calculating the area inside boundary

2 vues (au cours des 30 derniers jours)
Farzin
Farzin le 22 Déc 2016
Réponse apportée : Image Analyst le 22 Déc 2016
Hi,
I am trying to find the number of pixels inside the boundary where I have the boundary points coordinates only.
actually I want to calculate the area inside the boundary. I need some help.
  2 commentaires
David Barry
David Barry le 22 Déc 2016
Please remove the code formatting from your question and upload some example data/code.
Image Analyst
Image Analyst le 22 Déc 2016
No, you didn't. Read this link

Connectez-vous pour commenter.

Connectez-vous pour répondre à cette question.

Réponse acceptée

Image Analyst
Image Analyst le 22 Déc 2016
Use polyarea:
area = polyarea(xCoordinates, yCoordinates);

Plus de réponses (1)

Image Analyst
Image Analyst le 22 Déc 2016
If you have a binary image of the perimeter/boundary, you can fill it and call bwarea() or sum()
binaryImage = imfill(boundaryImage, 'holes');
area1 = sum(binaryImage(:))
area2 = bwarea(binaryImage)

Catégories

En savoir plus sur Elementary Polygons dans Help Center et File Exchange

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by