{"id":83,"date":"2022-03-17T08:06:01","date_gmt":"2022-03-17T06:06:01","guid":{"rendered":"http:\/\/www.hh3dlab.fi\/blog\/?page_id=83"},"modified":"2022-03-22T08:09:53","modified_gmt":"2022-03-22T06:09:53","slug":"3d-scanning","status":"publish","type":"page","link":"https:\/\/www.hh3dlab.fi\/blog\/3d\/3d-scanning\/","title":{"rendered":"3D scanning"},"content":{"rendered":"\n<p>To scan a 3D object, many methods are available. There are machines that physically touch the object from all sides and then calculates the shape of the object, but these are very expensive and space-consuming, if very accurate. <\/p>\n\n\n\n<p>Non-contact methods include<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>laser triangulation 3D scanning technology.<\/li><li>structured light 3D scanning technology.<\/li><li>photogrammetry.<\/li><li><span style=\"color: initial;\">laser pulse-based 3D scanning technology.<\/span><\/li><li>laser-based 3D scanners.<\/li><\/ul>\n\n\n\n<p>Of these, laser systems are mostly used for scanning volumes, such as rooms, construction sites, or very large objects. These systems also cost a lot of money &#8211; a <a rel=\"noreferrer noopener\" href=\"https:\/\/leica-geosystems.com\/fi-fi\/products\/laser-scanners\/scanners\/leica-rtc360\" target=\"_blank\">Leica laser scanner system<\/a> is in the region of 50,000 \u20ac, but the accuracy of the system is nothing short of amazing.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Structured light<\/h2>\n\n\n\n<p>For Haaga-Helia, such laser  systems are not viable. Therefore our Lab acquired an <a rel=\"noreferrer noopener\" href=\"https:\/\/www.3d-tulostus.fi\/Artec-Eva-3D-scanner\" target=\"_blank\">Artec EVA structured light scanner<\/a>, when a 30,000 \u20ac grant was made available to furnish the Lab. This scanner projects a light grid on the object being scanned, and deduces the form of the object from the deformations of the light grid. It also takes regular photographs, which makes it possible to add textures to the meshes, resulting in a lifelike digital copy of the object and not just the mesh. The accuracy of the EVA is around 0.1mm in three dimensions, and a scan of a teddy bear results in 300,000 vertices, so the resolution of the mesh is stunning.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"640\" src=\"https:\/\/i0.wp.com\/www.hh3dlab.fi\/blog\/wp-content\/uploads\/2022\/03\/IMG_20200505_092004-edited.jpg?resize=640%2C640&#038;ssl=1\" alt=\"\" class=\"wp-image-223\" srcset=\"https:\/\/i0.wp.com\/www.hh3dlab.fi\/blog\/wp-content\/uploads\/2022\/03\/IMG_20200505_092004-edited.jpg?w=2000&amp;ssl=1 2000w, https:\/\/i0.wp.com\/www.hh3dlab.fi\/blog\/wp-content\/uploads\/2022\/03\/IMG_20200505_092004-edited.jpg?resize=300%2C300&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.hh3dlab.fi\/blog\/wp-content\/uploads\/2022\/03\/IMG_20200505_092004-edited.jpg?resize=1024%2C1024&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.hh3dlab.fi\/blog\/wp-content\/uploads\/2022\/03\/IMG_20200505_092004-edited.jpg?resize=150%2C150&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.hh3dlab.fi\/blog\/wp-content\/uploads\/2022\/03\/IMG_20200505_092004-edited.jpg?resize=768%2C768&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.hh3dlab.fi\/blog\/wp-content\/uploads\/2022\/03\/IMG_20200505_092004-edited.jpg?resize=1536%2C1536&amp;ssl=1 1536w, https:\/\/i0.wp.com\/www.hh3dlab.fi\/blog\/wp-content\/uploads\/2022\/03\/IMG_20200505_092004-edited.jpg?w=1280&amp;ssl=1 1280w, https:\/\/i0.wp.com\/www.hh3dlab.fi\/blog\/wp-content\/uploads\/2022\/03\/IMG_20200505_092004-edited.jpg?w=1920&amp;ssl=1 1920w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><figcaption>Artec EVA with peripherals<\/figcaption><\/figure><\/div>\n\n\n\n<p>The process of scanning is very simple, just point the device at the object and follow the screen to see that the distance to the object stays constant:<\/p>\n\n\n\n<figure class=\"wp-block-video\"><video height=\"770\" style=\"aspect-ratio: 882 \/ 770;\" width=\"882\" controls src=\"https:\/\/www.hh3dlab.fi\/blog\/wp-content\/uploads\/2022\/03\/EVA-scanning.mp4\"><\/video><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Photogrammetry<\/h2>\n\n\n\n<p>This technology is very simple. Given enough photographs of an object, the photogrammetry software is able to deduce the form and texture of the object. Usually 40 HD photographs are sufficient to do this. Photogrammetry software include Autodesk Recap, which is a pro quality system, Capturing Reality which is a more affordable solution, and open source solutions such as Meshroom. <\/p>\n\n\n\n<p>At Haaga-Helia, students have a license for all Autodesk products, but they expire at graduation. The Lab has acquired student licenses to <a rel=\"noreferrer noopener\" href=\"https:\/\/www.capturingreality.com\/\" target=\"_blank\">Capturing Reality<\/a>, which is a very powerful photogrammetry tool. We also built our own HD webcam based system to automate the photography.<\/p>\n\n\n","protected":false},"excerpt":{"rendered":"<p>To scan a 3D object, many methods are available. There are machines that physically touch the object from all sides and then calculates the shape of the object, but these are very expensive and space-consuming, if very accurate. Non-contact methods include laser triangulation 3D scanning technology. structured light 3D scanning technology. photogrammetry. laser pulse-based 3D [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":92,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-83","page","type-page","status-publish","hentry"],"jetpack-related-posts":[{"id":92,"url":"https:\/\/www.hh3dlab.fi\/blog\/3d\/","url_meta":{"origin":83,"position":0},"title":"3D","author":"Heikki Hietala, lab admin","date":"17.3.2022","format":false,"excerpt":"3D is a technology that is penetrating more and more fields of business every day. CAD and other design aids are indispensable by now, but with the twenty year development of the open source 3D software, Blender, getting into 3D is no longer an investment. However, Blender being free does\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.hh3dlab.fi\/blog\/wp-content\/uploads\/2022\/03\/full-scene2.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.hh3dlab.fi\/blog\/wp-content\/uploads\/2022\/03\/full-scene2.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.hh3dlab.fi\/blog\/wp-content\/uploads\/2022\/03\/full-scene2.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.hh3dlab.fi\/blog\/wp-content\/uploads\/2022\/03\/full-scene2.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.hh3dlab.fi\/blog\/wp-content\/uploads\/2022\/03\/full-scene2.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/www.hh3dlab.fi\/blog\/wp-content\/uploads\/2022\/03\/full-scene2.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":121,"url":"https:\/\/www.hh3dlab.fi\/blog\/","url_meta":{"origin":83,"position":1},"title":"WELCOME!","author":"Heikki Hietala, lab admin","date":"17.3.2022","format":false,"excerpt":"Haaga-Helia 3D + Robo Lab is the 3D, Robotics and IoT research laboratory at Haaga-Helia University of Applied Sciences. 3D is a topic that concerns all possible fields today. 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