CAMERA SHAKE DIRECTION JUDGING METHOD, CAMERA SHAKE DEGREE JUDGING METHOD, AND PROGRAM USED THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a program with which a direction of camera shake is accurately judged at low computation costs, and to accurately judge a degree of camera shake.;SOLUTION: Horizontal and vertical edge gradient images are created using luminance of a photographed image (S110), and an edge strength E(n) is computed for each of judging angles θn within a half circle angle range [0, π]. A judging angle θmax is then determined at which a sum (average strength deviation DEV) of deviations for an edge strength average μ of all the range of a first edge strength average μ1 with a quarter circle Q1 as a range with the judging angle θn as a starting point in the half circle angle range and a second edge strength average μ2 with a remaining quarter circle Q2 as a range becomes maximum (S130-S160), and an angle bisecting the quarter circle corresponding to smaller one of the first edge strength average μ1 (max) and the second edge strength average μ2 (max) is defined as a camera shake direction angle θm (S170-S190).;COPYRIGHT: (C)2006,JPO&NCIPI