Developing a mathematical representation of any surface of an object in three dimensions via specialized software is  Modeling (or three-dimensional modeling).
Nowadays  Modeling is extensively used  in movies, videogames, architecture, publishing, geology, medical science etc. There are some popular 3D Modeling softwares available  for creation of 3D models like Maya, 3Ds Max, Lightwave, Blender and Milkshape 3D.
 Top techniques used for creating 3D models:
  • Box/Subdivision Modeling
  • Edge/Contour Modeling
  • NURBS/Spline Modeling
  • Digital Sculpting
  • Procedural Modeling
  • Image-Based Modeling
  • 3D Scanning
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