Lobera Julia, Ortega Gloria, García Inmaculada, Arroyo María del Pilar, Garzón Ester M
Opt Express. 2015 Feb 23;23(4):4021-32. doi: 10.1364/OE.23.004021.
Optical Diffraction Tomography has been recently introduced in fluid velocimetry to provide three dimensional information of seeding particle locations. In general, image reconstruction methods at visible wavelengths have to account for diffraction. Linear approximation has been used for three-dimensional image reconstruction, but a non-linear and iterative reconstruction method is required when multiple scattering is not negligible. Non-linear methods require the solution of the Helmholtz equation, computationally highly demanding due to the size of the problem. The present work shows the results of a non-linear method customized for spherical particle location using GPU computing and a made-to-measure storing format.
光学衍射层析成像技术最近被引入流体测速领域，以提供种子粒子位置的三维信息。一般来说，可见光波长下的图像重建方法必须考虑衍射。线性近似已被用于三维图像重建，但当多次散射不可忽略时，则需要一种非线性迭代重建方法。非线性方法需要求解亥姆霍兹方程，由于问题规模较大，计算要求很高。本文展示了一种针对球形粒子定位定制的非线性方法的结果，该方法使用GPU计算和特制的存储格式。
