Using mathematical morphology for document skew estimation
Laurent Najman · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2003
We propose a concise definition of the skew angle of document, based on mathematical morphology. This definition has the advantages to be applicable both for binary and grey-scale images. We then discuss various possible implementations of this definition, and show that results we obtain are comparable to those of other existing algorithms.