how to detect yellow colour in matlab ? please help me with the coding !!!

I am working on a project of fire alarm system using matlab but i am new on matlab !

Answer 1

[Image Analyst]

I have three color segmentation demos in my File Exchange, any of which could do this: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862

In fact one of them already does yellow right out of the box.