工业CT几何参数求解方法研究

打开文本图片集

中图分类号：TP391.4 文献标识码：A 文章编号：2096-4706（2025）22-0184-05

Research on Geometric Parameter Determination Methods for Industrial CT

DUAN Cunli'， HU Jitao1， ZHOU Shuming'， ZHAO Changgu1，WANG Zhongren² （1.Dongguan Good Vision Precision Instrument Co.，Ltd.，Dongguan 523ooo，China; 2.SchoolofMechanical Engineering，Hubei UniversityofArtsand Science，Xiangyang 441o53，China）

Abstract： The imaging quality and measurement accuracy of industrial Computed Tomography （CT） technology are highlydependentontegeometricparametersofitssystem.Aimingat tiskeyproblem，ageometriccorrectionmethod based on thecombinationofphantomandimage processingis proposed.Firstly，the standard phantomimage iscolectedtosolvethe distance fromtheX-raysourcetotherotationaxis，thedistancefromtheX-raysourcetothedetector，andtheverticaloffsetof thedetector.Secondlytheself-calibrationmethodbasedonimagesharpnessisusedtosolethehorzontalofsetandn-plane rotationangleofthedetectorTheexperimentalresultsshowthattheproposed geometriccorrectiomethodcanaccuratelysolve various geometric posedeviation parameters inindustrialCTsystem.Thequalityof thereconstructed image aftercorrectionis significantlyimproed，andtegeometricatifactsareeectivelysuppressdAtteetie，teaverageeroftlball diameter measurement isreduced from 30.7μm to 10.9μm ，indicating that the method can meet the requirements of the actual industrial CT system for geometric accuracy correction.

Keywords： industrial CT; geometric parameter; standard phantom; self-calibration

0 引言

工业计算机断层扫描（CT）技术是工业领域的一项先进无损检测技术[]。（剩余6856字）