特种复杂试验装置中模型动态建模系统设计

Dynamic Modeling Inside Special Test Equipment

摘要:

为克服特种复杂试验装置中模型不可接触、传统动态建模方式周期长等困难，设计一种基于运动恢复结构算法的动态建模系统，实现实时的动态建模，以更直观和精确的指导试验。试验装置内设置车道线，使用智能寻迹车进行轨迹识别，环绕模型行进。智能寻迹车上同时搭载光学相机和红外相机，同视角拍摄特种复杂试验装置中模型的图像。使用运动恢复结构算法，从光学相机拍摄的图像重建模型的三维结构。模型上设置有环状编码标记点，利用标记点的坐标增加重建的精度。使用改进的运动恢复结构算法，从红外相机拍摄的图像重建红外三维结构，并建立起与光学图像生成的三维结构的对应关系。系统最终获得具有温度信息的可视化模型，并可使用头戴式虚拟现实设备进行沉浸式体验。

Abstract:

Models inside special test equipment usually can not be contacted, and the traditional modeling methods take too much time. In order to realize real-time dynamic modeling and assist the experiment intuitively and accurately, a structure from motion based system is designed. The lane line is set in the test equipment, and a car is moving around the model guiding by track recognition algorithm. The car is equipped with an optical camera and an infrared camera, to take pictures of the model in the test equipment from the same angle of view. Using structure from motion algorithm, the 3D structure of the model is reconstructed from the optical pictures. In order to improve the accuracy of reconstruction, circular coded targets are added to the model. Using improved structure from motion algorithm, the infrared 3D structure is reconstructed, and the corresponding relationship with optical 3D structure is established. Finally, the system obtains a visual model with temperature information, which can be used by the head mounted virtual reality device for immersive experience.