spread_dft_analysis
Analyze DFT magnitude spectrum of pixel values to detect hidden signals, unusual peaks, or spectral flatness anomalies indicating spread spectrum steganography.
Instructions
DFT magnitude spectrum analysis for spread spectrum steganography detection. Computes the Discrete Fourier Transform of pixel values and analyzes the frequency spectrum for hidden signals, unusual peaks, or spectral flatness anomalies that indicate spread spectrum embedding.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| channel | No | Color channel to analyze: 0=R, 1=G, 2=B (default: 0) | |
| file_path | Yes | Path to image file (PNG or JPEG) for DFT analysis |