Rotation Property of Discrete Fourier Transform for an image

版本 1.0.0 (1.2 KB) 作者: Sankirna D. Joge

image is rotated by some degree and its Spectrum is observed with respect to original image spectrum

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更新时间 2020/8/27

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Rotation property tells that if the image in the spatial domain is rotated by some amount then its spectrum which is obtained by DFT is also rotated by same amount. This is being showed with the example in .m file

f(m.n) as f(rcos θ,rsin𝝷)
Then DFT [f(rcos (θ+α),rsin (𝝷+𝞪)] = F [R cos (θ+α),R sin(𝝷+𝞪)]

引用格式

Sankirna D. Joge (2024). Rotation Property of Discrete Fourier Transform for an image (https://www.mathworks.com/matlabcentral/fileexchange/79598-rotation-property-of-discrete-fourier-transform-for-an-image), MATLAB Central File Exchange. 检索来源 2024/8/25.