DEPTH CALCULATION DEVICE, IMAGING APPARATUS, AND DEPTH CALCULATION METHOD

摘要

A depth calculation device for calculating depth information on an object from captured first image and second image with different blur, the depth calculation device comprising: an extraction unit configured to extract a first frequency component and a second frequency component from each of the first image and the second image, the first frequency component being a component of a first frequency band, the second frequency component being a component of a second frequency band, the second frequency band being lower than the first frequency band; and a depth calculation unit configured to calculate the depth information from the frequency components extracted by the extraction unit.

主权项

1. A depth calculation device for calculating depth information on an object from captured first image and second image with different blur,
the depth calculation device comprising: an extraction unit configured to extract a first frequency component and a second frequency component from each of the first image and the second image, the first frequency component being a component of a first frequency band, the second frequency component being a component of a second frequency band, the second frequency band being lower than the first frequency band; and a depth calculation unit configured to calculate the depth information from the frequency components extracted by the extraction unit, wherein the depth calculation unit includes: a first depth-dependent value calculation unit configured to calculate a first depth-dependent value from a difference in blur between the first frequency component of the first image and the first frequency component of the second image; a second depth-dependent value calculation unit configured to calculate a second depth-dependent value from a difference in blur between the second frequency component of the first image and the second frequency component of the second image; and a depth information calculation unit configured to calculate the depth information on the basis of the first depth-dependent value and the second depth-dependent value.