reverse transformation for scale up 2 times for rows and 1.6 times for columns(a image), don't use MATLAB or any other build-in functions imwarp

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Zhiyang Sun
Zhiyang Sun 2021-9-11
回答： Swetha Polemoni 2021-9-16
first time use matlab to code, can anyone tell me how to use inv(T) to inverse image matrix without imwrap.
like:
inp=imread('cat,jpg');
figure, imshow(inp);axis on
[M,N]=size(inp);
T=[2,0,0;0,1.6,0;0,0,1];
Tinv=inv(T);
is this right? and I don't know how to continue, please help meQAQ.

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回答（1 个）

Swetha Polemoni
Swetha Polemoni 2021-9-16
Hi
Inverse of matrix can be found by inv. It is my understanding that you want to find the inverse of your image 'inp'. The following code snippet might help you.
inp = imread('cat.jpg');
imageInverse = inv(inp);

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