Method and system for swimming posture recognition

The invention provides a method and a system for recognizing swimming postures. The method comprises the following steps: acquiring multiple groups of video data containing swimming postures of a swimmer as to-be-identified data by a plurality of data acquisition devices positioned at different positions; preprocessing the data to be identified so as to obtain normalized key frame data from the data to be identified; joint feature information of the swimmer is determined from the normalized key frame data by using a convolutional neural network, and the joint feature information is position information of each joint of the swimmer in the normalized key frame data; according to the position information of the joints, orderly connecting the joints to obtain a skeleton diagram of the swimmer; based on the Euclidean distance, the similarity between the skeleton drawing of the swimmer and a swimming posture standard skeleton drawing is calculated, and the similarity is used for correcting the swimming posture of t