Registers – Platform operated – Platform actuated traffic counters
Patent
1979-11-21
1982-10-19
Thesz, Joseph M.
Registers
Platform operated
Platform actuated traffic counters
358163, G06M 1104
Patent
active
043552285
ABSTRACT:
A shading corrector is provided for an image analyzer. The shading corrector is capable of storing an image presented to a raster scanning television camera included in the overall system. A memory is used to store camera video voltage variations which are representative of an object-free background field. When specimens are subsequently introduced into the field of view, the resulting video voltage may be compared in a voltage comparator to the stored background reference. A circuit is provided to correct the stored background and provision is made for using the background of a juxtaposed position in the event that the background used for the correction is covered by an object. The system is also provided with a light pen or equivalent device for identifying positions in the raster at which modifications are desired. Provision is then made for correcting images at these selected positions such as by adding to or subtracting from the images.
REFERENCES:
patent: 3728481 (1973-04-01), Froehlich et al.
patent: 3743772 (1973-07-01), Pieters
patent: 3919473 (1975-11-01), Cotter
patent: 3922532 (1975-11-01), Kitchener et al.
Kitchener William R.
Sama Stephen L.
Artek Systems Corporation
Thesz Joseph M.
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