Research On The Technology Of 3D Image Modeling In Ship Handling Simulator

The content of this thesis is based on the project of ship handling simulator system. In the project, three-dimensional models of ships and coastwise scenery of the sea-route are built in computer, in order to show people receiving navigation training scene of the real environment when the system is running.First, the modeling principle of three-dimensional used in the scene simulation system is discussed in this paper. Then the computer modeling technology and the method of terrain modeling based on DEM are researched. A method of terrain modeling based on the contour terrain map has been obtained through studying the step and the arithmetic of modeling the regular DEM model and triangulated irregular network model.After the discussion of basal knowledge above all, the three-dimensional scene models including terrain model have been set up by using the most popular three-dimensional modeling application software- Multigen Creator. In the course of modeling, some predigestion methods to make the models adapt the requirement of real-time system are used. Finally a three-dimensional model database based on OpenFlight format is built, and this model database has been used in the system very well.