傅立葉變換IV 在二維空間裏理解及應用

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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: • https://thepythoncodingbook.com/2021/... •    • Image Filtering in Frequency Domain |...   •    • 106 - Image filters using discrete Fo...   •    • Image Compression and the FFT (Exampl...  

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