| Based on laser ranging techniques and interactive computer graphics, laser scanning imaging technology have developed rapidly. Visualization of the target by laser scanning is becoming a hot topic in the field of three dimensional imaging and widly applied to various fields.This paper closely depended on the rearch and development of rearch project, that is,system of imaging by laser scanning. After getting scanned data, more in-depth exploration and rearch were carried out in respect of data processing. Through detailed analysis of system requirements, this paper described the functional modules that constitute the system and completed to design and implementation of the control system with the OpenGL graphics library to visualize the target. In particular, after comprehensively analyzing the principles and characteristics of mainstream laser ranging technology, method of data preprocessing exclusive to this system was provided. With the combination of principles of control operation, which can achieve to three-dimensional imaging, and main ways of rotation in the filed of three-dimensional imaging, an algorithm, that is arcball algorithm which can be a easy to solve the conflict between two-dimensional screen and three-dimensional graphics and rorate rapidly a 3-d target by drag mouse, was proposed.This paper also described the characteristics and key achievement technologies of functional modules of control software. And finally, this essay summarized all text and proposed the work prospects. |
