Abstract
Preprocessing, a major component of Character Recognition System, has direct effect on the recognition system by its performance. A preprocessing method for NaXi Pictograph Character Recognition has been developed based on the characteristics of NaXi Pictograph in glyph and way of writing. The whole procedure of preprocessing constitutes of binary processing, skew correction, document layout analysis, Character Segmentation and Normalization processing, Edge Detection, as well as the extraction of directional line element feature, Wide-gridding feature, permeability number feature, Moment Invariant Feature, to name a few. These features can be used in Coarse Classification, fine classification, and Post-processing of the system, since their good stability and fully reflection of the characteristics of NaXi Pictograph.
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