Extraction of filled in strokes from cheque image using pseudo 2D wavelet with adjustable support
Dihua Xi, Mohamed S. Kamel · 2005
Automatic cheque image processing is an important task in document image processing. Although many methods have been developed, it is still a challenge to find effective methods for some of the tasks, one of these is how to extract the filled-in strokes from a given cheque image. The problem becomes more difficult when a cheque has a complicated background. Most current methods are only applicable to simple binary images. This paper presents a method for processing complicated grey images in two steps. Both the extraction of reference lines and filled-in strokes are included. Our method is based on the construction of a pseudo 2D wavelet with adjustable rectangular supports. The experimental result shows good performance in the present method, which is also effective for slightly skewed cheque image.