Mark detecting system using image pickup device

Details Mark detecting system using image pickup device Mark detecting system using image pickup device

1979-03-28

1981-07-28

Ng, Jin F.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358100, 364478, 364559, 356373, 356426, 356399, H04M 718, G06F 1570, G01B 1114

Patent

active

042813425

ABSTRACT:
In a mark detecting system using an image pickup device such as a TV camera in which a mark in the form of a regressive reflector is provided on an object, the field of view of the image pickup device is illuminated with light of a specified wavelength from an illuminating device placed in the vicinity of the image pickup device. The reflected light is introduced on the image pickup device through a filter capable of cutting off light having wavelengths other than the specified wavelength. Since the mark forms a bright pattern on an image produced within the field of view of the image pickup device, the position of the mark can be easily detected by means of a data processor which processes image signals.

REFERENCES:
patent: 3922539 (1975-11-01), Carnes et al.
patent: 4041286 (1977-08-01), Sanford
patent: 4091394 (1978-05-01), Kaskioka et al.
patent: 4152723 (1979-05-01), McMahon et al.

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