Diagnostic x-ray installation for providing subtraction images

Details Diagnostic x-ray installation for providing subtraction images Diagnostic x-ray installation for providing subtraction images

1981-10-26

1984-01-10

Howell, Kyle L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

128653, 128654, H04N 532

Patent

active

044255802

ABSTRACT:
An exemplary embodiment includes a television pickup installation, image storage circuitry, a difference stage for the subtraction of two chronologically successively obtained image data signals through difference formation and a monitor. An address computer is connected with the output of the difference stage and has outputs connected to the address inputs of the image storage circuitry. The computer alters in a step-wise fashion the allocation of the image point data to be compared in the difference stage (13) until a minimum of the difference formed during the subtraction of two images results.

REFERENCES:
patent: 3974386 (1976-08-01), Mistretta et al.
patent: 4204225 (1980-05-01), Mistretta
patent: 4204226 (1980-05-01), Mistretta et al.
patent: 4212062 (1980-07-01), Kohno et al.
patent: 4335427 (1982-06-01), Hunt et al.
Mistretta et al., "An Improved Technique for Enhancing Small Perodic Contrast Changes in Television Fluoroscopy", Optical Engineering, Sep./Oct. 1973, pp. 169-175.

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