System for measuring objects viewed through a borescope

Details System for measuring objects viewed through a borescope System for measuring objects viewed through a borescope

1989-06-12

1990-12-25

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

128 6, 358107, A61B 104, A61B 106

Patent

active

049807633

ABSTRACT:
This is a device for measuring objects viewed with a borescope by creating an auxiliary image such as a shadow, and projecting it on the object from the general illumination source in a way that its video image changes position or size in proportion to the distance of the image sensing head from the object. A pre-calibrated object magnification and distance overlay for the geometry of the borescope is placed on the video display to indicate the modification factor for the physical measurement of the object on the display screen. Alternatively, electronic calibration and measurement circuitry is provided.

REFERENCES:
patent: 4491865 (1985-01-01), Danna
patent: 4621284 (1986-11-01), Nishioka
patent: 4656508 (1987-04-01), Yokota

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