output image from simulink and matlab code are different ??

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vijay sai 2014-4-1

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https://ww2.mathworks.cn/matlabcentral/answers/124032-output-image-from-simulink-and-matlab-code-are-different

评论： Ryan Livingston 2014-4-2

I have built a simulink model to do watershedding as apart of project. The output I get from the simulink function block is quite different from matlab code version of the same program. I am attaching the code I used for both matlab and simulink and their output images

if true
  % a=imread('medtest.png');
b=watershed(a);%%MATLAB CODE
d=imshow(b);
c=label2rgb(a);
figure
imshow(c);
end
if true%%WATERSHEDDING
  % function y = fcn(u)
% #codegen
coder.extrinsic('watershed','imshow','label2rgb','image');
y=zeros(size(u));
y = double(watershed(u));
image(y);
end
if true %%LABEL2RGB CODE
  % function z = fcn(u)
coder.extrinsic('imshow','label2rgb');
% z=0;
z=zeros(size(u,1),size(u,2),3);
z = double(label2rgb(u));
imshow(z)
end

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Ryan Livingston 2014-4-2

Could you please describe the code a bit more? The top block is your code in MATLAB and the bottom two are in the Function Block, or is it something else?

Also, from the model shown, it appears that only the watershedding code is in the function block. Is that the case?

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