OpenCV version 4.1.1
on Linux openSUSE Tumbleweed
Compiler is g++

Detailed description

I get this error message when trying to call calibrateCamera. I searched on it in some foruns and found out that it can mean that either:

• my vectors of object points and image points are not the same size (in my case, they are, I did check that)

• the type is wrong (in this case, I have no idea what to do).

Anyway, this message is really not intuitive and aside from some help with my situation I'd appreciate if this exception could have a better error message.

terminate called after throwing an instance of 'cv::Exception'
  what():  OpenCV(4.1.1) /home/abuild/rpmbuild/BUILD/opencv-4.1.1/modules/calib3d/src/calibration.cpp:3349: error: (-215:Assertion failed) ni == ni1 in function 'collectCalibrationData'

Steps to reproduce

My module can be seen here: https://github.com/torresguilherme/bakeneko/blob/master/src/calibration/calibration.cpp

thanks in advance for your work and the assistance