How to pick random values in a vector
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Navya Snigdha Thumma
le 3 Oct 2015
Commenté : Navya Snigdha Thumma
le 3 Oct 2015
How to pick randomly intensities with non zero values in an image. I want to pick only two intensities. My answer should be (x1,y1) and (x2,y2) which are row and column values of particular image. Please help. Thanks.
0 commentaires
Réponse acceptée
Walter Roberson
le 3 Oct 2015
idx = find(YourImage ~= 0);
randidx = idx(randperm(length(idx),2));
[x, y] = ind2sub(size(YourImage), randidx);
x1 = x(1); x2 = x(2); y1 = y(1); y2 = y(2);
Caution: when you are talking about images, x is the column number, not the row number. I left it in the order you specified, but if you try to use it to plot with you will see that what you asked for is not the way it works.
Plus de réponses (0)
Voir également
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!