Patent ID: 8144935

Claim:
A movement detection method comprising at least the following steps: the calculation of a first mean M 1 n of a signal S n designed to be supplied by at least one pixel of a pixel matrix which corresponds to an n-th captured image, in function of the value of the signal S n and/or a previous value M 1 n-1 ; the calculation of a signal Δ n =|M 1 n −S n |; the calculation of a second mean M 2 n of the signal Δ n in function of a previous value M 2 n-1 and/or the value of the signal Δ n ; the calculation of a third mean M 3 n of the signal (S n −k 1 ·M 2 n ) in function of a previous value M 3 n-1 and/or the value of the signal (S n −k 1 ·M 2 n ); the calculation of a fourth mean M 4 n of the signal (S n +k 2 ·M 2 n ) in function of a previous value M 4 n-1 and/or the value of the signal (S n +k 2 ·M 2 n ); detecting a movement from the result of at least one comparison made of the signals S n , (M 3 n −M 2 n ) and (M 4 n +M 2 n ); where n: natural whole number; and k 1 and k 2 : non-null positive real numbers.