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Extracting information from unstructured text documents is a demanding task, since these documents can have a broad variety of different layouts and a non-trivial reading order, like it is the case for multi-column documents or nested…

Artificial Intelligence · Computer Science 2022-02-08 Matthias Engelbach , Dennis Klau , Jens Drawehn , Maximilien Kintz

Most of object detection algorithms can be categorized into two classes: two-stage detectors and one-stage detectors. Recently, many efforts have been devoted to one-stage detectors for the simple yet effective architecture. Different from…

Computer Vision and Pattern Recognition · Computer Science 2020-04-14 Qi Qian , Lei Chen , Hao Li , Rong Jin

Motion detection algorithms that can be applied to surveillance cameras such as CCTV (Closed Circuit Television) have been studied extensively. Motion detection algorithm is mostly based on background subtraction. One main issue in this…

Computer Vision and Pattern Recognition · Computer Science 2018-05-24 Sang-Ha Lee , Soon-Chul Kwon , Jin-Wook Shim , Jeong-Eun Lim , Jisang Yoo

Multimodal learning from document data has achieved great success lately as it allows to pre-train semantically meaningful features as a prior into a learnable downstream task. In this paper, we approach the document classification problem…

Computer Vision and Pattern Recognition · Computer Science 2023-05-12 Souhail Bakkali , Zuheng Ming , Mickael Coustaty , Marçal Rusiñol , Oriol Ramos Terrades

Weakly supervised object localization (WSOL) aims to localize the target object using only the image-level supervision. Recent methods encourage the model to activate feature maps over the entire object by dropping the most discriminative…

Computer Vision and Pattern Recognition · Computer Science 2020-09-28 Minsong Ki , Youngjung Uh , Wonyoung Lee , Hyeran Byun

In this paper, we first provide a new perspective to divide existing high performance object detection methods into direct and indirect regressions. Direct regression performs boundary regression by predicting the offsets from a given…

Computer Vision and Pattern Recognition · Computer Science 2017-03-27 Wenhao He , Xu-Yao Zhang , Fei Yin , Cheng-Lin Liu

We describe the development of a real-time smartphone app that allows the user to digitize paper receipts in a novel way by "waving" their phone over the receipts and letting the app automatically detect and rectify the receipts for…

Computer Vision and Pattern Recognition · Computer Science 2023-03-13 Edward Whittaker , Masashi Tanaka , Ikuo Kitagishi

Image-Text Retrieval (ITR) is challenging in bridging visual and lingual modalities. Contrastive learning has been adopted by most prior arts. Except for limited amount of negative image-text pairs, the capability of constrastive learning…

Computer Vision and Pattern Recognition · Computer Science 2026-03-27 Haoran Wang , Dongliang He , Wenhao Wu , Boyang Xia , Min Yang , Fu Li , Yunlong Yu , Zhong Ji , Errui Ding , Jingdong Wang

Object detection has advanced significantly in the closed-set setting, but real-world deployment remains limited by two challenges: poor generalization to unseen categories and insufficient robustness under adverse conditions. Prior…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Siheng Wang , Zhengdao Li , Yanshu Li , Canran Xiao , Haibo Zhan , Zhengtao Yao , Xuzhi Zhang , Jiale Kang , Linshan Li , Weiming Liu , Zhikang Dong , Jifeng Shen , Junhao Dong , Qiang Sun , Piotr Koniusz

In most modern object detection pipelines, the detection proposals are processed independently given the feature map. Therefore, they overlook the underlying relationships between objects and the surrounding background, which could have…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Botao Ren , Botian Xu , Xue Yang , Yifan Pu , Jingyi Wang , Zhidong Deng

While road obstacle detection techniques have become increasingly effective, they typically ignore the fact that, in practice, the apparent size of the obstacles decreases as their distance to the vehicle increases. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2023-06-21 Krzysztof Lis , Sina Honari , Pascal Fua , Mathieu Salzmann

Scene change detection is an image processing problem related to partitioning pixels of a digital image into foreground and background regions. Mostly, visual knowledge-based computer intelligent systems, like traffic monitoring, video…

Computer Vision and Pattern Recognition · Computer Science 2022-12-21 Daniel F. S. Santos , Rafael G. Pires , Danilo Colombo , João P. Papa

In this paper, we propose an efficient and discriminative model for salient object detection. Our method is carried out in a stepwise mechanism based on both divergence background and compact foreground cues. In order to effectively enhance…

Computer Vision and Pattern Recognition · Computer Science 2017-12-01 Chenxing Xia , Hanling Zhang , Keqin Li

The advancement of image editing tools has enabled malicious manipulation of sensitive document images, underscoring the need for robust document image forgery detection.Though forgery detectors for natural images have been extensively…

Computer Vision and Pattern Recognition · Computer Science 2025-07-23 Kahim Wong , Jicheng Zhou , Haiwei Wu , Yain-Whar Si , Jiantao Zhou

We investigate semi-structured document classification in a zero-shot setting. Classification of semi-structured documents is more challenging than that of standard unstructured documents, as positional, layout, and style information play a…

Computation and Language · Computer Science 2022-10-12 Muhammad Khalifa , Yogarshi Vyas , Shuai Wang , Graham Horwood , Sunil Mallya , Miguel Ballesteros

Localizing text instances in natural scenes is regarded as a fundamental challenge in computer vision. Nevertheless, owing to the extremely varied aspect ratios and scales of text instances in real scenes, most conventional text detectors…

Computer Vision and Pattern Recognition · Computer Science 2021-12-15 Jingyang Lin , Yingwei Pan , Rongfeng Lai , Xuehang Yang , Hongyang Chao , Ting Yao

The aim of this paper is to improve the accuracy of copy-move forgery detection (CMFD) in image forensics by proposing a novel scheme and the main contribution is evolving circular domains coverage (ECDC) algorithm. The proposed scheme…

Computer Vision and Pattern Recognition · Computer Science 2022-10-25 Shilin Lu , Xinghong Hu , Chengyou Wang , Lu Chen , Shulu Han , Yuejia Han

We present Domain Contrast (DC), a simple yet effective approach inspired by contrastive learning for training domain adaptive detectors. DC is deduced from the error bound minimization perspective of a transferred model, and is implemented…

Computer Vision and Pattern Recognition · Computer Science 2020-06-29 Feng Liu , Xiaoxong Zhang , Fang Wan , Xiangyang Ji , Qixiang Ye

Graph pattern mining methods can extract informative and useful patterns from large-scale graphs and capture underlying principles through the overwhelmed information. Contrast analysis serves as a keystone in various fields and has…

Social and Information Networks · Computer Science 2018-02-20 Jingbo Shang , Xiyao Shi , Meng Jiang , Liyuan Liu , Timothy Hanratty , Jiawei Han

Detecting camouflaged moving foreground objects has been known to be difficult due to the similarity between the foreground objects and the background. Conventional methods cannot distinguish the foreground from background due to the small…

Computer Vision and Pattern Recognition · Computer Science 2018-04-18 Shuai Li , Dinei Florencio , Wanqing Li , Yaqin Zhao , Chris Cook