Text extraction from colored book and journal covers. - Karin Sobottka; Heino Kronenberg; T. Perroud; Horst Bunke (Int. J. Document Anal. Recognit., 2000)

Text Extraction from Color Documents - Clustering Approaches in Three and Four Dimensions. - T. Perroud; Karin Sobottka; Horst Bunke; Lawrence O. Hall (ICDAR, 2001)