An image processing apparatus that corrects an image signal constituted by a plurality of color signals, includes a separation unit that separates the image signal into two or more subband signals; a selection unit that selects a correction processing subject color signal from the plurality of color signals; an S/N estimation unit that estimates an S/N ratio in relation to the subband signal of the color signal selected by the selection unit; a coefficient setting unit that sets a coefficient on the basis of the S/N ratio; and a correction unit that performs correction processing on the subband signal of the selected color signal by adding the subband signal of the correction processing subject color signal to the subband signal of another color signal not subject to the correction processing on the basis of the coefficient.