Number extraction in document images based on mathematical morphology

Xiangzhi Bai; Fugen Zhou; Ting Jin; Zhaoying Liu

doi:10.1117/12.866737

20 August 2010 Number extraction in document images based on mathematical morphology

Xiangzhi Bai, Fugen Zhou, Ting Jin, Zhaoying Liu

Proceedings Volume 7820, International Conference on Image Processing and Pattern Recognition in Industrial Engineering; 78201V (2010) https://doi.org/10.1117/12.866737
Event: International Conference on Image Processing and Pattern Recognition in Industrial Engineering, 2010, Xi'an, China

Abstract

Number extraction in document image is a crucial technique in document image analysis. To simply and efficiently extract the numbers, a mathematical morphology based algorithm is proposed in this paper. Firstly, the square regions containing numbers are labeled by morphological dilation operation using a designed structuring element. Secondly, the square regions are extracted by morphological erosion operation. Thirdly, the inner region of the square regions is extracted through morphological dilation operations. Finally, the numbers are extracted through comparing the extracted and original inner region of the square regions. Experimental results show that the proposed algorithm is efficient.

Citation Download Citation

Xiangzhi Bai, Fugen Zhou, Ting Jin, and Zhaoying Liu "Number extraction in document images based on mathematical morphology", Proc. SPIE 7820, International Conference on Image Processing and Pattern Recognition in Industrial Engineering, 78201V (20 August 2010); https://doi.org/10.1117/12.866737

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