Efficient way to set specific range of pixels to zero.
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Ivan Shorokhov
le 23 Avr 2015
Commenté : Ivan Shorokhov
le 24 Avr 2015
Hello everybody,
I have gray image with pixels from 0 to 255. And I would like to set pixel from 90 to 100 to zero.
I've wrote following code:
new_gray=gray;
new_gray(gray>90&gray<100) = 255;figure;imshow(new_gray);
And it seems to be working fine, but I'm wondering, if there are any other ways of doing it?
Thanks in advance.
0 commentaires
Réponse acceptée
Image Analyst
le 23 Avr 2015
You could use intlut(). Something like
lut = gray(256);
% Make gray levels 91 through 99 be 0
lut(92:100) ;
new_gray = intlut(grayImage, lut);
DON'T name your image gray. That is the name of a built-in function that creates a colormap.
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Red dans Help Center et File Exchange
Produits
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!