| 摘要 |
The apparatus uses relaxation by the rule of the product according to the recurrence: <IMAGE> where Pn+1(Iij) is the probability, at order n + 1, that a pixel Iij belongs to a target, and where Ikl describes a vicinity Vij of the pixel Iij including the central point, the power Pkl the pi products depending on the position of the neighbours with respect to the point in question, this device comprising, connected in a chain: A) a memory circuit (41) containing a first coding table corresponding to the composition of a function f(x) and of a function fo, where fo is an initialisation function, and where: f(x) : Ln[(G/x)-1] is a scalar function in which x=Pn(Iij), the probability, at order n, that a pixel Iij belongs to a target and in which G is the maximum grey level in the image, B) a linear filter (32) FN whose coefficients and the support are a function of the number N of iterations fixed A PRIORI and of the vicinity Vij, C) a memory circuit (23) containing a constant coding table corresponding to a scalar function g-(x)=G/(1 + e(x)), D) a selection circuit (44) for establishing a threshold S. Application: the automobile industry (infrared images) or the medical imaging industry. <IMAGE> |
