Abstract: A method of photothermal analysis of a solid piece includes injecting heat into a region of a surface of the piece, called heating region, capturing a thermal analysis image of a detection region which is distinct from the heating region, then subtracting a reference image from the thermal analysis image. The reference image corresponds to a thermal emission distribution as caused by the injected heat for a case where the surface portion of the piece is without defects. Such method makes it possible to reduce an analysis cycle time for the piece, and to reduce a signal-to-noise ratio of images capable of revealing defects present in the surface portion of the piece.

Abstract: An incident wave is emitted into a medium comprising diffusers that can reflect the wave. Signals representing a reflected wave reverberated by the medium from the incident wave are captured, said captured signals being the sum of a simple diffusion component and a multiple diffusion component. The captured signals are treated by separating the multiple diffusion component from the simple diffusion component.

Abstract: A method for probing by wave propagation, in which an incident wave is emitted into a medium comprising diffusers that can reflect the wave. Signals representing a reflected wave reverberated by the medium from the incident wave are captured, said captured signals being the sum of a simple diffusion component and a multiple diffusion component. The captured signals are treated by separating the multiple diffusion component from the simple diffusion component.