Shifting

Using the Fourier shift property one can implement shifting of arrays not only over pixel but also sub-pixel amount.

Examples

For full interactivity, have a look at this Pluto notebook.

begin
    f(x) = cos(4π * x / 30)
    x1 = 1:30
    x2 = x1 .+ 3
end

begin
    y1 = f.(x1)
    y2 = f.(x2)
    offset = 2.01
    y3 = shift(y2, tuple(offset))
end

begin
    plot(y1, label="Original signal")
    plot!(y2, label="Shifted signal")
    plot!(y3, label="Fourier shifted with $offset")
end

Function references

Missing docstring.

Missing docstring for FourierTools.shift. Check Documenter's build log for details.

Missing docstring.

Missing docstring for FourierTools.shift!. Check Documenter's build log for details.