1Mao S, Rosenfeld A, Kanungo T. Document structure analysis algorithms: a literature survey. SPIE Elec- tronic Imaging, 2003, 5010(1): 197-207.
2Nagy G. Twenty years of document image analysis in PAMI. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2000, 22(1): 38-62.
3Namboodiri A M, Jain A K. Document structure and layout analysis // Digital Document Processing. London, 2007:29-48.
4Hardy M R B, Brailsford D F. Mapping and displaying structural transformations between XML and PDF // Proc The 2002 ACM Sympo Sium on Document Engineering. New York: ACM Press, 2002: 95-102.
5Hardy M R B, Brailsford D F, Thomas P L. Creating structured PDF files using XML templates//Proc The 2004 ACM Symposium on Document Engineering. New York: ACM Press, 2004:99-108.
