Title:
CHARACTER DETECTION METHOD AND DEVICE, AND CHARACTER DETECTION TRAINING METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/054326
Kind Code:
A1
Abstract:
Disclosed are a character detection method and device, and a character detection training method and device. An exemplary character detection method comprises: extracting a feature map from an image comprising a character region by using a convolutional neural network; transversely clipping the feature map by using a plurality of anchors separately, to obtain a plurality of suggestion regions; classifying and regressing each suggestion region by means of the convolutional neural network, wherein whether each suggestion region corresponds to an region comprising characters is determined by means of the classification, and the position in the image corresponding to each suggestion region is determined by means of the regression; and transversely splicing, according to the positions in the image that respectively correspond to the suggestion regions and are determined by means of the regression, the suggestion regions that correspond to the regions comprising characters and are determined by means of the classification, to obtain a character region detection result.
Inventors:
XIANG DONGLAI (CN)
GUO QIANG (CN)
XIA YAN (CN)
LIANG DING (CN)
GUO QIANG (CN)
XIA YAN (CN)
LIANG DING (CN)
Application Number:
PCT/CN2017/102679
Publication Date:
March 29, 2018
Filing Date:
September 21, 2017
Export Citation:
Assignee:
BEIJING SENSETIME TECH DEVELOPMENT CO LTD (CN)
International Classes:
G06K9/34; G06K9/46; G06K9/62
Foreign References:
| CN105809164A | 2016-07-27 | |||
| CN105608454A | 2016-05-25 | |||
| CN105868758A | 2016-08-17 | |||
| CN106446899A | 2017-02-22 |
Other References:
SHAOQING REN ET AL.: "Faster R-CNN: Towards Real-Time Object Detection with Re- gion Proposal Networks", ARXIV:1506.01497V3, vol. 39, no. 6, 6 January 2016 (2016-01-06), pages 1137 - 1149, XP055583592, Retrieved from the Internet
ZHUOYAO ZHONG ET AL.: "DeepText: A Unified Framework for Text Proposal Generation and Text Detection in Natural Images", ARXIV: 1605. 07314VL [CS. CV, 24 May 2016 (2016-05-24), pages 1 - 12, XP080703156, Retrieved from the Internet
ZHUOYAO ZHONG ET AL.: "DeepText: A Unified Framework for Text Proposal Generation and Text Detection in Natural Images", ARXIV: 1605. 07314VL [CS. CV, 24 May 2016 (2016-05-24), pages 1 - 12, XP080703156, Retrieved from the Internet
Attorney, Agent or Firm:
BEIJING SIYUANZHIHUI INTELLECTUAL PROPERTY AGENCY (CN)
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