lines parallel with houghlines opencv+python

asked 2015-01-13 10:49:59 -0600

GUI
11 ●2 ●2

I need to know how draw lines parallel, I'm beginning with Opencv, please help. I use the houghlines function for detect lines, now I want detect lines parallel, I know that the ecuacion of a lines is y = k*x+b and two lines are parallel when k1 = k2. but how represent this in opencv with houghlines?

edit retag flag offensive close merge delete

Comments

Hi,you have found the answer to this question? if you find an answer you can share?

noiro ( 2016-12-15 15:09:30 -0600 )edit

add a comment

1 answer

Sort by » oldest newest most voted

answered 2015-01-13 11:03:51 -0600

Haris

3804 ●3 ●28 ●57

In another way,

Find the angle for each line using the equation

 double Angle = atan2(y2 - y1, x2 - x1) * 180.0 / CV_PI;

Compare angles for all detected lines to separate parallel lines.

edit flag offensive delete link

Comments

The comparison can be done by applying a K-means clustering on the resulting angles. As to the angles itself, x and y are two points on the line itself (for clarification)

StevenPuttemans ( 2015-01-14 02:45:39 -0600 )edit

if I use houghlinesP I can calculate m = (y2 - y1) / (x2 - x1) but I don't know how to compare between each item or pair of points (x1y1 and x2y2) of lines vector []. I trying with itertools.combination but I don't know how to do

GUI ( 2015-01-14 14:37:14 -0600 )edit

add a comment

Links

Question Tools

1 follower

Stats

Asked: 2015-01-13 10:49:59 -0600

Seen: 4,302 times

Last updated: Jan 13 '15

lines parallel with houghlines opencv+python edit

Comments

1 answer

Comments

Links

Question Tools

Stats

Related questions

lines parallel with houghlines opencv+python