Abstract
Line drawing style Ascii-art is one of the method to express images with shape of characters. The Ascii-arts are conventionaly made by manualy, but then those made by automaticaly, too. In this study, we thought that one to many relationship of exchange line-art and character can make redundancy to Ascii-arts. This report presents an auto-making method of line drawing style Ascii-arts that based on our idea. From experimental results, we revealed that matching parameter of pattern-matching can control quality of Ascii-arts and information hiding capacity. And we found availability and disability of bilateral filter for clean abstraction of outline with natural image.