MATLAB: Implementing your own function in a simulink model

Question

I have written a simple color filter function in MATLAB 2010a. I am trying to create a Simulink model where I can pass live video through this function so that I can see only the color blue, however I never seem to find the right block for user defined functions. I have tried the Embedded MATLAB function, but it never seems to work and I don't think it is for what I am trying to do. I have tried the function block, but that only takes a one dimensional input, video has three. The other option is s-functions, but I don't know if that is too complicated for what I am trying to do. I would appreciate it if someone could point me in the right direction.

Thanks,

Roshan

Answer 1

Look at examples like the penddemo, inside the animation subsystem (look under mask) there's one s-function block that interacts with the simulation, the code for it is implemented on just one m file (s-function parameters), maybe you can do the same.