@article{oai:nagoya.repo.nii.ac.jp:00021364, author = {宮代, こずゑ and 原田, 悦子 and 高橋, 知世 and 北神, 慎司 and 須藤, 智 and MIYASHIRO, KOZUE and HARADA, ETSUKO T. and TAKAHASHI, TOMOYO and KITAGAMI, SHINJI and SUTO, SATORU}, issue = {35}, journal = {電子情報通信学会技術研究報告. LOIS, ライフインテリジェンスとオフィス情報システム}, month = {May}, note = {問題点が浮き彫りになりつつあるパスワード認証に代わるものとして,近年,画像を用いた画像認証システムが提案されてきている.これは従来の本人認証システムと比較して要求される認知的負荷が低く,現代社会において要求される「人にやさしい本人認証」の可能性を持つものである.しかし,実用化に当たり,使用される画像種類による違いや,認証という反復テストの効果やダミー画像の反復呈示の影響に関して検討する必要がある.そこで本研究では,実験参加者が持参した自伝的記憶画(autobiographical picture ; AB画像)及び実験者が用意した画像の中から参加者が選んだ自己選択記憶画像(self-selected picture : SS画像)という2種類の画像を使用し,長期の再認実験を実施した.3週間毎に2回の再認を実施した結果,AB画像のほうがSS画像と比べ再認成績が高かったが,いずれも3週間の遅延にもかかわらず再認2回目の方が再認成績は向上しており,テスト効果が示唆された.加えて,以前に見たダミー画像を再使用することにより再認成績が低下することが示された., Because of the problems lately highlighted in password authentication, the picture-authentication system (using pictures of individuals for identification) has been suggested. This system requires low cognitive load compared with conventional person authentication systems and has potential for introducing the "the human-friendly authentication," required in the modem society. However, some issues that arise in constructing a safe and easy-to-use picture-authentication system are yet to be resolved. For example, effects of repetition on recognition tests, i. e., use of the same pictures repeatedly as dummies, and differences between autobiographical and non-personal pictures. Long-term recognition experiments were conducted using two types of pictures : autobiographical (AB, those brought by the participants) and self-selected (SS, those chosen from a given set of pictures by the participants). Results of two recognition tests (three or six-week delay from learning) showed that when AB was used, recognition performance was slightly higher and confidence rates were much better than when SS was used. In the second test, both AB and SS showed large improvements in performance. However, recognition performance decreased when the same dummies from previous tests were used compared to when the new dummies were used., 情報処理学会研究報告Vol.2012-GN-84 No.2, Vol.2012-SPT-3 No.2}, pages = {9--14}, title = {画像認証システムによる本人認証(2) : 画像の種類及び再認のテスト反復効果}, volume = {112}, year = {2012} }