Isan Dhamma Characters Segmentation and Reading in Thai

  • Siriya PhattarachairaweeEmail author
  • Montean Rattanasiriwongwut
  • Mahasak Ketcham
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 807)


This paper presents Isan Dhamma Characters Segmentation and Reading in Thai, Palm leaf manuscript is considered as a kind of cultural heritage and the record of local wisdom of ancestors that should be transformed into digital format for educational and research benefits of the next generation. This research presents palm leaf manuscript’s Isan Dhamma characters segmentation and reading conducted by using image processing. The objective of this research is to utilize the obtained data in sentence recognition process further. The input was digital photos of a palm leaf manuscript written with Isan Dhamma characters that was proposed to be adjusted on its quality by adjusting light intensity through histogram. Subsequently, its quality was improved by using median filter in order to screen data on enhancement or attenuation of some picture’s properties in order to gain quality as demanded. Subsequently, characters were segmented from background (segmentation) by using Global Thresholding. In the last process, each character was recognized by using the principles of neural network and compared with support vector machine. After conducting the experiment with 10 images of palm leaf manuscript, it was found that neural network gives better effects than support vector machine by 98%.


K-NN Threshold Morphology CM calculation 


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Siriya Phattarachairawee
    • 1
    Email author
  • Montean Rattanasiriwongwut
    • 1
  • Mahasak Ketcham
    • 1
  1. 1.Faculty of Information TechnologyKing Mongkut’s University of Technology North BangkokBangkokThailand

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