IMAGE REFOCUSING FOR CAMERA ARRAYS

摘要

Techniques related to image refocusing for camera arrays using a space variant filter based on a pixel by pixel blur level associated with a difference between a reference image and a basic refocused image are discussed. Such techniques may include taking the difference between the reference image and the basic refocused image and applying a space variant filter to the basic refocused image to generate a final refocused image having a region of increased blur with respect to the all in focus reference image. The blur level implemented by the space variant filter may be based on the difference and, optionally, the reference image noise level and the reference image gradient.

主权项

1. A computer-implemented method for providing image refocusing comprising:
determining an all in focus reference image and generating a basic refocused image based on a plurality of images received via a camera array; taking a difference of the all in focus reference image and the basic refocused image to generate a difference image; and applying a space variant filter based at least in part on the difference image to the basic refocused image to generate a final refocused image having a region of increased blur with respect to the all in focus reference image.