An overview of text line segmentation methodsdeveloped within different projects is
presented in Table 1. The achieved taxonomy consistsin six major categories. They are listed
as: projection-based, smearing, grouping, Hough-based, repulsive-attractive network and
stochastic methods. Most of these methods are able to face some image degradations and
writing irregularities specific to historical documents, as shown in the last column of Table 1.