CALIBRATING THE SYSTEM
The system will prompt you to calibrate at the beginning of a new session. You should also do it if the bike has been moved (such as turning it around to capture the other side). The process aligns the camera to the plane of the bike.
The 5 points that are captured allow us to correct for pitch, yaw and roll so it doesn’t matter whether the bike or camera is level or perfectly aligned.
To begin calibration click the button:
The first step is to reduce the screen size to fit the bike and rider (you will not have the rider on the bike at this point so estimate the height required) - this improves the speed of the system by discarding unnecessary image data. It also makes it easier to focus on the rider.
The next step is to select which side of the bike you’re looking at and identify the diameter of the handlebars.
The 3rd step is collecting alignment points. The in-system help will guide you through the required locations.
The current point will be highlighted in Orange text, once the system has acquired that point the text becomes green and moves to the next location. The system will not collect another point within 50mm of the last one so there is no risk in holding the wand in one location for too long.
The point collection process is demonstrated in this video:
The system waits until the wand has been steady for 30 samples before acquiring a point. This usually only takes 1 second so it is advisable to cover the locator triangles until the wand is in position.
If you are finding that the system is not picking up a point you may need to alter the angle of the wand until the Kinect can recognise it properly (as shown with the front axle in the video).
Please note that the most important elements of the calibration process are that points 1,2 and 3 need to be in the same plane and that points 4 and 5 need to be the same height when the bike is on flat ground (they may not be the same height when it is on a trainer).
Once the process is complete click:
and proceed to Measuring the bike