Multiresolution analysis in extraction of reference lines from documents with gray level background

Yuan Y. Tang*, Hong Ma, Jiming Liu, Bing Fa Li, Dihua Xi

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

44 Citations (Scopus)


Based on wavelets, a new theoretical method has been developed to process multi-gray level documents. In this method, two-dimensional multiresolution analysis, wavelet decomposition algorithm, and compactly supported orthonormal wavelets are used to transform a document image into sub-images. According to these sub-images, the reference lines of a multi-gray level document can be extracted, and knowledge about the geometric structure of the document can be acquired. Particularly, this approach is more efficient to process form documents with gray level background. Experiments indicate that this new method can be applied to process documents with promising results.

Original languageEnglish
Pages (from-to)921-926
Number of pages6
JournalIEEE Transactions on Pattern Analysis and Machine Intelligence
Issue number8
Publication statusPublished - Aug 1997

Scopus Subject Areas

  • Software
  • Computer Vision and Pattern Recognition
  • Computational Theory and Mathematics
  • Artificial Intelligence
  • Applied Mathematics

User-Defined Keywords

  • Compactly supported orthonormal wavelets
  • Document analysis
  • Sub-image
  • Two-dimensional multiresolution analysis
  • Wavelet decomposition algorithm
  • Wavelets


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