[FEATURE] Experiment with prop measuring using a stereo camera

[benjaminwp18]

One of our tasks this year will be measuring a "shipwreck" within 5cm. One option we want to explore is using a stereo (dual) camera to perceive depth and get length from that.

Create an OpenCV/PyQt testing script that shows the frames coming from our dual cam (in the software box), allows the user to click on the ends of the shipwreck (i.e. PVC pipe) in each frame, and then outputs the predicted length of the shipwreck.

Something like this might be helpful.

[benjaminwp18]

https://github.com/CWRUbotix/rov-22/tree/main/vision/stereo

[benjaminwp18]

The first part of this presentation (calculating depth) will probably be necessary: http://www.cs.toronto.edu/~fidler/slides/2015/CSC420/lecture12_hres.pdf (summary here).

We'll need to calibrate things first probably. With calibrated cams and depth we'll have all three 3D axes, so we should be able to calculate distance?