The determination of flame or fire edges is theudprocess of identifying a boundary between the area where thereudis thermochemical reaction and those without. It is a precursorudto image-based flame monitoring, early fire detection, fire evaluation,udand the determination of flame and fire parameters. Severaludtraditional edge-detection methods have been tested to identifyudflame edges, but the results achieved have been disappointing.udSome research works related to flame and fire edge detection wereudreported for different applications; however, the methods do notudemphasize the continuity and clarity of the flame and fire edges.udA computing algorithm is thus proposed to define flame and fireudedges clearly and continuously. The algorithm detects the coarseudand superfluous edges in a flame/fire image first and then identifiesudthe edges of the flame/fire and removes the irrelevant artifacts. Theudautoadaptive feature of the algorithm ensures that the primaryudsymbolic flame/fire edges are identified for different scenarios.udExperimental results for different flame images and video framesudproved the effectiveness and robustness of the algorithm.
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