Spatially-modulated snapshot imaging polarimeter can encode four Stokes parameters(S_0, S_1, S_2 and S_3) into a single interferogram and allow the instantaneous measurement of polarization from a single snapshot. However, the reconstructed polarization information contains aliasing signal, and the reconstructed intensity images suffer low spatial resolution because of the crosstalk between high frequency components of the image and frequency domain filtering for the polarization channels. In this paper, we...