Update OpenCV API Calls to Latest API

[peterdavidfagan]

The camera calibration code is outdated and uses an older version of OpenCV if time arises or if an open source contributor has the capacity to it would be great to upgrade the API calls to the latest API.

[peterdavidfagan]

In general the updated API vastly simplifies the code so this update is worth making.

[luffycheung]

cv2.calibrateHandEye，use method 1 cv2.CALIB_HAND_EYE_TSAI performs well. method 4 result has mistake.

[peterdavidfagan]

Thanks for the above information @luffycheung. I am out sick at the moment with a virus but once I am back at work I will look to schedule updates to this issue.

What robot platform are you using @luffycheung, would be happy to collaborate on software dev if we are using similar platforms as we can then compare benchmarks on real-hardware for a given config.