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Obtaining Texture Coordinates

The next step is to map realistic textures onto the geometric fish display models. The most important step in the texture mapping process is to derive texture coordinates which map the digital image of the real fish onto the 3D surface of the corresponding display model. Once the texture coordinates are determined, the rest of the texture mapping procedure can be carried out via a simple function call in any commercially available 3D graphics software package that supports texture mapping; e.g. OpenGL tex2html_wrap_inline2972 , RenderMan tex2html_wrap_inline2972 , etc.

Mapping irregular texture images onto irregular 3D geometric shapes is not a trivial problem because the correspondence between the 2D texture coordinates and the 3D object coordinates is difficult to determine automatically. There is currently no general-purpose software to accomplish this task. In our work, we have developed a new interactive tool for effectively obtaining texture coordinates from irregular images.


next up previous contents
Next: Deformable Mesh Up: Modeling the Form and Appearance Previous: Constructing 3D Geometric Fish Models
Xiaoyuan TuJanuary 1996