{"id":6540,"date":"2023-07-05T12:40:13","date_gmt":"2023-07-05T10:40:13","guid":{"rendered":"https:\/\/viewpointsystem.com\/?p=6540"},"modified":"2025-08-12T10:16:03","modified_gmt":"2025-08-12T08:16:03","slug":"auto-calibration-and-one-point-calibration-in-the-vps-19-smart-glasses","status":"publish","type":"post","link":"https:\/\/viewpointsystem.com\/en\/blog\/auto-calibration-and-one-point-calibration-in-the-vps-19-smart-glasses\/","title":{"rendered":"AUTO-CALIBRATION AND ONE-POINT CALIBRATION IN THE VPS 19 SMART GLASSES"},"content":{"rendered":"\n<div class=\"wp-block-uagb-image uagb-block-d12cb8d0 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/cdn.viewpointsystem.com\/neu\/wp-content\/uploads\/2023\/07\/05140936\/eye-gb5608cdda_1920-1024x683.jpg \" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/cdn.viewpointsystem.com\/neu\/wp-content\/uploads\/2023\/07\/05140936\/eye-gb5608cdda_1920-1024x683.jpg\" alt=\"\" class=\"uag-image-6595\" width=\"1138\" height=\"759\" title=\"\" loading=\"lazy\" role=\"img\"\/><\/figure><\/div>\n\n\n<p><em>By Alejandro Gloriani\u00a0<\/em><\/p>\n<p>We have developed a \u201cdigital twin\u201d of each eyeball to track the 3D geometry of the wearer\u2019s eyes in real time with only one camera per eye. This dynamic 3D model provides binocular gaze- and pupil-tracking data while compensating for glasses slippage and parallactic shifts.\u00a0<\/p>\n<p>Our digital-twin modeling needs to make certain assumptions about the anatomy of the wearer\u2019s eyeballs, such as the angle\u00a0\u03ba between the geometrical and visual axes (see Figure 1) or the curvature of the corneas. In the absence of wearer-specific data, we use values for a standard healthy human eye and thus provide an auto-calibrated prediction of the wearer\u2019s gaze. The accuracy of this auto-calibrated gaze is typically around 2\u00b0 and can be as good as 1\u00b0. The psychophysical state of the wearer and their fixation training have a significant influence on the accuracy.<\/p>\n\n\n<div class=\"wp-block-uagb-image aligncenter uagb-block-115989f5 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-center\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/cdn.viewpointsystem.com\/neu\/wp-content\/uploads\/2023\/07\/03163325\/Unbenannt-1.png \" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/cdn.viewpointsystem.com\/neu\/wp-content\/uploads\/2023\/07\/03163325\/Unbenannt-1.png\" alt=\"\" class=\"uag-image-6537\" width=\"743\" height=\"547\" title=\"\" loading=\"lazy\" role=\"img\"\/><figcaption class=\"uagb-image-caption\"><em><strong>Figure 1. <\/strong>Schematic representation of a human eye with normal vision.<\/em><\/figcaption><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">In other words, for most users our VPS 19 glasses work out of the box without any calibration, providing an auto-calibrated gaze accuracy that is good enough for many applications.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For situations that require a personalized calibration, we provide a simple one-point calibration procedure that estimates personalized&nbsp;\u03ba&nbsp;angles for each eyeball and improves the typical gaze accuracy to below 1\u00b0. This quick calibration is robust to glasses slippage and it takes only a few seconds to complete. The one-point calibration compensates for certain individual eye deviations, both symmetric individualities (such as myopic and hyperopic deviations), and asymmetric (strabismic, keratoconic) individualities.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>For most users our VPS 19 glasses work out of the box without any calibration, providing an auto-calibrated gaze accuracy that is good enough for many applications. For situations that require a personalized calibration, we provide a simple one-point calibration procedure that estimates personalized\u00a0\u03ba\u00a0angles for each eyeball and improves the typical gaze accuracy to below 1\u00b0.<\/p>\n","protected":false},"author":6,"featured_media":6641,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":true,"content-type":"","_uag_custom_page_level_css":"","footnotes":""},"categories":[13],"tags":[],"thema":[60],"coauthors":[68],"class_list":["post-6540","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","thema-product-updates","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-33"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>AUTO-CALIBRATION AND ONE-POINT CALIBRATION IN THE VPS 19 SMART GLASSES - VPS<\/title>\n<meta name=\"description\" content=\"We have developed a \u201cdigital twin\u201d of each eyeball to track the 3D geometry of the wearer\u2019s eyes in real time with only one camera per eye. This dynamic 3D model provides binocular gaze- and pupil-tracking data while compensating for glasses slippage and parallactic shifts.\u00a0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/viewpointsystem.com\/en\/blog\/auto-calibration-and-one-point-calibration-in-the-vps-19-smart-glasses\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"AUTO-CALIBRATION AND ONE-POINT CALIBRATION IN THE VPS 19 SMART GLASSES\" \/>\n<meta property=\"og:description\" content=\"We have developed a \u201cdigital twin\u201d of each eyeball to track the 3D geometry of the wearer\u2019s eyes in real time with only one camera per eye. This dynamic 3D model provides binocular gaze- and pupil-tracking data while compensating for glasses slippage and parallactic shifts.\u00a0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/viewpointsystem.com\/en\/blog\/auto-calibration-and-one-point-calibration-in-the-vps-19-smart-glasses\/\" \/>\n<meta property=\"og:site_name\" content=\"VPS\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-05T10:40:13+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-12T08:16:03+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.viewpointsystem.com\/neu\/wp-content\/uploads\/2023\/02\/24113910\/Foto_Credit-HPS.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"2539\" \/>\n\t<meta property=\"og:image:height\" content=\"1412\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Alejandro Gloriani\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Alejandro Gloriani\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/viewpointsystem.com\\\/en\\\/blog\\\/auto-calibration-and-one-point-calibration-in-the-vps-19-smart-glasses\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/viewpointsystem.com\\\/en\\\/blog\\\/auto-calibration-and-one-point-calibration-in-the-vps-19-smart-glasses\\\/\"},\"author\":{\"name\":\"Jana Riethausen\",\"@id\":\"https:\\\/\\\/viewpointsystem.com\\\/en\\\/#\\\/schema\\\/person\\\/c2c530658677454de69228450f94acb7\"},\"headline\":\"AUTO-CALIBRATION AND ONE-POINT CALIBRATION IN THE VPS 19 SMART GLASSES\",\"datePublished\":\"2023-07-05T10:40:13+00:00\",\"dateModified\":\"2025-08-12T08:16:03+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/viewpointsystem.com\\\/en\\\/blog\\\/auto-calibration-and-one-point-calibration-in-the-vps-19-smart-glasses\\\/\"},\"wordCount\":260,\"publisher\":{\"@id\":\"https:\\\/\\\/viewpointsystem.com\\\/en\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/viewpointsystem.com\\\/en\\\/blog\\\/auto-calibration-and-one-point-calibration-in-the-vps-19-smart-glasses\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/cdn.viewpointsystem.com\\\/neu\\\/wp-content\\\/uploads\\\/2023\\\/07\\\/07090509\\\/Beitragsbild-2.jpg\",\"articleSection\":[\"Blogpost\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/viewpointsystem.com\\\/en\\\/blog\\\/auto-calibration-and-one-point-calibration-in-the-vps-19-smart-glasses\\\/\",\"url\":\"https:\\\/\\\/viewpointsystem.com\\\/en\\\/blog\\\/auto-calibration-and-one-point-calibration-in-the-vps-19-smart-glasses\\\/\",\"name\":\"AUTO-CALIBRATION AND ONE-POINT CALIBRATION IN THE VPS 19 SMART GLASSES - VPS\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/viewpointsystem.com\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/viewpointsystem.com\\\/en\\\/blog\\\/auto-calibration-and-one-point-calibration-in-the-vps-19-smart-glasses\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/viewpointsystem.com\\\/en\\\/blog\\\/auto-calibration-and-one-point-calibration-in-the-vps-19-smart-glasses\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/cdn.viewpointsystem.com\\\/neu\\\/wp-content\\\/uploads\\\/2023\\\/07\\\/07090509\\\/Beitragsbild-2.jpg\",\"datePublished\":\"2023-07-05T10:40:13+00:00\",\"dateModified\":\"2025-08-12T08:16:03+00:00\",\"description\":\"We have developed a \u201cdigital twin\u201d of each eyeball to track the 3D geometry of the wearer\u2019s eyes in real time with only one camera per eye. 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