Patents by Inventor Aymeric Perchant
Aymeric Perchant 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: 8808171Abstract: An endoscopy device includes several light guides (1, 2, 3), each light guide having one or more optical fibers. The light guides are coupled with a sweeping system (4) arranged to direct an excitation light beam in alternation in one of the fibers of the guides from the proximal end of the guide including the one of the fibers. In this way, the proximal ends of the guides may make use of the same sweeping system, whereas the distal ends of the guides may be installed simultaneously in different zones of interest of an object or animal (10) under study for an almost simultaneous observation of the zones of interest. The invention also relates to an endoscopy method used in a device according to the invention. A device and a method according to the invention may be applied to quasi-simultaneous reflectance, fluorescence, multi-photon imaging of several areas of interest.Type: GrantFiled: May 11, 2007Date of Patent: August 19, 2014Assignee: Mauna Kea TechnologiesInventors: Francois Lacombe, Bertrand Viellerobe, Nicolas Boularot, Francois Doussoux, Aymeric Perchant
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Patent number: 8718398Abstract: A method to process an image acquired through an optical-fiber guide includes acquiring a first reference image through the optical-fiber guide, acquiring a second calibration image through the optical-fiber guide, spatially identifying each fiber of the optical-fiber guide of the second calibration image in a first detection map, acquiring a recalibration image through the optical-fiber guide, determining a geometrical transformation to make the recalibration image coincide with the first reference image, deriving a new detection map spatially identifying each fiber of the optical-fiber guide of the recalibration image, wherein the new detection map is derived using the geometrical transformation and the first detection map, and individually processing zones of an acquired image corresponding to each fiber of the optical-fiber guide using the new detection map.Type: GrantFiled: December 28, 2009Date of Patent: May 6, 2014Assignee: Mauna Kea TechnologiesInventors: Aymeric Perchant, Nicolas Savoire
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Patent number: 8600134Abstract: A method for processing images acquired in real time through a medical device, said images being loaded into a buffer, comprising the steps of: stopping the loading of the images into the buffer, processing loaded images using an incremental algorithm, displaying successively intermediate results of the processing, resuming the loading and stopping the processing based on an evaluation of said intermediate results.Type: GrantFiled: January 29, 2010Date of Patent: December 3, 2013Assignee: Mauna Kea TechnologiesInventors: Tom Vercauteren, Aymeric Perchant, Francois Lacombe, Nicolas Savoire
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Patent number: 8218901Abstract: A method for mosaicing frames from a video sequence is disclosed. Each frame is constituted by a point cloud, and each point in the point cloud is potentially acquired at a different time. The method involves compensating for motion and motion distortion due to acquisition time differences in each frame, applying a global optimization of inter-frame registration to align consistently the frames, and applying a reconstruction algorithm on the registered frames to construct a mosaic.Type: GrantFiled: July 8, 2011Date of Patent: July 10, 2012Assignee: Institut National de Recherche en Informatique et en AutomatiqueInventors: Tom Vercauteren, Aymeric Perchant, Nicholas Ayache, Xavier Pennec, Gregoire Malandain
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Publication number: 20110274325Abstract: A method for processing images acquired in real time through a medical device, said images being loaded into a buffer, comprising the steps of: stopping the loading of the images into the buffer, processing loaded images using an incremental algorithm, displaying successively intermediate results of the processing, resuming the loading and stopping the processing based on an evaluation of said intermediate results.Type: ApplicationFiled: January 29, 2010Publication date: November 10, 2011Applicant: MAUNA KEA TECHNOLOGIESInventors: Tom Vercauteren, Aymeric Perchant, Francois Lacombe, Nicolas Savoire
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Publication number: 20110261262Abstract: The present invention concerns a mosaicing method taking into account motion distortions, irregularly sampled frames and non-rigid deformations of the imaged tissue. The invention relates to a method for mosaicing frames from a video sequence acquired from a scanning device such as a scanning microscope, the method comprising the steps of: a) compensating for motion and motion distortion due to the scanning microscope, b) applying a global optimisation of inter-frame registration to align consistently the frames c) applying a construction algorithm on the registered frames to construct a mosaic, and d) applying a fine frame-to-mosaic non rigid registration. The method is based on a hierarchical framework that is able to recover a globally consistent alignment of the input frames, to compensate for the motion distortions and to capture the non-rigid deformations.Type: ApplicationFiled: July 8, 2011Publication date: October 27, 2011Applicants: INSTITUT NATIONAL DE RECHERCHE EN INFORMATIQUE ET EN AUTOMATIQUE, MAUNA KEA TECHNOLOGIESInventors: Tom Vercauteren, Aymeric Perchant, Nicholas Ayache, Xavier Pennec, Gregoire Malandain
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Publication number: 20110254980Abstract: A method to process an image acquired through an optical-fiber guide includes acquiring a first reference image through the optical-fiber guide, acquiring a second calibration image through the optical-fiber guide, spatially identifying each fiber of the optical-fiber guide of the second calibration image in a first detection map, acquiring a recalibration image through the optical-fiber guide, determining a geometrical transformation to make the recalibration image coincide with the first reference image, deriving a new detection map spatially identifying each fiber of the optical-fiber guide of the recalibration image, wherein the new detection map is derived using the geometrical transformation and the first detection map, and individually processing zones of an acquired image corresponding to each fiber of the optical-fiber guide using the new detection map.Type: ApplicationFiled: December 28, 2009Publication date: October 20, 2011Applicant: MAUNA KEA TECHNOLOGIESInventors: Aymeric Perchant, Nicolas Savoire
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Patent number: 7978932Abstract: A mosaicing method taking into account motion distortions, irregularly sampled frames and non-rigid deformations of the imaged tissue. The method for mosaicing frames from a video sequence acquired from a scanning device such as a scanning microscope, includes the steps of: a) compensating for motion and motion distortion due to the scanning microscope, b) applying a global optimization of inter-frame registration to align consistently the frames c) applying a construction algorithm on the registered frames to construct a mosaic, and d) applying a fine frame-to-mosaic non rigid registration. The method is based on a hierarchical framework that is able to recover a globally consistent alignment of the input frames, to compensate for the motion distortions and to capture the non-rigid deformations.Type: GrantFiled: August 2, 2007Date of Patent: July 12, 2011Assignees: Mauna Kea Technologies, Institut National de Recherche En Informatique Et En AutomatiqueInventors: Tom Vercauteren, Aymeric Perchant, Nicholas Ayache, Xavier Pennec, Gregoire Malandain
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Patent number: 7911590Abstract: The invention relates to a method for measuring the speed of a particle such as a red blood cell moving inside a flow such as a flow of the blood, using a light scanning microscope. The inventive method comprises the following steps: acquisition of an image by x and y light scanning on a plane containing the object; detection on the plane (x, y) of a mark on the plane (x, y); estimation of the speed vg of the object from the gradient thus determined.Type: GrantFiled: March 25, 2005Date of Patent: March 22, 2011Assignee: Mauna Kea TechnologiesInventors: Francois Lacombe, Georges Le Goualher, Aymeric Perchant, Nicholas Ayache
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Patent number: 7903848Abstract: A method for processing an image acquired through a guide consisting of a plurality of optical fibers includes, for each optical fiber, isolating on the acquired image a zone corresponding to the optical fiber, locally processing each zone individually to correct the photon flux detected in each optical fiber, then reconstructing the acquired image by eliminating the pattern caused by the optical fiber. The method also includes a sampling process for obtaining, for each optical fiber and from a sampling image, a sample injection rate which can be used for reconstructing the acquired images. The method also includes a prior step which consists in detecting the fibers from a target.Type: GrantFiled: July 11, 2003Date of Patent: March 8, 2011Assignee: Mauna Kea TechnologiesInventors: Aymeric Perchant, Georges Le Goualher, Frederic Berier
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Publication number: 20100234686Abstract: An endoscopy device includes several light guides (1, 2, 3), each light guide having one or more optical fibres. The light guides are coupled with a sweeping system (4) arranged to direct an excitation light beam in alternation in one of the fibres of the guides from the proximal end of the guide including the one of the fibres. In this way, the proximal ends of the guides may make use of the same sweeping system, whereas the distal ends of the guides may be installed simultaneously in different zones of interest of an object or animal (10) under study for an almost simultaneous observation of the zones of interest. The invention also relates to an endoscopy method used in a device according to the invention. A device and a method according to the invention may be applied to quasi-simultaneous reflectance, fluorescence, multi-photon imaging of several areas of interest.Type: ApplicationFiled: May 11, 2007Publication date: September 16, 2010Applicant: Mauna Kea TechnologiesInventors: Francois Lacombe, Bertrand Viellerobe, Nicolas Boularot, Francois Doussoux, Aymeric Perchant
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Patent number: 7646938Abstract: A method for increasing the resolution of confocal images acquired through an image guide whereof the distal end is associated with an optical head for focusing the laser beam emitted by the image guide in an observation object. For a given position of the optical head, the method includes the following steps: producing a plurality of acquisitions through the image guide, each acquisition being produced for a specific spatial shift of the distal end of the guide image relative to the optical head which remains stationary; transforming the data of each acquisition into a point cloud; registering each scatter plot relative to a point cloud taken as reference; superimposing the thus registered point clouds; and reconstructing a final image from the superimposition. Advantageously, a controlled piezoelectric tube is used arranged about the distal end of the image guide to shift the latter.Type: GrantFiled: December 29, 2004Date of Patent: January 12, 2010Assignee: Mauna Kea TechnologiesInventors: Frédéric Berier, Aymeric Perchant
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Publication number: 20090041314Abstract: The present invention concerns a mosaicing method taking into account motion distortions, irregularly sampled frames and non-rigid deformations of the imaged tissue. The invention relates to a method for mosaicing frames from a video sequence acquired from a scanning device such as a scanning microscope, the method comprising the steps of: a) compensating for motion and motion distortion due to the scanning microscope, b) applying a global optimisation of inter-frame registration to align consistently the frames c) applying a construction algorithm on the registered frames to construct a mosaic, and d) applying a fine frame-to-mosaic non rigid registration. The method is based on a hierarchical framework that is able to recover a globally consistent alignment of the input frames, to compensate for the motion distortions and to capture the non-rigid deformations.Type: ApplicationFiled: August 2, 2007Publication date: February 12, 2009Inventors: Tom Vercauteren, Aymeric Perchant, Nicholas Ayache, Xavier Pennec, Gregoire Malandain
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Publication number: 20080045848Abstract: The invention relates to a method for measuring the speed of a particle such as a red blood cell moving inside a flow such as a flow of the blood, using a light scanning microscope. The inventive method comprises the following steps: acquisition of an image by x and y light scanning on a plane containing the object; detection on the plane (x, y) of a mark on the plane (x, y); estimation of the speed vg of the object from the gradient thus determined.Type: ApplicationFiled: March 25, 2005Publication date: February 21, 2008Applicant: MAUNA KEA TECHNOLOGIESInventors: Francois Lacombe, Georges Le Goualher, Aymeric Perchant, Nicholas Ayache
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Publication number: 20070273930Abstract: A method for increasing the resolution of confocal images acquired through an image guide whereof the distal end is associated with an optical head for focusing the laser beam emitted by the image guide in an observation object. For a given position of the optical head, the method includes the following steps: producing a plurality of acquisitions through the image guide, each acquisition being produced for a specific spatial shift of the distal end of the guide image relative to the optical head which remains stationary; transforming the data of each acquisition into a point cloud; registering each scatter plot relative to a point cloud taken as reference; superimposing the thus registered point clouds; and reconstructing a final image from the superimposition. Advantageously, a controlled piezoelectric tube is used arranged about the distal end of the image guide to shift the latter.Type: ApplicationFiled: December 29, 2004Publication date: November 29, 2007Inventors: Frédéric Berier, Aymeric Perchant
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Patent number: 7285089Abstract: Equipment includes an image guide (1) consisting of flexible optical fibers with: on the proximal end side: a source (2), angular scanning elements (3), injection elements (4) in one of the fibers, elements for splitting (5) the illuminating beam and the backscattered signal, elements for spatial filtering (6), elements for detecting (7) the signal, electronic elements (8) for controlling, analyzing and digital processing of the detected signal and display; and on the distal end side: an optical head (9) for focusing the illuminating beam exiting from the illuminated fiber. The scanning elements include a resonant line mirror (M1) and a galvanometric field mirror (M2) with a variable frequency and two afocal optical systems adapted to conjugate the two mirrors (M1, M2) firstly in the field mirror (M2) and the injection elements (4) in the image guide in a second step.Type: GrantFiled: December 20, 2002Date of Patent: October 23, 2007Assignee: Mauna Kea TechnologiesInventors: Bertrand Viellerobe, Magalie Genet, Frédéric Berier, François Lacombe, Aymeric Perchant, Georges Le Goualher, Sandra Marti, Stéphane Bourriaux
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Publication number: 20050207668Abstract: A method for processing an image acquired through a guide consisting of a plurality of optical fibers includes, for each optical fiber, isolating on the acquired image a zone corresponding to the optical fiber, locally processing each zone individually to correct the photon flux detected in each optical fiber, then reconstructing the acquired image by eliminating the pattern caused by the optical fiber. The method also includes a sampling process for obtaining, for each optical fiber and from a sampling image, a sample injection rate which can be used for reconstructing the acquired images. The method also includes a prior step which consists in detecting the fibers from a target.Type: ApplicationFiled: July 11, 2003Publication date: September 22, 2005Applicant: Mauna Kea Tech.Inventors: Aymeric Perchant, Georges Le Goualher, Frederic Berier
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Publication number: 20050078924Abstract: The invention concerns an equipment comprising an image guide (1) consisting of flexible optical fibers with: on the proximal end side: a source (2), angular scanning means (3), injection means (4) in one of the fibers, means for splitting (5) the illuminating beam and the backscattered signal, means for spatial filtering (6), means for detecting (7) said signal, electronic means (8) for controlling, analyzing and digital processing of the detected signal and display; and on the distal end side: an optical head (9) for focusing the illuminating beam exiting from the illuminated fiber. The invention is characterized in that the means (3) comprise a resonant line mirror (M1) and a galvanometric field mirror (M2) with a variable frequency and two afocal optical systems adapted to conjugate the two mirrors (M1, M2) firstly in the field mirror (M2) and the injection means (4) in the image guide in a second step.Type: ApplicationFiled: December 20, 2002Publication date: April 14, 2005Inventors: Bertrand Viellerobe, Magalie Genet, Frederic Berrier, Francois Lacombe, Aymeric Perchant, Georges Le Goualher, Sandra Marti, Stephane Bourriaux