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Standard decoding approaches rely on model-based channel estimation methods to compensate for varying channel effects, which degrade in performance whenever there is a model mismatch. Recently proposed Deep learning based neural decoders…

信号处理 · 电气工程与系统科学 2019-03-07 Yihan Jiang , Hyeji Kim , Himanshu Asnani , Sreeram Kannan

Denoising diffusion models enable conditional generation and density modeling of complex relationships like images and text. However, the nature of the learned relationships is opaque making it difficult to understand precisely what…

机器学习 · 计算机科学 2024-05-21 Xianghao Kong , Ollie Liu , Han Li , Dani Yogatama , Greg Ver Steeg

During the acquisition of an image from its source, noise always becomes an integral part of it. Various algorithms have been used in past to denoise the images. Image denoising still has scope for improvement. Visual information…

图像与视频处理 · 电气工程与系统科学 2019-09-17 Santosh Paudel , Ajay Kumar Shrestha , Pradip Singh Maharjan , Rameshwar Rijal

Adversarial purification is one of the promising approaches to defend neural networks against adversarial attacks. Recently, methods utilizing diffusion probabilistic models have achieved great success for adversarial purification in image…

计算机视觉与模式识别 · 计算机科学 2024-08-13 Mingkun Zhang , Jianing Li , Wei Chen , Jiafeng Guo , Xueqi Cheng

With the success of image generation, generative diffusion models are increasingly adopted for discriminative tasks, as pixel generation provides a unified perception interface. However, directly repurposing the generative denoising process…

计算机视觉与模式识别 · 计算机科学 2025-04-16 Ziqi Pang , Xin Xu , Yu-Xiong Wang

Image fusion, a fundamental low-level vision task, aims to integrate multiple image sequences into a single output while preserving as much information as possible from the input. However, existing methods face several significant…

计算机视觉与模式识别 · 计算机科学 2025-03-20 Zihan Cao , Yu Zhong , Ziqi Wang , Liang-Jian Deng

Modeling realistic and interactive multi-agent behavior is critical to autonomous driving and traffic simulation. However, existing diffusion and autoregressive approaches are limited by iterative sampling, sequential decoding, or…

机器人学 · 计算机科学 2025-11-24 Zhiyu Huang , Zewei Zhou , Tianhui Cai , Yun Zhang , Jiaqi Ma

Adversarial attacks are small, carefully crafted perturbations, imperceptible to the naked eye; that when added to an image cause deep learning models to misclassify the image with potentially detrimental outcomes. With the rise of…

计算机视觉与模式识别 · 计算机科学 2019-07-11 Rohan Reddy Mekala , Gudjon Einar Magnusson , Adam Porter , Mikael Lindvall , Madeline Diep

Model inversion attacks (MIAs) aim to reconstruct class-representative samples from trained models. Recent generative MIAs utilize generative adversarial networks to learn image priors that guide the inversion process, yielding…

机器学习 · 计算机科学 2025-09-25 Xiong Peng , Bo Han , Fengfei Yu , Tongliang Liu , Feng Liu , Mingyuan Zhou

Image fusion plays a key role in a variety of multi-sensor-based vision systems, especially for enhancing visual quality and/or extracting aggregated features for perception. However, most existing methods just consider image fusion as an…

计算机视觉与模式识别 · 计算机科学 2023-05-26 Risheng Liu , Zhu Liu , Jinyuan Liu , Xin Fan , Zhongxuan Luo

The reliance on deep learning algorithms has grown significantly in recent years. Yet, these models are highly vulnerable to adversarial attacks, which introduce visually imperceptible perturbations into testing data to induce…

机器学习 · 计算机科学 2019-06-14 Rajeev Sahay , Rehana Mahfuz , Aly El Gamal

Deep learning models can be fooled by small $l_p$-norm adversarial perturbations and natural perturbations in terms of attributes. Although the robustness against each perturbation has been explored, it remains a challenge to address the…

机器学习 · 计算机科学 2023-04-11 Dashan Gao , Yunce Zhao , Yinghua Yao , Zeqi Zhang , Bifei Mao , Xin Yao

We propose a novel approach to mitigate biases in computer vision models by utilizing counterfactual generation and fine-tuning. While counterfactuals have been used to analyze and address biases in DNN models, the counterfactuals…

计算机视觉与模式识别 · 计算机科学 2024-07-01 Pushkar Shukla , Dhruv Srikanth , Lee Cohen , Matthew Turk

With the rise in popularity of machine and deep learning models, there is an increased focus on their vulnerability to malicious inputs. These adversarial examples drift model predictions away from the original intent of the network and are…

计算机视觉与模式识别 · 计算机科学 2020-03-11 Richard Tran , David Patrick , Michael Geyer , Amanda Fernandez

Denoising diffusions are state-of-the-art generative models exhibiting remarkable empirical performance. They work by diffusing the data distribution into a Gaussian distribution and then learning to reverse this noising process to obtain…

机器学习 · 统计学 2024-02-20 Joe Benton , Yuyang Shi , Valentin De Bortoli , George Deligiannidis , Arnaud Doucet

Deep learning models achieve remarkable accuracy in computer vision tasks, yet remain vulnerable to adversarial examples--carefully crafted perturbations to input images that can deceive these models into making confident but incorrect…

计算机视觉与模式识别 · 计算机科学 2025-04-18 Khoi Nguyen Tiet Nguyen , Wenyu Zhang , Kangkang Lu , Yuhuan Wu , Xingjian Zheng , Hui Li Tan , Liangli Zhen

Recent advancements in diffusion-based imitation learning, which show impressive performance in modeling multimodal distributions and training stability, have led to substantial progress in various robot learning tasks. In visual…

机器人学 · 计算机科学 2025-04-15 Hao Ren , Yiming Zeng , Zetong Bi , Zhaoliang Wan , Junlong Huang , Hui Cheng

Learned denoisers play a fundamental role in various signal generation (e.g., diffusion models) and reconstruction (e.g., compressed sensing) architectures, whose success derives from their ability to leverage low-dimensional structure in…

机器学习 · 计算机科学 2025-08-14 Shiyu Wang , Mariam Avagyan , Yihan Shen , Arnaud Lamy , Tingran Wang , Szabolcs Márka , Zsuzsa Márka , John Wright

The detection of malicious deepfakes is a constantly evolving problem that requires continuous monitoring of detectors to ensure they can detect image manipulations generated by the latest emerging models. In this paper, we investigate the…

计算机视觉与模式识别 · 计算机科学 2023-10-31 Marija Ivanovska , Vitomir Štruc

Fooling people with highly realistic fake images generated with Deepfake or GANs brings a great social disturbance to our society. Many methods have been proposed to detect fake images, but they are vulnerable to adversarial perturbations…

计算机视觉与模式识别 · 计算机科学 2021-06-04 Quanyu Liao , Yuezun Li , Xin Wang , Bin Kong , Bin Zhu , Siwei Lyu , Youbing Yin , Qi Song , Xi Wu
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