基于改进的层析成像图像重建ART算法的木材应力波检测研究

Wood Stresswave Detection Based on Improved Tomography Image Reconstruction Algorithim of ART

首先介绍了成像的物理基础,并对重建算法的各种方法进行了简要阐述并对ART算法及其改进算法进行了主要说明。在之前学者对成像原理的研究下,阐述了应力波层析成像技术应用于木材缺陷检测当中的原理及测试方法,并通过先验的介质模型及实际模型测试,分别用ART算法和改进后的重建算法得到木材缺陷图像,通过比较两种方法重建的图像清晰度,验证改进后算法的合理性与可行性。

This paper firstly introduces the physical basis of imaging,has a briefly introduction of various methods of reconstruction algorithms and the ART algorithm and its improved algorithm are illustrated.On this basis,combining the above study of imaging principle,expounds the principle and test method of stress-wave tomography technique which is applied to the wood defects detection,and through the medium model and actual test model,the image definition comparison of two methods of reconstruction verify the rationality and feasibility of this algorithm respectively by the reconstruction algorithm and improved ART algorithm to get the wood defect images.