Patent Document ID: 8300015
Application ID: 11480263
Patent Status: 1

Claim One:
1. A method for detecting motion of an entity equipped with a sensor capturing a sequence of images to be processed, the method comprising using at least one processor to perform the following steps: determining a temporary motion vector relating to a current image as a function of reference data comprising a preceding image and a movement vector associated with the preceding image, wherein determining the temporary motion vector relating to the current image comprises: generating k candidate vectors by adding, to a reference motion vector selected from among a set of vectors including at least one movement vector associated with a previous processed image, respectively k search vectors, k being an integer greater than 1; and selecting a motion vector from among the k candidate vectors as a function of a selection rule; when the temporary motion vector relating to the current image does not satisfy a reliability criterion, indicating the temporary motion vector relating to the current image is not reliable, determining a temporary motion vector relating to a following image, on the basis of the same reference data; and when the temporary motion vector relating to the current image satisfies the reliability criterion, indicating the temporary motion vector relating to the current image is reliable, setting a movement vector associated with the current image equal to the temporary motion vector, wherein an amplitude of search vectors of a first generating of k candidate vectors is determined by selecting a highest value from amongst a threshold amplitude, a horizontal component divided by two of the movement vector associated with the preceding processed image and a vertical component divided by two of the movement vector associated with the preceding processed image.