A method of creating a signature for an article can be provided. The method can comprise illuminating regions of the article sequentially by light at non-normal incidence and detecting light reflected from the surface of each region of the article. The method can further comprise processing signals representative of the reflected light from each region, the signals being indicative of a surface roughness of the region, to determine a signature for the article.
申请公布号
WO2007144598(A1)
申请公布日期
2007.12.21
申请号
WO2007GB02173
申请日期
2007.06.12
申请人
INGENIA TECHNOLOGY LIMITED;COWBURN, RUSSELL, P.;BUCHANAN, JAMES, DAVID, RALPH;SEEM, PETER, ROBERT
发明人
COWBURN, RUSSELL, P.;BUCHANAN, JAMES, DAVID, RALPH;SEEM, PETER, ROBERT