Flame classification method based on contour information

The invention discloses a flame classification method based on contour information, and the method comprises the following steps: extracting a foreground target from an image according to a specific color range, improving the extracted foreground target by means of morphological operation, extracting contours through a contour detection algorithm, calculating the center of gravity of all contours, and classifying the center of gravity of all contours. The method comprises the following steps of: selecting a profile, dividing the profile into an upper section and a lower section according to the gravity center of the profile, coding by using 8-direction chain codes, comparing variances of the 8-direction chain codes of the upper section and the lower section of the same profile, and determining that the flame is a real flame when the ratio of the variances meets a certain condition and the color range is also met. Experiments prove that the flame classification method based on the contour information can effec