Onomatopoeia characters extraction from comic images using constrained Delaunay triangulation
Xiangping Liu, Kenji Shoji, Hiroshi Mori, Fubito Toyama · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2014
A method for extracting onomatopoeia characters from comic images was developed based on stroke width feature of characters, since they nearly have a constant stroke width in a number of cases. An image was segmented with a constrained Delaunay triangulation. Connected component grouping was performed based on the triangles generated by the constrained Delaunay triangulation. Stroke width calculation of the connected components was conducted based on the altitude of the triangles generated with the constrained Delaunay triangulation. The experimental results proved the effectiveness of the proposed method.