Fake signature detection
AssigneeJumio Corporation
InventorsPei-I Chen, Giona Matasci, Artem Voronin, Arnaud Roussel, Navaneeth Kamballur Kottayil
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Abstract
The disclosure includes a system and method for fake signature detection including identifying, using one or more processors, within a document image a signature portion, the signature portion representing a signature; applying, using the one or more processors, one or more fake signature detection models to the signature portion; determining, using the one or more processors and the one or more fake signature detection models, whether the signature represented in the signature portion is a fake signature; and presenting, using the one or more processors, the determination.
Claims18
A method comprising:
- identifying, using one or more processors, within a document image captured using a camera, a signature portion of the document image, the signature portion representing a signature in the document image, the document image captured by a camera;
- applying, using the one or more processors, a variational autoencoder to the signature portion of the document image, wherein the variational autoencoder disentangles a style of the signature portion of the document image from a content of the signature portion of the document image;
- determining, using the one or more processors, whether the signature represented in the signature portion of the document image is a fake signature including:
- determining, using an inter-signature detection model, whether a commonality exists between the signature represented in the document image and other signature instances, wherein the commonality is based on one or more of the content of the signature portion of the document image and the style of the signature portion of the document image;
- and
- determining, using an intra-signature detection model, whether an anomalous consistency exists between a first character and a second character, wherein the first character and second character are characters within the signature represented in the document image;
- and
- presenting, using the one or more processors, the determination.
A system comprising:
- one or more processors;
- and
- a memory, the memory storing instructions that, when executed by the processor, cause the system to:
- identify, within a document image captured using a camera, a signature portion, the signature portion representing a signature;
- apply a variational autoencoder to the signature portion of the document image, wherein the variational autoencoder disentangles a style of the signature portion of the document image from a content of the signature portion of the document image;
- determine whether the signature represented in the signature portion of the document image is a fake signature including:
- determining, using an inter-signature detection model, whether a commonality exists between the signature represented in the document image and other signature instances, wherein the commonality is based on one or more of the content of the signature portion of the document image and the style of the signature portion of the document image;
- and
- determining, using an intra-signature detection model, whether an anomalous consistency exists between a first character and a second character, wherein the first character and second character are characters within the signature represented in the document image;
- and
- present the determination.
Dependencies are inferred from the claim text.