Hugin lens calibration GUI not detecting lines

[Šarūnas Burdulis]

Hello,
I'm trying to use calibrate_lens_gui on Ubuntu 13.10/KDE. I took pictures of rectangular grid (please see the attached) with lenses I would like to calibrate.

I Add one picture; Focal length and multiplier are correctly detected. Click Find and then Optimize and I only get the

'There are no detected lines.
Please run "Find lines" first. If there are no lines found, change the parameters.'

message.

I tried to variate the parameters under Options one by one to no avail, but I'm not sure I understand the actual meaning of each parameter.

If Preview is switched to Edge detection, the lines seem to be detected.

Any suggestions on how to get calibration working would be greatly appreciated.

Kind regards,
Šarūnas

[T. Modes]

Am Donnerstag, 20. Februar 2014 02:42:50 UTC+1 schrieb Šarūnas Burdulis:

'There are no detected lines.
Please run "Find lines" first. If there are no lines found, change the parameters.'

message.

I tried to variate the parameters under Options one by one to no avail, but I'm not sure I understand the actual meaning of each parameter.

Calibrate_lens_gui does currently not detect crossing lines. It detect only straight lines without crossing. So the image is not suitable for calibrate_lens_gui.

Thomas