Method and device for detecting micro-expression video sequence in video stream

The invention discloses a method and device for detecting a micro-expression video sequence in a video stream, and the method comprises the steps: obtaining the video stream, enabling the video stream to generate a plurality of batches of video frame sequences according to a time sequence, and enabling the number of video frames contained in the batch of video frame sequences to be the same as the number of GPUs of a first graphic processing unit group; loading each video frame in the video frame sequence of the first batch by using each GPU of the first graphic processing unit group, and preprocessing the video frames of the batch; inputting at least part of the preprocessed video frame sequence of the batch into a second graphic processing unit group; and loading each video frame of the at least partial video frame sequence after preprocessing by using each GPU of the second graphic processing unit group to realize micro-expression detection. According to the embodiment of the invention, the micro-expressio