Image processing apparatus, image processing method, image pickup apparatus, and display device

An image processing apparatus comprising:

• a first generation unit which generates at least a first parallactic image, a second parallactic image, and a third parallactic image, wherein the first parallactic image, the second parallactic image, and the third parallactic image each corresponds to each image formed by light passing through different pupil areas;
• a second generation unit which generates a first interpolation image which is based on the first parallactic image and the second parallactic image, and generates a second interpolation image which is based on the second parallactic image and the third parallactic image;
• and
• an output unit which outputs the first parallactic image, the first interpolation image, the second parallactic image, the second interpolation image and the third parallactic image in order, wherein the parallax between the first parallactic image and second parallactic image is smaller than the parallax between the first parallactic image and the third parallactic image.

A control method of an image processing apparatus, comprising the steps of:

• generating at least a first parallactic image, a second parallactic image, and a third parallactic image, wherein the first parallactic image, the second parallactic image, and the third parallactic image each corresponds to each image formed by light passing through different pupil areas;
• generating a first interpolation image which is based on the first parallactic image and the second parallactic image, and generating a second interpolation image which is based on the second parallactic image and the third parallactic image;
• and
• outputting the first parallactic image, the first interpolation image, the second parallactic image, the second interpolation image, and the third parallactic image in order, wherein the parallax between the first parallactic image and the second parallactic image is smaller than the parallax between the first parallactic image and the third parallactic image.