{"id":46,"date":"2023-09-25T10:40:56","date_gmt":"2023-09-25T08:40:56","guid":{"rendered":"https:\/\/ics.science.upjs.sk\/indora\/?page_id=46"},"modified":"2023-09-25T11:10:29","modified_gmt":"2023-09-25T09:10:29","slug":"grid-based-filters","status":"publish","type":"page","link":"https:\/\/ics.science.upjs.sk\/indora\/grid-based-filters\/","title":{"rendered":"Grid-based filters"},"content":{"rendered":"<p><a href=\"https:\/\/ics.science.upjs.sk\/indora\/wp-content\/uploads\/sites\/20\/2023\/09\/opiela_poster.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-33 size-large\" src=\"https:\/\/ics.science.upjs.sk\/indora\/wp-content\/uploads\/sites\/20\/2023\/09\/opiela_poster-724x1024.png\" alt=\"\" width=\"724\" height=\"1024\" srcset=\"https:\/\/ics.science.upjs.sk\/indora\/wp-content\/uploads\/sites\/20\/2023\/09\/opiela_poster-724x1024.png 724w, https:\/\/ics.science.upjs.sk\/indora\/wp-content\/uploads\/sites\/20\/2023\/09\/opiela_poster-212x300.png 212w, https:\/\/ics.science.upjs.sk\/indora\/wp-content\/uploads\/sites\/20\/2023\/09\/opiela_poster-768x1086.png 768w, https:\/\/ics.science.upjs.sk\/indora\/wp-content\/uploads\/sites\/20\/2023\/09\/opiela_poster-1087x1536.png 1087w, https:\/\/ics.science.upjs.sk\/indora\/wp-content\/uploads\/sites\/20\/2023\/09\/opiela_poster-1449x2048.png 1449w\" sizes=\"auto, (max-width: 724px) 100vw, 724px\" \/><\/a>Most solutions for smartphone-based positioning use Kalman or particle filter to fuse inputs. <strong>Grid-based<\/strong> filters are determinstic implementations of <strong>bayes filters<\/strong> which some advantages in computation and the ability to cover the whole space. However, stochastic <strong>particle filter<\/strong> is more popular due to its lower computational cost.<\/p>\n<p>In our research, we explore the <strong>grid-based methods<\/strong>. Step-based approach (smartphone sensors, pedestriand dead reckoning) and maps are utilized to obtain the position. Moreover, experiments with Wi-Fi, floor transition detection, and activity recognition are incorporated in the system. The approach was tested on<strong> IPIN competitions.<\/strong><\/p>\n<p>See more:<\/p>\n<ul>\n<li>Opiela, Miroslav, and Franti\u0161ek Gal\u010d\u00edk. &#8222;<a href=\"https:\/\/www.mdpi.com\/1424-8220\/20\/18\/5343\">Grid-based Bayesian filtering methods for pedestrian dead reckoning indoor positioning using smartphones.<\/a>&#8220;\u00a0<i>Sensors<\/i>\u00a020.18 (2020): 5343.<\/li>\n<li>Gal\u010d\u00edk, Franti\u0161ek, and Miroslav Opiela. &#8222;<a href=\"https:\/\/ieeexplore.ieee.org\/abstract\/document\/7743634\">Grid-based indoor localization using smartphones.<\/a>&#8220;\u00a0<i>2016 International Conference on Indoor Positioning and Indoor Navigation (IPIN)<\/i>. IEEE, 2016.<\/li>\n<li>Miroslav Opiela. <a href=\"https:\/\/ics.science.upjs.sk\/indora\/wp-content\/uploads\/sites\/20\/2023\/09\/phd_thesis.pdf\">Indoor Localisation using Smartphones<\/a>. Dissertation thesis.<\/li>\n<li><a href=\"https:\/\/ics.science.upjs.sk\/indora\/wp-content\/uploads\/sites\/20\/2023\/09\/opiela_poster.pdf\">Poster<\/a> focused on advanced point-mass method<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Most solutions for smartphone-based positioning use Kalman or particle filter to fuse inputs. Grid-based filters are determinstic implementations of bayes filters which some advantages in computation and the ability to&hellip;<\/p>\n","protected":false},"author":22,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-46","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/ics.science.upjs.sk\/indora\/wp-json\/wp\/v2\/pages\/46","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ics.science.upjs.sk\/indora\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ics.science.upjs.sk\/indora\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ics.science.upjs.sk\/indora\/wp-json\/wp\/v2\/users\/22"}],"replies":[{"embeddable":true,"href":"https:\/\/ics.science.upjs.sk\/indora\/wp-json\/wp\/v2\/comments?post=46"}],"version-history":[{"count":8,"href":"https:\/\/ics.science.upjs.sk\/indora\/wp-json\/wp\/v2\/pages\/46\/revisions"}],"predecessor-version":[{"id":68,"href":"https:\/\/ics.science.upjs.sk\/indora\/wp-json\/wp\/v2\/pages\/46\/revisions\/68"}],"wp:attachment":[{"href":"https:\/\/ics.science.upjs.sk\/indora\/wp-json\/wp\/v2\/media?parent=46"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}