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Despite significant advancements in License Plate Recognition (LPR) through deep learning, most improvements rely on high-resolution images with clear characters. This scenario does not reflect real-world conditions where traffic…

计算机视觉与模式识别 · 计算机科学 2024-10-22 Valfride Nascimento , Rayson Laroca , Rafael O. Ribeiro , William Robson Schwartz , David Menotti

License plate recognition (LPR) is important for traffic law enforcement, crime investigation, and surveillance. However, license plate areas in dash cam images often suffer from low resolution, motion blur, and glare, which make accurate…

计算机视觉与模式识别 · 计算机科学 2025-08-21 Kihyun Na , Junseok Oh , Youngkwan Cho , Bumjin Kim , Sungmin Cho , Jinyoung Choi , Injung Kim

In surveillance, accurately recognizing license plates is hindered by their often low quality and small dimensions, compromising recognition precision. Despite advancements in AI-based image super-resolution, methods like Convolutional…

计算机视觉与模式识别 · 计算机科学 2024-09-04 Sawsan AlHalawani , Bilel Benjdira , Adel Ammar , Anis Koubaa , Anas M. Ali

Recent years have seen significant developments in the field of License Plate Recognition (LPR) through the integration of deep learning techniques and the increasing availability of training data. Nevertheless, reconstructing license…

计算机视觉与模式识别 · 计算机科学 2023-05-30 Valfride Nascimento , Rayson Laroca , Jorge de A. Lambert , William Robson Schwartz , David Menotti

The License Plate Recognition (LPR) field has made impressive advances in the last decade due to novel deep learning approaches combined with the increased availability of training data. However, it still has some open issues, especially…

计算机视觉与模式识别 · 计算机科学 2023-01-02 Valfride Nascimento , Rayson Laroca , Jorge de A. Lambert , William Robson Schwartz , David Menotti

Existing methods for restoring degraded human-centric images often struggle with insufficient fidelity, particularly in human body restoration (HBR). Recent diffusion-based restoration methods commonly adapt pre-trained text-to-image…

计算机视觉与模式识别 · 计算机科学 2026-02-05 Jue Gong , Zihan Zhou , Jingkai Wang , Shu Li , Libo Liu , Jianliang Lan , Yulun Zhang

License plate detection (LPD) is essential for traffic management, vehicle tracking, and law enforcement but faces challenges like variable lighting and diverse font types, impacting accuracy. Traditionally reliant on image processing and…

计算机视觉与模式识别 · 计算机科学 2024-12-18 Zahra Ebrahimi Vargoorani , Ching Yee Suen

License plate detection and recognition (LPDR) is of growing importance for enabling intelligent transportation and ensuring the security and safety of the cities. However, LPDR faces a big challenge in a practical environment. The license…

计算机视觉与模式识别 · 计算机科学 2022-11-03 Xuewen Yang , Xin Wang

Old-photo face restoration poses significant challenges due to compounded degradations such as breakage, fading, and severe blur. Existing pre-trained diffusion-guided methods either rely on explicit degradation priors or global statistical…

计算机视觉与模式识别 · 计算机科学 2025-10-15 Wenjie Li , Xiangyi Wang , Heng Guo , Guangwei Gao , Zhanyu Ma

This paper introduces LLDif, a novel diffusion-based facial expression recognition (FER) framework tailored for extremely low-light (LL) environments. Images captured under such conditions often suffer from low brightness and significantly…

计算机视觉与模式识别 · 计算机科学 2024-08-09 Zhifeng Wang , Kaihao Zhang , Ramesh Sankaranarayana

Real-world documents may suffer various forms of degradation, often resulting in lower accuracy in optical character recognition (OCR) systems. Therefore, a crucial preprocessing step is essential to eliminate noise while preserving text…

计算机视觉与模式识别 · 计算机科学 2024-04-09 Giordano Cicchetti , Danilo Comminiello

Recent generative-prior-based methods have shown promising blind face restoration performance. They usually project the degraded images to the latent space and then decode high-quality faces either by single-stage latent optimization or…

计算机视觉与模式识别 · 计算机科学 2024-02-12 Maitreya Suin , Rama Chellappa

Removing blur caused by moving objects is challenging, as the moving objects are usually significantly blurry while the static background remains clear. Existing methods that rely on local blur detection often suffer from inaccuracies and…

计算机视觉与模式识别 · 计算机科学 2024-12-13 Zhongbao Yang , Jiangxin Dong , Jinhui Tang , Jinshan Pan

Diffusion models have achieved promising results in image restoration tasks, yet suffer from time-consuming, excessive computational resource consumption, and unstable restoration. To address these issues, we propose a robust and efficient…

计算机视觉与模式识别 · 计算机科学 2023-09-26 Hai Jiang , Ao Luo , Songchen Han , Haoqiang Fan , Shuaicheng Liu

Recently, diffusion-based blind super-resolution (SR) methods have shown great ability to generate high-resolution images with abundant high-frequency detail, but the detail is often achieved at the expense of fidelity. Meanwhile, another…

图像与视频处理 · 电气工程与系统科学 2025-12-02 Shao-Hao Lu , Ren Wang , Ching-Chun Huang , Wei-Chen Chiu

Degraded images commonly exist in the general sources of character images, leading to unsatisfactory character recognition results. Existing methods have dedicated efforts to restoring degraded character images. However, the denoising…

计算机视觉与模式识别 · 计算机科学 2022-07-20 Daqian Shi , Xiaolei Diao , Lida Shi , Hao Tang , Yang Chi , Chuntao Li , Hao Xu

Although most current license plate (LP) recognition applications have been significantly advanced, they are still limited to ideal environments where training data are carefully annotated with constrained scenes. In this paper, we propose…

计算机视觉与模式识别 · 计算机科学 2019-10-11 Younkwan Lee , Jiwon Jun , Yoojin Hong , Moongu Jeon

Automatic License Plate Recognition (ALPR) is becoming a popular study area and is applied in many fields such as transportation or smart city. However, there are still several limitations when applying many current methods to practical…

计算机视觉与模式识别 · 计算机科学 2023-09-14 Quang Huy Che , Tung Do Thanh , Cuong Truong Van

Removing degradation from document images not only improves their visual quality and readability, but also enhances the performance of numerous automated document analysis and recognition tasks. However, existing regression-based methods…

计算机视觉与模式识别 · 计算机科学 2023-08-10 Zongyuan Yang , Baolin Liu , Yongping Xiong , Lan Yi , Guibin Wu , Xiaojun Tang , Ziqi Liu , Junjie Zhou , Xing Zhang

Adverse Weather Image Restoration (AWIR) is a highly challenging task due to the unpredictable and dynamic nature of weather-related degradations. Traditional task-specific methods often fail to generalize to unseen or complex degradation…

计算机视觉与模式识别 · 计算机科学 2025-09-23 Wenxuan Fang , Jili Fan , Chao Wang , Xiantao Hu , Jiangwei Weng , Ying Tai , Jian Yang , Jun Li
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