mimas::pol

mimas::pol Class Reference

Pairs Of Lines tool. More...

#include <pol.h>

Inheritance diagram for mimas::pol:

[legend]Collaboration diagram for mimas::pol:


Static Protected Attributes
static int	num_abins
	just common vars here. how many distinct angles can be measured?
static double	min_len
	minimum length of line which should be considered
static double	len_error
	lengths can be measured to +- this value
static double	min_angle_diff
	parallel lines dont contribute much info. what angles will we consider?
static double	max_angle_diff
	parallel lines dont contribute much info. what angles will we consider?
static double	max_scale
	for the scale invariant version
static double	min_scale
	for the scale invariant version

Detailed Description

Pairs Of Lines tool.

Another shape-based object recognition tool. Original back-of-beer-mat algorithm by stumeikle. pairwise will be better if you have a lot of models, otherwise this is ok. simple matching of pairs of lines from a model(s) and a visual scene.

Algorithm goes as follows: (roughly) extract all possible pairs of lines from a model view. organise into table based on the angles between each pair.

Do the same for a visual scene. For each pair of lines in the visual scene decide if they could be any of the model pairs of lines. If it would be possible then make an entry into a 2D hough transform for the possible centroid position of the model. Continue until all scene pairs of lines have been considered. Extract peaks from the hough and there you go.

There's a bit of optimisation included and a novel hough transform is used to estimate the orientation of the found models in the scene.