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image rotation along x and y axis using bilinear interpolation

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Kritika 2015-2-4

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https://ww2.mathworks.cn/matlabcentral/answers/174991-image-rotation-along-x-and-y-axis-using-bilinear-interpolation

评论： Kritika 2015-2-5

test.m

I am rotating the image by theta1 along x axis and theta2 along y axis using the mapping equation: f(x,y)=f([cos(theta1)*x+sin(theta1)*y]/cos(theta1-theta2),[-sin(theta2)*x+cos(theta2)*y]/cos(theta1-theta2)). Now I am facing two problems here: 1. if theta1 and theta2 are taken different then image gets cropped. So, how to set the size of output that no matter what you take as theta1 and theta2, the complete image is obtained. 2. How to re-rotate the above result to get the intial image again using bilinear interpolation.

I am enclosing the code, Please do help me.

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Image Analyst 2015-2-4

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https://ww2.mathworks.cn/matlabcentral/answers/174991-image-rotation-along-x-and-y-axis-using-bilinear-interpolation#answer_166886

Why reinvent the wheel? Just use imresize(). It has a bilinear option.

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Image Analyst 2015-2-5

在 MATLAB Online 中打开

rotatedImage = imrotate(originalImage, 30); % Rotate 30 degrees.

Kritika 2015-2-5

I got it, but what if I have to rotate y axis with different angle?

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