Patents by Inventor Laurent Alacoque
Laurent Alacoque has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9860449Abstract: The invention relates to a method wherein at least one output signal of a movement sensor (105; 505) is taken into account for the potential division of an integrating period (T; T?) of an image sensor (101; 501) into a plurality of sub-periods (Ti; Ti?).Type: GrantFiled: December 17, 2013Date of Patent: January 2, 2018Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Fabien Gavant, Laurent Alacoque
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Patent number: 9791322Abstract: A measurement circuit for a resistive sensor comprises an integrator of information representative of the difference between a current passing through the sensor and a first reference current, and a circuit for making the output of the integrator depend on a reference level.Type: GrantFiled: December 1, 2014Date of Patent: October 17, 2017Assignee: COMMISSARIAT À L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventor: Laurent Alacoque
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Publication number: 20160320241Abstract: The invention relates to a measurement circuit for a resistive sensor (2), comprising: an integrator (5) of information representative of the difference between a current (Ibol) passing through the sensor and a first reference current (Id); and a circuit (22, 24) for making the output of the integrator depend on a reference level (Vref5).Type: ApplicationFiled: December 1, 2014Publication date: November 3, 2016Inventor: Laurent ALACOQUE
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Patent number: 9355434Abstract: The invention relates to a method for generating super-resolution images using a processing device, the method includes: oversampling an input image to generate an oversampled image; modifying the pixel value of a first pixel of the oversampled image by: generating a similarity value for each one of a plurality of candidate pixels in the input image and/or in one or more other input images, candidate pixels being selected based on the position of the first pixel in the oversampled image, similarity value being generated by evaluating the similarity of a group of pixels adjacent to each of the candidate pixels to a group of pixels adjacent to the first pixel; selecting a first subset of candidate pixels on the basis of similarity values, and generating the modified pixel value of the first pixel based on the pixel values and on the similarity values of the first subset of candidate pixels.Type: GrantFiled: August 5, 2013Date of Patent: May 31, 2016Assignee: Commissariat à l'énergie atomique et aux énergies alternativesInventors: Antoine Dupret, Laurent Alacoque, Tien Ho Phuoc
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Publication number: 20150334304Abstract: The invention relates to a method wherein at least one output signal of a movement sensor (105; 505) is taken into account for the potential division of an integrating period (T; T?) of an image sensor (101; 501) into a plurality of sub-periods (Ti; Ti?).Type: ApplicationFiled: December 17, 2013Publication date: November 19, 2015Inventors: Fabien GAVANT, Laurent ALACOQUE
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Publication number: 20150213579Abstract: The invention relates to a method for generating a super-resolution image by means of a processing device, the method including the following steps: oversampling an input image in order to generate an oversampled image; and modifying the pixel value of a first pixel of the oversampled image by means of the following steps: generating a similarity value for each one of a plurality of candidate pixels in the input image and/or in one or more other input images, the candidate pixels being selected based on the position of the first pixel in the oversampled image, the similarity value being generated by evaluating the similarity of a group of pixels adjacent to each one of the candidate pixels to a group of pixels adjacent to the first pixel; selecting a first subset of candidate pixels on the basis of the similarity values, and generating the modified pixel value of the first pixel based on the pixel values and on the similarity values of the first subset of candidate pixels.Type: ApplicationFiled: August 5, 2013Publication date: July 30, 2015Inventors: Laurent Alacoque, Tien Ho Phuoc, Antoine Dupret
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Patent number: 8873847Abstract: A method of demosaicing a digital raw image in the form of a matrix of pixels, each dedicated to a single color among several predetermined colors from color filters, includes obtaining a color digital image of the same resolution as the raw image and in which each pixel results from corresponding pixels in a luminance image and in chrominance images reconstructed from the raw image, transformation of the raw image by applying local convolution kernels to its pixels, taking into account neighboring pixels of different colors, to obtain an image of low frequency coefficients using a low frequency local kernel and images of high frequency coefficients using high frequency local kernels; reconstruction of the luminance image using at least the image of low frequency coefficients; reconstruction of the chrominance images using the images of high frequency coefficients.Type: GrantFiled: September 2, 2011Date of Patent: October 28, 2014Assignee: Commissariat a l'energie atomique et aux energies alternativesInventor: Laurent Alacoque
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Patent number: 8787455Abstract: A method for entropic transcoding of a first sequence of binary data of words to transcode into a second compressed sequence of binary data uses a predetermined entropic code involving a variable-length of the encoded words to transcode each word of the first sequence of binary data into a transcoded word. Based on a predetermined number B of low-order bits, the method includes application to each word of the first sequence of binary data: subdivision of the word into first and second subwords, wherein the first subword includes the B low-order bits of the word, and the second subword includes the other high-order bits of the word, application of the predetermined entropic code to the second subword to obtain a second transcoded subword, and obtaining the transcoded word by concatenation of the first subword and of the second transcoded subword.Type: GrantFiled: September 4, 2009Date of Patent: July 22, 2014Assignee: Commissariat a l'Energie Atomique et aux Energies AlternativesInventor: Laurent Alacoque
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Patent number: 8531544Abstract: A method of block-encoding a raster image by successive two-dimensional decompositions of blocks of the image in a base of functions using a combined application of a one-dimensional kernel of vertical decomposition of n pixels and of a one-dimensional kernel of horizontal decomposition of p pixels. In the method the horizontal dimension P of each block is determined as a multiple of p, P=k·p, and a decomposition at logp(P) level(s) of resolution is accomplished using the horizontal decomposition kernel, and the vertical dimension N of each block is determined as a multiple of n, N=l·n, and a decomposition at logp(N) level(s) of resolution is accomplished using the vertical decomposition kernel. For given values of n and p, the values of k and l are chosen such that the vertical dimension N is strictly less than the horizontal dimension P.Type: GrantFiled: September 4, 2009Date of Patent: September 10, 2013Assignee: Commissariat a l'Energie Atomique et aux Energies AlternativesInventor: Laurent Alacoque
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Publication number: 20120063682Abstract: A method of demosaicing a digital raw image in the form of a matrix of pixels, each dedicated to a single color among several predetermined colors from color filters, includes obtaining a color digital image of the same resolution as the raw image and in which each pixel results from corresponding pixels in a luminance image and in chrominance images reconstructed from the raw image, transformation of the raw image by applying local convolution kernels to its pixels, taking into account neighboring pixels of different colors, to obtain an image of low frequency coefficients using a low frequency local kernel and images of high frequency coefficients using high frequency local kernels; reconstruction of the luminance image using at least the image of low frequency coefficients; reconstruction of the chrominance images using the images of high frequency coefficients.Type: ApplicationFiled: September 2, 2011Publication date: March 15, 2012Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENE ALTInventor: Laurent ALACOQUE
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Publication number: 20110141310Abstract: A method of block-encoding a raster image by successive two-dimensional decompositions of blocks of the image in a base of functions using a combined application of a one-dimensional core of vertical decomposition of n pixels and of a one-dimensional core of horizontal decomposition of p pixels. In the method the horizontal dimension P of each block is determined as a multiple of p, P=k·p, and a decomposition at logp(P) level(s) of resolution is accomplished using the horizontal decomposition core, and the vertical dimension N of each block is determined as a multiple of n, N=l·n, and a decomposition at logp(N) level(s) of resolution is accomplished using the vertical decomposition core. For given values of n and p, the values of k and l are chosen such that the vertical dimension N is strictly less than the horizontal dimension P.Type: ApplicationFiled: September 4, 2009Publication date: June 16, 2011Applicant: Commiss.a l'energie atom. et aux energies alterInventor: Laurent Alacoque
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Publication number: 20110134258Abstract: A method for entropic transcoding of a first sequence of binary data of words to transcode into a second compressed sequence of binary data uses a predetermined entropic code involving a variable-length of the encoded words to transcode each word of the first sequence of binary data into a transcoded word. Based on a predetermined number B of low-order bits, the method includes application to each word of the first sequence of binary data: subdivision of the word into first and second subwords, wherein the first subword includes the B low-order bits of the word, and the second subword includes the other high-order bits of the word, application of the predetermined entropic code to the second subword to obtain a second transcoded subword, and obtaining the transcoded word by concatenation of the first subword and of the second transcoded subword.Type: ApplicationFiled: September 4, 2009Publication date: June 9, 2011Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENE ALTInventor: Laurent Alacoque
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Patent number: 7274222Abstract: Method for controlling an analogue switch including a transistor to which a variable analogue input voltage Vin is applied on a first terminal between a source terminal and a drain terminal of the transistor while a second terminal between the drain and the source terminal is at a variable output voltage VST, including the steps of: during a first phase, applying a first voltage to the transistor gate, the first voltage equal to a sum of or a difference between Vin and a first constant potential V1, and configured to make the transistor conduct; and during a second phase, applying a second voltage to the transistor gate, the second voltage equal to a sum of or a difference between VST, Vin and a second constant potential V2, and configured to block the transistor, the difference between the first voltage and the second voltage being constant.Type: GrantFiled: June 10, 2005Date of Patent: September 25, 2007Assignee: Commissariat a l'Energie AtomiqueInventors: Laurent Alacoque, Dominique Morche, Marc Belleville
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Publication number: 20050275448Abstract: The invention relates to a method for controlling an analogue switch comprising a transistor, to which an input voltage Vin is applied, wherein: during a first phase, a first voltage, function of Vin and of a first potential V1, and that can make the transistor conduct, is applied to the transistor gate during a second phase, a second voltage, function of Vin and of a second potential V2, and that can block the transistor, is applied to the transistor gate, the difference between first voltage and second voltage being independent of Vin.Type: ApplicationFiled: June 10, 2005Publication date: December 15, 2005Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUEInventors: Laurent Alacoque, Dominique Morche, Marc Belleville