Patent ID: 7545433
Filing Date: 2009-06-09
Classification: H04N

Abstract:
1. An image pickup apparatus comprising: a generating device that generates a signal indicative of a degree of focus of an optical system that forms a subject image on an image pickup device before and after shooting for recording an image representing a subject image in a recording medium; a correlation determining device that determines a correlation between the signal indicative of the degree of focus generated before the shooting and the signal indicative of the degree of focus generated after the shooting; and a blur determining device that determines whether the image is blurred according to a result of determination carried out by said correlation determining device, wherein said correlation determining device determines whether the correlation is lower than a first threshold value and higher than a second threshold value, and wherein said blur determining device determines that the image is blurred when said correlation determining device determines that the correlation is lower than the first threshold value and higher than the second threshold value.