Verification system, verification method, and information storage medium
AssigneeRakuten Group, Inc.
InventorYeongnam CHAE
Life of this patent
Estimating the term…
Abstract
A transformed image generation unit 32 generates a transformed image by transforming an oblique image. A target region specifying unit 36 specifies a target region indicating the target in the front image based on a feature extracted from a typical portion of a document written on a target in a sample image and a feature extracted from at least a part of the front image. A verification unit 38 determines whether a target shown in the oblique image is the same as a target shown in the front image by verifying the target region in the front image and a region in the transformed image associated with the target region.
Claims8
A verification system comprising:
- at least one processor;
- and
- at least one memory device storing instructions which, when executed by the at least one processor, cause the at least one processor to perform operations comprising:
- acquiring a front image indicating a state in which a written surface on which a document is written in a target is viewed in a front direction;
- acquiring an oblique image indicating a state in which the written surface is viewed in an oblique direction;
- generating a transformed image indicating a state in which the target shown in the oblique image is viewed in the front direction by transforming the oblique image based on a feature extracted from at least a part of the front image and a feature extracted from at least a part of the oblique image;
- specifying a target region indicating the target in the front image based on a feature extracted from a typical portion of a document written on a predetermined target in a sample image indicating a known region of the target and a feature extracted from at least a part of the front image;
- and
- determining whether a target shown in the oblique image is the same as a target shown in the front image by verifying the target region in the front image and a region in the transformed image associated with the target region.
A verification method comprising:
- acquiring a front image indicating a state in which a written surface on which a document is written in a target is viewed in a front direction;
- acquiring an oblique image indicating a state in which the written surface is viewed in an oblique direction;
- generating a transformed image indicating a state in which the target shown in the oblique image is viewed in the front direction by transforming the oblique image based on a feature extracted from at least a part of the front image and a feature extracted from at least a part of the oblique image;
- specifying a target region indicating the target in the front image based on a feature extracted from a typical portion of a document written on a predetermined target in a sample image indicating a known region of the target and a feature extracted from at least a part of the front image;
- and
- determining whether a target shown in the oblique image is the same as a target shown in the front image by verifying the target region in the front image and a region in the transformed image associated with the target region.
A non-transitory computer readable information storage medium storing a program which is to be executed by a computer to execute:
- a procedure of acquiring a front image indicating a state in which a written surface on which a document is written in a target is viewed in a front direction;
- a procedure of acquiring an oblique image indicating a state in which the written surface is viewed in an oblique direction;
- a procedure of generating a transformed image indicating a state in which the target shown in the oblique image is viewed in the front direction by transforming the oblique image based on a feature extracted from at least a part of the front image and a feature extracted from at least a part of the oblique image;
- a procedure of specifying a target region indicating the target in the front image based on a feature extracted from a typical portion of a document written on a predetermined target in a sample image indicating a known region of the target and a feature extracted from at least a part of the front image;
- and
- a procedure of determining whether a target shown in the oblique image is the same as a target shown in the front image by verifying the target region in the front image and a region in the transformed image associated with the target region.
Dependencies are inferred from the claim text.