# Stereo camera does not appear in Camera Calibrator Overlay

Source: https://forum.modalai.com/topic/1247/stereo-camera-does-not-appear-in-camera-calibrator-overlay
Category: Flight Core and Legacy VOXL (https://forum.modalai.com/category/9/flight-core-and-legacy-voxl)
Tags: voxl-cam
Posted: 2022-08-25 20:59:36 UTC by Troi
Replies: 1 · Views: 786

## Troi · 2022-08-25 20:59:36 UTC

Hello, I am trying to calibrate the stereo camera using the instructions on the website (https://docs.modalai.com/calibrate-cameras/). I use the following command to start the calibration process:
`voxl-calibrate-camera stereo -l 0.04 -s 4x7`

I tried to view the calibration progress via the voxl-portal's Camera Calibrator Overlay. The Camera Calibrator Overlay option appears in the voxl-portal drop-down menu. However, the stereo view with overlay never appears.

When I try to exit camera calibration (via `Ctrl + C`), the program hangs and I have to exit the terminal to stop the program.

What should I do to solve the issue with the camera calibrator overlay and the stereo camera calibration?

## Reply by Thabisa · 2023-03-06 12:36:01 UTC

@Troi said in [Stereo camera does not appear in Camera Calibrator Overlay](/post/5793):
> Hello, I am trying to calibrate the stereo camera using the instructions on the website (https://docs.modalai.com/calibrate-cameras/). I use the following command to start the calibration process:
> `voxl-calibrate-camera stereo -l 0.04 -s 4x7`
> 
> I tried to view the calibration progress via the voxl-portal's Camera Calibrator Overlay. The Camera Calibrator Overlay option appears in the voxl-portal drop-down menu. However, the stereo view with overlay never appears.
> 
> When I try to exit camera calibration (via `Ctrl + C`), the program hangs and I have to exit the terminal to stop the program.
> 
> What should I do to solve the issue with the camera calibrator overlay and the stereo camera calibration?

I am having the same issue, any help will be appreciated. @Troi How did you resolve this?