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Image super-resolution pursuits reconstructing high-fidelity high-resolution counterpart for low-resolution image. In recent years, diffusion-based models have garnered significant attention due to their capabilities with rich prior…

Computer Vision and Pattern Recognition · Computer Science 2024-10-22 Aiwen Jiang , Zhi Wei , Long Peng , Feiqiang Liu , Wenbo Li , Mingwen Wang

We analyze (stochastic) gradient descent (SGD) with delayed updates on smooth quasi-convex and non-convex functions and derive concise, non-asymptotic, convergence rates. We show that the rate of convergence in all cases consists of two…

Machine Learning · Computer Science 2021-06-17 Sebastian U. Stich , Sai Praneeth Karimireddy

We propose a method for lossy image compression based on recurrent, convolutional neural networks that outperforms BPG (4:2:0 ), WebP, JPEG2000, and JPEG as measured by MS-SSIM. We introduce three improvements over previous research that…

Computer Vision and Pattern Recognition · Computer Science 2017-03-30 Nick Johnston , Damien Vincent , David Minnen , Michele Covell , Saurabh Singh , Troy Chinen , Sung Jin Hwang , Joel Shor , George Toderici

It has been widely recognized that the success of deep learning in image segmentation relies overwhelmingly on a myriad amount of densely annotated training data, which, however, are difficult to obtain due to the tremendous labor and…

Computer Vision and Pattern Recognition · Computer Science 2020-11-26 Yutong Xie , Jianpeng Zhang , Zehui Liao , Yong Xia , Chunhua Shen

3D Gaussian Splatting SLAM has emerged as a widely used technique for high-fidelity mapping in spatial intelligence. However, existing methods often rely on a single representation scheme, which limits their performance in large-scale…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Wenkai Zhu , Xu Li , Qimin Xu , Benwu Wang , Kun Wei , Yiming Peng , Zihang Wang

Adversarial attacks can readily disrupt the image classification system, revealing the vulnerability of DNN-based recognition tasks. While existing adversarial perturbations are primarily applied to uncompressed images or compressed images…

Computer Vision and Pattern Recognition · Computer Science 2024-11-08 Yang Sui , Zhuohang Li , Ding Ding , Xiang Pan , Xiaozhong Xu , Shan Liu , Zhenzhong Chen

LiDAR loop closure detection (LCD) is crucial for consistent Simultaneous Localization and Mapping (SLAM) but faces challenges in robustness and accuracy. Existing methods, including semantic graph approaches, often suffer from coarse…

Computer Vision and Pattern Recognition · Computer Science 2025-05-08 Xiong Li , Shulei Liu , Xingning Chen , Yisong Wu , Dong Zhu

A number of results have recently demonstrated the benefits of incorporating various constraints when training deep architectures in vision and machine learning. The advantages range from guarantees for statistical generalization to better…

Machine Learning · Computer Science 2019-05-27 Sathya N. Ravi , Tuan Dinh , Vishnu Lokhande , Vikas Singh

Deep neural networks have demonstrated highly competitive performance in super-resolution (SR) for natural images by learning mappings from low-resolution (LR) to high-resolution (HR) images. However, hyperspectral super-resolution remains…

Image and Video Processing · Electrical Eng. & Systems 2025-05-02 Usman Muhammad , Jorma Laaksonen , Lyudmila Mihaylova

The optimization algorithms are crucial in training physics-informed neural networks (PINNs), as unsuitable methods may lead to poor solutions. Compared to the common gradient descent (GD) algorithm, implicit gradient descent (IGD)…

Machine Learning · Computer Science 2025-08-04 Xianliang Xu , Ting Du , Wang Kong , Bin Shan , Ye Li , Zhongyi Huang

Publicly available diabetic retinopathy (DR) datasets are imbalanced, containing limited numbers of images with DR. This imbalance contributes to overfitting when training machine learning classifiers. The impact of this imbalance is…

Image and Video Processing · Electrical Eng. & Systems 2023-08-31 Cristina-Madalina Dragan , Muhammad Muneeb Saad , Mubashir Husain Rehmani , Ruairi O'Reilly

In recent years, neural network-driven image compression (NIC) has gained significant attention. Some works adopt deep generative models such as GANs and diffusion models to enhance perceptual quality (realism). A critical obstacle of these…

Computer Vision and Pattern Recognition · Computer Science 2024-05-28 Shoma Iwai , Tomo Miyazaki , Shinichiro Omachi

Conventional image compression methods typically aim at pixel-level consistency while ignoring the performance of downstream AI tasks.To solve this problem, this paper proposes a Semantic-Assisted Image Compression method (SAIC), which can…

Computer Vision and Pattern Recognition · Computer Science 2022-02-01 Qizheng Sun , Caili Guo , Yang Yang , Jiujiu Chen , Xijun Xue

Visual language models (VLMs) have made significant progress in image captioning tasks, yet recent studies have found they are vulnerable to backdoor attacks. Attackers can inject undetectable perturbations into the data during inference,…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Shuhan Xu , Siyuan Liang , Hongling Zheng , Aishan Liu , Xinbiao Wang , Yong Luo , Fu Lin , Leszek Rutkowski , Dacheng Tao

Although recent generative image compression methods have demonstrated impressive potential in optimizing the rate-distortion-perception trade-off, they still face the critical challenge of flexible rate adaption to diverse compression…

Image and Video Processing · Electrical Eng. & Systems 2025-07-22 Anqi Li , Feng Li , Yuxi Liu , Runmin Cong , Yao Zhao , Huihui Bai

How can local-search methods such as stochastic gradient descent (SGD) avoid bad local minima in training multi-layer neural networks? Why can they fit random labels even given non-convex and non-smooth architectures? Most existing theory…

Machine Learning · Computer Science 2019-05-28 Zeyuan Allen-Zhu , Yuanzhi Li , Zhao Song

The Projected Gradient Descent (PGD) algorithm is a widely used and efficient first-order method for solving constrained optimization problems due to its simplicity and scalability in large design spaces. Building on recent advancements in…

Optimization and Control · Mathematics 2025-06-18 Lucka Barbeau , Marc-Étienne Lamarche-Gagnon , Florin Ilinca

Neural image codecs achieve higher compression ratios than traditional hand-crafted methods such as PNG or JPEG-XL, but often incur substantial computational overhead, limiting their deployment on energy-constrained devices such as…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Till Aczel , David F. Jenny , Simon Bührer , Andreas Plesner , Antonio Di Maio , Roger Wattenhofer

Generative image compression has recently shown impressive perceptual quality, but often suffers from semantic deviations caused by generative hallucinations at ultra-low bitrate (bpp < 0.05), limiting its reliable deployment in…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Kaile Wang , Lijun He , Haisheng Fu , Haixia Bi , Fan Li

Computationally expensive training strategies make self-supervised learning (SSL) impractical for resource constrained industrial settings. Techniques like knowledge distillation (KD), dynamic computation (DC), and pruning are often used to…