High-res: 800x800
Mathematica code:
f[x_, y_] := {Log[Sqrt[x^2 + y^2]], ArcTan[x, y]}
ImageTransformation[
ImageCrop[
DensityPlot[
Sin[84.74*Abs[(x + I y)^2]],
{x, -10, 10}, {y, -10, 10},
PlotPoints -> 35, Mesh -> False, Frame -> False,
ColorFunction -> Hue, ImageSize -> 834],
800],
f[#[[1]], #[[2]]] &, DataRange -> {{-Pi, Pi}, {-Pi, Pi}}]