| 3D polygon modeling is used for movie special effects, for video game content and to make photorealistic renders for print and the web. But how is a 3D model made?
3D Polygon modeling is the process of developing three-dimensional objects using a specialized software package designed for the purpose. These modeling applications provide an area of virtual space to work in, and a 3D model is developed in this space using rules of geometry measured by the Cartesian coordinates X, Y and Z to represent width, height and depth.
Each of the sketching operations in VideoTrace provides an intuitive and powerful means of modelling shape from video, and executes quickly enough to be used interactively. Immediate feedback allows the user to model rapidly those parts of the scene which are of interest and to the level of detail required. The combination of automated and manual reconstruction allows VideoTrace to model parts of the scene not visible, and to succeed in cases where purely automated approaches would fail.
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