METHOD AND DEVICE FOR SIGMA-DELTA ALGORITHM MOTION DETECTION WITH ADAPTIVE THRESHOLD

摘要

Motion detection method comprising at least the following steps: - calculation of an envelope signal En of a signal Sn, intended to be delivered by at least one pixel of a matrix of pixels and corresponding to an nth captured image; - calculation of a first average M1n of the signal En as a function of the signal En and / or of M1n_1; - calculation of a gamman signal = In x M1n; - calculation of a second average M2n of the gamman signal according to of the gamman signal and / or M2n-1; - calculation of a third mean M3n of the signal Sn as a function of the signal Sn and / or of a preceding value M3n-1 and / or of the signal M2n; Deltan signal = | Sn - M3n | - Comparison between Deltan and M2n signals, a movement being considered detected when Deltan M2n, with n: natural integer.