1. A method for reducing an occlusion in an image, comprising: providing image information from a first image taken from a light field camera; analyzing image information from multiple sub-aperture images extracted from the image information of the first image to separate foreground and background appearance information by using parallax between the sub-aperture images to determine which elements of a sub-aperture image are in the foreground and which are in the background; creating a mask of an occlusion based on the separated foreground and background appearance information; and rendering a second, modified image where the mask has been applied to reduce the occlusion in the modified image.