{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,5,6]],"date-time":"2022-05-06T17:10:51Z","timestamp":1651857051146},"reference-count":11,"publisher":"IGI Global","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2018,10,1]]},"abstract":"<p>This article describes how in order to facilitate the retrieval of impressive scenes from lifelog videos, a method to estimate the intensity of a facial expression of a person in a lifelog video is proposed. The previous work made it possible to estimate the facial expression intensity, but the previous method requires some training samples which should be manually and carefully selected. This makes the previous method quite inconvenient. This article attempts to solve this problem by introducing an unsupervised learning method. The proposed method estimates the facial expression intensity via a clustering on the basis of several facial features computed from the positional relationship of a number of facial feature points. For the evaluation of the proposed method, an experiment to estimate the facial expression intensity is performed using a lifelog video data set. The estimation performance of the proposed method is compared with that of the previous method.<\/p>","DOI":"10.4018\/ijsi.2018100103","type":"journal-article","created":{"date-parts":[[2018,7,30]],"date-time":"2018-07-30T14:28:07Z","timestamp":1532960887000},"page":"30-45","source":"Crossref","is-referenced-by-count":0,"title":["Unsupervised Estimation of Facial Expression Intensity for Emotional Scene Retrieval in Lifelog Videos"],"prefix":"10.4018","volume":"6","author":[{"given":"Shota","family":"Sakaue","sequence":"first","affiliation":[{"name":"Kyoto Institute of Technology, Kyoto, Japan"}]},{"given":"Hiroki","family":"Nomiya","sequence":"additional","affiliation":[{"name":"Graduate School of Information Science, Kyoto Institute of Technology, Kyoto, Japan"}]},{"given":"Teruhisa","family":"Hochin","sequence":"additional","affiliation":[{"name":"Graduate School of Information Science, Kyoto Institute of Technology, Kyoto, Japan"}]}],"member":"2432","reference":[{"key":"IJSI.2018100103-0","unstructured":"Aizawa, K. (2004). Information Processing of Experience - Acquisition and Processing of Life Log (Technical Research Report of the Institute of Electronics, Information and Communication Engineers, Pattern Recognition \/ Media Understanding). (in Japanese)."},{"key":"IJSI.2018100103-1","first-page":"15","article-title":"Capture and Efficient Retrieval of Life Log","author":"K.Aizawa","year":"2004","journal-title":"Proc. of Pervasive 2004 Workshop on Memory and Sharing Experiences"},{"key":"IJSI.2018100103-2","doi-asserted-by":"publisher","DOI":"10.1016\/0098-3004(84)90020-7"},{"key":"IJSI.2018100103-3","first-page":"235","article-title":"MyLifeBits: Fulfilling the Memex Vision.","author":"J.Gemmell","year":"2002","journal-title":"Proc. of the 10th ACM International Conference on Multimedia"},{"key":"IJSI.2018100103-4","unstructured":"Luxand Inc. Luxand FaceSDK 4.0. (2011). Retrieved from http:\/\/www.luxand.com\/facesdk\/"},{"issue":"1","key":"IJSI.2018100103-5","first-page":"32","article-title":"Expression Strength for the Emotional Scene Detection from Lifelog Videos.","volume":"16","author":"A.Morikuni","year":"2015","journal-title":"International Journal of Computer & Information Science"},{"key":"IJSI.2018100103-6","doi-asserted-by":"publisher","DOI":"10.4018\/ijsi.2013100101"},{"key":"IJSI.2018100103-7","first-page":"61","article-title":"Emotional Scene Retrieval from Lifelog Videos Using Evolutionary Feature Creation.","volume":"612","author":"H.Nomiya","year":"2015","journal-title":"Studies in Computational Intelligence"},{"key":"IJSI.2018100103-8","doi-asserted-by":"publisher","DOI":"10.4018\/IJSI.2015070101"},{"key":"IJSI.2018100103-9","first-page":"317","author":"M.Pantic","year":"2005","journal-title":"Web-based Database for Facial Expression Analysis"},{"key":"IJSI.2018100103-10","first-page":"121","article-title":"Estimation of Emotional Scene from Lifelog Videos in Consideration of Intensity of Various Facial Expressions.","volume":"721","author":"S.Sakaue","year":"2017","journal-title":"Studies in Computational Intelligence"}],"container-title":["International Journal of Software Innovation"],"original-title":[],"language":"ng","link":[{"URL":"https:\/\/www.igi-global.com\/viewtitle.aspx?TitleId=210453","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,5,6]],"date-time":"2022-05-06T16:37:38Z","timestamp":1651855058000},"score":1,"resource":{"primary":{"URL":"https:\/\/services.igi-global.com\/resolvedoi\/resolve.aspx?doi=10.4018\/IJSI.2018100103"}},"subtitle":[""],"short-title":[],"issued":{"date-parts":[[2018,10,1]]},"references-count":11,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2018,10]]}},"URL":"https:\/\/doi.org\/10.4018\/ijsi.2018100103","relation":{},"ISSN":["2166-7160","2166-7179"],"issn-type":[{"value":"2166-7160","type":"print"},{"value":"2166-7179","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018,10,1]]}}}