Measurement And Analysis Of Antenna Mesh Surface Based On Image

The object of study in this paper is a antenna mesh surface. At present, antenna is commonly made up of lightweight flexible material, because of which, and in addition to its large size, the stiffness of the antenna could be abated considerably. At the same time, the antenna will be deformed in varieties of external factors. In this case, the precision of the antenna will be reduced significantly, so its structure must be measured accurately. In this paper, the method of image measurement is used by measuring its key points to analyze its accuracy.Firstly, by summing up the theory of the binocular stereo vision and analyzing the structure of antenna mesh surface, a simulation measurement method for the actual 3m antenna model is put forward.Secondly, considering of the problems in the actual measurement and the characteristics of VRML modeling and simulation, the simulation and the analysis are made based on the antenna model established by using VRML. This paper adopts the binocular stereo vision, and completes camera calibration using the method based on perspective transformation matrix and Zhang's method separately. The feature points sticked on antenna using VRML are used as the data points of photography measurement, and by identifying and analysing them, the antenna mesh surface could be three-dimensionally measured, and its measurement accuracy is also analyzed in this paper.Finally, for the large antenna in practical applications, the method of data registration is used in this paper to simulate and analyze the antenna model, which has a certain reference value for the actual project.