Skip to main content

OCR of Printed Telugu Text with High Recognition Accuracies

  • Conference paper
Computer Vision, Graphics and Image Processing

Part of the book series: Lecture Notes in Computer Science ((LNIP,volume 4338))

Abstract

Telugu is one of the oldest and popular languages of India spoken by more than 66 million people especially in South India. Development of Optical Character Recognition systems for Telugu text is an area of current research.

OCR of Indian scripts is much more complicated than the OCR of Roman script because of the use of huge number of combinations of characters and modifiers. Basic Symbols are identified as the unit of recognition in Telugu script. Edge Histograms are used for a feature based recognition scheme for these basic symbols. During recognition, it is observed that, in many cases, the recognizer incorrectly outputs a very similar looking symbol. Special logic and algorithms are developed using simple structural features for improving recognition accuracies considerably without too much additional computational effort. It is shown that recognition accuracies of 98.5 % can be achieved on laser quality prints with such a procedure.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 84.99
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 109.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Nagy, G.: Twenty years of Document Image Analysis in PAMI. IEEE Transactions on Pattern Analysis and Machine Intelligence 22(1), 38–63 (2000)

    Article  Google Scholar 

  2. Mori, S., Suen, C.Y., Yamamoto, K.: Historical review of OCR Research and Development. Proc. of the IEEE, 1029–1058 (1992)

    Google Scholar 

  3. Govindan, V.K., Shivaprasad, A.P.: Character recognition – A review. Pattern Recognition 23(7), 671–683 (1990)

    Article  Google Scholar 

  4. Bansal, V., Sinha, R.M.K.: A survey of OCR in Indian Languages and a Devanagari OCR scheme. In: Proceedings of the STRANS – 2001, IIT, Kanpur (2001)

    Google Scholar 

  5. Chaudhuri, B.B., Pal, U.: A complete printed Bangla OCR system. Pattern Recognition 31, 531–549 (1998)

    Article  Google Scholar 

  6. Nagabhushan, P., Radhika, A.: Improved region decomposition method for the recognition of non-uniform sized characters. In: Proceedings of the International Conference on Cognitive science, ICCS 1997, New Delhi, vol. 1, pp. 36–42 (1997)

    Google Scholar 

  7. Anna Durai, S., et al.: Tamil character recognition using multilayer neural network. In: Indian Conference on Pattern Recognition. Image Processing and Computer Vision (ICPIC), pp. 155–160 (1995)

    Google Scholar 

  8. Bishnu, A., Chaudhuri, B.: Segmentation of Bangla Handwritten text into characters by recursive contour following. In: Proceedings of the Fifth International Conference on Document Analysis and Recognition, ICDAR 1999, pp. 402–405 (1999)

    Google Scholar 

  9. Pal, U., Chaudhuri, B.: Script line separation from Indian Multi-Script Documents. In: Proceedings of the Fifth International Conference on Document Analysis and Recognition, ICDAR 1999, pp. 406–409 (1999)

    Google Scholar 

  10. Bansal, V., Sinha, R.: On how to describe shapes of Devanagari Characters and use them for Recognition. In: Proceedings of ICDAR 1999, pp. 410–413 (1999)

    Google Scholar 

  11. Anatani, S., Agnihotri, L.: Gujarati Character Recognition. In: Proceedings of ICDAR 1999, pp. 418–421 (1999)

    Google Scholar 

  12. Sundaresan, C., Keerthi, S.: A study of representation for Pen based Handwriting recognition of Tamil Characters. In: Proceedings of ICDAR 1999, pp. 422–425 (1999)

    Google Scholar 

  13. Sukhaswami, M.B., Seetharamulu, Pujari, A.K.: Recognition of Telugu characters using Neural Networks. Int. Journal of Neural Systems 6(3), 317–357 (1995)

    Article  Google Scholar 

  14. Negi, A., et al.: An OCR system for Telugu. In: Proceedings of International Conference on Document Analysis and Recognition, ICDAR – 2001, Seattle, USA (2001)

    Google Scholar 

  15. Vasantha Lakshmi, C., Patvardhan, C., Singh, R.: A novel basic symbol approach for Telugu OCR with neural networks. Journal of the Computer Society of India, 31–39 (March 2003)

    Google Scholar 

  16. Vasantha Lakshmi, C., Patvardhan, C.: Recognition of basic symbols in Telugu by Neural networks. In: STRANS-2002, IIT Kanpur, March 15–17 (2002)

    Google Scholar 

  17. Vasantha Lakshmi, C., Patvardhan, C.: An OCR system for Telugu text: A basic symbol approach. Int. Jl. on Pattern Analysis and Applications, 190–204 (July 2004)

    Google Scholar 

  18. Vasantha Lakshmi, C.: Ph.D. Thesis, Dayalbagh Educational Institute, Agra, India (unpublished, 2003)

    Google Scholar 

  19. Sonka, M., Hlavac, V., Boyle, R.: Image processing, Analysis, and Machine Vision, 2nd edn. Brooks/Cole Publishing Company (1998)

    Google Scholar 

  20. Srikanthan, G., Lam, S.W., Srihari, S.N.: Gradient based contour encoding for character recognition. Pattern Recognition 29(7), 1147–1160 (1996)

    Article  Google Scholar 

  21. LEAP, Indian language software, CDAC, Pune, India

    Google Scholar 

  22. Manjunath, B.S., Salembier, P., Sikora, T. (eds.): Introduction to MPEG-7. John Wiley & Sons, Chichester (2002)

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 2006 Springer-Verlag Berlin Heidelberg

About this paper

Cite this paper

Vasantha Lakshmi, C., Jain, R., Patvardhan, C. (2006). OCR of Printed Telugu Text with High Recognition Accuracies. In: Kalra, P.K., Peleg, S. (eds) Computer Vision, Graphics and Image Processing. Lecture Notes in Computer Science, vol 4338. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11949619_70

Download citation

  • DOI: https://doi.org/10.1007/11949619_70

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-68301-8

  • Online ISBN: 978-3-540-68302-5

  • eBook Packages: Computer ScienceComputer Science (R0)

Publish with us

Policies and ethics