Signal & Image Processing Playground
Upload an image to test GPU-like filters, LSB Steganography, and 2D Fourier (FFT) analysis. Run completely in your browser with zero server CPU load!
✨ Visual Filters
🔐 Steganography (LSB)
Decoded Message:
🌌
No Image Loaded
Upload an image in the sidebar to start digital signal filtering operations.
Original
Output:
Filtering...
📊 2D Fourier (FFT) Magnitude Spectrum
Filter Radius:
Frequency Spectrum (Magnitude)
Center = Low frequencies. Outer edges = High frequencies. Circular overlay displays the filter radius.
💡 What is this?
This panel computes the 2D Fast Fourier Transform (FFT) of the uploaded image to decompose it into its spatial frequency components.
• Lowpass filter keeps the center (smooth transitions, blurry image, blocks noise).
• Highpass filter keeps the outer edges (detects lines/outlines, keeps sharp textures, blocks solid backgrounds).