CSE 455: Computer Vision

Winter 2007

Course Software: lpeg output format

The output file produced by lpeg looks like the output of fex: a number of sections, each starting with text tag and containing zero or more description lines.

lpeg passes through the lines and circular arcs it is input, plus it adds the following groupings:

#OVParallel

#NOVParallel

#Collinear

pairs of lines which are parallel and overlapping, parallel and nonoverlapping, or collinear.

int	line 1 ID
int	line 2 ID
float	vline start point column
float	vline start point row
float	vline end point column
float	vline end point row
float	vline length
float	vline orientation
float	width/height
float	quality of overlap

#L_Junctions

#V_Junctions

#T_Junctions

#Lambda_Junctions

pairs of lines which form L, V, T, or lambda junctions. "jp" refers to the junction point.

int	line 1 ID
int	line 2 ID
int	which line(s) jp is on (0 = neither, 3 = both)
int	0: jp closer to line 1 start, 1: jp closer to line 1 end
int	0: jp closer to line 2 start, 1: jp closer to line 2 end
float	jp column
float	jp row
float	quality of junction