Research On Dynamic Simulation And Visualization Of Fishing Net

With the advent of the 21st century, modern pelagic fishery make higher requirements for the professional skill of crews of fishboat. So it's an urgent need for crews to be trained professionally. Crews of fishboat can be trained for fishing vessel handling and using different fishing gear in a variety of complex sea conditions by using fishing simulator.Compared with traditional training methods, this training on the one hand can reduce the training time and save the training costs, on the other hand there is no risk.The visualization of fishing net has directly impact on the training effects for crews who be trained with the fishing simulator. Therefore, this dissertation focuses on the real-time visualization of fishing net based on research on the hydrodynamic of fishing net,which lay a foundation for the development of fishing simulator. The innovative contributions of this dissertation summarized here are:1. The feasibility of fishing net modeling with B-spline methods is verified after analyzing the visualization methods of flexible objects and the characteristics of fishing net.2. A method of rendering fishing net and bridle with cubic B-spline interpolation curve based on physical model is proposed and realized.This method constructs cubic B-spline interpolation curve with the method of vertex inversed solution,then visualization of fishing net is realized by texture mapping.3. A method of visualization of fishing net with cubic B-spline interpolation surface based on physical model is proposed and realized,which improve the real-time visualization of fishing net.This method simplifies the geometric model of fishing net and reduces the number of mass points,then reconstruction of cubic B-spline interpolation surface by the way of regarding the simplified mass points as lattice of data points is realized.The texture mapping of the surface is realized by the method of stitching texture object.