Abstract: The invention relates to a method for processing a raw image acquired by a camera module having an optical transfer function, the method comprising the steps of: receiving an enlargement instruction indicative of a portion of the raw image to be enlarged forming an input image; performing an initial calculation of an estimated image, by deconvoluting the optical transfer function from the input image; iteratively implementing a processing loop comprising: calculating a current simulated image based on the current estimated image and the optical transfer function; determining a cost function; if a predetermined stopping criterion is reached, removing from the processing loop, and otherwise updating the estimated image based on the determined cost function; providing, at the output, a rendered image equal to the current estimated image.

Abstract: The invention relates to a method for analyzing a 3D video stream which is representative of a scene observed through an image capture device associated with a vehicle, the method being implemented by a computer and comprising, for each image of the 3D video stream, the steps of: for each object detected in the image, if the detected object is present in an inventory of previously detected objects: determining, for the image, a position and a speed of the object; and estimating a projected position of the object on the basis of the position and speed determined for the image, and for each object present in the object inventory and not detected in the image: updating a projected position depending on the speed of the object that was determined for the last image in which the object was detected.

Abstract: A method for determining depth information on a scene in a first image of said scene is disclosed herein. The method includes, for a target point of the scene in the first image, a processing phase that includes the following steps: identifying the target point in a second image of the scene, and calculating a depth associated with the target point according to a position of the target point in each of the first and second images. Identifying the target point in the second image includes comparing a previously calculated speed of the target point in the first image with a previously calculated speed of at least one point in the second image. A computer program, a device, a system, and a vehicle implementing such a method are also disclosed herein.

Abstract: A method for determining an item of information of an interface of an optical element including several interfaces, the method being implemented by a device having at least one optical sensor and at least one light source in order to make a beam pass through at least one of the interfaces and be reflected by the interface to be measured, and in order to detect a signal of interferences between the reflected beam and a reference beam is disclosed. The method also includes positioning of a coherence area at the level of an interface; at least two measurements of the interface in order to produce one interference image per measurement from respective interference signals; rotation of the optical element about a reference axis of the device between the measurements; and processing of the at least two images in order to obtain an item of information of the interface.

Abstract: A method for characterizing an optical lens that includes a stack of several optical elements and is intended to be associated with an image sensor for acquiring images, the method including determining, by optical measurement on the stack of optical elements, at least one data set (JG), referred to as geometric set, including data relating to at least one geometric parameter of at least one buried optical interface of the lens, digitally modeling the optical lens according to the geometric set, and determining, by an optical wave propagation digital simulator applied to the digital model, at least one matrix, referred to as aberration matrix, representative of optical aberrations introduced by the optical lens in an image. Also disclosed is a characterization device, an image acquisition method and device, and an imaging apparatus implementing such a method.

Abstract: A method for correcting at least one input image Ie into a rendered image IRk and then into a rendered image IR, each image originating from an optical sensor provided with photosites of different colors and being obtained through an optical imaging system, each sensor associated with an optical imaging system, the method involving: receiving each input image Ie, iteratively modifying the image IRk being rendered at different iterations k, by iteratively processing of a function E comprising two terms, i.e. a first term D, which depends on a comparison between each input image Ie and a result Ick of the image IRk being rendered at the iteration k reprocessed by information relating to the imaging system, and a second term P, which depends on anomalies or penalties or defects within the image IRk being rendered at the iteration k, until the function E is reduced.

Abstract: A method for correcting at least one input image Ie into an image IRk and then into an image IR, the input image originating from an optical sensor provided with photosites of different colors and being obtained through an optical imaging system, each sensor being associated with one system, the method involving receiving the input image Ie, iteratively modifying the image IRk being rendered at different iterations k, by iteratively processing a function E comprising two terms, i.e. a first term D, which depends on a comparison between the at least one input image Ie and a result Ick of the image IRk being rendered at the iteration k reprocessed by information relating to the imaging system, and a second term P, which depends on one or more anomalies or penalties or defects within the image IRk being rendered at the iteration k, until the function E is minimized.

Abstract: A method for characterizing an optical lens that includes a stack of several optical elements and is intended to be associated with an image sensor for acquiring images, the method including determining, by optical measurement on the stack of optical elements, at least one data set (JG), referred to as geometric set, including data relating to at least one geometric parameter of at least one buried optical interface of the lens, digitally modeling the optical lens according to the geometric set, and determining, by an optical wave propagation digital simulator applied to the digital model, at least one matrix, referred to as aberration matrix, representative of optical aberrations introduced by the optical lens in an image. Also disclosed is a characterization device, an image acquisition method and device, and an imaging apparatus implementing such a method.

Abstract: A method for acquiring an image with an apparatus including a camera module including an optical lens associated with an image sensor, the method including at least one iteration of an image acquisition phase by the apparatus including the following steps: capturing an image with the camera module; and correcting the captured image according to at least one correction matrix calculated, directly or indirectly, from at least one matrix, referred to as aberration matrix, determined for the optical lens, and representative of optical aberrations introduced by the optical lens in an image. Also disclosed are a characterization system and an imaging apparatus implementing such a method.

Abstract: A method for determining an item of information of an interface of an optical element including several interfaces, the method being implemented by a device having at least one optical sensor and at least one light source in order to make a beam pass through at least one of the interfaces and be reflected by the interface to be measured, and in order to detect a signal of interferences between the reflected beam and a reference beam is disclosed. The method also includes positioning of a coherence area at the level of an interface; at least two measurements of the interface in order to produce one interference image per measurement from respective interference signals; rotation of the optical element about a reference axis of the device between the measurements; and processing of the at least two images in order to obtain an item of information of the interface.

Abstract: A method for optical characterization of a target optical objective to be manufactured by stacking several optical elements, the method including a characterization phase of the following steps: determining an assembly including, for each element at least one characteristic parameter of the optical element; and providing, as a function of the assembly set, an estimated geometric set, including data relating to at least one geometric parameter of at least one optical interface of the stack, by a geometric characterization model trained beforehand with a database, called training database, of training sets constituted based on optical objectives with architecture identical to that of the target objective, and further relates to a device for geometric characterization of optical objectives implementing such a geometric characterization method and to a method and a system for the manufacture of optical objectives implementing such a characterization method or device.

Abstract: A method and related device for functional characterization, during manufacture or after manufacture, of a target optical objective including the following steps and performed after stacking the optical elements of the target objective: measuring, by optical interferometry, at least one measured optical set, including data relating to at least one geometric parameter of at least one optical interface; and providing, based on the at least one measured optical set, an estimated performance set including data relating to the performance of the target objective, by a characterization model previously trained. Also provided are a method and a system for manufacturing optical objectives implementing such a characterization method or device.

Abstract: A method for measuring an item of geometric information of an interface of an optical element including interfaces, with a device configured to direct a measurement beam towards the optical element so as to pass through at least one of the interfaces and be reflected by the interface and generate a reflected beam, to selectively detect an interference signal between the reflected beam and a reference beam, the method including positioning a coherence area at an interface; measuring the interface so as to produce interference signals; and processing the signals including constructing a mathematical interface based on a sub-set of interference signals, determining, based on the mathematical interface and an expected shape of the interface, an item of geometric information of the interface.

Abstract: A capacitive interface device, includes a detection surface with one or more first capacitive electrodes extending in a first direction (X), second capacitive electrodes extending in a second direction (Y), third capacitive electrodes arranged in a matrix between the second capacitive electrodes and facing the one or more first capacitive electrodes, and linking tracks electrically connected within the detection surface to a plurality of adjacent third capacitive electrodes.

Abstract: A method is provided for capacitive detection, implementing a plurality of electrodes capable of allowing the detection of objects in their proximity by capacitive coupling, and including a step of simultaneous polarization of at least a part of the electrodes with different excitation potentials, the excitation potentials being generated with respect to a reference potential such that the scalar product over a predetermined duration of at least two of these excitation potentials is zero or very much less than the scalar product of one and/or the other of these excitation potentials with itself over the predetermined duration. A device and an appliance implementing the method are also provided.

Abstract: A capacitive detection device includes: at least one capacitive measurement electrode; a current detector electrically referenced to a common ground; at least one alternating voltage excitation source electrically connected or coupled to a measurement input of the current detector and to the at least one capacitive measurement electrode; guard elements electrically connected or coupled to the measurement input of the current detector; power supply generation apparatus suitable for generating at least one secondary power supply source referenced to the electrical potential of the guard elements, the power supply generation apparatus also being arranged so as to have, within a frequency band extending from direct current, an impedance between the common ground and the guard elements with a reactive component of a capacitive or essentially capacitive type, or comparable to an open circuit.

Abstract: A capacitive interface device, includes a detection surface with one or more first capacitive electrodes extending in a first direction (X), second capacitive electrodes extending in a second direction (Y), third capacitive electrodes arranged in a matrix between the second capacitive electrodes and facing the one or more first capacitive electrodes, and linking tracks electrically connected within the detection surface to a plurality of adjacent third capacitive electrodes.

Abstract: The present invention relates to a method for filtering a measurement signal Mi resulting from a capacitive coupling between a measurement electrode and at least one object of interest, which comprises the steps of (i) generating a filtered signal Mo from the measurement signal Mi, with the application of an adaptive filtering function implementing a strength parameter Af depending on the measurement signal Mi at a preceding moment and an electrical noise, (ii) generating a derivative signal Der representative of variations of said filtered signal Mo, (iii) generating a compensated signal Moc, with a linear combination of said filtered signal Mo and said derivative signal Der. The invention also relates to an interface mechanism and an apparatus implementing the method.

Abstract: A method is provided for capacitive detection, implementing a plurality of electrodes capable of allowing the detection of objects in their proximity by capacitive coupling, and including a step of simultaneous polarization of at least a part of the electrodes with different excitation potentials, the excitation potentials being generated with respect to a reference potential such that the scalar product over a predetermined duration of at least two of these excitation potentials is zero or very much less than the scalar product of one and/or the other of these excitation potentials with itself over the predetermined duration. A device and an appliance implementing the method are also provided.