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Image restoration aims to reconstruct degraded images, e.g., denoising or deblurring. Existing works focus on designing task-specific methods and there are inadequate attempts at universal methods. However, simply unifying multiple tasks…

Computer Vision and Pattern Recognition · Computer Science 2023-06-26 Jiaqi Ma , Tianheng Cheng , Guoli Wang , Qian Zhang , Xinggang Wang , Lefei Zhang

In recent years, tremendous efforts have been made on document image rectification, but existing advanced algorithms are limited to processing restricted document images, i.e., the input images must incorporate a complete document. Once the…

Computer Vision and Pattern Recognition · Computer Science 2023-12-19 Hao Feng , Shaokai Liu , Jiajun Deng , Wengang Zhou , Houqiang Li

Compared with flatbed scanners, portable smartphones provide more convenience for physical document digitization. However, such digitized documents are often distorted due to uncontrolled physical deformations, camera positions, and…

Computer Vision and Pattern Recognition · Computer Science 2022-12-27 Hao Feng , Wengang Zhou , Jiajun Deng , Qi Tian , Houqiang Li

Document image segmentation is crucial for document analysis and recognition but remains challenging due to the diversity of document formats and segmentation tasks. Existing methods often address these tasks separately, resulting in…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Xiao-Hui Li , Fei Yin , Cheng-Lin Liu

Recently, significant breakthroughs have been made in all-in-one image restoration (AiOIR), which can handle multiple restoration tasks with a single model. However, existing methods typically focus on a specific image domain, such as…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Guanglu Dong , Chunlei Li , Chao Ren , Jingliang Hu , Yilei Shi , Xiao Xiang Zhu , Lichao Mou

Single-image super-resolution refers to the reconstruction of a high-resolution image from a single low-resolution observation. Although recent deep learning-based methods have demonstrated notable success on simulated datasets -- with…

Computer Vision and Pattern Recognition · Computer Science 2025-06-10 Maciej Zyrek , Tomasz Tarasiewicz , Jakub Sadel , Aleksandra Krzywon , Michal Kawulok

Utilizing large language models (LLMs) for zero-shot document ranking is done in one of two ways: (1) prompt-based re-ranking methods, which require no further training but are only feasible for re-ranking a handful of candidate documents…

Information Retrieval · Computer Science 2024-10-22 Shengyao Zhuang , Xueguang Ma , Bevan Koopman , Jimmy Lin , Guido Zuccon

Medical image analysis typically includes several tasks such as enhancement, segmentation, and classification. Traditionally, these tasks are implemented using separate deep learning models for separate tasks, which is not efficient because…

Computer Vision and Pattern Recognition · Computer Science 2021-06-09 Ghada Zamzmi , Sivaramakrishnan Rajaraman , Sameer Antani

In the real world, documents are organized in different formats and varied modalities. Traditional retrieval pipelines require tailored document parsing techniques and content extraction modules to prepare input for indexing. This process…

Information Retrieval · Computer Science 2024-12-03 Xueguang Ma , Sheng-Chieh Lin , Minghan Li , Wenhu Chen , Jimmy Lin

In Document Understanding, the challenge of reconstructing damaged, occluded, or incomplete text remains a critical yet unexplored problem. Subsequent document understanding tasks can benefit from a document reconstruction process. In…

Computer Vision and Pattern Recognition · Computer Science 2026-05-25 Kunal Purkayastha , Ayan Banerjee , Josep Llados , Umapada Pal

Deformed document image rectification is essential for real-world document understanding tasks, such as layout analysis and text recognition. However, current multi-task methods -- such as background removal, 3D coordinate prediction, and…

Computer Vision and Pattern Recognition · Computer Science 2025-05-12 Heng Li , Xiangping Wu , Qingcai Chen

Image restoration has always been a cutting-edge topic in the academic and industrial fields of computer vision. Since degradation signals are often random and diverse, "all-in-one" models that can do blind image restoration have been…

Computer Vision and Pattern Recognition · Computer Science 2023-12-12 Qiuhai Yan , Aiwen Jiang , Kang Chen , Long Peng , Qiaosi Yi , Chunjie Zhang

For capturing colored document images, e.g. posters and magazines, it is common that multiple degradations such as shadows, wrinkles, etc., are simultaneously introduced due to external factors. Restoring multi-degraded colored document…

Computer Vision and Pattern Recognition · Computer Science 2023-10-30 Chaowei Liu , Jichun Li , Yihua Teng , Chaoqun Wang , Nuo Xu , Jihao Wu , Dandan Tu

Text spotting, a task involving the extraction of textual information from image or video sequences, faces challenges in cross-domain adaption, such as image-to-image and image-to-video generalization. In this paper, we introduce a new…

Computer Vision and Pattern Recognition · Computer Science 2024-12-06 Yuliang Liu , Mingxin Huang , Hao Yan , Linger Deng , Weijia Wu , Hao Lu , Chunhua Shen , Lianwen Jin , Xiang Bai

Image processing is a fundamental task in computer vision, which aims at enhancing image quality and extracting essential features for subsequent vision applications. Traditionally, task-specific models are developed for individual tasks…

Computer Vision and Pattern Recognition · Computer Science 2024-02-22 Yihao Liu , Xiangyu Chen , Xianzheng Ma , Xintao Wang , Jiantao Zhou , Yu Qiao , Chao Dong

Recent advances in vision-language models have demonstrated remarkable performance across diverse multi-modal tasks, including document question answering that leverages structured visual cues from text, tables, and figures. However, unlike…

Computer Vision and Pattern Recognition · Computer Science 2026-04-27 Joonmyung Choi , Sanghyeok Lee , Jongha Kim , Sehyung Kim , Dohwan Ko , Jihyung Kil , Hyunwoo J. Kim

With AI-generated content becoming ubiquitous across the web, social media, and other digital platforms, it is vital to examine how such content are inspired and generated. The creation of AI-generated images often involves refining the…

Artificial Intelligence · Computer Science 2025-04-30 Khoi Trinh , Scott Seidenberger , Raveen Wijewickrama , Murtuza Jadliwala , Anindya Maiti

Flattening curved, wrinkled, and rotated document images captured by portable photographing devices, termed document image dewarping, has become an increasingly important task with the rise of digital economy and online working. Although…

Computer Vision and Pattern Recognition · Computer Science 2025-08-12 Fangmin Zhao , Weichao Zeng , Zhenhang Li , Dongbao Yang , Yu Zhou

Removing various degradations from damaged documents greatly benefits digitization, downstream document analysis, and readability. Previous methods often treat each restoration task independently with dedicated models, leading to a…

Computer Vision and Pattern Recognition · Computer Science 2025-08-07 Fangmin Zhao , Weichao Zeng , Zhenhang Li , Dongbao Yang , Binbin Li , Xiaojun Bi , Yu Zhou

Super-resolution reconstruction is aimed at generating images of high spatial resolution from low-resolution observations. State-of-the-art super-resolution techniques underpinned with deep learning allow for obtaining results of…

Computer Vision and Pattern Recognition · Computer Science 2025-03-19 Maciej Zyrek , Michal Kawulok
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