lap-Pui Chau, Alex C. Kot

To enhance low-light images to normally-exposed ones is highly ill-posed, namely that the mapping relationship between them is one-to-many.

Low-Light Image Enhancement

Light Can Hack Your Face! Black-box Backdoor Attack on Face Recognition Systems

no code implementations15 Sep 2020 Haoliang Li, Yufei Wang, Xiaofei Xie, Yang Liu, Shiqi Wang, Renjie Wan, Lap-Pui Chau, Alex C. Kot

In this paper, we propose a novel black-box backdoor attack technique on face recognition systems, which can be conducted without the knowledge of the targeted DNN model.

Backdoor Attack Face Recognition

Reflection Scene Separation From a Single Image

no code implementations CVPR 2020 Renjie Wan, Boxin Shi, Haoliang Li, Ling-Yu Duan, Alex C. Kot

We first propose a strategy to obtain such ground truth and its corresponding input images.

Face Image Reflection Removal

no code implementations3 Mar 2019 Renjie Wan, Boxin Shi, Haoliang Li, Ling-Yu Duan, Alex C. Kot

Face images captured through the glass are usually contaminated by reflections.

Face Recognition Reflection Removal

CRRN: Multi-Scale Guided Concurrent Reflection Removal Network

1 code implementation CVPR 2018 Renjie Wan, Boxin Shi, Ling-Yu Duan, Ah-Hwee Tan, Alex C. Kot

Removing the undesired reflections from images taken through the glass is of broad application to various computer vision tasks.

Reflection Removal

Benchmarking Single-Image Reflection Removal Algorithms

no code implementations ICCV 2017 Renjie Wan, Boxin Shi, Ling-Yu Duan, Ah-Hwee Tan, Alex C. Kot

Removing undesired reflections from a photo taken in front of a glass is of great importance for enhancing the efficiency of visual computing systems.

Benchmarking Reflection Removal

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