现实反馈的仿真算法研究

指出虚拟现实和仿真的方法已在多个工业领域中得到应用,但目前仿真应用都有一个特点:缺少现实反馈信息指导仿真场景的绘制,控制信息只能单向传输.而在很多领域的应用中,仿真场景需要"忠于"现实场景,从而需要一个信息从现实反馈的方法.现实反馈的关键问题就是如何使仿真场景中物体始终与现实中的对应物体一致,包括形状一致和位置一致.针对此问题,提出一种方法,即通过精确建模保证形状一致,通过合适的模型变换保证位置一致.模型变换矩阵的计算方法是:定义和测量物体上的3个控制点,根据三点的模型坐标和世界坐标计算.利用这种算法构建实时仿真场景的数据要求是:预先建造好的零部件模型;每个刚性部件需测量反馈3个控制点的坐标.这种算法可作为仿真监控系统的数学基础.

Research on simulative algorithm based on reality feedback

Virtual reality and its simulation method have been applied to many industrial areas,but there was a feature in those applications: the lack of feedback information from the reality scene,which would have decided the drawing of simulative scene because there was only one-way transmission for the control information.In many areas,simulative scene has to be "loyal" to the reality scenes,thus a method of feedback information from the reality will be necessary.The key problem of feedback form reality will be keeping the objects in simulative scene identical with their corresponding reality,including their shape and position.Aimed at this,a method was proposed to ensure the same shape by using an accurate modeling and the same position with proper transformation.The calculation method of transformation matrix was to define and survey three controlling points on the object and use their model coordinates and world coordinates for its calculation.The data necessary for this method were: part's models made beforehand,and coordinates of three controlling points for every rigid part to be surveyed and fed back.This algorithm could be used as mathematic basis of simulative surveillance system.