mintar
commented
1 year ago there is symmetry of 4 times 90 degrees in each axis
Not quite. The cube has *6 4 == 24** symmetries:
- each of the 6 sides pointing towards the camera
- multiplied by all 4 90° rotations around the axis that points towards the camera.
If you just specify 4 times 90° in each of the 3 axes, you will get 4 4 4 == 64 symmetries, which would be wrong because there are duplicates.
You have to write a script that calculates these symmetries and stores them in the symmetries_discrete field, like I did for the hex screw object.
Maybe you can use this StackOverflow answer as a starting point.
i would like to recognize a one color cube in the real world. I am aware that I have to consider the symmetries of the cube. How would the transformation matrices have to be set up, since there is symmetry of 4 times 90 degrees in each axis? has anyone had any experience with this? Thx for any help