Mojtaba Mohammadpoor - Electrical and Computer Engineering Department, University of Gonabad, Gonabad, Iran,
Abbas Mehdizadeh - Department of Electrical and Computer Engineering, University of Gonabad, Gonabad
Hava Alizadeh Noghabi - Department of Computing, Nilai University, Negeri Sembilan

Handwritten digit recognition has got a special role in different applications in the field of digital recognition including; handwritten address detection, check, and document. Persian handwritten digits classification has been facing difficulties due to different handwritten styles, inter-class similarities, and intra-class differences.  In this paper, a novel method for detecting Persian handwritten digits is presented. In the proposed method, a combination of Histogram of Oriented Gradients (HOG), ۴-side profiles of the digit image, and some horizontal and vertical samples was used and the dimension of the feature vector was reduced using Principal Component Analysis (PCA). The proposed method applied to the HODA database, and Support Vector Machine (SVM) was used in the classification step. Results revealed that the detection accuracy of such method has ۹۹% accuracy with an adequate rate due to existing unacceptable samples in the database, therefore, the proposed method could improve the outcomes compared to other existing methods.

Histogram of oriented gradients (HOG), Principle component analysis (PCA), Support vector machine (SVM)