2024-03-29T00:32:38Zhttps://ipsj.ixsq.nii.ac.jp/ej/?action=repository_oaipmhoai:ipsj.ixsq.nii.ac.jp:001606792023-04-27T10:00:04Z01164:04061:08479:08693
Initial Investigation of Visual Marker Design for Activity Recognition using Near-infrared ImagesInitial Investigation of Visual Marker Design for Activity Recognition using Near-infrared Imagesenghttp://id.nii.ac.jp/1001/00160645/Technical Reporthttps://ipsj.ixsq.nii.ac.jp/ej/?action=repository_action_common_download&item_id=160679&item_no=1&attribute_id=1&file_no=1Copyright (c) 2016 by the Information Processing Society of JapanOsaka UniversityOsaka UniversityJoseph, KorpelaTakuya, MaekawaThis study investigates the design of reflective markers for use in activity recognition using low-exposure near-infrared (NIR) images. These reflective markers can be placed on everyday objects, e.g., kitchen knives, to recognize object-based activities, e.g., cutting vegetables. These visual markers must balance a need to keep the marker sizes small, to allow their placement on the everyday objects, while still being large enough for detection in the NIR images. The markers must also be identifiable when placed on curved surfaces, such as when wrapped around handles. Our investigation indicates that markers created using flexible retroreflective material with sizes as small as 7x7 mm can be attached to many surfaces and provide enough reflectivity to be detected in the NIR images used in this study.This study investigates the design of reflective markers for use in activity recognition using low-exposure near-infrared (NIR) images. These reflective markers can be placed on everyday objects, e.g., kitchen knives, to recognize object-based activities, e.g., cutting vegetables. These visual markers must balance a need to keep the marker sizes small, to allow their placement on the everyday objects, while still being large enough for detection in the NIR images. The markers must also be identifiable when placed on curved surfaces, such as when wrapped around handles. Our investigation indicates that markers created using flexible retroreflective material with sizes as small as 7x7 mm can be attached to many surfaces and provide enough reflectivity to be detected in the NIR images used in this study.AA11838947研究報告ユビキタスコンピューティングシステム(UBI)2016-UBI-505132016-05-212188-86982016-05-17