Parametric Grouping: Grouping
Points into Lines
•
Basic Facts about Lines
(a,b)
c
(x,y) is on line if (x,y).(a,b) = c
Þ
ax + by = c
Distance from (x,y) to line is
(a,b).*(x,y) = ax + by
provided a*a + b*b = 1
