一种利用数字全息成像测量粒子周长的方法

发布时间：2018-04-24 03:24

本文选题：粒子周长测量 + 数字全息　；参考：《现代电子技术》2017年13期

【摘要】：为了实现粒子周长的自动测量,提出一种利用数字全息成像测量粒子周长的方法。首先,介绍了数字全息成像的基本理论。接着,给出了实验装置的结构图,并对全息再现中的自动聚焦算法进行深入研究,提出一种改进的基于小波变换的自动聚焦算法。最后,在全息再现像图像分割的基础上给出粒子周长测量的具体方法。实验结果表明,测量的海洋浮游生物周长尺寸为17.918 mm,相对误差为3.51%。这种粒子周长测量方法基本满足粒子周长测量的稳定可靠、精度高、抗干扰能力强等要求,对其他粒子形态特征参数的测量研究也具有重要的借鉴意义。
[Abstract]:In order to realize the automatic measurement of particle circumference, a method of measuring particle circumference using digital holographic imaging is proposed. Firstly, the basic theory of digital holographic imaging is introduced. Then, the structure diagram of the experimental device is given, and the auto-focusing algorithm in holographic reconstruction is deeply studied, and an improved auto-focusing algorithm based on wavelet transform is proposed. Finally, based on the segmentation of holographic reconstructed image, the measurement method of particle circumference is given. The experimental results show that the circumference of marine plankton is 17.918 mm and the relative error is 3.51 mm. This method basically meets the requirements of stable and reliable measurement, high precision and strong anti-interference ability of particle circumference measurement. It is also of great significance for the study of other particle shape characteristic parameters.
【作者单位】：陆军装备部;中国人民解放军63981部队;北京理工大学材料学院;中国海洋大学电子系;
【基金】：863计划(2010AA092205)
【分类号】：O438.1;TP391.41

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