Patent ID: 8610801

Claim:
An image processing apparatus comprising: an image pickup circuit configured to perform photoelectric conversion on an optical image; and a chromatic aberration correcting circuit configured to calculate an amount of shift by chromatic aberration, based on a linear function to perform chromatic aberration correction on captured image data in a quadrangular area in accordance with the amount of shift, wherein the chromatic aberration correcting circuit performs the chromatic aberration correction on a first pixel in a first area including an optical center of the captured image data with a first linear function using a distance from the optical center and performs the chromatic aberration correction on a second pixel in a second area that does not include the optical center and that is different from the first area with a second linear function using the distance from the optical center, wherein the chromatic aberration correcting circuit performs the chromatic aberration correction in each quadrant around the optical center using the first linear function if the sum of a horizontal distance and a vertical distance from the optical center to the first pixel is smaller than a given threshold value and using the second linear function if the sum of the horizontal distance and the vertical distance is substantially equal to or larger than the given threshold value, wherein the second area in which the second linear function is used includes only four areas each of which is provided at a respective corner of the quadrangular area and each of the four areas has a substantially equal shape.