Perfect Nodal Offset for Virtual Production using RETracker Bliss. No More Sliding Feet!
Sliding feet and misalignment are a common problem for Virtual Production. RETracker Bliss can measure your lens nodal point and tracking offset to fix this for you. This works similar to the VIVE method I've shown before, but now you can do it with RETracker Bliss and an Apriltag. Variations of this method can be used on any tracking system that can track another object in the scene besides the camera. This tutorial shows how. It starts assuming you have already calibrated your lens distortion, if you haven't done this please check out my earlier tutorials below. If you need more info on how to use this method with other trackers, please leave a comment and I'll try to help.
If you want to buy RETracker Bliss go to
https://www.retracker.co/
My Bliss Live Link drivers and sample project to go with this video
https://github.com/MiloMindbender/Liv...
My recent "setup a Virtual Production project from scratch" tutorial, shows how to setup Bliss and do a lens calibration.
• Virtual Production Project Tutorial f...
My older Lens Calibration video, shows how to calibrate lens distortion and measure the nodal point and offset with VIVE trackers.
• Unreal 4.27 built in lens calibrator ...
00:00 Tracking without sliding feet!
00:26 Using Unreal's lens calibrator
00:48 How to get RETracker Bliss
01:35 Get sample project and tools
02:00 Compatibility from Unreal 5.0 to 5.1
02:28 Calibrate your lens distortion first
03:00 Setup to Measure Nodal Point and offset
03:40 Setup RETracker Bliss
04:45 Live Link
05:04 Set Aruco and AprilTag sizes
05:36 Measure Nodal Offset
06:35 Capture more images
07:24 Apply to Nodal Offset and test
08:20 Align your studio with the Virtual Set
09:45 Errors and fixes
10:35 Fix alignment, little known check box
12:15 Look! No slipping!
13:00 Difference between UE 5.0 and 5.1
14:46 Different Composure, not a green screen
15:44 Wrap up
#virtualproduction #unrealengine #RETrackerBliss