I don't know how to convert imwarp function in matlab to simulink models(variable size matrix & output type problem)

HI, there.

I have a question regarding MATLAB function to Simulink. if you guys give me small tips, then i really thankful to you.

Now, i'm going to convert matlab function (imwarp) to simulink and i'm using matlab function blocks.

In that fuction block, i have to write codes in MATLAB.

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my code is here,

function dst_img = warp(src_img)
  % moving point
  Pimg = [1,  1  ;
          640,1  ;
          266,330;   
          396,330];

    % moving point
    Pworld = [1,  1  ;
              640,1  ;
              1,  330;   
              640,330];

     Tform = fitgeotrans(Pimg, Pworld, 'projective');    % fitgeotrans(movingpoints, fixedpoints, transform type

     dst_img = double(imwarp(src_img,Tform));

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It's quite simple and it works well in matlab command window.

but if i stitch this function in 'Matlab function block' in simulink,

They give me some error as follow

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I heard that simulink is based on 'C' language

Every simulink block need to be fixed before start simulation.

I already know the size of output images (in matlab)

so I added some initializing part on the top of the code after function dst_img = warp(src_img)

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dst_img = double(zeros(332, 3165, 3));

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even I add some part to let them know the size of output, the same error also comes to me

what should I do to finish my work (converting imwarp matlab function to simulink block) ??

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and also i wonder about 'imwarp' function in image processing toolbox.

Is it possible to know the output size before operating impwarp function??

from now, I get the output size of imwarp manually in MATLAB command windows by running 'imwarp' function

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if you have similar experience with me, and if you overcome these tough time,

if you don't mind, plz let me know the way.

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Thank you for your reading.

I'll wait your answer.

bye

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