Patent Document ID: 9235063
Application ID: 12957300
Patent Status: 1

Claim One:
1. A method, comprising: performing by a computer: receiving a plurality of images of a calibration target having a pre-determined geometric pattern of repeating patches, the plurality of images being configured to collectively cover an image field of a lens, the plurality of images including a first image with a first focal length and a second image with a second focal length that is different than the first focal length; determining changes in image blur with respect to the repeating patches indicative of a spatially variant blur pattern by at least estimating image blur for multiple patches of the pre-determined geometric pattern across the plurality of images of the calibration target, the image blur being estimated by at least: aligning each of the repeating patches with a mathematical definition of the calibration target; and based on said aligning, generating a plurality of blur kernels that describe blur associated with corresponding patches from the repeating patches; and based on the image blur that is estimated from the plurality of images, generating a lens model that represents the spatially variant blur pattern across the image field of the lens.