S. Alirezaee, Amirkabir Univ. of Tech., & Iran Telecommunication Research Center, Tehran, Iran; University of Windsor, Canada
H. Aghaeinia, Amirkabir Univ. of Tech., & Iran Telecommunication Research Center, Tehran, Iran
K. Faez, Amirkabir Univ. of Tech., & Iran Telecommunication Research Center, Tehran, Iran
In this paper, a morphological based method for recognition of handwritten middle Persian characters is presented. After pre-processing and noise cancellation, Morphological erosion operator with many structure elements is applied. The structure elements are with variable length lines at directions 0, 45, 90, 135 degrees. A five element feature set has been defined so: (1) relative energy of eroded version with respect to the original image energy (REL_ENG), (2) displacement of the center of mass (CM_DIS), (3) minimum eigenvalue (EIG_MIN), (4) maximum eigenvalue (EIG_MAX) and (5) its direction (EIG-DIR). These features are used to design a feedforward neural network with one hidden layer. The best classification error is about 2.39% (97.61% recognition rate), and is achieved with 150 neurons for the hidden layer.
Citation:
S. Alirezaee, H. Aghaeinia, M. Ahmadi, K. Faez, "An Efficient Selected Feature Set for the Middle Age Persian Character Recognition," aipr, pp.246-250, 33rd Applied Imagery Pattern Recognition Workshop (AIPR'04), 2004