Change colormap image processing

7 vues (au cours des 30 derniers jours)
Ashray Malhotra
Ashray Malhotra le 13 Août 2014
I need a 256 intensity colormap, for which I am using the following code.
colormap(gray(256));
But when I print out the cmap using
cmap = colormap;
I still get 64*3 double instead of a 256*3 value. What am I doing wrong?

Réponse acceptée

Yu Jiang
Yu Jiang le 13 Août 2014
Hi Ashray
Can you try executing the following command in MATLAB
>> set(gcf, renderer, opengl).
and see if it works?
This command changes your renderer to opengl.
If it does not work, could you let me know which release of MATLAB you are using? What is your operating system?
-Yu Jiang

Plus de réponses (1)

Joseph Cheng
Joseph Cheng le 13 Août 2014
I would check to see if the figure is still open, or is the active figure. is the cmap = colormap; directly after you create the figure? if you're confident that the figure is being displayed with a 256 grayscale then why not save the cmap when you do the colormap(gray(256))?

Catégories

En savoir plus sur Colormaps 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!

Translated by