{"id":11766,"date":"2025-12-15T11:25:30","date_gmt":"2025-12-15T11:25:30","guid":{"rendered":"https:\/\/beta.est-kl.com\/?p=11766"},"modified":"2026-05-11T09:43:35","modified_gmt":"2026-05-11T09:43:35","slug":"prime%cb%a3-260-accuracy-and-precision-assessment","status":"publish","type":"post","link":"https:\/\/beta.est-kl.com\/pt-pt\/prime%cb%a3-260-accuracy-and-precision-assessment\/","title":{"rendered":"Prime\u02e3 260: Accuracy and Precision Assessment"},"content":{"rendered":"\n

Prime\u02e3 260: Accuracy and Precision Assessment<\/h1><\/div>\n\n\n\n
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Summary<\/h4><\/div>\n\n\n\n

The following report describes an accuracy validation test conducted with the Prime\u02e3 260 cameras. The test used a Thorlabs LTS-300C\/M translation stage (<5um error) as a source of ground truth for the length of a 100mm translation, operationalizing the error of the camera system as offset from the values reported by the stage. An 8-camera Prime\u02e3 260 system exhibited a mean displacement error of 0.037mm (\u00b1 .025mm) across nine 100mm translation trials, see Figure 3. Additionally, it demonstrated a static precision error of .015mm (\u00b1 .009mm).<\/p>\n\n\n\n

Methodology<\/h4><\/div>\n\n\n\n

Eight Prime\u02e3 260 cameras were mounted to truss, forming an 11m x 11m x 3.5m volume. The cameras were aimed toward a cart holding a Thorlabs LTS-300C\/M stage in the center of the volume, see Figure 1. The Prime\u02e3 260 cameras were set to a gain of 2 and an exposure of 250us. Mounted to the stage were four 19mm AnchorPuck LEDs, which provided the positional data for the test. The camera-to-target distances ranged from 5.8m to 8.6m. The system was calibrated with a standard wanding procedure, achieving median wand and ray errors of .059mm and .237mm, respectively.<\/p>\n\n\n\n

\"Figure
Figure 1: Left: The markers mounted to a linear stage. Right: A top-down view of the 3D volume.<\/em><\/figcaption><\/figure><\/div>\n\n\n\n
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Results<\/h2><\/div>\n\n\n\n

Positional Accuracy<\/h4><\/div>\n\n\n\n

To evaluate the system\u2019s positional accuracy, we compared the reported linear displacement of the markers (from their initial position) following a 100mm translation with the values reported by the Thorlabs LTS-300C\/M linear stage. The results showed that the system exhibited a mean displacement error of <= 0.037mm (SD = .025mm) across four markers and nine trials, see Table 1 and Figure 2.<\/p>\n\n\n\n

<\/td>Mean<\/td>SD<\/td>95%<\/td><\/tr>
Translation Error (mm)<\/td>0.037<\/td>0.025<\/td>0.083<\/td><\/tr><\/tbody><\/table>
Table 1: Accuracy Test Results<\/sup><\/figcaption><\/figure>\n\n\n\n
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Static Precision
<\/h4><\/div>\n\n\n\n

To test the system\u2019s precision while stationary, the positional displacement of the markers from their initial position (average of first 15 frames) before the translation was calculated. Across the nine recordings, the average positional deviation was .015mm (SD = .009mm), see Table 2 and Figure 3.<\/p>\n\n\n\n

<\/td>Mean<\/td>SD<\/td>95%<\/td><\/tr>
Static Precision Error (mm)<\/td>0.015<\/td>0.009<\/td>0.034<\/td><\/tr><\/tbody><\/table>
Table 2: Precision Test Results<\/sup><\/figcaption><\/figure>\n\n\n\n
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<\/div>\n\n\n\n

Conclusion<\/h2><\/div>\n\n\n\n

In this test, a Thorlabs LTS-300C\/M linear translation stage placed in the center of an 11m x 11m x 3.5m volume was used to validate the accuracy of our latest camera, the Prime\u02e3 260. The system of 8 Prime\u02e3 260 cameras reproduced the stage\u2019s 100mm translations to within .037mm (\u00b1 .025mm) across nine trials, demonstrating a static precision of .015mm (\u00b1 .009mm).<\/p>\n\n\n\n

Disclaimer<\/h2><\/div>\n\n\n\n

Achieving an optical tracking accuracy of <.1mm is not a simple task, even if the hardware is capable. Minute, nearly-imperceptible vibrations on only a few cameras can introduce additional noise and error into the system, especially as the distance between the cameras and the tracked object increase. Temperature changes can introduce additional noise at the interface between camera and mount, and within the truss system itself.<\/p>\n\n\n\n

For these tests, numerous steps were taken to mitigate the influence of external noise: All degrees of freedom in the camera mounts were tightly secured with a wrench. The tests were conducted after-hours in an empty building with the HVAC system disabled. The cameras were calibrated at their operational temperature, with the accuracy and precision testing done immediately afterward.<\/p>\n\n\n\n

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Specifications and other information are subject to change without notice. All brand and product names are trademarks or registered trademarks of their respective holders. The information on this webpage is provided by the respective named manufacturer and is for general information purposes. These data constitute a concrete indication of properties and condition only if they are expressly indicated by EST or have been agreed upon as a condition in writing.<\/p>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

The following report describes an accuracy validation test conducted with the Prime\u02e3 260 cameras. <\/p>\n","protected":false},"author":1,"featured_media":11783,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"unboxed","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[76],"tags":[],"class_list":["post-11766","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"spectra_custom_meta":{"_encloseme":["1"],"_icl_lang_duplicate_of":["11761"],"_thumbnail_id":["11783"],"_wp_old_slug":["optitrack-motive-3-1-2","optitrack-releases-motive-3-0-2"],"copied_media_ids":["a:4:{i:0;i:11769;i:1;i:11789;i:2;i:11791;i:3;i:11770;}","a:4:{i:0;i:11769;i:1;i:11789;i:2;i:11791;i:3;i:11770;}"],"referenced_media_ids":["a:1:{i:0;i:11769;}","a:1:{i:0;i:11769;}"],"_wpml_word_count":["58"],"_oembed_2073d02c40040739f1c54031a79c49ad":["