Title
Document skew estimation without angle range restriction
Abstract
The existing skew estimation techniques usually assume that the input image is of high resolu- tion and that the detectable angle range is limited. We present a more generic solution for this task that over- comes these restrictions. Our method is based on deter- mination of the rst eigenvector of the data covariance matrix. The solution comprises image resolution reduc- tion, connected component analysis, component classi- cation using a fuzzy approach, and skew estimation. Experiments on a large set of various document images and performance comparison with two Hough transform- based methods show a good accuracy and robustness for our method.
Year
DOI
Venue
1999
10.1007/s100320050043
IJDAR
Keywords
Field
DocType
image resolution,eigenvectors,hough transform,covariance matrix,image processing,connected component
Pattern recognition,Computer science,Fuzzy logic,Hough transform,Image processing,Robustness (computer science),Artificial intelligence,Covariance matrix,Connected-component labeling,Image resolution,Eigenvalues and eigenvectors
Journal
Volume
Issue
Citations 
2
2-3
14
PageRank 
References 
Authors
1.22
29
3
Name
Order
Citations
PageRank
Oleg Okun130828.56
Matti Pietikäinen214779739.80
Jaakko J. Sauvola345144.31