In this paper, short-wave infrared (SWIR), mid-wave infrared (MWIR) thermography, air-coupled ultrasonic C-scan (ACU) and X-ray radiography results were combined to retrieve differences between a painting on canvas constructed following the art master rules and an imitation. Advanced image processing techniques including pulsed phase thermography (PPT), principal component thermography (PCT) and partial least square thermography (PLST) were applied to the MWIR images in order to highlight the shapes of subsurface features. Interestingly, additional defects were also discovered since the samples were handmade. Finally, a comprehensive and comparative study of these techniques was conducted to summary their advantages and disadvantages.
Non-destructive investigation of paintings on canvas by infrared thermography, air-coupled ultrasound and x-ray radiography
Stefano Sfarra;
2017-01-01
Abstract
In this paper, short-wave infrared (SWIR), mid-wave infrared (MWIR) thermography, air-coupled ultrasonic C-scan (ACU) and X-ray radiography results were combined to retrieve differences between a painting on canvas constructed following the art master rules and an imitation. Advanced image processing techniques including pulsed phase thermography (PPT), principal component thermography (PCT) and partial least square thermography (PLST) were applied to the MWIR images in order to highlight the shapes of subsurface features. Interestingly, additional defects were also discovered since the samples were handmade. Finally, a comprehensive and comparative study of these techniques was conducted to summary their advantages and disadvantages.Pubblicazioni consigliate
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