In this paper, Principal Component Analysis (PCA) is applied to the problem of Online Handwritten Character Recognition in the Tamil script. The input is a temporally ordered sequence of (x,y) pen coordinates corresponding to an isolated character obtained from a digitizer. The input is converted into a feature vector of constant dimensions following
smoothing and normalization. PCA is used to find the basis vectors of each class subspace and the orthogonal distance to the subspaces used for classification. Preclustering of the training data and modi_cation of distance measure are explored to overcome some common problems in the traditional subspace method. In empirical evaluation, these PCA-based classification schemes are found to compare favorably with nearest neighbour classification.
Added on September 23, 2014
Product Type : Research Paper
License Type : Freeware
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Author : Deepu V., Sriganesh M., Ramakrishnan A. G