Fourier Transform via Time-Domain Sampling
Performing Fourier transform on time-domain sampled signals to display waveforms in both time and frequency domains, with emphasis on sampling parameters and frequency analysis implementation
Fourier Transform Profilometry for Stripe Projection
Fourier Transform Profilometry - Algorithm Explanation and Implementation Approaches
MATLAB Code Implementation with Image Descriptions
Image descriptions: A: Spectrum after Fourier transform; B: Spectrum after notch filter application; C: Filtered image after inverse transform (results not optimal). Ifft2: To validate the custom FFT program's correctness, used MATLAB's built-in ifft2 function for inverse transformation - output matches original image, confirming proper FFT implementation.
Spectral Subtraction for Speech Enhancement
Load speech file, generate random noise, synthesize noisy speech signal, and define parameter settings. Step 2: Frame segmentation with 50% overlap. Step 3: Apply Hamming window and perform Fourier transform to obtain power spectrum and phase spectrum. Step 4: Execute magnitude spectral subtraction and use the noisy speech phase for signal resynthesis via inverse Fourier transform. Step 5: Remove Hamming window to obtain enhanced speech signal. Step 6: Calculate SNR before and after enhancement.
Fourier Transform
Discrete Fourier Transform Implementation for Two-Dimensional Data
Harmonic Analysis Using Fourier Transform with Code Implementation Examples
Several MATLAB/Python code examples demonstrating harmonic analysis through Fourier transform. Includes detailed transformation processes with algorithm explanations, ideal for beginners wanting to understand underlying principles and implementation approaches.
Image Registration Using Fourier-Mellin Transform
Robust image registration resistant to rotation, translation and scaling using Fourier-Mellin transform with phase correlation implementation
Fourier Transform-Based Method for Removing Image Textures
An approach for eliminating image textures using Fourier Transform by removing high-frequency components while preserving low-frequency information, with implementation details including frequency domain filtering and spectral analysis.
Two-Dimensional Power Spectral Density Calculation Program
Two-Dimensional Power Spectral Density Calculation Program Using Fourier Transform with Implementation Details
MRI K-Space Data Processing: Central Adjustment and Fourier Transform for Image Reconstruction
Implementation of MRI k-space data reading, center adjustment, and Fourier transform for medical image reconstruction