Design and construction of tools with reflecting-disks fiducials for optical stereo trackers: An afforable technique for navigation tools development

In this article, a rapid prototyping tool design and construction for the development of tools for navigation optical systems is presented. Theses markers differentiate from commonly used ones because they use cheap reflective stickers as markers fiducials. We built markers with a 3D printer and tested two different sized circular reflective stickers with calibration errors bellow to 0.25 mm. The reflection angle of the sticker fiducials are their mayor problem. Nevertheless, the obtained calibration accuracy (quite similar to state of the art fiducials) could be a fast and cheap option to be used with non-risky applications, such as metrology or object digitalization in which the reflection loss due to critical angles is not an issue.