COMPUTERIZED VIDEO DENSITOMETRY METHOD FOR RAPID ANALYSIS OF INFRARED PHOTOGRAPHIC IMAGES.

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作者
Roberts Jr., Ernest
Calfo, Frederick D.
Pollack, Frank G.
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来源
NASA Technical Paper | 1980年 / 1686期
关键词
DENSITOMETERS; -; Applications;
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摘要
A computerized video densitometry method for the rapid analysis of thermal data from infrared photographs is described. It is approximately 50 times faster than a corresponding manual method of analysis, with no apparent sacrifice of accuracy. The object of the technique is to determine the temperature distribution across a heated surface. Infrared photographs of the heated surfaces provide the raw data. A video-based, computer-operated image analysis system provides the equipment. Infrared photographic pyrometry using a flat-bed micro-densitometer forms the basis of the technique. The procedure is illustrated on a thermally cycled aircraft gas turbine blade.
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