Method of identification and limitation of the basic reasons which form the sculpture of the tread of a pneumatic

摘要

Method of identification and limitation of the basic reasons which form the sculpture of the tread of a tyre.Method for inspection of the tread of a tyre of which the sculpture is formed by the union of the elements juxtaposed ring, separated between themselves for the borders of known forms, which are basic reasons.In a small number sequ00fcenciados of predetermined way in which is carried out the acquisition of an image of the surface of the tread of the tyre to inspect formed by pixels associated with a level of light intensity, is transformed into the image located axially (x ~ 1 ~ x ~ 2 ~) The same distance of a reference circumferential given (oy), the value inverse (- y ~ 1 ~,- y ~ 2 ~) of circumferential displacement (Y ~ 1 ~ y ~ 2 ~) in relation to an axial line (ox) the point (P ~ 1 ~ p ~ 2 ~) situated on the border line of the form known in the same axial distance (x ~ 1 ~ x ~ 2 ~.) of said circumferential reference, so that the boundaries between the elements appear in the The form of rectilinear marks oriented in the axial direction.It is analyzed the image with the aid of a filter sensitive to the contours in order to identify points of the image positioned in a line oriented axially, which are associated with points in a straight posocionados oriented axially, which are assimilated to points positioned in a Li. NHA border between two elements