How can I vectorize the following code?
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Ba Ba Black Sheep!
el 28 de Jul. de 2017
Comentada: Image Analyst
el 29 de Jul. de 2017
main.m
I = imread('bear.png');
J = rgb2gray(imread('marked_bear.png'));
mask = I-J;
for r=1:size(I,1)
for c=1:size(I,2)
if(mask(r,c))
I = some_function(I, r, c);
end
end
end
imshow(I);
some_function.m
function I = some_function(I, r, c)
% some processing on image 'I'
I(r,c) = 255;
bear.png
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/166387/image.png)
marked_bear.png
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/166388/image.png)
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Image Analyst
el 28 de Jul. de 2017
Like this:
I = imread('bear.png');
J = rgb2gray(imread('marked_bear.png'));
mask = I-J; % Weird, but okay...whatever.
I(mask~=0)=255;
4 comentarios
Image Analyst
el 29 de Jul. de 2017
OK, then...
function I = some_function(I, J)
mask = I - J;
I(mask ~= 0) = 255;
There. It's vectorized, still has a function, and that function is called "some_function" (instead of MaskI as I had called it), just like you asked for.
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