# VOXL Flightcore Camera Calibration Reprojection Error Reported By calibrateCamera

Source: https://forum.modalai.com/topic/948/voxl-flightcore-camera-calibration-reprojection-error-reported-by-calibratecamera
Category: Flight Core and Legacy VOXL (https://forum.modalai.com/category/9/flight-core-and-legacy-voxl)
Tags: voxl-flight
Posted: 2022-05-18 16:59:51 UTC by John Nomikos
Replies: 4 · Views: 1835

## John Nomikos · 2022-05-18 16:59:51 UTC

Hello again.

So I've been trying to calibrate the cameras on a VOXL Flightcore and everytime the calibration is finished, a max reprojection error happens. I am not sure what this is caused by.

Is it due to the camera quality? It's strange because it has happening on both of the drones I'm working with.

![94de0f48-0093-418b-bf81-0edc1d3b5ee4-image.png](https://forum.modalai.com/assets/uploads/files/1652893361235-94de0f48-0093-418b-bf81-0edc1d3b5ee4-image.png)

## Reply by John Nomikos · 2022-05-19 14:44:32 UTC

We managed to get it to work once after changing the lighting in the room, but we cannot get the intrinsics file to generate for some reason

## Reply by John Nomikos · 2022-05-19 17:32:00 UTC

We managed to fix the intrinsic file not generating by deleting the already existing extrinsic file

## Reply by yx · 2023-06-26 07:14:11 UTC

Hi, you managed to succeed for all calibration? If so, how did you do that?

## Reply by martongonczy · 2023-08-02 12:18:21 UTC

I had the same issues but even with different lighting, I cannot get it to work. I managed to calibrate the tracking camera but not the stereo. Does anyone have any idea how I could try to fix this?

I have the same problem: The reprojection error is to large for the stereo cameras and the calibration fails.