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Heritage Science
Fig. 3 | Heritage Science

Fig. 3

From: Simulation-aided infrared thermography with decomposition-based noise reduction for detecting defects in ancient polyptychs

Fig. 3

a The drawing of the surface of the sample, b side view of sample A, c side view of sample B, and d position of defects in the samples (obtained by using computer-aided designs-CAD-software). In subfigures (b) and (c), the wood panels are shown in gray, the woven fibers in magenta, and the first and second plaster preparation layers are shown in blue and yellow, respectively

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