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Detecting Oriented Text in Natural Images by Linking Segments

2017-03-19CVPR 2017Code Available0· sign in to hype

Baoguang Shi, Xiang Bai, Serge Belongie

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Abstract

Most state-of-the-art text detection methods are specific to horizontal Latin text and are not fast enough for real-time applications. We introduce Segment Linking (SegLink), an oriented text detection method. The main idea is to decompose text into two locally detectable elements, namely segments and links. A segment is an oriented box covering a part of a word or text line; A link connects two adjacent segments, indicating that they belong to the same word or text line. Both elements are detected densely at multiple scales by an end-to-end trained, fully-convolutional neural network. Final detections are produced by combining segments connected by links. Compared with previous methods, SegLink improves along the dimensions of accuracy, speed, and ease of training. It achieves an f-measure of 75.0% on the standard ICDAR 2015 Incidental (Challenge 4) benchmark, outperforming the previous best by a large margin. It runs at over 20 FPS on 512x512 images. Moreover, without modification, SegLink is able to detect long lines of non-Latin text, such as Chinese.

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Benchmark Results

DatasetModelMetricClaimedVerifiedStatus
ICDAR 2013SegLinkF-Measure85.3Unverified
ICDAR 2015WordSup (VGG16-synth-icdar)F-Measure78.2Unverified
MSRA-TD500SegLinkF-Measure77Unverified

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