Infrared and Laser Engineering, Volume. 53, Issue 6, 20240047(2024)

Monocular dynamic 3D active thermography based on joint laser scanning thermography

Baoyuan DENG1... Yunze HE1, Hongjin WANG1, Qun DENG2 and Yaonan WANG1 |Show fewer author(s)
Author Affiliations
  • 1College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
  • 2College of Electrical and Information Engineering, Zhejiang University of Technology, Hangzhou 310023, China
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    Figures & Tables(6)
    Schematic diagram of monocular dynamic 3D active thermography system configuration
    (a) Scanning thermogram sequence;(b) Calibration images, position of laser in visual image and infrared thermal image;(c) Position map; (d) Algorithm flow chart of monocular dynamic 3D active thermography algorithm;(e) 3D Reconstruction; (f) Temporal alignment data;(g) 3D shape registered with aligned surface temperature series
    Monocular dynamic 3D active thermography experimental system
    (a) Standard height test block; (b) Temperature images obtained from scanning thermography; (c) Laser line position image; (d) A column of heights obtained through calibration; (e) The three-dimensional contour reconstruction results of monocular dynamic three-dimensional thermal imaging of standard height test blocks; (f) Comparison of height measurement accuracy distribution between monocular dynamic 3D active thermography(D3DAT) and Cognex DS1101; (g) Comparison of height measurement accuracy distribution between monocular dynamic 3D active thermography and Cognex DS1101
    (a1) Real time display of the 1000 th frame scanned; (a2) 1300 th frame; (a3) 1700 th; (b1) Time series reconstruction results at laser excitation; (b2) 30 frames later; (b3) 70 frames later; (c1) TSR detection results; (c2) FFT amplitude; (c3) FFT phase; (c4) NMF; (c5) PCA; (c6) RPHF
    • Table 1. Comparison with current 3D active thermography

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      Table 1. Comparison with current 3D active thermography

      MethodRefs[9, 1416]Refs[17]Proposed
      Camera211
      Excitation221
      CalibrationTwiceTwiceTwice
      CaptureTwiceTwiceOnce
      RegistrationFeature-basedFeature-basedModel-based
      Heat sourceVariousVariousLaser only
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    Baoyuan DENG, Yunze HE, Hongjin WANG, Qun DENG, Yaonan WANG. Monocular dynamic 3D active thermography based on joint laser scanning thermography[J]. Infrared and Laser Engineering, 2024, 53(6): 20240047

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    Paper Information

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    Received: Jan. 30, 2024

    Accepted: --

    Published Online: Jul. 31, 2024

    The Author Email:

    DOI:10.3788/IRLA20240047

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