DETECTING LICENSE PLATE USING CLUSTER RUN LENGTH SMOOTHING ALGORITHM

Siti Norul Huda Sheikh Abdullah, Marzuki Khalid, Rubiyah Yusof, Khairuddin Omar

Abstract

Vehicle license plate recognition has been intensively studied in many countries. Due to the different types of license plates being used, the requirement of an automatic license plate recognition system is different for each country. In this paper, an automatic license plate recognition system is proposed for Malaysian vehicles with standard license plates based on image processing, clustering, feature extraction and neural networks. The image processing library is developed in-house which referred to as Vision System Development Platform (VSDP).After applying image enhancement, the image is segmented using blob analysis, horizontal scan line profiles, clustering and run length smoothing algorithm approach to identify the location of the license plate. Thoroughly each image is transformed into blob objects and its important information such as total of blobs, location, height and width, are being analyzed for the purpose of cluster exercising and choosing the best cluster with winner blobs. Here, new algorithm called Cluster Run Length Smoothing Algorithm (CLSA) approach was applied to locate the license plate at the right position. CLSA consisted of two separate new proposed algorithm which applied new edge detector algorithm using 3x3 kernel masks and 128 grayscale offset plus a new way (3D method) to calculate run length smoothing algorithm (RLSA), which can improve clustering techniques in segmentation phase. Two separate experiments were performed; Cluster and Threshold value 130 (CT130) and CRLSA with Threshold value 1 (CCT1). The prototyped system has an accuracy more than 96% and suggestions to further improve te system are discussed in this paper pertaining to analysis of the error.

References

  1. Al-Badr, B. and S.A.Mahmoud (1995). Survey and bibliography of arabic optical test recognition. Signal Processing., 41:49-77.
  2. Chang, S.-L., shien Chen, L., Chung, Y.-C., and Chen, S.- W. (2004). Automatic license plate recognition. IEEE Transaction Intelligent transportation system, 5:42- 53.
  3. Fisher, J. L., Hinds, S. C., and DAmato, D. P. (1990). A rule-based system for document image segmentation. In Proceedings of 10th International Conference on Pattern Recognition, volume 1, pages 567-572. irrelevent.
  4. J.Barosso, Dagless, E., A.Rafel, and Bulas-Cruz, J. (1997). Number plate reading using computer vision. In Proceedings of IEEE International symposium on Industrial Electronics., volume 3, pages 761-766.
  5. Nagy, G. (1968). Preliminary investigation of techniques for automated reading of unformatted text. Communication ACM, 11:480-487.
  6. Wong, K., Casey, R., and Wahl, F. (1982). Document analysis system. IBM Journal of Research and Development, 26(6):647-657. rule based for text, horizontal solid nlack lines, graphic and halftone images, vertical solid black lines.
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Paper Citation


in Harvard Style

Norul Huda Sheikh Abdullah S., Khalid M., Yusof R. and Omar K. (2006). DETECTING LICENSE PLATE USING CLUSTER RUN LENGTH SMOOTHING ALGORITHM . In Proceedings of the Third International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO, ISBN 978-972-8865-59-7, pages 175-178. DOI: 10.5220/0001198501750178


in Bibtex Style

@conference{icinco06,
author={Siti Norul Huda Sheikh Abdullah and Marzuki Khalid and Rubiyah Yusof and Khairuddin Omar},
title={DETECTING LICENSE PLATE USING CLUSTER RUN LENGTH SMOOTHING ALGORITHM},
booktitle={Proceedings of the Third International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO,},
year={2006},
pages={175-178},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001198501750178},
isbn={978-972-8865-59-7},
}


in EndNote Style

TY - CONF
JO - Proceedings of the Third International Conference on Informatics in Control, Automation and Robotics - Volume 1: ICINCO,
TI - DETECTING LICENSE PLATE USING CLUSTER RUN LENGTH SMOOTHING ALGORITHM
SN - 978-972-8865-59-7
AU - Norul Huda Sheikh Abdullah S.
AU - Khalid M.
AU - Yusof R.
AU - Omar K.
PY - 2006
SP - 175
EP - 178
DO - 10.5220/0001198501750178