But L/2 should be the sampling interval, which is fixed at 1 pixel. For example, a signal with a wavelength of 1 pixel (or 1/2 pixel) would be identical to a co

But L/2 should be the sampling interval, which is fixed at 1 pixel. For example, a signal with a wavelength of 1 pixel (or 1/2 pixel) would be identical to a constant signal.