Method for detecting a movement of a body
AssigneeP³Lab
InventorsPierre Martin Jack Gérard DAYE, Rémy WOINE
Life of this patent
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Abstract
The invention relates to a computer-implemented method for detecting a movement of a body from a sequence of images of this body, by isolating those images (51) belonging to image pairs in which a derivative function (3) of a similarity measure (2) of those image pairs is greater than a predetermined threshold (4). In this way, the movement of the body is detected in these images (51), which can then be processed more precisely to study the movement, without the need to process all the images in the sequence of images.
Claims24
A method for detecting a movement of a body from a sequence of images of this body, the method being computer-implemented and comprising the following steps:
- (i) determining a similarity measure (2) of each image pair of a sequence of image pairs, the sequence of image pairs being induced by the sequence of images and including each image thereof;
- (ii) determining a derivative function (3) of the similarity measure (2) on the sequence of image pairs;
- (iii) extracting at least one image (51) from each image pair in which the derivative function (3) is greater than a positive threshold (4);
- (iv) detecting the movement of the body on the basis of the images extracted in the step (iii).
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Dependencies are inferred from the claim text.