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Method of augmented authentification of a material subject

An image and similarity technology, applied in the direction of instruments, calculations, electrical components, etc., can solve problems such as disallowed authentication

Active Publication Date: 2019-03-15
KERKVEST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, all of these methods search to determine whether a high or a small similarity exists between two images, but do not allow for authentication of the image or of the subject the image came from or who acquired it

Method used

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  • Method of augmented authentification of a material subject
  • Method of augmented authentification of a material subject
  • Method of augmented authentification of a material subject

Examples

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Embodiment Construction

[0184] In the sense of the present invention, the similarity between a first image and a second image or between parts of these images is evaluated by a similarity indicator given from the first image and the second image or their corresponding Higher positive values ​​since parts are similar to each other. The method of normalizing the correlation coefficient (in the statistical sense) constitutes the preferred similarity indicator of the invention. In general, correlation indicators as a method of differentiating related indicators are examples of other similarity indicators. The reciprocal of the distance or divergence (in the mathematical sense) between images or parts thereof constitutes a family of other possible similarity indicators.

[0185] Therefore, different calculation methods can be implemented. By way of indication and without limitation, figure 1 A first example of calculating a similarity vector is shown, according to the normalized central correlation co...

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Abstract

The invention relates to a method for determining a relational imprint between two images comprising the following steps - the implementation of a first image and of a second image, - a phase of calculating vectors of similarity between tiles belonging respectively to the first and second images, the similarity vectors forming a field of imprint vectors, the field of imprint vectors comprising atleast one haphazard region disordered in the sense of an entropy criterion, - a phase of recording in the guise of relational imprint of a representation of the calculated field of imprint vectors. The invention also relates to a method for authenticating a candidate image with respect to an authentic image implementing the method for determining a relational imprint according to the invention.

Description

technical field [0001] The invention relates to the technical field of authentication and integrity checking of material bodies, and the field of visual cryptography. In a preferred, but not exclusive application, the invention relates to the field of unified authentication of material bodies. Background technique [0002] Image matching methods are well known for object recognition / localization in robotic visual servoing or navigation, for reconstruction of the same scene from different viewpoints in stereo vision, for assembly of partially overlapping views in panoramic photography, or Also used for shape recognition in image search / image database indexing. Object tracking methods over time also exist. However, all of these methods search to determine whether a high or a small similarity exists between two images, but do not allow for authentication of the image or of the subject from which the image came or who acquired it. [0003] Therefore, there is a need for a met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62H04N1/32
CPCH04N1/32144G06V10/758G06V10/761G06F18/22
Inventor Y·布唐T·富尔内尔
Owner KERKVEST
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