Patent ID: 9661302
Date: 2017-05-23
CPC Classifications: G06T,H04N

Claim:
1. A depth information acquisition apparatus that acquires depth information of a subject by using two real space images, each having a different blur value, that are obtained by capturing a subject with different imaging parameters, the apparatus comprising: (A) at least one processor; and (B) at least one memory storing instructions that, when executed by the processor, cause the processor to perform the steps of: (a) converting the two real space images into two frequency space images, the frequency space images each having a frequency comprising at least one frequency ingredient and an amplitude; (b) generating a frequency space phase image for each of the frequency space images by dividing each frequency ingredient by the amplitude of each respective frequency space image, each frequency space phase image using a frequency; (c) calculating frequency space correlation value information representing a correlation value for each frequency between the frequencies of the two frequency space phase images; (d) converting the frequency space correlation value information into real space correlation value information, the real space correlation value information having a peak maximum value; and (e) acquiring the depth information, based on the peak maximum value of the real space correlation value information.