# Aruco navigation, camera Intel realsense d415

**URL:** <https://discourse.slicer.org/t/aruco-navigation-camera-intel-realsense-d415/48245>\
**Category:** Support\
**Created:** [September 23, 2026, 2:47pm UTC](https://discourse.slicer.org/t/aruco-navigation-camera-intel-realsense-d415/48245 "2026-09-23T14:47:48Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![D.i\_V](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/d.i_v/32/82821_2.png) [@D.i\_V](https://discourse.slicer.org/u/D.i_V)\
**Post date:** [September 23, 2026, 2:47pm UTC](https://discourse.slicer.org/t/aruco-navigation-camera-intel-realsense-d415/48245/1 "2026-09-23T14:47:48Z")

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Hello! I am developing a navigation system model using ArUco markers. Configuration file - Optical marker tracker using MMF video from plus toolkit 2.8. I calibrated the camera using a chessboard pattern. The video in 3D Slicer is upside down. The pivot calibration error is on the order of 50 mm. What is the error in the standard configuration file? How can it be fixed? Are there Plus Toolkit configuration files for my camera for ArUco marker tracking?