An Application of Numbers and Characters Recognition on Radar Images

  • Prattana Deeprasertkul Hydro and Agro Informatics Institute, 108 Bangkok Thai Tower, 8th Floor, RangNam Road, Phayathai, Ratchatewi, Bangkok
Keywords: OCR template, Tesseract OCR, Fast Normalized Cross-Correlation, Radar image

Abstract

From the project of the date and time reading in the Radar images, the OCR templates technique was applied because some Radar images do not have date and time information in their properties. The method had the problems that the Radar images could not be retrieved when the month names are changed and then the new month name templates had to be created. Therefore, this work has applied Tesseract OCR library to help read the date and time images and used Fast Normalized Cross-Correlation theory to enhance the performance of the template matching and to retrieve more Radar images. The accuracy of results in this program using Fast Normalized Cross-Correlation with OCR templates was 86 percent.

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References

Prattana, D. and Worawit, P. “An Application of Numbers and Characters Recognition and Classification on Radar Images Using for Flood Monitoring”, The 3rd International Conference on Computer and Communication Systems (ICCCS 2018), Nagoya Institute of Technology, Nagoya, Japan, April 27-30, 2018.

Adhvaryu, R. V. “Optical Character Recognition Using Template Matching (Alphabets & Numbers),” International Journal of Computer Science Engineering and Information Technology Research (IJCSEITR), vol. 3, Issue 4, Oct. 2013, pp.227-232.

Vaibhaw, S. C. “Deep Learning based Text Recognition (OCR) using Tesseract and OpenCV”, https://www.learnopencv.com/deep-learning-based-text-recognition-ocr-using-tesseract-and-opencv/, June 6, 2018.

Hii, A.J.H. & E. Hann, Christopher & Chase, James & Van Houten, Elijah. “Fast normalized cross correlation for motion tracking using basis functions”, Computer Methods and Programs in Biomedicine, 82. 144-156, 10.1016/j.cmpb.2006.02.007.

J. P. Lewis, “Fast Normalized Cross-Correlation,” In: Vision Interface, 1995, pp. 120-123.

Published
2018-09-21
How to Cite
Deeprasertkul, P. (2018). An Application of Numbers and Characters Recognition on Radar Images. INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY, 17(2), 7297-7304. https://doi.org/10.24297/ijct.v17i2.7626