Corrigendum to "Real-time line detection through an improved hough transform voting scheme" [Pattern Recognition 41 (1) 299-314]

Clarification A vertical line in the original imagewould cause a division by zero operation that is not dealtwithin Algorithm2, line 20 ( / m′ =xu/ √ 1− x2 v in Eq. (14)). In such a case, however, the / m′ is zero, and 2 and (Eq. (13)) are also equal to zero. Thus, in practice, division by zero never actually happens. Acknowledgments: The authors would like to thank Ian (from University of Waterloo) for asking this.