Fourier Camera
Point your camera at any scene and press Calculate. The tool converts the frame to greyscale then computes its 2D Fourier Transform — breaking the image into its frequency components. The inset shows the greyscale source image.
Bright spots near the centre represent low-frequency patterns (broad shapes). Bright spots near the edges represent high-frequency detail (sharp edges and textures).
On mobile, tap Calculate to open your camera or photo library.
Fourier Camera