Vision
The camera as a measuring instrument: what a pixel really tells you, what calibration measures, how range from apparent size falls apart with distance, why colour thresholds do not survive leaving the lab, and how to close a control loop on pixels.
Start in the simulator- U11.1 The pinhole camera One pixel is one ray. What that buys you, and what it does not.
- U11.2 Intrinsics and calibration Focal length in pixels, the principal point, and measuring them from known geometry.
- U11.3 Range from apparent size A known object gives a range, and the range gets worse as the square of itself.
- U11.4 A tag as a fix Range and bearing to a landmark you know the position of, which is a position fix.
- U11.5 Colour, and why it breaks Segmentation by threshold, what the threshold is really measuring, and where it fails.
- U11.6 Visual servoing Closing the loop on pixels instead of converting to metres first, and why that is more robust.
- U11.7 Project: find the one that is green Three identical shapes, one job, and a task the depth sensor cannot begin.