I can't click Adjust contrast in imtool??

Hi, I imported a picture from my matlab workspace to the imtool. I want to adjust the contrast of the picture but I can't click the adjust contrast button. The situation is the same, no matter which picture I open, from workspace of directly from a file. Any idea what I'm missing?

Thanks, Rok

Answer 1

[Image Analyst]

Your image is color. Sorry, but there's no capability to adjust brightness and contrast on a color image in imtool() like there is in Photoshop.

[kiattisak kongkhiaw]

But I can't use it. By the way, I try to use it, and it doesn't work .

P.S. I used a monochrome picture.

[Image Analyst]

grayImage = imread(filename);
imtool(grayImage);

If that doesn't work, attach your image and script.

[kiattisak kongkhiaw]

thanks a lot

[Image Analyst]

You forgot to attach the picture, so I can't help you yet. Please attach it if you're still having trouble.

Answer 2

[Rok Paladin]

ah, of course. The only way is to open only one channel (RGB). Totaly slipped my mind. Thanks.