Slick Engineering & Consulting
Harmonic Detective
A real-time 2D Fourier Transform (FFT) workbench for images — iPad and Mac.
Load an image, see its frequency spectrum, draw a Region of Interest directly on that spectrum, and scale or extract exactly the frequencies you selected. Built for periodic-noise removal, pattern and texture isolation, moiré and halftone analysis, and frequency-domain feature extraction.
Everything runs on-device. No account, no sign-in, no internet connection, no data collection.