Research On Parameterized Three Dimensional Reconstruction Based-on Photogrammetry

The purpose of photogrammetry is gathering the image information of the object, determine the shape, size , space location and nature of the object and then realizing three-dimensional instrument of the true world, but it is not good at expressing the object and scenery; On the contrary, the basic purpose of CAD geometry construction is to completely show geometry model of object and scenery on computer, but is not capable of handling the information of scenery and actual object. So it is very reasonable and practically to realize the transformation from actual three dimensional object to three dimensional model on computer by integrating the advantages of these two technologies.This paper , based on analysing the feathers of industrial hardware, first studies the methods to describe the parameterized character of these hardware, then using the photogrammetry characteristic extraction methods, obtain data by extracting information from the images of these industrial hardware, studies the methods to convert these data to character parameter; then by analysing the topology structure of the model, describes the topology relation of the model, finally verifies these methods in AutoCAD environment by using ObjectARX2000, generate parameterized melt model and the three_views of this model.