Interactive 3D Texture Mapping Generation System

With the development of computer graphics,three-dimensional models are gradually integrated into fields of film and television production,games,mechanical processing,3d printing,electricity supplier,medical experiments,interior design,virtual reality,augmented reality and cultural relics protection,A wide range of applications.In recent years,scholars at home and abroad have made a great deal of research on 3d modeling technology.The 3d modeling techniques are mainly divided into the following three technical solutions: Modeling with 3d modeling software such as Maya,3dmax and Zbrush;3d reconstruction technology,using a digital camera to capture the texture image of the object,through the image pair of parallax and pixel coordinates to restore the object's three-dimensional coordinates.Laser scanning rapid reconstruction technology,through the principle of laser ranging fast and effective access to the model surface three-dimensional information.The birth of 3d scanner greatly increased the speed and accuracy of 3d modeling,which greatly improved the efficiency of 3d modeling.Not only do 3d models require high-precision geometry,surface texture is also an important factor in obtaining high-quality models.At present,the texture of the model is still generated by the way of texture mapping by the modeling software.This method not only possesses higher professional knowledge requirements for the mappers,but also consumes a great deal of manpower and material resources.Therefore,high-precision and efficient texture mapping technology is the key technology to improve the authenticity of the model.The system uses an interactive three-dimensional texture mapping technology.The algorithm is mainly composed of three-dimensional pickup algorithm and camera calibration algorithm.Feature point picking is one of the key technologies based on the human-computer interaction texture mapping.Accurately picking up the coordinates of 3d feature points and the coordinates of 2D feature points are the prerequisites for ensuring high-quality texture mapping.Three-dimensional picking algorithm is more complex than two-dimensional picking algorithm.In this paper,a fast threedimensional picking technique based on perspective projection is adopted to pick up three-dimensional feature points on the surface of the model through human-computer interaction.This method can ensure the quality of the texture and improve the texture mapping accuracy.The technology of camera calibration is the core technology of texture mapping.DLT camera calibration is adopted here.DLT camera calibration does not need to specifically solve the camera's internal and external parameter values,which reduces the complexity of the algorithm and is easy to realize.Texture mapping requires multiple images for texture mapping.SIFT registration algorithm is adopted.RANSAC algorithm is used to remove the mismatch points and achieve image registration.Compared with the texture mapping method using texture software for texture mapping,the system greatly reduces the requirements for mappers,has a simple interface and easy operation,not only can improve the efficiency and accuracy of texture mapping,but also reduce a large amount of manpower Material costs.