Patents by Inventor Christophe Bernard
Christophe Bernard 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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Publication number: 20150015783Abstract: The present invention relates to a method for scaling a first channel, wherein the method comprises computing a low resolution second channel based on a transformation of the second channel with a transformation function used to transform high resolution channel into a low resolution channel; computing a correlation function between the low resolution second channel and the first channel; determining a predicted second channel having the high resolution from the low resolution second channel according to a prediction method; computing an high-pass second channel based on the difference between the second channel and the predicted second channel and based on the correlation function; determining a predicted first channel having the high resolution from the first channel according to the prediction method.Type: ApplicationFiled: August 18, 2014Publication date: January 15, 2015Inventors: Christophe Bernard, Vincent Varoquaux, Marc De Vulpillieres
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Publication number: 20140334726Abstract: A method for determining noise levels in a subband of an image. The method comprises receiving the subband of the image, defining block regions in at least two space domains of the subband, for each defined block region, identifying first wavelet coefficients associated with coordinate values in the at least two space domains in the defined block region, computing a correlation matrix between identified wavelet coefficients to determine the correlation between first wavelet coefficients according to the at least one color domain, computing second wavelet coefficients, the computation of second wavelet coefficients being based on the correlation matrix and the first wavelet coefficients, computing at least one noise level, the noise level computation being based on at least one second wavelet coefficient and providing the at least one noise level.Type: ApplicationFiled: May 7, 2013Publication date: November 13, 2014Inventors: Christophe Bernard, Sarah Lannes
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Publication number: 20140334743Abstract: A method for enhancing local contrast of an image. The method comprises receiving a component of an image, computing a wavelets decomposition of the received component into wavelet coefficients, determining at least three subsets of wavelets coefficients based on a first threshold, a second threshold and computed wavelet coefficients, modifying the determined at least three subsets by applying at least a sharpening transformation on wavelet coefficients of at least one subset in said at least three subsets, recombining the at least three subsets into final wavelet coefficients, and reconstructing a new component based on the final wavelet coefficients.Type: ApplicationFiled: May 7, 2013Publication date: November 13, 2014Inventors: Christophe Bernard, Sarah Lannes
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Patent number: 8879863Abstract: A method for determining noise levels in a subband of an image. The method comprises receiving the subband of the image, defining block regions in at least two space domains of the subband, for each defined block region, identifying first wavelet coefficients associated with coordinate values in the at least two space domains in the defined block region, computing a correlation matrix between identified wavelet coefficients to determine the correlation between first wavelet coefficients according to the at least one color domain, computing second wavelet coefficients, the computation of second wavelet coefficients being based on the correlation matrix and the first wavelet coefficients, computing at least one noise level, the noise level computation being based on at least one second wavelet coefficient and providing the at least one noise level.Type: GrantFiled: May 7, 2013Date of Patent: November 4, 2014Assignee: Qualcomm Technologies, Inc.Inventors: Christophe Bernard, Sarah Lannes
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Patent number: 8810727Abstract: A method for scaling a first channel of an image. The method comprises computing a low resolution second channel of the image based on a transformation of the second channel with a transformation function used to transform a high resolution channel into a low resolution channel; computing a correlation function between the low resolution second channel and the first channel; determining a predicted second channel having the high resolution from the low resolution second channel according to a prediction method; computing a high-pass second channel based on the difference between the second channel and the predicted second channel and based on the correlation function; and determining a predicted first channel having the high resolution from the first channel according to the prediction method.Type: GrantFiled: May 7, 2013Date of Patent: August 19, 2014Assignee: Qualcomm Technologies, Inc.Inventors: Christophe Bernard, Vincent Varoquaux, Marc De Vulpillieres
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Patent number: 8712191Abstract: When analyzing an image signal having pixel values defined on a sampling grid, the method detects at least one direction of regularity of the image signal in relation to a pixel of the sampling grid. This detection comprises computing a respective loss value associated with at least one direction in a set of directions, and selecting at least one direction of regularity by minimizing the loss value. The loss value associated with a direction (u, v), where u is a horizontal coordinate and v a vertical coordinate, has an axial loss component measuring variations of the pixel values in at least one linear array of pixels. This linear array is a horizontal array if |u/v|>1 and a vertical array if |u/v|<1.Type: GrantFiled: March 9, 2011Date of Patent: April 29, 2014Assignee: Zoran (France) S.A.Inventor: Christophe Bernard
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Publication number: 20140064380Abstract: For compressing a video signal, a local multiscale transform is applied to a frame of the video signal to obtain coefficient blocks. The coefficients of each block are distributed into a plurality of coefficient groups, and for at least one of the groups, a common exponent is determined for encoding the coefficients of the group, and respective mantissas are determined for quantizing the coefficients of the group in combination with the common exponent. Coding data including each exponent determined for a coefficient group and the mantissas quantizing the coefficients of the group in combination with this exponent are stored in an external frame buffer.Type: ApplicationFiled: September 27, 2013Publication date: March 6, 2014Applicant: ZORAN (FRANCE) S.A.Inventors: Stephane Mallat, Christophe Bernard
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Patent number: 8614569Abstract: The switched-mode power supply includes a switching cell having an inductive element with two connections and several individually selectable outputs, and in which the two connections of the inductive element are joined respectively to at least two of the individually selectable outputs. It is thus possible to generate and regulate at least two different voltages, one positive and one negative.Type: GrantFiled: March 24, 2008Date of Patent: December 24, 2013Assignee: ST-Ericsson SAInventors: Christophe Premont, David Chesneau, Christophe Bernard
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Patent number: 8588553Abstract: Input pixel values associated with input pixel positions having a first spacing along a direction are received and processed to determine output pixel values associated with output pixel positions having a second spacing along the direction, from respective combinations of input pixel values weighted by coefficients given by an interpolation function. In a downscaling operation, the second spacing is larger than the first spacing, and the weighting coefficients represent values of the interpolation function expanded spatially by an expansion factor equal to the ratio of the second spacing to the first spacing.Type: GrantFiled: November 27, 2009Date of Patent: November 19, 2013Assignee: Zoran (France) S.A.Inventor: Christophe Bernard
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Patent number: 8559499Abstract: For compressing a video signal, a local multiscale transform is applied to a frame of the video signal to obtain coefficient blocks. The coefficients of each block are distributed into a plurality of coefficient groups, and for at least one of the groups, a common exponent is determined for encoding the coefficients of the group, and respective mantissas are determined for quantizing the coefficients of the group in combination with the common exponent. Coding data including each exponent determined for a coefficient group and the mantissas quantizing the coefficients of the group in combination with this exponent are stored in an external frame buffer.Type: GrantFiled: October 26, 2007Date of Patent: October 15, 2013Assignee: Zoran (France) S.A.Inventors: Stéphane Mallat, Christophe Bernard
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Publication number: 20130249967Abstract: For estimating an illumination pattern generated by the plurality of light sources, a combination of contributions of the light sources is computed. The contribution of a light source comprises a combination of at least a first component, comprising a part of a reference profile aligned on a position of said light source, said part of the aligned reference profile extending within the illumination area, and a second component depending on a distance between the position of said light source and an edge of the illumination area.Type: ApplicationFiled: December 9, 2011Publication date: September 26, 2013Applicant: ZORAN (FRANCE) S.A.Inventor: Christophe Bernard
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Patent number: 8435352Abstract: An apparatus for coating a substrate using physical vapor deposition, including a vacuum chamber wherein a coil is placed for keeping an amount of conductive material in levitation and for heating and evaporating that material, using a varying electric current in the coil. Isolating member are placed in the coil to isolate the coil from the levitated material. The isolating member is part of a container made of non-conductive material. The container has one or more openings for guiding evaporated conductive material to the substrate to be coated. A method for coating a substrate using physical vapor deposition is also presented.Type: GrantFiled: April 27, 2006Date of Patent: May 7, 2013Assignee: Tata Steel Nederland Technology BVInventors: Johannes Alphonsus Franciscus Maria Schade Van Westrum, Laurent Christophe Bernard Baptiste, Gerardus Gleijm
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Publication number: 20130069975Abstract: The method comprises for a pixel of an output grid which is not on an input grid on which pixel values are received in an input signal: determining a loss value for each of a plurality of candidate interpolators by analyzing the pixel values of the input grid along a direction associated with the candidate interpolator; selecting at least one interpolator by minimizing the loss value; and determining an output pixel value. At least two interpolation modes are provided, including: a first mode in which one interpolator is selected and the output pixel value is deter mined as an interpolated value obtained by applying locally the selected interpolator to pixel values of the input grid; and a second mode in which more than one interpolator is selected and the output pixel value is determined as a weighted sum of a plurality of interpolated values obtained by applying locally the selected interpolators.Type: ApplicationFiled: March 9, 2011Publication date: March 21, 2013Applicant: ZORAN (FRANCE)Inventor: Christophe Bernard
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Publication number: 20130050272Abstract: For scaling an input image into an output image, the method comprises, for a point of the output sampling grid which is not in the input sampling grid: calculating a plurality of interpolated pixel values by applying respective interpolators; determining respective loss values associated with the interpolated pixel values; and providing a pixel value of the output image using at least one of the interpolated pixel values selected by minimizing the loss value.Type: ApplicationFiled: March 9, 2011Publication date: February 28, 2013Applicant: ZORAN (FRANCE)Inventor: Christophe Bernard
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Publication number: 20130051703Abstract: When analyzing an image signal having pixel values defined on a sampling grid, the method detects at least one direction of regularity of the image signal in relation to a pixel of the sampling grid. This detection comprises computing a respective loss value associated with at least one direction in a set of directions, and selecting at least one direction of regularity by minimizing the loss value. The loss value associated with a direction (u, v), where u is a horizontal coordinate and v a vertical coordinate, has an axial loss component measuring variations of the pixel values in at least one linear array of pixels. This linear array is a horizontal array |u/v|>1 and a vertical array |u/v|<1.Type: ApplicationFiled: March 9, 2011Publication date: February 28, 2013Applicant: ZORAN (FRANCE)Inventor: Christophe Bernard
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Publication number: 20120304293Abstract: A method of processing a user interface component is provided and includes receiving one or more user interface components that can be communicated to a wireless device. A component risk level for each of the one or more user interface components is determined and assigned to each of the one or more user interface components. Each of the one or more user interface components can be digitally signed using an embedded risk code that indicates the assigned risk level. Further, the component risk level can be selected from a plurality of component risk levels. In a particular embodiment, the component risk level can be determined based on the type of the user interface component. Further, the component risk level can be determined based on a developer of the user interface component.Type: ApplicationFiled: August 8, 2012Publication date: November 29, 2012Applicant: QUALCOMM INCORPORATEDInventors: Jason B. Kenagy, Marc Edward Nijdam, Christophe Bernard
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Patent number: 8270941Abstract: A method of processing a user interface component is provided and includes receiving one or more user interface components that can be communicated to a wireless device. A component risk level for each of the one or more user interface components is determined and assigned to each of the one or more user interface components. Each of the one or more user interface components can be digitally signed using an embedded risk code that indicates the assigned risk level. Further, the component risk level can be selected from a plurality of component risk levels. In a particular embodiment, the component risk level can be determined based on the type of the user interface component. Further, the component risk level can be determined based on a developer of the user interface component.Type: GrantFiled: February 24, 2006Date of Patent: September 18, 2012Assignee: QUALCOMM IncorporatedInventors: Jason B. Kenagy, Marc Edward Nijdam, Christophe Bernard
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Patent number: 8265161Abstract: A method and apparatus for processing or compressing an n-dimensional digital signal by constructing a sparse representation which takes advantage of the signal geometrical regularity. The invention comprises a warped wavelet packet transform which performs a cascade of warped subband filtering along warping grids of sampling points adapted to the signal geometry. It also comprises a bandeletisation which decorrelates the warped wavelet packet coefficients to produce a sparse representation. An inverse warped wavelet packet transform and an inverse bandeletisation reconstruct a signal from its bandelet representation. The invention comprises a compression system which quantizes and codes the bandelet representation, a decompression system, a restoration system which enhances a signal by filtering its bandelet representation, and a feature vector extraction system for pattern recognition applications of a bandelet representation.Type: GrantFiled: January 14, 2010Date of Patent: September 11, 2012Assignee: Zoran (France)Inventors: Christophe Bernard, Jerome Kalifa, Erwan Le Pennec, Stephane Mallat
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Patent number: 8229245Abstract: Video processing method and means for enhancing a video stream, by computing transform coefficients using a spatio-temporal transform comprising a spatial subband transform and a causal time wavelet transform performing filterings with multiscale causal wavelets, modifying the transform coefficients with a nonlinear processing, and computing a processed video stream from the modified transform coefficients using a spatio-temporal reconstruction transform comprising an inverse subband transform and a short delay inverse time wavelet transform, where the short delay inverse time wavelet transform is implemented with wavelet filters modified with window functions to control the processing delay of the entire video processing method.Type: GrantFiled: October 10, 2006Date of Patent: July 24, 2012Assignee: Zoran (France)Inventors: Stephane Mallat, Christophe Bernard, Joan Bruna, Nicolas Laveau
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Publication number: 20110311162Abstract: Input pixel values associated with input pixel positions having a first spacing along a direction are received and processed to determine output pixel values associated with output pixel positions having a second spacing along the direction, from respective combinations of input pixel values weighted by coefficients given by an interpolation function. In a downscaling operation, the second spacing is larger than the first spacing, and the weighting coefficients represent values of the interpolation function expanded spatially by an expansion factor equal to the ratio of the second spacing to the first spacing.Type: ApplicationFiled: November 27, 2009Publication date: December 22, 2011Inventor: Christophe Bernard