Axis M1101 Distance Measure error

[Ninjabot513]

Hello everyone,


This is our first year using the M1101 camera. We have read the 2012 Vision whitepaper posted on CD. We are getting seemingly inconsistent errors in our distance measurements. For example, if the actual distance to the vision targets is 5ft, the measured value would be 9.2ft one time and 7.7ft another time. We have tried measuring at different distances; If we take the average of the errors across different distances it comes out to approximately 3ft.

Those of you with camera experience, can you please advise how to correct this problem?

Thanks in advance for your help.