Streamline seed point selection method based on ship appearance characteristics

The invention provides a streamline seed point selection method based on ship appearance characteristics, and belongs to the field of scientific calculation visualization. According to the technical scheme, the method comprises the following steps: collecting and constructing a sample data set; constructing a BP neural network, and predicting all points on the boundary line of the next layer from all points of the contour line of the longitudinal middle section or all points on the boundary line of one region; constructing a first region boundary line network model, a second region boundary line network model, a third region boundary line network model and a fourth region boundary line network model; and respectively inputting test set data into the trained boundary line network model to obtain corresponding boundary lines. The streamline seed point distribution area boundary line screening model is constructed and the streamline seed point distribution area is divided, so that the flow field characteristics