Abstract: An ultrasound characterisation method of a medium comprising the steps of generating a series of incident ultrasound waves, measuring a canonical reflection matrix defined between the input emission base and an output reception base, determining a set of responses of the medium obtained from the canonical reflection matrix, at a plurality of frequencies and for several points in a region around a reference point, determination of a frequency correction law from the responses of the medium at the various points, the frequency correction law being adapted to the reference point and being determined at frequencies, determination of the corrected responses of the medium by applying the frequency correction law to the responses of the medium around the reference point and for the plurality of frequencies.

Abstract: Method for ultrasonic characterization of a medium, comprising a step of generating a series of incident ultrasonic waves, a step of generating an experimental reflection matrix Rui(t) defined between the emission basis (i) as input and a reception basis (u) as output, a step of determining a focused reflection matrix RFoc(rin, rout, ?t) of the medium between an input virtual transducer (TVin) calculated based on a focusing as input to the experimental reflection matrix and an output virtual transducer (TVout) calculated based on a focusing as output from the experimental reflection matrix, the responses of the output virtual transducer (TVout) being obtained at a time instant that is shifted by an additional delay ?t relative to a time instant of the responses of the input virtual transducer (TVin).

Abstract: A method for the optical characterization of a sample, by positioning the sample in a field of view of a first microscope objective located in an object arm of an interferometer; generating, by an illuminating device, a first plurality of Nin incident light waves; for each incident light wave of a given wavefront, acquiring a second plurality N? of interference signals, each interference signal resulting from the interference between a wave backscattered by the sample and a reference wave, the interference signals acquired according to one example for different N? frequencies; determining a polychromatic reflection matrix with all of the interference signals acquired for the Nin incident light waves and the N? frequencies; numerically determining, on the basis of the polychromatic reflection matrix, a focused bulk reflection matrix; determining, on the basis of this first focused bulk reflection matrix, at least one map having a physical parameter of the sample.

Abstract: Visual content of image(s)/video frame(s) may be captured through a lens of an image capture device. The optical characteristics of the lens may determine the field of view of the visual content and the distortion present within the visual content. Multiple selectable lenses may be provided to a user to modify the visual content. Multiple selectable lenses may include distortion consistency and field of view consistency between various selectable lenses. The visual content may be modified based on the selected lens to simulate capture of the visual content through the selected lens.

Abstract: An ultrasound characterisation method of a medium comprising the steps of generating a series of incident ultrasound waves, measuring a canonical reflection matrix defined between the input emission base and an output reception base, determining a set of responses of the medium obtained from the canonical reflection matrix, at a plurality of frequencies and for several points in a region around a reference point, determination of a frequency correction law from the responses of the medium at the various points, the frequency correction law being adapted to the reference point and being determined at frequencies, determination of the corrected responses of the medium by applying the frequency correction law to the responses of the medium around the reference point and for the plurality of frequencies.

Abstract: Visual content of image(s)/video frame(s) may be captured through a lens of an image capture device. The optical characteristics of the lens may determine the field of view of the visual content and the distortion present within the visual content. Multiple selectable lenses may be provided to a user to modify the visual content. Multiple selectable lenses may include distortion consistency and field of view consistency between various selectable lenses. The visual content may be modified based on the selected lens to simulate capture of the visual content through the selected lens.

Abstract: Device for dehumidifying a closed casing. The device for dehumidifying comprises a box comprising an inlet communicating with the interior of the closed casing and an outlet, a heating module able to be controlled to generate heat, a desiccant configured to adsorb moisture when it is not heated by the heating module and to return adsorbed moisture by desorption when it is heated by the heating module, a mobile plug able to be moved to alternately open and close the inlet and the outlet, a bias spring configured to move the mobile plug when the heating module does not heat the desiccant and a shape memory alloy spring configured to move the mobile plug when the heating module heats the desiccant, said shape memory alloy spring being able to be heated by the heating module at the same time as the desiccant.

Abstract: A device, for non-destructive testing of a mechanical part made of a polycrystalline material, includes: an ultrasonic probe including a two-dimensional array of transducers capable of emitting and receiving signals at different excitation angles; and a processing module suitable for controlling the emission and the reception of the transducers, for processing the signals received by the transducers so as to express the signals received by the ultrasonic probe in two planar wave planes constructed from the emission and reception wave vectors of the probe, and for deducing therefrom information representative of the three-dimensional orientation of the fiber structure of the mechanical part.

Abstract: This disclosure relates to a method for characterising a target object in a medium. The method comprises: obtaining a reference matrix F(q) associated with the target object, measuring a reflection matrix R associated with the probed medium, and projecting the reflection matrix R onto the reference matrix F(q) to estimate a probability P(q) that the object is in a state q.

Abstract: An ultrasound characterisation method of a medium comprising the steps of generating a series of incident ultrasound waves, measuring a canonical reflection matrix defined between the input emission base and an output reception base, determining a set of responses of the medium obtained from the canonical reflection matrix, at a plurality of frequencies and for several points in a region around a reference point, determination of a frequency correction law from the responses of the medium at the various points, the frequency correction law being adapted to the reference point and being determined at frequencies, determination of the corrected responses of the medium by applying the frequency correction law to the responses of the medium around the reference point and for the plurality of frequencies.

Abstract: Device for dehumidifying a closed casing. The device for dehumidifying comprises a box comprising an inlet communicating with the interior of the closed casing and an outlet, a heating module able to be controlled to generate heat, a desiccant configured to adsorb moisture when it is not heated by the heating module and to return adsorbed moisture by desorption when it is heated by the heating module, a mobile plug able to be moved to alternately open and close the inlet and the outlet, a bias spring configured to move the mobile plug when the heating module does not heat the desiccant and a shape memory alloy spring configured to move the mobile plug when the heating module heats the desiccant, said shape memory alloy spring being able to be heated by the heating module at the same time as the desiccant.

Abstract: Method for non-invasively characterizing a heterogeneous medium using ultrasound, comprising a step of generating a series of incident ultrasonic waves, a step of recording an experimental reflection matrix Rui(t) defined between the input emission basis (i) and an output reception basis (u), a step of determining a response REP(r,?r) of the medium between an input virtual transducer (TVin) calculated based on an input focusing of the experimental reflection matrix that creates an input focal spot around a first point (P1), and an output virtual transducer (TVout) calculated based on an output focusing of the experimental reflection matrix that creates an output focal spot around a second point (P2), said response being expressed as a function of a central point (PC) of spatial position (r) in the medium located midway between the first and second points (P1, P2).

Abstract: Method for ultrasonic characterization of a medium, including generating a series of incident ultrasonic waves, generating an experimental reflection matrix Rui(t) defined between the emission basis (i) as input and a reception basis (u) as output, and determining a focused reflection matrix RFoc(rin, rout, ?t) of the medium between an input virtual transducer (TVin) calculated based on a focusing as input to the experimental reflection matrix and an output virtual transducer (TVout) calculated based on a focusing as output from the experimental reflection matrix, the responses of the output virtual transducer (TVout) being obtained at a time instant that is shifted by an additional delay ?t relative to a time instant of the responses of the input virtual transducer (TVin).

Abstract: Method for non-invasively characterizing a heterogeneous medium using ultrasound, comprising a step of generating a series of incident ultrasonic waves, a step of recording an experimental reflection matrix Rui(t) defined between the input emission basis (i) and an output reception basis (u), a step of determining a response REP(r, ?r) of the medium between an input virtual transducer (TVin) calculated based on an input focusing of the experimental reflection matrix that creates an input focal spot around a first point (P1), and an output virtual transducer (TVout) calculated based on an output focusing of the experimental reflection matrix that creates an output focal spot around a second point (P2), said response being expressed as a function of a central point (PC) of spatial position (r) in the medium located midway between the first and second points (P1, P2).

Abstract: Method for ultrasonic characterization of a medium, comprising a step of generating a series of incident ultrasonic waves, a step of generating an experimental reflection matrix Rui(t) defined between the emission basis (i) as input and a reception basis (u) as output, a step of determining a focused reflection matrix RFoc(rin, rout, ?t) of the medium between an input virtual transducer (TVin) calculated based on a focusing as input to the experimental reflection matrix and an output virtual transducer (TVout) calculated based on a focusing as output from the experimental reflection matrix, the responses of the output virtual transducer (TVout) being obtained at a time instant that is shifted by an additional delay ?t relative to a time instant of the responses of the input virtual transducer (TVin).

Abstract: Method and system for ultrasonic characterization of a medium Method for ultrasonic characterization of a medium, comprising generating a series of incident ultrasonic waves, generating an experimental reflection matrix Rui(t) defined between the emission basis (i) as input and a reception basis (u) as output, determining a focused reflection matrix RFoc(rin, rout, at) of the medium between an input virtual transducer (Win) calculated based on a focusing as input to the experimental reflection matrix and an output virtual transducer (TVout) calculated based on a focusing as output from the experimental reflection matrix, the responses of the output virtual transducer (TVout) being obtained at a time instant that is shifted by an additional delay 6t relative to a time instant of the responses of the input virtual transducer (TVin).

Abstract: Method for ultrasonic characterization of a medium, comprising generating a series of incident ultrasonic waves, generating an experimental reflection matrix Rui(t) defined between the emission basis (i) as input and a reception basis (u) as output, and determining a focused reflection matrix RFoc(rin, rout, ?t) of the medium between an input virtual transducer (TVin) calculated based on a focusing as input to the experimental reflection matrix and an output virtual transducer (TVout) calculated based on a focusing as output from the experimental reflection matrix, the responses of the output virtual transducer (TVout) being obtained at a time instant that is shifted by an additional delay ?t relative to a time instant of the responses of the input virtual transducer (TVin).

Abstract: Method for ultrasonic characterization of a medium, comprising generating a series of incident ultrasonic waves, generating an experimental reflection matrix Rui(t) defined between the emission basis (i) as input and a reception basis (u) as output, and determining a focused reflection matrix RFoc(rin, rout, ?t) of the medium between an input virtual transducer (TVin) calculated based on a focusing as input to the experimental reflection matrix and an output virtual transducer (TVout) calculated based on a focusing as output from the experimental reflection matrix, the responses of the output virtual transducer (TVout) being obtained at a time instant that is shifted by an additional delay ?t relative to a time instant of the responses of the input virtual transducer (TVin).

Abstract: A device, for non-destructive testing of a mechanical part made of a polycrystalline material, includes: an ultrasonic probe including a two-dimensional array of transducers capable of emitting and receiving signals at different excitation angles; and a processing module suitable for controlling the emission and the reception of the transducers, for processing the signals received by the transducers so as to express the signals received by the ultrasonic probe in two planar wave planes constructed from the emission and reception wave vectors of the probe, and for deducing therefrom information representative of the three-dimensional orientation of the fiber structure of the mechanical part.

Abstract: A communication network includes an access point, a control unit in communication with the access point, a wave shaping device in communication with the control unit, and a wireless communication device. The control unit determines parameters of the wave shaping device, the parameters being search parameters if the control unit does not receive a pilot signal, and optimization parameters if the control unit receives a pilot signal.