Usage of continuous skeletal image representation for document images de-warping
A.A. Masalovitch, Leonid Moiseevich Mestetskiy · 2007
In this paper application of continuous skeletal image representation to documents’ image de-warping is described. A novel technique is presented that allows to approximate deformation of interlinear spaces of image based on elements of image’s skeleton that lie between the text lines. A method for approximation of whole image deformation as combination of single interlinear spaces deformations is proposed and representation of it in the form of 2dimensional cubic Bezier patch is suggested. Experimental results for batch of deformed document images are given that compare recognition quality of images before and after de-warping process. These results prove efficiency of the proposed algorithm.