Infrared and Laser Engineering, Volume. 53, Issue 6, 20240047(2024)
Monocular dynamic 3D active thermography based on joint laser scanning thermography
Fig. 1. Schematic diagram of monocular dynamic 3D active thermography system configuration
Fig. 2. (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
Fig. 3. Monocular dynamic 3D active thermography experimental system
Fig. 4. (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
Fig. 5. (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
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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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Received: Jan. 30, 2024
Accepted: --
Published Online: Jul. 31, 2024
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