STUDY ON A 3D-IMAGING FOR SPARKS FROM A FEW PROJECTIONS

本文主要研究了利用数码相机从少量投影中提取火花等的快速三维成像方法。该方法的重点是利用奇异值分解和采样模型对象，从少量投影中快速重建三维图像。首先，我们研究了一种新的奇异值分解算法。基于该算法的计算机仿真实验结果良好。得到了重构参数间的良好条件。其次，我们尝试用数码相机设计硬件和软件接口，并成功地获取了火焰的发射图像。第三，对重建算法进行了实验，成功实现了火焰的三维成像。重建的三维图像效果良好。几次实验清楚地表明，这种重建方法有可能进入实际应用。

The study is concerned with developing a fast 3D imaging method for sparks and so using digital camera from a few projections. The point of this method is rapidly to reconstruct 3D images form a few projections, using the Singular Value Decompositions and the sampling model object.The first, we investigated a new algorithm by using the SVD.The results of computer simulation experiments based on the algorithm were good. We obtained good conditions between reconstructing parameters. The second, we tried to design hardware and software interface with a digital camera, and aucceeded in acquisition of emission images from flames. The third, we experimented with the reconstruction algorithm, and succeeded in 3D imaging for flames. The 3D images reconstructed were good. Several experiments made it obvious that there is a possibility that the reconstruction method will come into practical use.