2D Fourier transform of pixels

The video shows how the 2D Fourier transform is affected when the number of pixel is changed in a given image. The text is added post transformation.

The patterns are made using Pixel Art Maker [1];
The Fourier transforms are made using ImageJ [2] and slightly adjusted in Adobe Lightroom [3];
The stills are combined into av video using Diptic [4] and Zeitraffer [5];