how can i filter a RGB without using imfilter,conv,conv2 or similar?

hi guys,

i have to create a function which has 2 inputs (one for image ,one for kernel which is [5 5]) and for the pixels from outside the original image must be [0,0,0]

ps : no conv, conv2, imfilter or similar

TO be clear : the code must be something in it but i dont know how i do that

function [result] = evc_filter(I, kernel)
    result = I;
end

[Leo Meditz]

Have you figured it out? I have the same problem

Answer 1

[Walter Roberson]

http://www.mathworks.com/help/matlab/ref/conv.html#buc311j-4

Answer 2

[Image Analyst]

See my attached manual convolution script.

[Leo Meditz]

Thanks for the fast reply. The skript is pretty large and I'm a beginner. how do i find the thing i'm searching for?

[Image Analyst]

The beginning stuff is just asking the user for the image and the window size. The main part is where it says:

%=================================================================================================
% HERE IS THE MAIN COMPUTATION ENGINE OF THE WHOLE PROCESS:

That's where the 4-deep nested for loop is.

I think it's very well commented. If you disagree, tell me what parts need more explanation.