Hello guys. I have an RGB image i separated the channels. Now I need to apply noise. Gaussian white noise, uniform white noise, periodic random noise. I have built in functions for those noises. Do I need to multiply them with picture to get the noisy image?

 

What sorts of values do you get from those functions? If, by "separating" the channels, you mean you have sequestered each signal intensity into a separate value, how might you expect the noise to affect those values? What is the noise source supposed to be - is it in transmission of the composite signal, or due to random events in the image generation?

What are the limits that any of the R, G, &B values can be altered by the noise?

 

No onqun you just want to do simple addition, though you would want to use an adjustable multiplier to allow you to control how much noise is applied to the image. 1 would be complete noise (no image at all) .01 would be 1% noise

 

Hello,

What program do you use to apply the noise?

If you want to "play" with noise on an image, you could take a look at the image manipulation program GIMP.

http://www.gimp.org/

It is totaly free and available for all kinds of operating systems.

Bertus

 

Thank you for your replies. I am using labview