Determination of temperature distributions on awkwardly located

Details Determination of temperature distributions on awkwardly located Determination of temperature distributions on awkwardly located

1978-06-12

1981-03-03

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250357, 266 87, G01J 100, G01F 2300, C21D 1100

Patent

active

042543380

ABSTRACT:
An infrared heat-image camera is aimed at a hot surface not perpendicular thereto but instead in a direction almost parallel to the surface, presenting to the camera a heat image of the surface not cartesian but instead highly distorted in accordance with the laws of optical perspective. The camera's output data is correspondingly non-cartesian and distorted with respect to organization and content, but the data is applied to a computer which transforms it to cartesian organization and corrects content, and then a corrected cartesian display is generated, simulating the heat image which would be presented to a perpendicularly aimed camera. Alternatively, the camera's scanning mechanisms are programmed to follow a non-cartesian scanning schedule, the geometry of which itself causes the camera output data to have the cartesian organization of a perpendicularly aimed camera. Preferably, the scanning schedule is modified to effect transformation to cartesian organization in only one direction, and transformation to cartesian organization in the other direction is computer-performed.

REFERENCES:
patent: 3588067 (1971-06-01), Shimotsuma et al.
patent: 4110617 (1978-08-01), Legille

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