Image processor and image processing method

An image processor comprising:

• an image acquisition unit to acquire a plurality of image data obtained by imaging an identical subject and its background from different positions;
• a distance estimator to estimate a distance from a reference position to predetermined pixels in a common image included in all of the image data;
• a threshold value determining unit to determine a threshold value of the distance to separate the common image into a foreground image including at least a part of the subject and a background image;
• a foreground/background separator to separate the common image in each of the image data into the foreground image and the background image based on the threshold value;
• a image clipping unit to generate a partial background image by clipping each of the image data to include a part of the background image;
• a image enlarger to generate an enlarged partial background image from each of the image data by enlarging the partial background image;
• a occlusion interpolator to generate an interpolated occlusion image by interpolating lacking pixels in an enlarged partial background image having the smallest number of pixels lacking due to the corresponding foreground image;
• and
• a composite image generator to generate a composite image based on the foreground image and the interpolated occlusion image.