Process for determining at least one characteristic of the format of a fragment tire and method of examining a sample of tire fragments

摘要

Process for determining, by image analysis, of at least one characteristic of form at least one fragment tire (1; 101), comprising each fragment of a central body (2; 102) mainly composed of rubber and different parts filiform (41-45: 1041-1046) extending from said central body, which are composed mainly of metal or textile fibers, process characterized in that: - the image (P) of the central body (2; 102) is identified ; - a convex contour (C; C ') is made of set of each fragment, enveloping the end (4'1-4'5: 104'1- 104'6) of said filiform parts and possibly certain vertices ( 2'1-2'3) of the central body; and - determining the or each characteristic (L, S, L / L, S / s) format of each fragment from at least the image of said convex contour (C; C ').