Patent ID: 9639922
Date: 2017-05-02
CPC Classifications: G06T

Claim:
1. A computer-implemented image processing method for correcting a deterioration of an image captured through an optical system using an image restoration filter (W) comprising: a step of calculating, through a fixed-point arithmetic, a frequency characteristic of the image restoration filter (W) so that a restoration gain value is set within a restoration gain limiting value (Gm) calculated based on a maximum value operable through the fixed-point arithmetic, a step of generating the image restoration filter (W) through a Fourier conversion of the frequency characteristic of the image restoration filter (W), and a step of correcting the deterioration of the image by applying the image restoration filter (W) to the image, wherein the restoration gain limiting value (Gm) is calculated by dividing a maximum value operable through the fixed-point arithmetic by a data point number of the image restoration filter (W).