Method of surveillance using a multi-sensor system
First Claim
1. A method for the surveillance of a place using a network of image sensors connected to a biometric recognition device so arranged as to retrieve biometric features of persons from images supplied by the sensors and to compare the biometric features retrieved from images provided by distinct sensors in order to detect therefrom the presence of the same person according to a score of proximity between the biometric features, with the method comprising the following steps, implemented by the biometric device of:
- determining, on the images, and storing, positional information representing at least one position of the persons, whose biometric features have been detected;
when the same person is detected on the images of at least two distinct sensors, determining and storing at least one piece of temporal information representing a split time between the two images;
checking consistency between the newly determined positional and temporal information and the previously stored positional and temporal information.
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Abstract
A method for the surveillance of a place using a network of image sensors connected to a biometric recognition device so arranged as to retrieve biometric features of persons from images supplied by the sensors and to compare the biometric features retrieved from images provided by distinct sensors in order to detect therefrom the presence of the same person according to a score of proximity between the biometric features, with the method comprising the steps of determining positional information and temporal information representing a split time between the two images and checking consistency between the newly determined positional and temporal information and the previously stored positional and temporal information.
19 Citations
17 Claims
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1. A method for the surveillance of a place using a network of image sensors connected to a biometric recognition device so arranged as to retrieve biometric features of persons from images supplied by the sensors and to compare the biometric features retrieved from images provided by distinct sensors in order to detect therefrom the presence of the same person according to a score of proximity between the biometric features, with the method comprising the following steps, implemented by the biometric device of:
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determining, on the images, and storing, positional information representing at least one position of the persons, whose biometric features have been detected; when the same person is detected on the images of at least two distinct sensors, determining and storing at least one piece of temporal information representing a split time between the two images; checking consistency between the newly determined positional and temporal information and the previously stored positional and temporal information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification