# Re-projection error reported by calibrateCamera, but Calibration Succeded!

Source: https://forum.modalai.com/topic/3361/re-projection-error-reported-by-calibratecamera-but-calibration-succeded
Category: Flight Core and Legacy VOXL (https://forum.modalai.com/category/9/flight-core-and-legacy-voxl)
Tags: voxl-cam
Posted: 2024-04-26 14:06:08 UTC by Amin Bassiri
Replies: 1 · Views: 1192

## Amin Bassiri · 2024-04-26 14:06:08 UTC

I calibrated the tarcking camera, and calibration was successful, but I got e-projection error reported by calibrateCamera.
What is the problem?
How can I solve it?

Drone: RB5
hw version: M0052
voxl-suite: 1.1.2
PX4 Version: 1.14.0dev

![Calibration.png](https://forum.modalai.com/assets/uploads/files/1714140199901-calibration.png)

## Reply by Guest · 2024-04-26 14:19:10 UTC

@Amin-Bassiri 

There will always be some reprojection error when computing a homography, as long as the error is below 0.5 (which it looks like yours is) you should be totally fine. 

Let me know if you have any other questions!

Thomas