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Title: Detection and rectification of arbitrary shaped scene texts by using text keypoints and links
Authors: Xue, Chuhui
Lu, Shijian
Hoi, Steven
Keywords: Engineering::Computer science and engineering
Issue Date: 2022
Source: Xue, C., Lu, S. & Hoi, S. (2022). Detection and rectification of arbitrary shaped scene texts by using text keypoints and links. Pattern Recognition, 124, 108494-.
Journal: Pattern Recognition 
Abstract: Detection and recognition of scene texts of arbitrary shapes remain a grand challenge due to the super-rich text shape variation in text line orientations, lengths, curvatures, etc. This paper presents a mask-guided multi-task network that detects and rectifies scene texts of arbitrary shapes reliably. Three types of keypoints are detected which specify the centre line and so the shape of text instances accurately. In addition, four types of keypoint links are detected of which the horizontal links associate the detected keypoints of each text instance and the vertical links predict a pair of landmark points (for each keypoint) along the upper and lower text boundary, respectively. Scene texts can be located and rectified by linking up the associated landmark points (giving localization polygon boxes) and transforming the polygon boxes via thin plate spline, respectively. Extensive experiments over several public datasets show that the use of text keypoints is tolerant to the variation in text orientations, lengths, and curvatures, and it achieves competitive scene text detection and rectification performance as compared with state-of-the-art methods.
ISSN: 0031-3203
DOI: 10.1016/j.patcog.2021.108494
Schools: School of Computer Science and Engineering 
Rights: © 2021 Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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