Title
A Wavelet Approach to Extracting Contours of Document Images
Abstract
In this paper, a new method for extracting contours of document images is proposed. It is a wavelet-based method that consists of three steps. First, by orthogonal wavelet decomposition, a document image is decomposed into a set of wavelet approximation and wavelet details. Next, contour extraction is achieved by applying a wavelet reconstruction technique. In the third step, a multi-resolution-contours extraction with respect to an iteration wavelet reconstruction is implemented. A novel combination of multi-resolution-contours results in clear contours of the document image.This reconstruction procedure is accompanied by an energy distribution estimation from which wavelet decomposition times can be adaptively controlled. Our method has no redundant operation compared to the scheme of wavelet transform. Therefore, the computational time and memory requirement are less than those by wavelet transform.
Year
DOI
Venue
1999
10.1109/ICDAR.1999.791727
ICDAR-1
Keywords
DocType
ISBN
extracting contours,document images,wavelet reconstruction technique,iteration wavelet reconstruction,wavelet-based method,wavelet detail,reconstruction procedure,new method,orthogonal wavelet decomposition,wavelet approach,contour extraction,wavelet approximation,document image,sun,wavelet analysis,wavelet transform,mathematics,wavelet transforms,image reconstruction,computer science,feature extraction,multiresolution analysis
Conference
0-7695-0318-7
Citations 
PageRank 
References 
6
0.75
5
Authors
3
Name
Order
Citations
PageRank
L. Feng160.75
Y. Y. Tang2416165.12
L. H. Yang360.75