In this paper, an approximate analytical algorithm in the form of direct Fourier reconstruction is obtained for the recon- struction of data functions arisen from ^-scheme short-scan sin- gle-photon emission computed ...In this paper, an approximate analytical algorithm in the form of direct Fourier reconstruction is obtained for the recon- struction of data functions arisen from ^-scheme short-scan sin- gle-photon emission computed tomography（SPECT） with uniform attenuation, and the modified central slice theorem is developed. Numerical simulations are conducted to demonstrate the effec- tiveness of the developed method.展开更多
采用三维激光扫描技术可有效地提高钦江双线特大桥的健康监测效率。利用Trimble Business Center软件对扫描的点云数据进行配准和去噪,并利用点云切片技术获取桥梁吊索的坐标信息和线形,从而实现对钦江双线特大桥的精确监测。研究结果显...采用三维激光扫描技术可有效地提高钦江双线特大桥的健康监测效率。利用Trimble Business Center软件对扫描的点云数据进行配准和去噪,并利用点云切片技术获取桥梁吊索的坐标信息和线形,从而实现对钦江双线特大桥的精确监测。研究结果显示,三维激光扫描技术具有快速、高效、可视化的特点,拓展了桥梁监测数据的表达形式,为相关研究提供了重要的参考依据。展开更多
基金Supported by the National Natural Science Foundation of China(61271398)the Natural Science Foundation of Ningbo(2012A610031)
文摘In this paper, an approximate analytical algorithm in the form of direct Fourier reconstruction is obtained for the recon- struction of data functions arisen from ^-scheme short-scan sin- gle-photon emission computed tomography（SPECT） with uniform attenuation, and the modified central slice theorem is developed. Numerical simulations are conducted to demonstrate the effec- tiveness of the developed method.
文摘采用三维激光扫描技术可有效地提高钦江双线特大桥的健康监测效率。利用Trimble Business Center软件对扫描的点云数据进行配准和去噪,并利用点云切片技术获取桥梁吊索的坐标信息和线形,从而实现对钦江双线特大桥的精确监测。研究结果显示,三维激光扫描技术具有快速、高效、可视化的特点,拓展了桥梁监测数据的表达形式,为相关研究提供了重要的参考依据。
