| 摘要 |
1533293 Optical recognition of surfaces BENDIX CORP 13 Oct 1976 [20 Nov 1975] 42587/76 Heading G1A A signature signal representative of a characteristic feature 56 on the surface of a body 54 is obtained by obliquely illuminating the feature to produce a pattern of white grey and black areas and generating electrical signals representing respectively the total areas of white, grey and black, the signature signal being stored and compared with those obtained similarly for subsequent identical bodies to determine which face 64, 66 is uppermost. The signature signal may further contain information representative of the centroid and angular position of the body 54, obtained as disclosed in Specification 1474010, and information representative of the position and radius of a window area encompassing the characteristic feature. |
