To provide an image processing apparatus and an image processing method for enhancing the resolution of an imaging signal by using a luminance component signal.

The image processing apparatus includes; a luminance image generating means 15 for receiving a medium tone image signal D14 generated from a first G image signal D11, a first R image signal D12, and a first B image signal D13 to generate a luminance image signal D15; a second G image generating means 16 for generating a second G image signal D16 from a digital imaging signal D1 and the luminance image signal D15; a second R image generating means 17 for generating a second R image signal D17 from the digital imaging signal D1 and the second G image signal D16; and a second B image generating means 18 for generating a second R image signal D18 from the digital imaging signal D1 and a second B image signal D18.