{"id":2339,"date":"2021-01-27T12:54:50","date_gmt":"2021-01-27T17:54:50","guid":{"rendered":"https:\/\/wordpress.cs.vt.edu\/3digroup\/?p=2339"},"modified":"2021-01-27T12:56:52","modified_gmt":"2021-01-27T17:56:52","slug":"bare-hand-object-referencing-in-collaborative-ar","status":"publish","type":"post","link":"https:\/\/wordpress.cs.vt.edu\/3digroup\/2021\/01\/27\/bare-hand-object-referencing-in-collaborative-ar\/","title":{"rendered":"Bare-Hand Object Referencing in Collaborative AR"},"content":{"rendered":"\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<figure class=\"wp-block-gallery columns-2 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"665\" src=\"http:\/\/wordpress.cs.vt.edu\/3digroup\/wp-content\/uploads\/sites\/141\/2021\/01\/Screen-Shot-2021-01-26-at-6.29.47-PM-1024x665.png\" alt=\"\" data-id=\"2347\" data-full-url=\"http:\/\/wordpress.cs.vt.edu\/3digroup\/wp-content\/uploads\/sites\/141\/2021\/01\/Screen-Shot-2021-01-26-at-6.29.47-PM.png\" data-link=\"https:\/\/wordpress.cs.vt.edu\/3digroup\/?attachment_id=2347\" class=\"wp-image-2347\" srcset=\"https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-content\/uploads\/sites\/141\/2021\/01\/Screen-Shot-2021-01-26-at-6.29.47-PM-1024x665.png 1024w, https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-content\/uploads\/sites\/141\/2021\/01\/Screen-Shot-2021-01-26-at-6.29.47-PM-300x195.png 300w, https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-content\/uploads\/sites\/141\/2021\/01\/Screen-Shot-2021-01-26-at-6.29.47-PM-768x499.png 768w, https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-content\/uploads\/sites\/141\/2021\/01\/Screen-Shot-2021-01-26-at-6.29.47-PM.png 1125w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img decoding=\"async\" src=\"http:\/\/wordpress.cs.vt.edu\/3digroup\/wp-content\/uploads\/sites\/141\/2021\/01\/Screen-Shot-2021-01-26-at-6.29.33-PM-1024x665.png\" alt=\"\" data-id=\"2348\" data-full-url=\"http:\/\/wordpress.cs.vt.edu\/3digroup\/wp-content\/uploads\/sites\/141\/2021\/01\/Screen-Shot-2021-01-26-at-6.29.33-PM.png\" data-link=\"https:\/\/wordpress.cs.vt.edu\/3digroup\/?attachment_id=2348\" class=\"wp-image-2348\" \/><\/figure><\/li><\/ul><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>An observer&#8217;s interpretation of a pointer&#8217;s referencing gestures depends on occlusion cues.<\/em><\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">In many collaborative tasks, the need for joint attention arises when one of the users wants to guide others to a specific location or target in space. If the collaborators are collocated and the target position is in close range, it is almost instinctual for users to refer to the target location by pointing with their bare hands. While such pointing gestures can be efficient and effective in real life, performance will be impacted if the target is in augmented reality (AR), where depth cues like occlusion may be missing if the pointer&#8217;s hand is not tracked and modeled in 3D. In this project, we present a study utilizing head-worn AR displays to examine the effects of incorrect occlusion cues on spatial target identification in a collaborative bare-handed referencing task. We found that participants&#8217; performance in AR was reduced compared to a real-world condition, but also that they developed new strategies to cope with the limitations of AR. Our work also identified mixed results of the effect of spatial relationships between us.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>An observer&#8217;s interpretation of a pointer&#8217;s referencing gestures depends on occlusion cues. In many collaborative tasks, the need for joint attention arises when one of the users wants to guide others to a specific location or target in space. If the collaborators are collocated and the target position is in close range, it is almost <a href=\"https:\/\/wordpress.cs.vt.edu\/3digroup\/2021\/01\/27\/bare-hand-object-referencing-in-collaborative-ar\/\" class=\"more-link\">&#8230;<\/a><\/p>\n","protected":false},"author":261,"featured_media":2348,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[27,453],"ppma_author":[401,391,448],"class_list":["post-2339","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-projects","tag-augmented-reality","tag-collaboration"],"jetpack_featured_media_url":"https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-content\/uploads\/sites\/141\/2021\/01\/Screen-Shot-2021-01-26-at-6.29.33-PM-e1611770127703.png","authors":[{"term_id":401,"user_id":261,"is_guest":0,"slug":"yli92","display_name":"Yuan Li","avatar_url":{"url":"https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-content\/uploads\/sites\/141\/2021\/09\/DSC3092-v1.jpg","url2x":"https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-content\/uploads\/sites\/141\/2021\/09\/DSC3092-v1.jpg"},"author_category":"","user_url":"https:\/\/yuanli3d.com\/","last_name":"Li","first_name":"Yuan","job_title":"","description":""},{"term_id":391,"user_id":331,"is_guest":0,"slug":"dbowman","display_name":"Doug Bowman","avatar_url":{"url":"https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-content\/uploads\/sites\/141\/2021\/01\/professional_photo2_2019-cropped-square-smaller-scaled.jpg","url2x":"https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-content\/uploads\/sites\/141\/2021\/01\/professional_photo2_2019-cropped-square-smaller-scaled.jpg"},"author_category":"1","user_url":"","last_name":"Bowman","first_name":"Doug","job_title":"","description":"Doug A. Bowman is the Frank J. Maher Professor of <a href=\"http:\/\/www.cs.vt.edu\">Computer Science<\/a> at <a href=\"http:\/\/www.vt.edu\">Virginia Tech<\/a>. He is the principal investigator of the <a href=\"http:\/\/wordpress.cs.vt.edu\/3digroup\/\">3D Interaction Group<\/a>, focusing on the topics of three-dimensional user interfaces, VR\/AR user experience, and the benefits of immersion in virtual environments.\r\n\r\nDr. Bowman is one of the co-authors of <a href=\"https:\/\/www.pearson.com\/us\/higher-education\/program\/La-Viola-3-D-User-Interfaces-Theory-and-Practice-2nd-Edition\/PGM101825.html\">3D User Interfaces: Theory and Practice<\/a>. He has served in many roles for the <a href=\"http:\/\/ieeevr.org\">IEEE Virtual Reality Conference<\/a>, including program chair, general chair, and steering committee chair. He also co-founded the IEEE Symposium on 3D User Interfaces (now part of IEEE VR). He received a CAREER award from the National Science Foundation for his work on 3D Interaction, and has been named an ACM Distinguished Scientist. He received the Technical Achievement award from the IEEE Visualization and Graphics Technical Committee in 2014 and the Career Impact Award from IEEE ISMAR in 2021.\r\n\r\nHis undergraduate degree in mathematics and computer science is from Emory University, and he received his M.S. and Ph.D. in computer science from the Georgia Institute of Technology.\r\n\r\n<a href=\"http:\/\/people.cs.vt.edu\/~bowman\/cv.pdf\">Curriculum vitae (PDF)<\/a>"},{"term_id":448,"user_id":0,"is_guest":1,"slug":"sang-won-lee","display_name":"Sang Won Lee","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","author_category":"","user_url":"","last_name":"","first_name":"","job_title":"","description":""}],"_links":{"self":[{"href":"https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-json\/wp\/v2\/posts\/2339","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-json\/wp\/v2\/users\/261"}],"replies":[{"embeddable":true,"href":"https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-json\/wp\/v2\/comments?post=2339"}],"version-history":[{"count":3,"href":"https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-json\/wp\/v2\/posts\/2339\/revisions"}],"predecessor-version":[{"id":2358,"href":"https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-json\/wp\/v2\/posts\/2339\/revisions\/2358"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-json\/wp\/v2\/media\/2348"}],"wp:attachment":[{"href":"https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-json\/wp\/v2\/media?parent=2339"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-json\/wp\/v2\/categories?post=2339"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-json\/wp\/v2\/tags?post=2339"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/wordpress.cs.vt.edu\/3digroup\/wp-json\/wp\/v2\/ppma_author?post=2339"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}