implementation of median filtre on FPGA ?

Hi everyone, I want to design the median filter on FPGA. I got the output for median filter in matlab and also in matlab simulink. i tried to convert the matlab code to HDL code with HDL coder. but i found alwais this error '' Found unsupported dynamic matrix type at output port: 0, name 'im_med', in the file/function MedFiltre_fixpt " .someone can help me ?

function [im_med] = MedFiltre(J,n,M,N)

Img=zeros(N,M);

for i = 1:M

for j = 1:N

pixel_val = J((i-1)*N + j); % Récupérer la valeur du pixel correspondant dans le vecteur

Img(j,i) = pixel_val; % Copier la valeur du pixel dans la matrice carrée

end

end

p=(n-1)/2;

im_med=zeros(N,M);

im_med = coder.nullcopy(zeros(N, M));

for i=p+1:M-p

for j=p+1:N-p

img0=Img(i-p:i+p,j-p:j+p);

V0=img0(:);

V1=sort(V0);

Im=round(n*n/2);

med=V1(Im);

im_med(i,j)= med;

end

end

%im_med=im_med(:);

end

Answer 1

[Bharath Venkataraman]

You could use the Median Filter block or the visionhdl.MedianFilter System object in Vision HDL Toolbox, which offer this capability.

[soukaina]

thank you