Thermal imager arrangements

Details Thermal imager arrangements Thermal imager arrangements

1989-10-05

1992-01-14

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

358113, 250332, 250334, G06K 920

Patent

active

050816934

ABSTRACT:
Pictorial data from a thermal imager is applied on a line to a RAM at which a histogram representing the numerical distribution of pixel values is produced. This is applied to a microprocessor which uses the histogram to produce a transform to control the gain and offset of the data output of the processor. The microprocessor sets a look-up table to apply the transform to the received data, the output of the table being converted to analogue form at an analogue-to-digital converter.

REFERENCES:
patent: 4419692 (1983-12-01), Modisette et al.
patent: 4719350 (1988-01-01), Alm
patent: 4771267 (1988-09-01), Russell, Jr. et al.
patent: 4948964 (1990-08-01), Gohlke
patent: 4963036 (1990-10-01), Drisko et al.

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