Imaging control apparatus, imaging apparatus, and recording medium

A non-transitory computer readable medium storing an imaging control program that causes a computer to execute:

• processing of converting a first image signal acquired at a first depth, a second image signal acquired at a second depth that is deeper than the first depth, and a third image signal acquired at a third depth that is shallower than the first depth into a first luminance signal, a second luminance signal, and a third luminance signal, respectively;
• processing of calculating a first signal, a second signal and a third signal about an amount of blur or high frequency signal, which are related to an edge, based on the first luminance signal, the second luminance signal, and the third luminance signal, respectively;
• processing of expanding the calculated first signal, the calculated second signal, and the calculated third signal respectively to first expanded signal data, second expanded signal data, and third expanded signal data, which are related to a peripheral edge pixel;
• processing of comparing the first expanded signal data, the second expanded signal data, and the third expanded signal data with each other;
• and
• processing of setting a back focus area based on a magnitude relation between the first expanded signal data and the second expanded signal data and setting a front focus area based on a magnitude relation between the first expanded signal data and the third expanded signal data to thereby control focus.

An imaging control method comprising:

• converting a first image signal acquired at a first depth, a second image signal acquired at a second depth that is deeper than the first depth, and a third image signal acquired at a third depth that is shallower than the first depth into a first luminance signal, a second luminance signal, and a third luminance signal, respectively;
• calculating a first signal, a second signal and a third signal about an amount of blur or high frequency signal, which are related to an edge, based on the first luminance signal, the second luminance signal, and the third luminance signal, respectively;
• expanding the calculated first signal, the calculated second signal, and the calculated third signal respectively to first expanded signal data, second expanded signal data, and third expanded signal data, which are related to a peripheral edge pixel;
• comparing the first expanded signal data, the second expanded signal data, and the third expanded signal data with each other;
• and
• setting a back focus area based on a magnitude relation between the first expanded signal data and the second expanded signal data and setting a front focus area based on a magnitude relation between the first expanded signal data and the third expanded signal data to thereby control focus.