Region Analysis of Business Card Images Acquired in PDA Using DCT and Information Pixel Density 


Vol. 29,  No. 8, pp. 1159-1174, Aug.  2004


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  Abstract

In this paper we present an efficient algorithm for region analysis of business card images acquired in a PDA by using DCT and information pixel density the proposed method consists of three parts legion segmentation, information region classification, and text region classification in the region segmentation, an input business card image is partitioned into 8×8 blocks and the blocks are classified into information and background blocks using the normalized DCT energy in then low frequency bands The input image is then segmented into information and background regions by region labeling on the classified blocks In the information region classification, each information region is classified into picture region or text region by using a ration of the DCT energy of horizontal and vertical edge components to that in low frequency band and a density of information pixels, that are black pixels in its binarized region In the text region classification, each text region is classified into large character region or small character region by using the density of information pixels and an averaged horizontal and vertical run-lengths of information pixels Experimental results show that the proposed method yields good performance of region segmentation, information region classification, and text region classification for test image of several types of business cards acquired by a PDA under various surrounding conditions In addition, the error rates of the proposed region segmentation are about 22-101％ lower than those of the conventional region segmentation methods It is also shown that the error rates of the proposed information region classification is about 77％ lower than that of the conventional information region classification method .

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  Cite this article

[IEEE Style]

J. Kim, I. Jang, N. Kim, "Region Analysis of Business Card Images Acquired in PDA Using DCT and Information Pixel Density," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 8, pp. 1159-1174, 2004. DOI: .

[ACM Style]

Jong-Heun Kim, Ick-Hoon Jang, and Nam-Chul Kim. 2004. Region Analysis of Business Card Images Acquired in PDA Using DCT and Information Pixel Density. The Journal of Korean Institute of Communications and Information Sciences, 29, 8, (2004), 1159-1174. DOI: .

[KICS Style]

Jong-Heun Kim, Ick-Hoon Jang, Nam-Chul Kim, "Region Analysis of Business Card Images Acquired in PDA Using DCT and Information Pixel Density," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 8, pp. 1159-1174, 8. 2004.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880