Improved image reconstruction based on ultrasonic transmitted wave computerized tomography on concrete
作者： Honghui Fan , Hongjin Zhu
DOI: 10.1186/S13640-018-0370-Y
关键词:
摘要: Considering the non-uniqueness and instability of concrete defect detection in construction engineering, ultrasonic time flight data maximum likelihood expectation maximization algorithm were proposed to improve readability reconstruction image. Ultrasonic transmitted waves reflect internal information when through structures. Measurement signals regularized processed as transit parameters. Maximum was optimized for image structure. The interpolation density measurement used images. experimental system, improved algorithm, method verified detail by using simulation phantoms. technique based on overcame disadvantages traditional method, it effective accuracy quality concrete. Time normalized discussed during reconstruction. results showed that could make position an abnormal object more obvious, accurate reflecting structure
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