Tag frame in images is misleading

[richardrl]

Hi,
Thanks for the library.
The tag frame in images is misleading. In the main readme, it appears think the Z axis points up away from the physical tag but the Z-axis actually points into the AprilTag. The reason why is here:

AprilTag/scripts/apriltag.py

Line 559 in 0b700ac

opoints = numpy.float32([[1,0,0],

This took me some hours to diagnose so thought I'd leave a note here.
Check this: https://github.com/AprilRobotics/apriltag?tab=readme-ov-file#pose-estimation
for more accurate description of what the camera / object pose conventions are.