Method and device for detecting a moving body near a structure
AssigneeSens of Life
InventorHubert LAGRANGE
Life of this patent
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Abstract
The invention relates to a method (100) for detecting a moving body close to a structure, which comprises: a step (105) of capturing a video stream; a step (110) of decomposing the video stream into a sequence of images; a step (125) of subtracting a first image and a second image from the sequence; a step (150) of detecting a movement which is representative of the presence of a moving body; a step (155) of defining coordinates which are representative of a search window of the moving body; a step (170) of constituting a sequence of truncated images by selecting, in the initial sequence of images, an area of the images which are restricted to the search window; and a step (175) of processing, by means of a trained neural network, the sequence of truncated images.
Claims13
Method for detecting a moving body close to a structure, which comprises:
- a step of capturing a video stream representative of an environment around the structure;
- a step of decomposing the video stream, by a computational device, into an initial sequence of at least two successive images;
- a step of subtracting, by a computational device, a first image and a second image from the initial sequence;
- a step of detecting, by a computational device, a movement which is representative of a presence of a moving body as a function of the subtraction performed;
- a step of defining, by a computational device, coordinates which are representative of a search window of the moving body as a function of coordinates of the movement detected;
- a step of constituting, by a computational device, a sequence of truncated images by selecting, in the initial sequence of images, an area of the images which are restricted to the search window;
- and
- a step of processing, by means of a trained neural network, the sequence of truncated images in order to recognise a moving body in the sequence of images.
Device for detecting a moving body close to a structure, which comprises:
- means for capturing a video stream representative of an environment around the structure;
- means for decomposing the video stream into an initial sequence of at least two successive images;
- means for subtracting a first image and a second image from the initial sequence;
- means for detecting a movement which is representative of a the presence of a moving body as a function of the subtraction performed;
- means for defining coordinates which are representative of a search window of the moving body as a function of coordinates of the movement detected;
- means for constituting a sequence of truncated images by selecting, in the initial sequence of images, an area of the images which are restricted to the search window;
- and
- means for processing, by means of a trained neural network, the sequence of truncated images in order to recognise a moving body in the sequence of images.
Dependencies are inferred from the claim text.