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This paper considers arbitrary document detection performed on a mobile device. The classical contour-based approach often fails in cases featuring occlusion, complex background, or blur. The region-based approach, which relies on the…

Computer Vision and Pattern Recognition · Computer Science 2021-07-02 Daniil V. Tropin , Sergey A. Ilyuhin , Dmitry P. Nikolaev , Vladimir V. Arlazarov

Reading text in the wild is a very challenging task due to the diversity of text instances and the complexity of natural scenes. Recently, the community has paid increasing attention to the problem of recognizing text instances with…

Computer Vision and Pattern Recognition · Computer Science 2019-08-07 MingKun Yang , Yushuo Guan , Minghui Liao , Xin He , Kaigui Bian , Song Bai , Cong Yao , Xiang Bai

The challenges of shape robust text detection lie in two aspects: 1) most existing quadrangular bounding box based detectors are difficult to locate texts with arbitrary shapes, which are hard to be enclosed perfectly in a rectangle; 2)…

Computer Vision and Pattern Recognition · Computer Science 2018-06-08 Xiang Li , Wenhai Wang , Wenbo Hou , Ruo-Ze Liu , Tong Lu , Jian Yang

Previous approaches for scene text detection have already achieved promising performances across various benchmarks. However, they usually fall short when dealing with challenging scenarios, even when equipped with deep neural network…

Computer Vision and Pattern Recognition · Computer Science 2017-07-11 Xinyu Zhou , Cong Yao , He Wen , Yuzhi Wang , Shuchang Zhou , Weiran He , Jiajun Liang

The large side aperture of the NuSTAR telescope for unfocused photons (so-called stray light) is a known source of rich astrophysical information. To support many studies based on the NuSTAR stray light data, we present a fully automatic…

Instrumentation and Methods for Astrophysics · Physics 2023-10-30 Andrey Mukhin , Roman Krivonos , Alexey Vikhlinin , Brian Grefenstette , Kristin Madsen , Daniel Wik

Arbitrary-shaped text detection has recently attracted increasing interests and witnessed rapid development with the popularity of deep learning algorithms. Nevertheless, existing approaches often obtain inaccurate detection results, mainly…

Computer Vision and Pattern Recognition · Computer Science 2021-07-14 Tao Sheng , Zhouhui Lian

Medical image segmentation is a critical task that plays a vital role in diagnosis, treatment planning, and disease monitoring. Accurate segmentation of anatomical structures and abnormalities from medical images can aid in the early…

Computer Vision and Pattern Recognition · Computer Science 2023-09-14 Reza Azad , Amirhossein Kazerouni , Alaa Sulaiman , Afshin Bozorgpour , Ehsan Khodapanah Aghdam , Abin Jose , Dorit Merhof

Visual grounding is a task to locate the target indicated by a natural language expression. Existing methods extend the generic object detection framework to this problem. They base the visual grounding on the features from pre-generated…

Computer Vision and Pattern Recognition · Computer Science 2022-06-09 Li Yang , Yan Xu , Chunfeng Yuan , Wei Liu , Bing Li , Weiming Hu

Scene text detection has been made great progress in recent years. The detection manners are evolving from axis-aligned rectangle to rotated rectangle and further to quadrangle. However, current datasets contain very little curve text,…

Computer Vision and Pattern Recognition · Computer Science 2017-12-07 Liu Yuliang , Jin Lianwen , Zhang Shuaitao , Zhang Sheng

In this paper, we bring forth a novel approach of video text detection using Fourier-Laplacian filtering in the frequency domain that includes a verification technique using Hidden Markov Model (HMM). The proposed approach deals with the…

Computer Vision and Pattern Recognition · Computer Science 2017-10-05 Aneeshan Sain , Ayan Kumar Bhunia , Partha Pratim Roy , Umapada Pal

Recent video text spotting methods usually require the three-staged pipeline, i.e., detecting text in individual images, recognizing localized text, tracking text streams with post-processing to generate final results. These methods…

Computer Vision and Pattern Recognition · Computer Science 2022-08-23 Weijia Wu , Yuanqiang Cai , Chunhua Shen , Debing Zhang , Ying Fu , Hong Zhou , Ping Luo

Change detection in remote sensing imagery plays a vital role in various engineering applications, such as natural disaster monitoring, urban expansion tracking, and infrastructure management. Despite the remarkable progress of deep…

Computer Vision and Pattern Recognition · Computer Science 2025-08-08 Xiaoyang Zhang , Guodong Fan , Guang-Yong Chen , Zhen Hua , Jinjiang Li , Min Gan , C. L. Philip Chen

A framework that makes use of Connected components and supervised Support machine to recognise texts is proposed. The image is preprocessed and and edge graph is calculated using a probabilistic framework to compensate for photometric…

Computer Vision and Pattern Recognition · Computer Science 2014-11-04 Gowtham Rangarajan Raman

We present a method for exploiting weakly annotated images to improve text extraction pipelines. The approach uses an arbitrary end-to-end text recognition system to obtain text region proposals and their, possibly erroneous,…

Computer Vision and Pattern Recognition · Computer Science 2020-07-20 Klára Janoušková , Jiri Matas , Lluis Gomez , Dimosthenis Karatzas

Scene text in the wild is commonly presented with high variant characteristics. Using quadrilateral bounding box to localize the text instance is nearly indispensable for detection methods. However, recent researches reveal that introducing…

Computer Vision and Pattern Recognition · Computer Science 2019-07-30 Yuliang Liu , Sheng Zhang , Lianwen Jin , Lele Xie , Yaqiang Wu , Zhepeng Wang

Due to the diversity of scene text in aspects such as font, color, shape, and size, accurately and efficiently detecting text is still a formidable challenge. Among the various detection approaches, segmentation-based approaches have…

Computer Vision and Pattern Recognition · Computer Science 2024-09-26 Xu Han , Junyu Gao , Chuang Yang , Yuan Yuan , Qi Wang

A large number of annotated training images is crucial for training successful scene text recognition models. However, collecting sufficient datasets can be a labor-intensive and costly process, particularly for low-resource languages. To…

Computer Vision and Pattern Recognition · Computer Science 2023-06-28 Yangchen Xie , Xinyuan Chen , Hongjian Zhan , Palaiahankote Shivakum , Bing Yin , Cong Liu , Yue Lu

Detecting text located on the torsos of marathon runners and sports players in video is a challenging issue due to poor quality and adverse effects caused by flexible/colorful clothing, and different structures of human bodies or actions.…

Computer Vision and Pattern Recognition · Computer Science 2020-05-27 Sauradip Nag , Palaiahnakote Shivakumara , Umapada Pal , Tong Lu , Michael Blumenstein

Small object detection under complex backgrounds remains a challenging task due to severe feature degradation, weak semantic representation, and inaccurate localization caused by downsampling operations and background interference. Existing…

Computer Vision and Pattern Recognition · Computer Science 2026-03-05 Wenguang Tao , Xiaotian Wang , Tian Yan , Yi Wang , Jie Yan

Text spotting is an interesting research problem as text may appear at any random place and may occur in various forms. Moreover, ability to detect text opens the horizons for improving many advanced computer vision problems. In this paper,…

Computer Vision and Pattern Recognition · Computer Science 2017-12-14 Aarushi Agrawal , Prerana Mukherjee , Siddharth Srivastava , Brejesh Lall