Lesson 04 of 05 · about 4 min

Find the edge

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

An edge is a sharp change in intensity. A simple detector subtracts neighbors. A flat run subtracts to nothing. The pair with the large difference is the edge.

Four samples read 4, 4, 9, 9. Name the boundary where the edge sits.

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