An image processing apparatus includes a reference image signal outputting unit (27) that outputs a reference image signal in which color information of a plurality of colors is included in a chart image in a display plane or a time axis, a color display information detection unit that detects color display information of an image displayed on a displaying unit (25) based on the reference image signal, a profile generation unit (31) that generates a display characteristic profile of the displaying unit using the detected color display information and the color information of the chart image, a display characteristic correcting unit (35) that generates a color correction image signal obtained by correcting an image signal to be output which is input from a modality based on the display characteristic profile, and a standardization processing unit (37) that converts the generated color correction image signal to a standardization image signal.
