Jean-Michel Roger developed chemometric methods for the design of embedded and hand held NIR sensors. He focused is research on the robustness problem. He has been strongly involved in many European projects dedicated to fruit quality assessment by NIR spectroscopy. In 2003, simultaneously with Prof. Tom Fearn, he proposed a new generic method called External Parameter Orthogonalization (EPO) which permits to eliminate specific spectral effects from the NIRS calibration and thus to solve certain problems of robustness.  He is also involved in the design of portable or online spectrometers using filters technology. In this aim, he developed a method (CovSel) that allows to select wavelengths with regard to multiple responses. This method has been extensively applied to set up waste sorting machines. He is invested in the management of HelioSPIR, a French speaking society devoted to NIRS. He has created ChemHouse (https://chemproject.org/ChemHouse), a chemometrics research group.