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When the marker is lost for being outside of the field of view, the system will be based on natural features to accomplish user tracking. Visitors from a cultural heritage space \u2013 the Roman Ruins of Conimbriga \u2013 tested the app and evaluated it. They considered that the presented system should be implemented in the referred cultural space, as well as in other archaeological spaces.<\/jats:p>","DOI":"10.4018\/ijcicg.2018010102","type":"journal-article","created":{"date-parts":[[2018,7,30]],"date-time":"2018-07-30T17:39:59Z","timestamp":1532972399000},"page":"15-31","source":"Crossref","is-referenced-by-count":1,"title":["Mobile AR Performance Issues in a Cultural Heritage Environment"],"prefix":"10.4018","volume":"9","author":[{"given":"Anabela","family":"Marto","sequence":"first","affiliation":[{"name":"ESTG, CIIC, Polytechnic Institute of Leiria, Leiria, Portugal"}]},{"given":"A Augusto","family":"Sousa","sequence":"additional","affiliation":[{"name":"INESC TEC, Faculty of Engineering of the University of Porto, Leiria, Portugal"}]}],"member":"2432","reference":[{"key":"IJCICG.2018010102-0","doi-asserted-by":"publisher","DOI":"10.5121\/ijcsa.2015.5102"},{"key":"IJCICG.2018010102-1","unstructured":"Augment. (2016). 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