3-coloring arrangements of line segments with 4 slopes is hard.

Patrizio Angelini Giordano Da Lozzo

Published in: Inf. Process. Lett. (2018)

Keyphrases

line segments
hough transform
straight line
ellipse detection
straight line segments
circular arcs
digital pictures
line detection
perspective images
viewpoint
aerial images
pattern matching
line correspondences
intersection points