Patents by Inventor Julien Vidal
Julien Vidal 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: 10414097Abstract: A method and tool for repairing a damaged zone of an aircraft radome, using the actual radome itself as a heating chamber to avoid resorting to an autoclave and the removal of certain parts of the radome which cannot withstand the curing temperature needed for the repair. The method for repairing a radome, wherein the radome comprises a composite panel exhibiting a double curvature forming a dome, the panel comprising at least one damaged zone, comprises the steps of closing an interior space of the panel using a cap to form a repair chamber. The surface of the panel forms the repair chamber containing the damaged zone. Another step is heating the space inside the repair chamber to form a heating chamber allowing the curing expected for repairing the damaged zone.Type: GrantFiled: June 14, 2017Date of Patent: September 17, 2019Assignees: Airbus Operations SAS, Airbus SASInventors: Julien Vidal, Bruno Marechal, Guillaume Ferrer, Jean-Claude Marty
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Publication number: 20170361537Abstract: A method and tool for repairing a damaged zone of an aircraft radome, using the actual radome itself as a heating chamber to avoid resorting to an autoclave and the removal of certain parts of the radome which cannot withstand the curing temperature needed for the repair. The method for repairing a radome, wherein the radome comprises a composite panel exhibiting a double curvature forming a dome, the panel comprising at least one damaged zone, comprises the steps of closing an interior space of the panel using a cap to form a repair chamber. The surface of the panel forms the repair chamber containing the damaged zone. Another step is heating the space inside the repair chamber to form a heating chamber allowing the curing expected for repairing the damaged zone.Type: ApplicationFiled: June 14, 2017Publication date: December 21, 2017Inventors: Julien VIDAL, Bruno MARECHAL, Guillaume FERRER, Jean-Claude MARTY
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Patent number: 9627564Abstract: An optoelectronic device comprising: a first conductive layer, a second conductive layer, an active layer between the first conductive layer and the second conductive layer, wherein the active layer comprises a submicrometer size structure of hexagonal type crystals of an element or alloy of elements selected from the carbon group.Type: GrantFiled: September 9, 2010Date of Patent: April 18, 2017Assignees: Electricite de France, Centre National de la Recherche Scientifique (CNRS), University of HoustonInventors: Jean-Francois Guillemoles, Par Olsson, Julien Vidal, Alexandre Freundlich
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Patent number: 9258490Abstract: An improved ghost-artifact detection and removal method for high-dynamic range (HDR) image creation and related apparatus are described. A binary ghost map is first generated for each image of the multiple input images by a ghost-artifact detection process, where one of the binary values indicate ghost pixels and the other indicates non-ghost pixels. Each binary ghost map is smoothed to generate a continuous-tone ghost map, by changing the pixel value of each non-ghost pixel of the binary map to a ghost value between the two binary values. The ghost value is calculated using a monotonous function of the distance between the non-ghost pixel of the binary map and the nearest ghost pixel. Ghost pixels in the binary ghost map are kept as fully ghost pixel in the continuous-tone ghost map. This method helps to reduce visibility of artifacts at ghost boundaries without losing small detected ghost regions.Type: GrantFiled: February 28, 2014Date of Patent: February 9, 2016Assignee: KONICA MINOLTA LABORATORY U.S.A., INC.Inventors: Michel Julien Vidal-Naquet, Alexis Bienvenu
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Patent number: 9185270Abstract: In high dynamic range (HDR) image creation, a ghost artifact detection method divides the images (brackets) into multiple tiles, and selects one bracket for each tile as the local reference bracket. The local reference brackets are selected via optimization of an objective function which includes both a component that measures exposure quality of individual tiles and a component that measures correlation between neighboring tiles. The minimization can be realized by constructing a graph for the objective function and calculating a minimum cut of the graph using a graph cut algorithm. Graph examples for three and four image sets are given. Ghost artifact detection is then performed on a tile-by-tile basis by using the local reference bracket for each tile. Ghost maps are generated this way and used for HDR image creation. This method minimizes artifacts due to inconsistencies in local reference bracket selection in areas involved in ghost-inducing objects.Type: GrantFiled: February 28, 2014Date of Patent: November 10, 2015Assignee: KONIA MINOLTA LABORATORY U.S.A., INC.Inventors: Alexis Bienvenu, Michel Julien Vidal-Naquet
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Publication number: 20150249774Abstract: In high dynamic range (HDR) image creation, a ghost artifact detection method divides the images (brackets) into multiple tiles, and selects one bracket for each tile as the local reference bracket. The local reference brackets are selected via optimization of an objective function which includes both a component that measures exposure quality of individual tiles and a component that measures correlation between neighboring tiles. The minimization can be realized by constructing a graph for the objective function and calculating a minimum cut of the graph using a graph cut algorithm. Graph examples for three and four image sets are given. Ghost artifact detection is then performed on a tile-by-tile basis by using the local reference bracket for each tile. Ghost maps are generated this way and used for HDR image creation. This method minimizes artifacts due to inconsistencies in local reference bracket selection in areas involved in ghost-inducing objects.Type: ApplicationFiled: February 28, 2014Publication date: September 3, 2015Applicant: KONICA MINOLTA LABORATORY U.S.A., INC.Inventors: Alexis Bienvenu, Michel Julien Vidal-Naquet
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Publication number: 20150249779Abstract: An improved ghost-artifact detection and removal method for high-dynamic range (HDR) image creation and related apparatus are described. A binary ghost map is first generated for each image of the multiple input images by a ghost-artifact detection process, where one of the binary values indicate ghost pixels and the other indicates non-ghost pixels. Each binary ghost map is smoothed to generate a continuous-tone ghost map, by changing the pixel value of each non-ghost pixel of the binary map to a ghost value between the two binary values. The ghost value is calculated using a monotonous function of the distance between the non-ghost pixel of the binary map and the nearest ghost pixel. Ghost pixels in the binary ghost map are kept as fully ghost pixel in the continuous-tone ghost map. This method helps to reduce visibility of artifacts at ghost boundaries without losing small detected ghost regions.Type: ApplicationFiled: February 28, 2014Publication date: September 3, 2015Applicant: KONICA MINOLTA LABORATORY U.S.A., INC.Inventors: Michel Julien Vidal-Naquet, Alexis Bienvenu
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Patent number: 8957984Abstract: A method for detecting ghost artifact in multiple images during high dynamic range (HDR image creation. For each pair of images, multiple individual consistency maps are generated by calculating a consistency function using moving windows of different sizes. The individual consistency maps are combined into a combined consistency map and then binarized. When combining the multiple individual consistency maps, they are first binarized using predetermined threshold values that are window-size-specific. The threshold values are developed beforehand using training images and machine leaning. The final binarized consistency map indicates whether the pair of images are consistent with each other at each pixel location. Then, a ghost-weight map is generated for each image based on the multiple final consistency maps. The ghost-weight map indicates the likelihood of each image pixel being ghost-inducing. The HDR image is generated using the set of images and the corresponding ghost-weight maps.Type: GrantFiled: June 30, 2013Date of Patent: February 17, 2015Assignee: Konica Minolta Laboratory U.S.A., Inc.Inventor: Michel Julien Vidal-Naquet
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Publication number: 20150002704Abstract: A method for detecting ghost artifact in multiple images during high dynamic range (HDR image creation. For each pair of images, multiple individual consistency maps are generated by calculating a consistency function using moving windows of different sizes. The individual consistency maps are combined into a combined consistency map and then binarized. When combining the multiple individual consistency maps, they are first binarized using predetermined threshold values that are window-size-specific. The threshold values are developed beforehand using training images and machine leaning. The final binarized consistency map indicates whether the pair of images are consistent with each other at each pixel location. Then, a ghost-weight map is generated for each image based on the multiple final consistency maps. The ghost-weight map indicates the likelihood of each image pixel being ghost-inducing. The HDR image is generated using the set of images and the corresponding ghost-weight maps.Type: ApplicationFiled: June 30, 2013Publication date: January 1, 2015Inventor: Michel Julien Vidal-Naquet
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Patent number: 8902328Abstract: A method for selecting an optimum subset of images from a larger set of images for optimal HDR image creation. For each of the set of images, an exposure quality map is computed by assigning, to each pixel of the image, an exposure quality value based on the pixel brightness value of that pixel. A suitable exposure quality function, typically reflecting the properties of the imaging device, is used for this purpose. Then, for each possible subset of images, the exposure quality maps for the images in the subset are combined using a max operation to generate a combined exposure quality map for the subset. An average pixel value of the combined exposure quality map of the subset is then calculated and serves as a quality score. The subset of images processing the highest quality score are used to generate the HDR image.Type: GrantFiled: March 14, 2013Date of Patent: December 2, 2014Assignee: Konica Minolta Laboratory U.S.A., Inc.Inventor: Michel Julien Vidal-Naquet
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Publication number: 20140267883Abstract: A method for selecting an optimum subset of images from a larger set of images for optimal HDR image creation. For each of the set of images, an exposure quality map is computed by assigning, to each pixel of the image, an exposure quality value based on the pixel brightness value of that pixel. A suitable exposure quality function, typically reflecting the properties of the imaging device, is used for this purpose. Then, for each possible subset of images, the exposure quality maps for the images in the subset are combined using a max operation to generate a combined exposure quality map for the subset. An average pixel value of the combined exposure quality map of the subset is then calculated and serves as a quality score. The subset of images processing the highest quality score are used to generate the HDR image.Type: ApplicationFiled: March 14, 2013Publication date: September 18, 2014Applicant: KONICA MINOLTA LABORATORY U.S.A., INC.Inventor: Michel Julien Vidal-Naquet
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Patent number: 8702929Abstract: A system that incorporates teachings of the present disclosure may include, for example, a solid-state selector having a vessel for carrying a liquid medium with one or more molecules surrounded by ions, a solid state conductive structure doped with impurities having one or more through-holes extending between two surfaces of the solid state conductive structure positioned within the liquid medium of the vessel, a voltage source coupled to the solid state conductive structure to selectively stimulate the ions surrounding the one or more molecules to pass through the one or more through-holes. Additional embodiments are disclosed.Type: GrantFiled: March 22, 2012Date of Patent: April 22, 2014Assignee: The Board of Trustees of the University of IllinoisInventors: Jean-Pierre Leburton, Gregory Timp, Maria E. Gracheva, Julien Vidal
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Publication number: 20130168725Abstract: An optoelectronic device comprising: a first conductive layer, a second conductive layer, an active layer between the first conductive layer and the second conductive layer, wherein the active layer comprises a submicrometer size structure of hexagonal type crystals of an element or alloy of elements selected from the carbon group.Type: ApplicationFiled: September 9, 2010Publication date: July 4, 2013Applicants: ELECTRICITE DE FRANCE, UNIVERSITY OF HOUSTON, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)Inventors: Jean-Francois Guillemoles, Par Olsson, Julien Vidal, Alexandre Freundlich
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Publication number: 20120175257Abstract: A system that incorporates teachings of the present disclosure may include, for example, a solid-state selector having a vessel for carrying a liquid medium with one or more molecules surrounded by ions, a solid state conductive structure doped with impurities having one or more through-holes extending between two surfaces of the solid state conductive structure positioned within the liquid medium of the vessel, a voltage source coupled to the solid state conductive structure to selectively stimulate the ions surrounding the one or more molecules to pass through the one or more through-holes. Additional embodiments are disclosed.Type: ApplicationFiled: March 22, 2012Publication date: July 12, 2012Applicant: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOISInventors: Jean-Pierre Leburton, Gregory Timp, Maria E. Gracheva, Julien Vidal
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Patent number: 8192600Abstract: A system that incorporates teachings of the present disclosure may include, for example, a solid-state selector having a vessel for carrying a liquid medium with one or more molecules surrounded by ions, a solid state conductive structure doped with impurities having one or more through-holes extending between two surfaces of the solid state conductive structure positioned within the liquid medium of the vessel, a voltage source coupled to the solid state conductive structure to selectively stimulate the ions surrounding the one or more molecules to pass through the one or more through-holes. Additional embodiments are disclosed.Type: GrantFiled: September 25, 2008Date of Patent: June 5, 2012Assignee: The Board of Trustees of the University of IllinoisInventors: Jean-Pierre Leburton, Gregory Timp, Maria E. Gracheva, Julien Vidal
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Publication number: 20090084688Abstract: A system that incorporates teachings of the present disclosure may include, for example, a solid-state selector having a vessel for carrying a liquid medium with one or more molecules surrounded by ions, a solid state conductive structure doped with impurities having one or more through-holes extending between two surfaces of the solid state conductive structure positioned within the liquid medium of the vessel, a voltage source coupled to the solid state conductive structure to selectively stimulate the ions surrounding the one or more molecules to pass through the one or more through-holes. Additional embodiments are disclosed.Type: ApplicationFiled: September 25, 2008Publication date: April 2, 2009Applicant: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOISInventors: JEAN-PIERRE LEBURTON, Gregory Timp, Maria E. Gracheva, Julien Vidal