2026-04-17T13:06:39Z https://ipsj.ixsq.nii.ac.jp/oai

oai:ipsj.ixsq.nii.ac.jp:00213237 2025-01-19T17:13:47Z 1164:5159:10515:10722

凸線図とパズルピース状における図形の識別しやすさの比較―都府県の形を刺激とし，晴眼者を参加者とした場合― Comparison of Shape Discriminability between Raised-Line Drawings and Puzzle Pieces―Shapes of Prefectures as Stimuli and the Sighted as Participants― 渡辺, 哲也 小野, 弘陛 江澤, 悠太 Tetsuya, Watanabe Kohei, Ono Yuta, Ezawa WIT 3 視覚障害のある児童生徒の地理の学習において凸線図の地図が用いられている．私たちは 3D プリンタを用い，これで作成したパズルピース状の地方自治体の地図を触ってもらったところ，凸線図より分かりやすいという意見を得た．これを検証するため，凸線図とパズルピース状で作成した都府県の形を晴眼の実験参加者に触察してもらい，識別の正答率と回答時間を計測した．どちらの条件でも平均正答率は 90% 以上と高かったが，凸線図の回答時間の平均値はパズルピース状の約 3 倍と長くなった．また，参加者間の違いも大きかった．識別の根拠とした形状の特徴として，大きさ，全体的な形状のほかに，突起の有無・位置・形状が大部分の参加者から挙げられた．これらの特徴は両条件で一致していた．特徴を捉えるのに凸線図では凸線をなぞるのに対して，ピース状ではつまむことができ，この触察動作の違いが回答時間の違いの原因となっていた．今回の実験結果は，視覚障害教育における教材としてパズルピース状の地図の有効性を示すものとなる． In education for the blind, tactile maps with raised lines have been used. We introduced district maps made of puzzle pieces to blind students and adults and received comments on the advantage of puzzle pieces over raised-line drawings in comprehending the shapes of the districts. To investigate this phenomenon, we conducted an experiment in which shapes of prefectures of Japan were presented to the sighted subjects in two conditions: raised-line drawing and puzzle piece. Under both conditions, the prefectures were discriminated at high correct rates (over 90%). However, the mean response time for raised-line drawings was three times as long as that for puzzle pieces. In addition, the response times for raised-line drawings varied greatly among the participants. The features of the shapes that were used as basis of discrimination by most participants were the existence, locations, and shapes of the projections along with sizes and outlines of the shapes. These features were common in both conditions. To conceive these features, the participants traced along the raised lines with fingers for the raised-line drawings, whereas they could pinch the projections for puzzle pieces. This difference in haptic exploration produced the difference in response time. The results of the present experiment suggests the effectiveness of map puzzle pieces as educational materials in the education for the blind. 情報処理学会 2021-10-12 jpn technical report https://ipsj.ixsq.nii.ac.jp/records/213237 2188-8663 AN10442647 研究報告音声言語情報処理（SLP） 2021-SLP-138 1 6 https://ipsj.ixsq.nii.ac.jp/record/213237/files/IPSJ-SLP21138009.pdf application/pdf 2.1 MB