MATLAB Answers

How to find the difference (in pixels) between two boundaries/countours?

1 view (last 30 days)
I have this image in which I overlayed a greyscale image with its correspondent contour (green contour). I got the green contour from the morphological segmentation step. I overlayed the two contours to get visual validation on the effectiveness of my segmentation step. I want to know the difference in pixels between the greyscale contour that I will trace manualy and the green contour, so that I can know the total error of the segmentation process (in pixels)
Which tool can I use to achieve this?

  0 Comments

Sign in to comment.

Accepted Answer

KALYAN ACHARJYA
KALYAN ACHARJYA on 5 Jul 2020
You can do number of ways: (Considering the single pixel value, as both section has same pixel value, may have small different)
  1. Manually:
imtool('iamge_file_name');
Move the cursor, where you need the pixel value, it shows the image viewer at the bottom of the app. Note this and find the difference.
2. Authomatically: Using code (Assumed that your contours cover the mid section of the image)
data=imread('image_file_name');
[r c d]=size(data);
diff_pix=data(randi(r),1)-data(round(r/2),round(c/2));
Kalyan Acharjya 😊

  0 Comments

Sign in to comment.

More Answers (0)


Translated by