METHOD OF DETECTING AN OBJECT IN A SCENE COMPRISING ARTEFACTS

摘要

The invention relates to a method of detecting an object in a scene situated in a sector, and liable to include artefacts, which comprises a step of scanning the sector at an angular rate ?', a step of acquiring digital images of the scene at a tempo f by means of a matrix detector, these images comprising pixels and covering a field of instantaneous angular width "a". It comprises the following steps of processing the images acquired, in batches of N consecutive images with N = af/?': - distributing the N images into P groups of images, - for each group p, accumulating the images of the group in such a way as to obtain an accumulated image lp, - for each image lp, selecting the pixels which satisfy a determined detection criterion, - for each image lp comprising at least one selected pixel, termed the start-of-confirmation image, performing a step of temporal confirmation which comprises the following sub-steps: applying a temporal confirmation criterion by comparing with a number K, the number k of times that this pixel selected from the starting image has been selected in the subsequent images lp: this pixel will be considered to be that of an object if k > K, repeating this temporal confirmation criterion for all the selected pixels of this starting image.