Three-dimensional Reconstruction Of Outdoor Scenes Based On Vtk

The method of using 3D Laser Scanner to get the geometric data of actual outdoor scenes has broad application in surveying and mapping, heritage preservation,urban planning and extensive areas of digital entertainment because of its some advantages include convenience,user-friendly and its higher data accuracy and so on.These data that obtained by the Laser Scanner is called Depth Data(Range Data) or Distance Image because they contain the distance information between from the scanner to the scenes.As the the principle and characteristic of the Laser Scanner, the data that acquired by Scanner to the outdoor scenes usually has a huge volume of data, they increased not only the burden of computer hardware but also the difficulty of processing. In recent years, due to the decline of hardware prices and the promotion of applications of parallel algorithms, these fields of how to achieve rapid and efficient processing on Depth Data and 3D scene reconstructing using these data are a hot and difficult topic to study. Many research institutions around the world have been a lot of researches in this field, and many achievements have been applied in practice.In 3D processing field, OpenGL is a has been supported by most hardware and operating system because it is relatively easy to use and highly efficient,so it is used widely and popular in practice. However,with 3D models and scientific computing visualization in practice in a wide range of application and the prevalence of Object-oriented programming,a new 3D engineer that use easily and meet the criterion of OO was urgently needed,what's more,this new 3D engineer must be portable, compatibility, independent of any hardware and operating system and leave some interfaces to expand it's functions. Under this kind of demand, VTK (Visualization Toolkit) emerged as the times require.VTK is designed strictly according to the object-oriented theory,therefore it has the all characteristics including inheritance, polymorphism and encapsulation and so on. And in order to give dual attention to the effectiveness of the Compiled programming language and the simplicity of the interpreted programming language,VTK adopts the multilayered...