ub>O₂ ---- This is the Pythagorean theorem: a2 + b2 = c2 This is the Pythagorean theorem: a² + b² = c²; @enduml

방향 Convolves the edge detection into all directions and combines the result with the Pythagorean theorem. This will be good for most uses. 위쪽 경계 This only detects changes going from top to bottom and