@inproceedings{weko_123218_1, author = "前田,直樹 and 秦,清治", title = "多色文書からの図形概念の抽出(1)", booktitle = "全国大会講演論文集", year = "1993", volume = "第46回", number = "人工知能及び認知科学", pages = "221--222", month = "mar" }