Fourier Transform in 2D
Gratings - 3D surface plot - 2D FFT, 2π / λ *x
Gratings - Image - FFT Decompose basic functions (Sin, Cos)
Applications:
a. Pattern recognition
b. High Pass Filter - Edge detection
c. Low Pass Filter - blur, noise reduction
d. Gaussian Filter - Smooth, reduce artifacts
e. Hybrid filter, Combine image
f. Image compression
References:
thepythoncodin...
• Image Filtering in Fre...
• 106 - Image filters us...
• Image Compression and ...
Негізгі бет 傅立葉變換IV 在二維空間裏理解及應用
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