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1. (WO2017034784) DEFOCUS ESTIMATION FROM SINGLE IMAGE BASED ON LAPLACIAN OF GAUSSIAN APPROXIMATION

Pub. No.:    WO/2017/034784    International Application No.:    PCT/US2016/045841
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Sat Aug 06 01:59:59 CEST 2016
IPC: G06K 9/36
G06K 9/40
G06T 5/00
Applicants: SONY CORPORATION
Inventors: LI, Pingshan
WEI, Jianing
Title: DEFOCUS ESTIMATION FROM SINGLE IMAGE BASED ON LAPLACIAN OF GAUSSIAN APPROXIMATION
Abstract:
A defocus estimation algorithm is described herein. The defocus estimation algorithm utilizes a single image. A Laplacian of Gaussian approximation is determined by computing a difference of Gaussian. Defocus blur is able to be estimated by computing a blur difference between two images using the difference of Gaussian.