Edges, Contours, Thresholding, and Segmentation Intuition

By the end of this module you can find edges, contours and regions in an image, and judge when a clean-looking segmentation is really an artefact of your threshold rather than the object.

Units

1. Unit 04.00: Edges are gradients, not outlines
2. Unit 04.01: Contours, and what counts as one object
3. Unit 04.02: Adaptive thresholding when lighting varies
4. Unit 04.03: Where classical segmentation stops working
5. Unit 04.04: Measuring a segmentation against a hand-drawn mask

Module work

• Activity
• Knowledge check
• Summary