HIGH-QUALITY POST-RENDERING DEPTH BLUR

The present invention may provide techniques for blurring an image. The image may be a light field image with color values and depth values for each pixel. The method may include retrieving the image and calculating a blurred color value of a subject pixel of the image. Calculating the blurred color value may include calculating first and second circles of confusion proximate coordinates of the subject pixel for a first depth and second depth greater than the first depth. Color values may be retrieved for first and second sets of pixels within the first and second circles of confusion with depth values proximate the first and second depths, respectively. The second set of pixels may not include pixels occluded by the first set of pixels. The blurred color value may be selected based on the color values of the first and second sets of pixels.