Dermal image information processing device, dermal image information processing method, and program

1. A dermal image information processing device comprising:

a memory; and

a hardware component that reads data from the memory and performs:

acquiring dermal image information showing ridge lines in a papillary layer;

detecting a singular region caused by a surgical operation in the dermal image;

determining a type of the surgical operation that is a cause of generation of the singular region;

generating a repaired image showing ridge lines in a papillary layer prior to the surgical operation, based on the type of the surgical operation; and

collating the repaired image with a pre-registered dermal image.

2. The dermal image information processing device according to claim 1 , wherein

the ridge lines are ridge lines in the papillary layer of a finger, and

the hardware component performs:

detecting that the finger has undergone a surgical operation of swapping two regions of the finger;

specifying the two regions swapped through the surgical operation; and

generating the repaired image by mutually replacing the specified two parts.

3. The dermal image information processing device according to claim 1 , wherein

the ridge lines are ridge lines in the papillary layer of a finger, and

the hardware component performs:

detecting that the finger has undergone a surgical operation including removing a part of the finger and suturing a part around the removed part;

specifying the part removed through the surgical operation, based on pitches of the ridge lines; and

generating the repaired image showing the ridge lines except the removed part.

4. The dermal image information processing device according to claim 1 , wherein

the ridge lines are ridge lines in the papillary layer of a finger, and

the hardware component performs detecting that the finger has undergone the surgical operation, by detecting:

that a pattern of direction of the ridge lines shows a particular pattern; or

that pitches of the ridge lines satisfy a predetermined condition.

5. A dermal image information processing method comprising:

acquiring dermal image information showing ridge lines in a papillary layer;

detecting a singular region caused by a surgical operation;

determining a type of the surgical operation that is a cause of generation of the singular region;

generating a repaired image showing ridge lines in a papillary layer prior to the surgical operation, based on the type of the surgical operation; and

collating the repaired image with a pre-registered dermal image.

6. The dermal image information processing method according to claim 5 , wherein

the ridge lines are ridge lines in the papillary layer of a finger, and

the dermal image information processing method further comprises:

detecting that the finger has undergone a surgical operation of swapping two regions of the finger;

specifying the two regions swapped through the surgical operation; and

generating the repaired image by mutually replacing the specified two parts.

7. The dermal image information processing method according to claim 5 , wherein

the ridge lines are ridge lines in the papillary layer of a finger, and

the dermal image information processing method further comprises:

detecting that the finger has undergone a surgical operation including removing a part of the finger and suturing a part around the removed part;

specifying the part removed through the surgical operation, based on pitches of ridge lines; and

generating the repaired image showing the ridge lines except the removed part.

8. The dermal image information processing method according to claim 5 , wherein

the ridge lines are ridge lines in the papillary layer of a finger, and

the dermal image information processing method further comprises detecting that the finger has undergone the surgical operation, by detecting:

that a pattern of direction of the ridge lines shows a particular pattern; or

that pitches of the ridge lines satisfy a predetermined condition.

9. A non-transitory computer-readable storage medium storing a program that causes a computer to perform:

acquiring dermal image information showing ridge lines in a papillary layer;

detecting a singular region caused by a surgical operation;

determining a type of the surgical operation that is a cause of generation of the singular region;

generating a repaired image showing ridge lines in a papillary layer prior to the surgical operation, based on the type of the surgical operation; and

collating the repaired image with a pre-registered dermal image.

10. The storage medium according to claim 9 , wherein

the ridge lines are ridge lines in the papillary layer of a finger, and

the program further causes the computer to perform:

detecting that the finger has undergone a surgical operation of swapping two regions of the finger;

specifying the two regions swapped through the surgical operation; and

generating the repaired image by mutually replacing the specified two parts.

11. The storage medium according to claim 9 , wherein

the ridge lines are ridge lines in the papillary layer of a finger, and

the program further causes the computer to perform:

detecting that the finger has undergone a surgical operation including removing a part of the finger and suturing a part around the removed part;

specifying the part removed through the surgical operation, based on pitches of ridge lines; and

generating the repaired image showing the ridge lines except the removed part.

12. The storage medium according to claim 9 , wherein

the ridge lines are ridge lines in the papillary layer of a finger, and

the program further causes the computer to perform detecting that the finger has undergone the surgical operation, by detecting:

that a pattern of direction of the ridge lines shows a particular pattern; or

that pitches of the ridge lines satisfy a predetermined condition.