Request for Camera Lens Profile Creation - XTU X3 Action Camera

1

Hi @gchen ,

Hope you all is well. I’m currently using 2 budget action cameras, the XTU X3, and I’ve followed the guide you shared in an earlier post to create calibration videos for generating the camera lens profile.

I’ve created calibration videos for 4K and 4K (4:3) resolutions. The checkerboard used for calibration has the following specifications:

  • Vertices: 22 x 12
  • Squares: 23 x 13

The calibration videos have been uploaded to Google Drive, and I’ve shared the link with you via PM.

Could you kindly help me create the lens profile for this camera? I truly appreciate your assistance and the effort you put into supporting the community.

Thank you so much!

Best regards,

2

Thank you for providing the videos. I’m posting the calibration data below. Please let me know if there is any stitching issue.

XTU X3 4K mode:

{
  "distortion_coefficients": [2.045767174034386,0.6204689533362956,-0.00038802197433594754,-7.227688070822287e-05,-0.053415393564429474,2.2591448375825425,1.238338837666774,-0.023737590972155297,0.0,0.0,0.0,0.0,0.0,0.0
],
  "intrinsic_matrix": [1870.6960263263395,0.0,1922.1272219628315,0.0,1869.5242214067334,1104.7673836812535,0.0,0.0,1.0
]
}

XTU X3 4K 4:3 mode:

{
  "distortion_coefficients": [1.9482961734462467,2.639680417100613,-0.00047136334256134857,-9.950354462205602e-05,0.14764557054971789,2.1389062339294136,3.205525245564865,0.6876198293903367,0.0,0.0,0.0,0.0,0.0,0.0
],
  "intrinsic_matrix": [1822.277370518832,0.0,1998.4622424729396,0.0,1822.0927342102345,1526.6311318164826,0.0,0.0,1.0
]
}
3

Thank you for providing the calibration data! I’ve tested it with two sample football match videos, and I’m happy to report that they are stitched well. The calibration data works great!

I really appreciate your help and support. Thank you for making this process so seamless!

4

XTU X3 seems to be a good choice. It uses Ambarella H22 and has a 1/2" sensor (IMX586). Just curious where did you buy them?

5

Yes, the XTU X3 has been a great choice so far! I bought it online from tmall.com and had it shipped to Hong Kong. It’s been working really well for my needs.