Abstract: An anti-counterfeit method for random textures and a recognizer thereof The method includes: A. selecting texture material 2 with texture elements 1 distributed randomly; B. a recognition system storing inherent recognition features J of texture elements 1; C. extracting random features S of distribution of texture element 1 and storing in the recognition system, texture material 2 being anti-counterfeit identification 3; D. the recognition system extracting features J? and random features S? of texture elements 1? to be recognized on anti-counterfeit identification 3?, and comparing respectively features J? with recognition features J as well as random features S? and random features S. If the compared results do not match, anti-counterfeit identification 3? is judged not to be anti-counterfeit identification 3. Otherwise, anti-counterfeit identification 3? is judged to be anti-counterfeit identification 3.

Abstract: An anti-counterfeiting fiber, anti-counterfeiting paper containing the anti-counterfeiting fiber, and manufacture method thereof. The anti-counterfeiting fiber is a slice or part of a slice cut along a cross-section of a strip-shaped fiber, wherein the strip-shaped fiber includes a specific structure along the length direction providing anti-counterfeiting characteristics. Structures manufactured using the principles of the process have better orientation than structures manufactured using conventional processes for manufacturing anti-counterfeiting fiber during the paper manufacturing process and can form more unique visual characteristics.

Abstract: An anti-counterfeit method for random textures and a recognizer thereof The method includes: A. selecting texture material 2 with texture elements 1 distributed randomly; B. a recognition system storing inherent recognition features J of texture elements 1; C. extracting random features S of distribution of texture element 1 and storing in the recognition system, texture material 2 being anti-counterfeit identification 3; D. the recognition system extracting features J? and random features S? of texture elements 1? to be recognized on anti-counterfeit identification 3?, and comparing respectively features J? with recognition features J as well as random features S? and random features S. If the compared results do not match, anti-counterfeit identification 3? is judged not to be anti-counterfeit identification 3. Otherwise, anti-counterfeit identification 3? is judged to be anti-counterfeit identification 3.

Abstract: A fluorescent fiber and an anti-counterfeiting material have an optical color that varies with irradiation angles of exciting light. The anti-counterfeiting fiber includes at least two components of materials that extend parallel along the longitudinal direction without twisting. At least one component contains photoluminescence material. The distribution of the components makes the anti-counterfeit fiber form a shielding structure for exciting light, and has an orientation structure. The exciting light shielding structure and orientation structure enable, when the anti-counterfeit fiber falls freely into a plane paralleled to the horizontal plane, the existence of at least two irradiation angles of exciting light above the plane paralleled to the horizontal plane, from which exciting light irradiates on the anti-counterfeit fiber respectively. The anti-counterfeit fiber thereby displays obvious visual difference between two different luminescent colors.

Abstract: An anti-fake material is disclosed. Anti-fake fibers (2) are distributed on the anti-fake material. Part surfaces (3) of the anti-fake fibers (2) are presented on the surface (1) of the anti-fake material (1), wherein said part surface (3) have concave-convex sheltering structure, and at lease two color patterns (AB) are distributed on the surfaces. Said at least two color patterns (A B) have distinct visual difference on the said part surface (3), resulting that the color patterns (A B) can be seen respectively from the surface (1?) of the anti-fake material (1) when observed from different angle of the part surfaces (3). Due to the visual difference according to the present invention is formed by shielding the patterns distributed on the part surfaces (3) of the anti-fake fibers (2) in the anti-fake material with the concave-convex sheltering structure, the exact printing is unable to imitate the three-dimensional structure.