A novel extraction algorithm of fire foreground is proposed to solve the problems of incomplete foreground extraction
serious contour distortion and poor adaptability to complex environment in existing extraction algorithms. The algorithm combines supervised and unsupervised machine learning methods
and determine candidate fire regions by training a dedicated two-level classifier. An improved k-means algorithm is then adopted to segment the candidate regions
and initial cluster centers are calculated from the output of the Real AdaBoost classifier. Eventually
the clustered segmentation result is taken as the extractive foreground. Experimental results show that the proposed algorithm has good adaptability to various complex scenes
such as strong light environment
night lighting environment
and the environments with static or dynamic interference. The error rates of fire foreground extraction obtained by using the proposed algorithm range from 2% to 28%
that is
lower than those of other existing algorithms. Moreover
the processing time of each frame is shorter than 50 ms. The proposed algorithm can fulfill the fire foreground extraction task under various scenes and facilitate the succeeding feature extraction and recognition in image-type fire detection systems.
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references
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