Detecting text in floor maps using Histogram of Oriented Gradients

Hima Bindu Maguluri, Qiongjie Tian, Baoxin Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Automatic detection of text labels in maps is essential for applications requiring automatic map understanding. This task is challenging due to factors such as varying font size and style, slanted words/phrases, and interfering graphics that are similar to text. This paper presents an approach for text detection in indoor floor maps. We exploit the difference in spatial frequency of edge orientations between text and non-text regions through Histogram of Oriented Gradients (HOG) features, and design a gradient-filtered Support Vector Machine (SVM) classifier based on such features. Special care was taken in conditioning the data for proper training of the classifier. The proposed approach was evaluated on a data set that had been collected and manually labeled. Experimental results show that the proposed method attained improved performance, outperforming a couple of reference methods/systems.

Original languageEnglish (US)
Title of host publication2013 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2013 - Proceedings
Pages1932-1936
Number of pages5
DOIs
StatePublished - Oct 18 2013
Event2013 38th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2013 - Vancouver, BC, Canada
Duration: May 26 2013May 31 2013

Publication series

NameICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
ISSN (Print)1520-6149

Other

Other2013 38th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2013
CountryCanada
CityVancouver, BC
Period5/26/135/31/13

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Keywords

  • Histogram of Oriented Gradients
  • Support Vector Machine
  • Text Detection

ASJC Scopus subject areas

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering

Cite this

Maguluri, H. B., Tian, Q., & Li, B. (2013). Detecting text in floor maps using Histogram of Oriented Gradients. In 2013 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2013 - Proceedings (pp. 1932-1936). [6637990] (ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings). https://doi.org/10.1109/ICASSP.2013.6637990