Security device and system
AssigneeSony United Kingdom Limited
InventorsJonathan Richard Thorpe, Morgan William Amos David
Life of this patent
Estimating the term…
Abstract
A security device and system is disclosed. This security device is particularly useful in a security system where there are many security cameras to be monitored. This device automatically highlights to a user a camera feed in which an incident is occurring. This assists a user in identifying incidents and to make an appropriate decision regarding whether or not to intervene. This highlighting is performed by a trigger signal generated in accordance with a comparison between a sequence of representations of sensory data and other corresponding sequences of representations of sensory data.
Claims25
A security device comprising:
- a representation generating unit configured to generate different types of feature vector representations of both visual and non-visual sensory data captured from a location under surveillance;
- a concatenating unit configured to generate a composite feature vector based on a combination of the different types of feature vector representations for both the visual and non-visual sensory data;
- a comparing unit configured to compare a sequence of composite feature vector representations of the sensory data with other corresponding sequences of representations of the sensory data captured during a training phase;
- a generating unit configured to generate, in response to the comparison, a trigger signal;
- and
- an anomaly indicating unit configured to generate, via a processor, an anomaly value indicating the difference between each composite feature vector in the sequence and each composite feature vector in the other corresponding sequence, in accordance with the Euclidian distance between the said composite feature vectors,
- wherein
- the generating unit generates the trigger signal when the anomaly value is greater than a predetermined threshold,
- the different types of feature vector representations include a hue histogram feature vector and at least one of a shape descriptor feature vector and motion descriptor feature vector, and
- the composite feature vector is a combination of at least two of hue histogram feature vectors, shape descriptor feature vectors and motion descriptor feature vectors.
A security monitoring method comprising:
- generating different types of feature vector representations of both visual and non-visual sensory data captured from a location under surveillance;
- generating a composite feature vector based on a combination of the different types of feature vector representations from the both visual and non-visual sensory data;
- comparing a sequence of composite feature vector representations of the sensory data with other corresponding sequences of representations of the sensory data captured during a training phase;
- generating, and in response to the comparison, a trigger signal;
- and
- generating, via a processor, an anomaly value indicating the difference between each composite feature vector in the sequence and each composite feature vector in the other composite corresponding sequence, in accordance with the Euclidian distance between the composite feature vectors;
- and
- generating the trigger signal when the anomaly value is greater than a predetermined threshold,
- wherein
- the different types of feature vector representations include a hue histogram feature vector and at least one of a shape descriptor feature vector and motion descriptor feature vector, and
- the composite feature vector is a combination of at least two of hue histogram feature vectors, shape descriptor feature vectors and motion descriptor feature vectors.
Dependencies are inferred from the claim text.