Multimedia ResearchISSN:2582-547X

Tamil Character Recognition Using K-Nearest-Neighbouring Classifier based on Grey Wolf Optimization Algorithm

Abstract

Optical character recognition (OCR) systems are well-knownand very effectivein the area of the majorityof trendy language recognitions in present data. Not like other languages, the recognition of the Tamil language is highly difficult and thereforesignificantendeavorshave been put in state-of-the-art. Nevertheless, in order to recognize the Tamil characters in an accurate manner, the techniques are not so far developed. Hence, this paper presents a new Tamil Handwritten Character recognition model using 2 important procedures such as recognition as well as pre-processing. The conversion of RGB to grayscale is performed by the pre-processing stage, morphological operations image complementation, binarization with thresholding, as well as linearization. Subsequent to the linearization, the pre-processed image is fed to the recognition through an optimally configured K-Nearest Neighbour. Moreover, the Grey Wolf Optimization (GWO) algorithm is exploited to fine-tune the weights. The developed model performance is evaluated over the conventional techniques regarding various metrics.

References

  • B. R. KavithaC. Srimathi,"Benchmarking on offline Handwritten Tamil Character Recognition using convolutional neural networks",Journal of King Saud University - Computer and Information SciencesAvailable online 15 June 2019.
  • Suganya AthisayamaniA. Robert SinghT. Athithan," Recognition of Ancient Tamil Palm Leaf Vowel Characters in Historical Documents using B-spline Curve Recognition", Procedia Computer Science4 June 2020.
  • Ritesh SarkhelNibaran DasMita Nasipuri,"A multi-scale deep quad tree based feature extraction method for the recognition of isolated handwritten characters of popular indic scripts", Pattern Recognition, 26 May 2017.
  • K. ManjushaM. Anand KumarK. P. Soman,"On developing handwritten character image database for Malayalam language script Engineering Science and Technology", an International Journal5 February 2019.
  • Ayan Kumar BhuniaSubham MukherjeeUmapada Pal,"Indic handwritten script identification using offlineonline multi-modal deep network", Information Fusion, 30 October 2019.
  • [35] Pushpajit Khaire, Praveen Kumar, Javed Imran, “Combining CNN streams of RGB-D and skeletal data for human activity recognition”, Pattern Recognition Letters, vol. 115, pp. 107-116, 1 November 2018.
  • Xiaolin Li, Peng Wang, Xin-Jian Xu, Gaoxi Xiao, “Universal behavior of the linear threshold model on weighted networks”, Journal of Parallel and Distributed Computing, vol. 123, pp. 223-229, January 2019.
  • Thomas H. Sharp, Frank G. A. Faas, Abraham J. Koster, Piet Gros, “Imaging complement by phase-plate cryoelectron tomography from initiation to pore formation”, Journal of Structural Biology, vol. 197, no. 2, pp. 155-162, February 2017.
  • Cao Yuan, Yaqin Li, “Switching median and morphological filter for impulse noise removal from digital images”, Optik, volume. 126, number. 18, page no. 1598-1601, September 2015.
  • Bency Jacob and Mr. S.B. Waykar,"Binarization and recognition of characters from historical degraded documents",Recent Advances in Computer Science.
  • Mashaan AlshammariJohn StavrakakisMasahiro Takatsuka,"Refining a k-nearest neighbor graph for a computationally efficient spectral clustering",Pattern Recognition6 February 2021.
  • Jun DengWei-Le ChenChi-Min Shu,"Correction model for CO detection in the coal combustion loss process in mines based on GWO-SVM",Journal of Loss Prevention in the Process Industries3 March 2021. Avinash Gopal," Hybrid classifier: Brain Tumor Classification and Segmentation using Genetic-based Grey Wolf optimization", Multimedia Research, vol 3, no 2, April 2020.
  • Fatima-ezzahra Lagrari," Image Steganography for Pixel Prediction using K-nearest Neighbor", Multimedia Research, vol 3, no 2, April 2020.