Vsd Limited

Michael John Black

Edward Colby

Ian Frederick Moore

Robert Frederick Aird

A method of operating a computer for smoke and flame detection comprising the steps of: receiving digitised images of the region to be monitored; comparing pixels of one of said images with pixels of another said image according to two predetermined procedures to produce a flame present decision and a smoke present decision; and providing a fire detected signal according to said smoke present and flame present decisions.

Smoke and flame detection

A method and apparatus for the detection of flame by entering (S) a video signal into an algorithm which processes individual pixels in (S) a frequency band is determined and used as a filter (S) applies a threshold to create a map of significant movement (S) applies an awareness map (S) a number of parameters are calculated to decide whether flame is present in the video images being processed (S) applies further filtering before indicating an alarm registering the presence of a flame threat.

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Cambridge, United Kingdom

Michael John Black