Ask Your Question
0

How to increase the thickness or darkness of edge after edge detection?

asked 2016-06-17 05:37:15 -0600

BaKa gravatar image

After using Laplacian operator for edge detection, i find that the edge is too thin, May i ask if there are ways to increase the thinkness or darkness in order to sharpen the edge detected?

Image after bitwise not operator:

image description

edit retag flag offensive close merge delete

Comments

You could try to compute the difference of gaussian, with different kernel size, you should be able to detect edges of different size.

Eduardo gravatar imageEduardo ( 2016-06-17 09:05:00 -0600 )edit

I am satisfy with the result of edge found for this kernel size, but what i want to do is just make the edge found more clearly shown

BaKa gravatar imageBaKa ( 2016-06-17 10:22:19 -0600 )edit

2 answers

Sort by ยป oldest newest most voted
2

answered 2016-06-17 10:19:25 -0600

Since your image has black edges against white background, you can try an erode operation which takes the minimum value of every block.

edit flag offensive delete link more
0

answered 2016-06-17 11:42:57 -0600

Sum_89 gravatar image

You can try dilating the image, worked pretty well on Canny edge detection results. Also remember it might amplify noise too

edit flag offensive delete link more

Question Tools

1 follower

Stats

Asked: 2016-06-17 05:37:15 -0600

Seen: 4,372 times

Last updated: Jun 17 '16