Collation system

1. A collation method comprising:

acquiring a first captured image that is a captured image of a pre-passage side area with respect to a gate, a capturing direction of the first captured image being a horizontal direction;

acquiring a second captured image that is a captured image of an area including at least a part of the pre-passage side area, a capturing direction of the second captured image being the horizontal direction;

determining a collation target on which a collation process is performed, on a basis of a target located in a first area of the first captured image and a target located in a second area of the second captured image;

setting the first area of the first captured image and the second area of the second captured image, on a basis of the target in the first captured image and the target in the second captured image acquired at a timing when the target is located in the first captured image; and

using the second captured image in the collation process between a previously registered target and a target included in the first captured image.

2. The collation method according to claim 1 , further comprising

when the target located in the first area of the first captured image is also located in the second area of the second captured image at a timing when the target is located in the first area, excluding the target located in the first area of the first captured image from the collation target.

3. The collation method according to claim 2 , further comprising

when determining that the target located in the first area of the first captured image is also located in the second area of the second captured image on a basis of a feature amount of the target located in the first area of the first captured image and a feature amount of the target located in the second area of the second captured image, excluding the target located in the first area of the first captured image from the collation target.

4. The collation method according to claim 3 , further comprising

when determining that the target located in the first area of the first captured image is also located in the second area of the second captured image on a basis of an inter-eye distance of a person who is the target located in the first area of the first captured image and an inter-eye distance of a person who is the target located in the second area of the second captured image, excluding the target located in the first area of the first captured image from the collation target.

5. The collation method according to claim 1 , further comprising

when the target in the first captured image and the target in the second captured image acquired at a timing when the target is located in the first captured image are identical, on a basis of a position of the target in the first captured image and a position of the target in the second captured image, setting a periphery of the position of the target in the first captured image as the first area and setting a periphery of the position of the target in the second captured image as the second area.

6. An information processing device comprising:

at least one memory configured to store instructions; and

at least one processor configured to execute instructions to:

acquire a first captured image that is a captured image of a pre-passage side area with respect to a gate, a capturing direction of the first captured image being a horizontal direction;

acquire a second captured image that is a captured image of an area including at least a part of the pre-passage side area, a capturing direction of the second captured image being the horizontal direction;

determine a collation target on which a collation process is performed, on a basis of a target located in a first area of the first captured image and a target located in a second area of the second captured image;

set the first area of the first captured image and the second area of the second captured image, on a basis of the target in the first captured image and the target in the second captured image acquired at a timing when the target is located in the first captured image; and

use the second captured image in the collation process between a previously registered target and a target included in the first captured image.

7. A non-transitory computer-readable storage medium storing thereon a program comprising instructions for causing an information processing device to execute processing to:

acquire a first captured image that is a captured image of a pre-passage side area with respect to a gate, a capturing direction of the first captured image being a horizontal direction;

acquire a second captured image that is a captured image of an area including at least a part of the pre-passage side area, a capturing direction of the second captured image being the horizontal direction;

determine a collation target on which a collation process is performed, on a basis of a target located in a first area of the first captured image and a target located in a second area of the second captured image;

set the first area of the first captured image and the second area of the second captured image, on a basis of the target in the first captured image and the target in the second captured image acquired at a timing when the target is located in the first captured image; and

use the second captured image in the collation process between a previously registered target and a target included in the first captured image.