1. A method of generating a magnetic resonance image by using a radio frequency (RF) multi-coil including a plurality of coils, the method comprising: generating pieces of first interpolation data by interpolating pieces of data obtained from each of the plurality of coils; generating weighted data sets by weighting the pieces of first interpolation data with respect to a plurality of frequency bands; and obtaining the magnetic resonance image corresponding to a subject by using the weighted data sets, the obtaining the magnetic resonance image comprising: generating pieces of a second interpolation data set by interpolating pieces of at least one of the weighted data sets corresponding to one of the plurality of frequency bands; obtaining a plurality of reconstructed images corresponding to the plurality of coils by performing a weighted combination on at least one of the weighted data sets and the second interpolation data set; and obtaining the magnetic resonance image by using the plurality of reconstructed images.