quantum-espresso/PP/examples/exx_interpolated_bands_example/pbe_fourier/fourier.in

&INTERPOLATION 
  method = 'fourier'
  miller_max = 7
/
ROUGHNESS
  3
  1.0d0  0.50d0  0.250d0 
K_POINTS tpiba_b
 5
  0.00  0.00  0.00 10
  1.00  0.00  0.00 10
  1.00  0.25  0.25 10
  0.50  0.50  0.50 10
  0.00  0.00  0.00 2