Time of flight interpolated synthetic aperture focusing technique
Time of flight interpolated synthetic aperture focusing technique
复制标题
飞行时间插值合成孔径聚焦技术
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
H. Gemmeke
中科院分区：
文献类型：
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作者：
N. Ruiter;E. Kretzek;M. Zapf;T. Hopp;H. Gemmeke
合成孔径聚焦技术（SAFT）允许快速数据采集和最佳聚焦图像。3D成像的计算负担很大，因为对于每个体素，必须计算每个获取的a扫描的延迟，例如对于N3个体素和N2个a扫描的延迟为O（N5）。对于波长较大的物体的三维重建，例如≥(100 λ)3，在当前的多核PC上计算一个体积需要几天的时间。如果采用声速的三维分布来校正延迟，计算时间会进一步增加。在这项工作中，提出了一种基于飞行时间插值的GPU实现（TOFI-SAFT），它将我们之前的声速校正SAFT的GPU实现加速了7到16分钟，而图像质量只有轻微的降低。
Synthetic Aperture Focusing Technique (SAFT) allows fast data acquisition and optimally focused images. The computational burden for 3D imaging is large as for each voxel the delay for each acquired A-scan has to be calculated, e.g. O(N5) for N3 voxels and N2 A-scans. For 3D reconstruction of objects which are large in terms of the wavelength, e.g. ≥ (100 λ)3, the computation of one volume takes several days on a current multicore PC. If the 3D distribution of the speed of sound is applied to correct the delays, the computation time increases further. In this work a time of flight interpolation based GPU implementation (TOFI-SAFT) is presented which accelerates our previous GPU implementation of speed of sound corrected SAFT by a factor of 7 to 16 min. with only minor reduction of image quality.
影响因子：
3.8
作者：
Duric, Nebojsa;Littrup, Peter;Glide, Carri
通讯作者：
Glide, Carri