Online detection device and method for combustion time of flame-retardant material

The invention discloses an on-line detection device and method for the combustion time of a flame-retardant material, and belongs to the field of machine vision. Wherein the detection device comprises a combustion detection box, a camera and a recognition device. The detection method comprises the following steps: training a deep network model for identifying that a flame retardant material in an image is in a combustion state, and calculating the combustion time of the flame retardant material in a video by using the model. The model is divided into three units, namely a feature embedding extraction unit, a space correlation structure extraction unit and a decision-making unit. And the feature embedding extraction unit and the space correlation structure extraction unit are respectively used for extracting image features in the video frame and the structural relationship between the objects. And the decision unit is used for fusing the data of the two feature extraction units and finally outputting the proba