Calibration Issues with Stereo cameras!

Raspberry Pi Cameras sync-stereo-camera-hat
1

1.Which seller did you purchase the product(s) from?
UCTRONICS
2.The Model number of the product(s) you have purchased?
https://www.uctronics.com/arducam-synchronized-stereo-camera-bundle-kit-5mp-for-raspberry-pi-2254.html
3.Which Platform are you using the product(s) on?
Raspberry Pi 4B
4.Which instruction are you following?
stereo_depth_demo
5.Has your product ever worked properly?
Never
6.What problems are you experiencing?
Hello,

I purchased the Stereo HAT 5MP Synchronised Cameras (here) and I use it with Raspberry Pi 4B and Raspbian 32 bit.

I’m doing the stereo_depth_demo and have an issue with camera calibration.

Actually, the calibration is very weird.

I tried to retake the chessboard images a few times, I always end up with something weird during rectification.

Here’s another example.

The images are worst than when uncalibrated.

Can you help me? What am I doing wrong?

Thank you,
7.What attempts at troubleshooting have you already made?

8.How would you like us to help you?

2

Hi @Jeremy26

Can you try to take fewer photos?
For example, 10 photos.

3

Thank you for your answer.

With half images, the result is similar.

 

What worked, for now, is to use some FLAGS (fix K1, K2, K3) in the call for calibration.

The calibration and rectification code cannot work as it is for me because of that radial distortion.

4

Hi @Jeremy26

It seems that the calibration procedure has some problems, thank you for the information.