## 4 Conclusions  
The aim of this manuscript is to compare the abilities of a broadband MWIR (IR-B+C\({}^{\prime}\)) camera systems with the separate capabilities of an SWIR (IR-A) camera, MA-rFTIR spectroscopy and a regular MWIR (IR-C\({}^{\prime}\)) camera with respect to art work inspection. We inspected four different kinds of art work samples in order to perform the most known analyses. It is shown that both underdrawings and _penttimenti_ can be made visible when the lead white paint layers in between are not too thick. It is shown that the contrast is increased by performing active thermography analysis, with respect to the common IR-A reflectography when intermediate layers become thicker. This is shown within the Mondrian and Icon test samples. In addition, similar results as MA-rFTIR spectroscopy can be achieved for blue pigment characterisation as shown in the Icon test sample. Sub-layer investigation of the canvas and wood structures can be inspected significantly better with a combination of IR-B and IR-C\({}^{\prime}\) in contrast to IR-A or only IR-C\({}^{\prime}\) measurements. For example, canvas fibre structures can be evaluated without access to the back of the painting and wooden grain structures can be filtered from the art work on top. This might have a major potential in dendrographic analysis of painted wood panels. A conclusive advantage for wooden art work is the ability to detect delaminations in the sub-layers of a wooden part. This might give better insights into the need of restoration, but this information can also give a better understanding in the fabrication process and to detect falsifications. The _penttimenti_ and underdrawings give a better understanding of the process the artist went through when drawing the painting, which is useful information for historians and the general public. With this work, we can conclude that the use of a combined IR-B+C\({}^{\prime}\) camera system delivers a broad range of applications and complement with a variety of other well-established systems. Although their price is higher than a IR-A or IR-C\({}^{\prime}\) system, the union of both in an IR-B+C\({}^{\prime}\) system is more time efficient, compact and cheaper than the combination of the separate equipment.  
Figure 19: Active thermography results of the right marquetry after PCT analysis where the missing parts are obviously visible, but some border laminations occur as well.  
**Acknowledgments:** This research has been funded by the University of Antwerp and the Institute for the Promotion of Innovation by Science and Technology in Flanders (VLAIO) by the support to the TETRA project 'SINT: Smart Integration of Numerical modelling and Thermal inspection' with project number HBC.2017.0032. Furthermore, the research leading to these results has received funding from the Research Foundation Flanders (FWO) travel grant V4.010.16N and the Stimpro stimuli of UAntwerpen under project ID 32864. We would like to end with a special thanks to the MiViM research chair of Prof. [PERSON] and the support of the full team in supporting the preliminary measurements of this research.  
**Author Contributions:** [PERSON] and [PERSON] conceived and designed the experiments; [PERSON], [PERSON], [PERSON] and [PERSON] performed the experiments; [PERSON] and [PERSON] analysed the data; [PERSON], [PERSON] and [PERSON] contributed materials and analysis tools; [PERSON], [PERSON] and [PERSON] wrote the paper.  
**Conflicts of Interest:** The authors declare no conflict of interest. The founding sponsors had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, and in the decision to publish the results.