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- Infrared and Laser Engineering
- Vol. 49, Issue 7, 20190505 (2020)

Fig. 1. Flowchart for solving coefficient vector β best by TRR algorithm

Fig. 2. Schematic diagram of test specimen

Fig. 3. Fitted background image with 10th frame thermographic data of the original thermal image sequence

Fig. 4. Comparison graph of image data in line 195 before and after TRR algorithm processing

Fig. 5. Images of experimental results

Fig. 6. Results of defect segmentation
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Table 1. Background fitting function coefficients of the 10th frame infrared image

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