| 摘要 |
The invention relates to a method of validation (300) of the use of a real finger as support of a fingerprint, said method of validation (300) comprising: - a positioning step (302) during which the support is placed such that it bears, - a capture step (304) during which a so-called captured image of the print is captured, - a filtering step (306) during which the captured image is transformed into a resulting image by passage through a low-pass filter, - a locating step (308) during which an origin point O, the intensity of whose pixel is representative of the maximum pressure exerted on the support, is located on the resulting image, - a verification step (310) during which it is verified that, on the resulting image, for a plurality of radii issuing from the origin point O, and for each of said radii, for a plurality of points M, the intensity of the pixel of each point M of said radius is representative of a decline in the pressure exerted on the support as the distance from the origin point O to the point M increases, and - a decision taking step (312) during which a decision as regards the validity of the support is taken as a function of the results of the verification step (310). |
