How can I paint a list of pixels in a matlab image?
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I'm working with a lot of images here and I have to find all the pixels above a scalar value and paint all them into any color.
I've all the indexes of this pixels but I don't know how can I paint them now...
Thx for the help again.
1 commentaire
Jan
le 16 Jan 2012
In which format are the "images" represented? Printed on paper, as JPEGs on the harddisk or as arrays in Matlab? What does "paint all of them in any color" exactly mean?
Réponse acceptée
Image Analyst
le 16 Jan 2012
Here's the way to do it without using slow loops:
grayImage = imread('coins.png');
subplot(2,2,1);
imshow(grayImage);
binaryImage = uint8(255 * ~(grayImage > 150));
subplot(2,2,2);
imshow(binaryImage, []);
uniformImage = uint8(255 * ones(size(grayImage)));
zeroImage = uint8(255 * zeros(size(grayImage)));
rgbImage = cat(3, uniformImage, binaryImage, zeroImage);
subplot(2,2,3);
imshow(rgbImage);
0 commentaires
Plus de réponses (2)
Voir également
Catégories
En savoir plus sur Image Processing Toolbox dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!