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Autonomous systems are highly vulnerable to a variety of adversarial attacks on Deep Neural Networks (DNNs). Training-free model-agnostic defenses have recently gained popularity due to their speed, ease of deployment, and ability to work…

Image and Video Processing · Electrical Eng. & Systems 2021-12-30 Kartikeya Bhardwaj , Dibakar Gope , James Ward , Paul Whatmough , Danny Loh

Object Recognition and Document Skew Estimation have come a long way in terms of performance and efficiency. New models follow one of two directions: improving performance using larger models, and improving efficiency using smaller models.…

Computer Vision and Pattern Recognition · Computer Science 2025-09-09 Lucas Wojcik , Luiz Coelho , Roger Granada , David Menotti

Image super-resolution(SR) is fundamental to many vision system-from surveillance and autonomy to document analysis and retail analytics-because recovering high-frequency details, especially scene-text, enables reliable downstream…

Computer Vision and Pattern Recognition · Computer Science 2025-10-31 Mingyu Sung , Seungjae Ham , Kangwoo Kim , Yeokyoung Yoon , Sangseok Yun , Il-Min Kim , Jae-Mo Kang

Since the first success of Dong et al., the deep-learning-based approach has become dominant in the field of single-image super-resolution. This replaces all the handcrafted image processing steps of traditional sparse-coding-based methods…

Computer Vision and Pattern Recognition · Computer Science 2022-07-20 Shunta Maeda

Most existing image restoration methods use neural networks to learn strong image-level priors from huge data to estimate the lost information. However, these works still struggle in cases when images have severe information deficits.…

Computer Vision and Pattern Recognition · Computer Science 2023-03-01 Yunpeng Bai , Cairong Wang , Shuzhao Xie , Chao Dong , Chun Yuan , Zhi Wang

Synthetic image generation has recently experienced significant improvements in domains such as natural image or art generation. However, the problem of figure and diagram generation remains unexplored. A challenging aspect of generating…

Computer Vision and Pattern Recognition · Computer Science 2022-10-26 Juan A. Rodriguez , David Vazquez , Issam Laradji , Marco Pedersoli , Pau Rodriguez

Weakly supervised semantic segmentation is typically inspired by class activation maps, which serve as pseudo masks with class-discriminative regions highlighted. Although tremendous efforts have been made to recall precise and complete…

Computer Vision and Pattern Recognition · Computer Science 2023-03-15 Zesen Cheng , Pengchong Qiao , Kehan Li , Siheng Li , Pengxu Wei , Xiangyang Ji , Li Yuan , Chang Liu , Jie Chen

Image-text retrieval, as a fundamental and important branch of information retrieval, has attracted extensive research attentions. The main challenge of this task is cross-modal semantic understanding and matching. Some recent works focus…

Computer Vision and Pattern Recognition · Computer Science 2023-04-24 Weijing Chen , Linli Yao , Qin Jin

Retrieval-Augmented Generation (RAG) has become a popular technique for enhancing the reliability and utility of Large Language Models (LLMs) by grounding responses in external documents. Traditional RAG systems rely on Optical Character…

Computer Vision and Pattern Recognition · Computer Science 2025-05-12 Alexander Most , Joseph Winjum , Ayan Biswas , Shawn Jones , Nishath Rajiv Ranasinghe , Dan O'Malley , Manish Bhattarai

Optical Character Recognition (OCR) technology is widely used to extract text from images of documents, facilitating efficient digitization and data retrieval. However, merely extracting text is insufficient when dealing with complex…

Robust text reading from street view images provides valuable information for various applications. Performance improvement of existing methods in such a challenging scenario heavily relies on the amount of fully annotated training data,…

Computer Vision and Pattern Recognition · Computer Science 2019-09-18 Yipeng Sun , Zihan Ni , Chee-Kheng Chng , Yuliang Liu , Canjie Luo , Chun Chet Ng , Junyu Han , Errui Ding , Jingtuo Liu , Dimosthenis Karatzas , Chee Seng Chan , Lianwen Jin

The proliferation of scene text in both structured and unstructured environments presents significant challenges in optical character recognition (OCR), necessitating more efficient and robust text spotting solutions. This paper presents…

Computer Vision and Pattern Recognition · Computer Science 2025-03-13 Alloy Das , Sanket Biswas , Umapada Pal , Josep Lladós , Saumik Bhattacharya

The existing Optical Character Recognition (OCR) systems are capable of recognizing images with horizontal texts. However, when the rotation of the texts increases, it becomes harder to recognizing these texts. The performance of the OCR…

Computer Vision and Pattern Recognition · Computer Science 2022-09-20 Michael Yang , Yuan Lin , ChiuMan Ho

Scene text image super-resolution (STISR), aiming to improve image quality while boosting downstream scene text recognition accuracy, has recently achieved great success. However, most existing methods treat the foreground (character…

Computer Vision and Pattern Recognition · Computer Science 2023-08-01 Hang Guo , Tao Dai , Guanghao Meng , Shu-Tao Xia

With the recent advancement in deep learning, we have witnessed a great progress in single image super-resolution. However, due to the significant information loss of the image downscaling process, it has become extremely challenging to…

Computer Vision and Pattern Recognition · Computer Science 2018-04-11 Zhifei Zhang , Zhaowen Wang , Zhe Lin , Hairong Qi

Scene text recognition is a hot research topic in computer vision. Recently, many recognition methods based on the encoder-decoder framework have been proposed, and they can handle scene texts of perspective distortion and curve shape.…

Computer Vision and Pattern Recognition · Computer Science 2020-05-25 Zhi Qiao , Yu Zhou , Dongbao Yang , Yucan Zhou , Weiping Wang

Typical text recognition methods rely on an encoder-decoder structure, in which the encoder extracts features from an image, and the decoder produces recognized text from these features. In this study, we propose a simpler and more…

Computer Vision and Pattern Recognition · Computer Science 2023-08-31 Masato Fujitake

Recent studies of deep learning based stereo image super-resolution (StereoSR) have promoted the development of StereoSR. However, existing StereoSR models mainly concentrate on improving quantitative evaluation metrics and neglect the…

Image and Video Processing · Electrical Eng. & Systems 2022-07-15 Chenxi Ma , Bo Yan , Weimin Tan , Xuhao Jiang

Recent advancements in super-resolution for License Plate Recognition (LPR) have sought to address challenges posed by low-resolution (LR) and degraded images in surveillance, traffic monitoring, and forensic applications. However, existing…

Computer Vision and Pattern Recognition · Computer Science 2025-07-09 Valfride Nascimento , Gabriel E. Lima , Rafael O. Ribeiro , William Robson Schwartz , Rayson Laroca , David Menotti

Solving the problem of Optical Character Recognition (OCR) on printed text for Latin and its derivative scripts can now be considered settled due to the volumes of research done on English and other High-Resourced Languages (HRL). However,…

Computation and Language · Computer Science 2025-08-26 Nevidu Jayatilleke , Nisansa de Silva