Automatic Script Identification Based on Dual-Tree Complex Wavelet Transform
Pla Information · Shuju caiji yu chuli · 2008
The technology of automatic script identification of a document image has important applications in the field of document analysis.This paper proposes a script identification technique based on dual-tree complex wavelet transform.The transform provides approximate shift invariance and the good directional selectivity compared with the traditional real wavelet transform.The transform can extract more stable and directional texture feature from text images.Six languages(Chinese,English,Japanese,Korean,Russian,and Arabic) script samples are chosen with different formats and fonts to demonstrate the potential of the technology.Experimental results show that the method is more effective in script identification than the traditional method of real wavelet transform.