The present invention relates to an image sequence classification method using deep learning of an artificial neural network, and the image sequence classification method for predicting the combustion state of a flame in the image processing system of the present invention is an image frame including a flame in an electrical fusion layer , receiving T sequential image frames (T is a natural number greater than or equal to 1) for a plurality of time steps, and generating corresponding feature map information. In the backbone network, in the feature map information for each time step, calculating a probability for each combustion state with respect to each other, and determining, in a later fusion layer, a combustion state of the last current time stage from the probability of each combustion state for each time stage.
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