Line filtering
Hold click and drag the mouse to draw a shape. Try to make a loop as the Fourier transform will assume that first and last points are connected.
Quality :
- Reset : delete all points and clear screen
- Blank : clear screen
- Draw points : redraw points
- Draw : draw raw curve
- Draw FT : draw filtered curve depending on quality
- Quality can go from 0 (worse) to 100 (best).