Patents by Inventor Bruno Mirbach

Bruno Mirbach 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).

  • Patent number: 10275857
    Abstract: A method for enhancing a depth image of a scene, comprises calculating an enhanced depth image by blending a first filtered depth image with a second filtered depth image or with the original depth image. The blending is achieved by application of a blending map, which defines, for each pixel, a contribution to the enhanced depth image of the corresponding pixel of the first filtered depth image and of the corresponding pixel of either the second filtered depth image or the original depth image. For pixels in the depth image containing no depth value or an invalid depth value, the blending map defines a zero contribution of the corresponding pixel of the second filtered depth image and a 100% contribution of the corresponding pixel of the first filtered image.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: April 30, 2019
    Assignee: IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.
    Inventors: Bruno Mirbach, Thomas Solignac, Frederic Garcia Becerro, Djamila Aouada
  • Publication number: 20180067197
    Abstract: A method and system for real-time motion artifact handling and noise removal for time-of-flight (ToF) sensor images. The method includes: calculating values of a cross correlation function c(?) at a plurality of temporally spaced positions or phases from sent (s(t)) and received (r(t)) signals, thereby deriving a plurality of respective cross correlation values [c(?0), c(?1), c(?2), c(?3)]; deriving, from the plurality of cross correlation values [c(?0), c(?1), c(?2), c(?3)], a depth map D having values representing, for each pixel, distance to a portion of an object upon which the sent signals (s(t)) are incident; deriving, from the plurality of cross correlation values [c(?0), c(?2), c(?3)], a guidance image (I; I?); and generating an output image D? based on the depth map D and the guidance image (I; I?), the output image D? comprising an edge-preserving and smoothed version of depth map D, the edge-preserving being from guidance image (I; I?).
    Type: Application
    Filed: March 29, 2016
    Publication date: March 8, 2018
    Inventors: Cedric SCHOCKAERT, Frederic GARCIA BECERRO, Bruno MIRBACH
  • Publication number: 20180053289
    Abstract: A method and system for real-time noise removal and image enhancement of high-dynamic range (HDR) images. The method includes receiving an HDR input image I and operating processing circuitry for (i) applying a first edge-preserving filter (e.g. guided filter) to the input image I, thereby generating a first image component B1 and a first set of linear coefficients ?i,1; (ii) applying a second edge-preserving filter (e.g. guided filter) to the input image I, thereby generating a second image component B2 and a second set of linear coefficients ?i,2; (iii) generating a plausibility mask P from a combination of the first set of linear coefficients ?i,1 and the second set of linear coefficients ?i,2, the plausibility mask P indicating spatial detail within the input image I; and (iv) generating an output image O based on first image component B1, the second image component B2 and the plausibility mask P.
    Type: Application
    Filed: March 2, 2016
    Publication date: February 22, 2018
    Inventors: Frederic GARCIA BECERRO, Cedric SCHOCKAERT, Bruno MIRBACH
  • Patent number: 9400917
    Abstract: A dynamic reference range image generation method comprises providing a reference range image, to be dynamically updated, composed of pixels, each of which contains a reference range value. An acquired range image is provided, the pixels of which contain each a measured range value, the measured range values being updated at a predetermined rate. Pixels of the acquired range image containing an invalid measured range value are accordingly marked. The measured range value of each pixel of the acquired range image not marked as containing an invalid measured range value is compared with the reference range value of the corresponding pixel of the reference range image. The reference range value of that pixel of the reference range image is updated e.g.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: July 26, 2016
    Assignee: IEE International Electronics & Engineering S.A.
    Inventors: Frédéric Grandidier, Bruno Mirbach, Thomas Solignac
  • Publication number: 20160047913
    Abstract: A method for determining a distance comprises: providing at least two phase measurements made with modulated light of different modulation wavelengths, each phase measurement being indicative of the distance up to an integer multiple of a respective modulation wavelength; providing a set of possible wraparound count combinations; for each one of the possible wraparound count combinations, calculating a combination of unwrapped phase hypotheses corresponding to the at least two phase measurements; and selecting a most plausible combination of unwrapped phase hypotheses among the combinations of unwrapped phase hypotheses and calculating the distance based upon the selected most plausible combination of unwrapped phase hypotheses.
    Type: Application
    Filed: March 14, 2014
    Publication date: February 18, 2016
    Inventors: Laurent LAMESCH, Bruno MIRBACH
  • Publication number: 20150379362
    Abstract: One or more imaging device(s) inside a car that look(s) at occupants (driver, front passenger, rear passengers) and cover(s) multiple security, comfort, driver assistance and occupant state related functions, wherein the imaging device includes an illumination in the near infrared. An imaging device inside the car that can measure occupants' vital signs (heart rate, respiration rate, blood oxygen saturation) using contactless imaging photoplethysmography.
    Type: Application
    Filed: February 21, 2014
    Publication date: December 31, 2015
    Inventors: Sam CALMES, Cecile JOUANIQUE-DUBUIS, Thierry MOUSEL, Jean-Luc KAISER, Laurent LAMESCH, Bruno MIRBACH
  • Publication number: 20150235351
    Abstract: A method for enhancing a depth image of a scene, comprises calculating an enhanced depth image by blending a first filtered depth image with a second filtered depth image or with the original depth image. The blending is achieved by application of a blending map, which defines, for each pixel, a contribution to the enhanced depth image of the corresponding pixel of the first filtered depth image and of the corresponding pixel of either the second filtered depth image or the original depth image. For pixels in the depth image containing no depth value or an invalid depth value, the blending map defines a zero contribution of the corresponding pixel of the second filtered depth image and a 100% contribution of the corresponding pixel of the first filtered image.
    Type: Application
    Filed: September 9, 2013
    Publication date: August 20, 2015
    Inventors: Bruno Mirbach, Thomas Solignac, Frederic Garcia Becerro, Djamila Aouada
  • Patent number: 9025071
    Abstract: A method for contamination detection in a time-of-flight (TOF) range imaging system is described, wherein the TOF range imaging system receives light reflected from a scene, through an optical interface, on an imager sensor having an array of pixels, and wherein distance information and amplitude information are determined for the sensor pixels. The presence of contamination on the optical interface is determined on the basis of amplitude information determined for the sensor pixels.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: May 5, 2015
    Assignee: IEE International Electronics & Engineering S.A.
    Inventors: Bruno Mirbach, Romuald Ginhoux
  • Patent number: 9025862
    Abstract: A method for matching the pixels (10-1, 10-2) of a first range image of a scene (18) as seen from a first point of sight (14) with pixels (12-1, 12-2) of a second range image of the scene as seen from a second point of sight (16) comprises the following steps: providing the first range image as a grid of source pixels (10), on which the scene is mapped in accordance with a first projection associated with the first point of sight, wherein each source pixel has a point in the scene projected thereon in accordance with the first projection and has associated therewith a range value determined for that point in the scene; providing a grid of target pixels (12) for the second range image and a second projection associated with the second point of sight; and for each one of the target pixels, a) determining which source pixel would have the same point (P1, P2) in the scene projected thereon in accordance with the first projection as the target pixel would have projected thereon in accordance with the second projec
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: May 5, 2015
    Assignee: IEE International Electronics & Engineering S.A.
    Inventors: Frederic Garcia Becerro, Bruno Mirbach
  • Patent number: 8723924
    Abstract: A method of recording 3D images of a scene based on the time-of-flight principle is described. The method includes illuminating a scene by emitting light carrying an intensity modulation, imaging the scene onto a pixel array using an optical system, detecting, in each pixel, intensity-modulated light reflected from the scene onto the pixel and determining, for each pixel, a distance value based on the phase of light detected in the pixel. The determination of the distance values includes a phase-sensitive de-convolution of the scene imaged onto the pixel array such that phase errors induced by light spreading in the optical system are compensated for.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: May 13, 2014
    Assignee: IEE International Electronics & Engineering S.A.
    Inventors: Bruno Mirbach, Marta Castillo Franco, Thomas Solignac, Frédéric Grandidier
  • Publication number: 20130272600
    Abstract: A method for matching the pixels (10-1, 10-2) of a first range image of a scene (18) as seen from a first point of sight (14) with pixels (12-1, 12-2) of a second range image of the scene as seen from a second point of sight (16) comprises the following steps: providing the first range image as a grid of source pixels (10), on which the scene is mapped in accordance with a first projection associated with the first point of sight, wherein each source pixel has a point in the scene projected thereon in accordance with the first projection and has associated therewith a range value determined for that point in the scene; providing a grid of target pixels (12) for the second range image and a second projection associated with the second point of sight; and for each one of the target pixels, a) determining which source pixel would have the same point (P1, P2) in the scene projected thereon in accordance with the first projection as the target pixel would have projected thereon in accordance with the second projec
    Type: Application
    Filed: October 7, 2011
    Publication date: October 17, 2013
    Applicant: IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.
    Inventors: Frederic Garcia Becerro, Bruno Mirbach
  • Patent number: 8396251
    Abstract: Method for determining the position of an object point in a scene from a digital image thereof acquired through an optical system is presented. The image comprises a set of image points corresponding to object points and the position of the object points are determined by means of predetermined vectors associated with the image points. The predetermined vector represents the inverted direction of a light ray in the object space that will produce this image point through the optical system comprising all distortion effects of the optical system.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: March 12, 2013
    Assignee: IEE International Electronics & Engineering S.A.
    Inventors: Bruno Mirbach, Marta Castillo Franco, Romuald Ginhoux
  • Patent number: 8346684
    Abstract: For assigning a test pattern to a class chosen from a predefined set of classes, the class membership probability for the test pattern is calculated as well as the confidence interval for the class membership probability based upon a number of training patterns in a neighborhood of the test pattern in the feature space. The number of training patterns in the neighborhood of the test pattern is obtained from computing a convolution of a density function of the training patterns with a Gaussian smoothing function centered on the test pattern, where the density function of the training patterns is represented as a mixture of Gaussian functions. The convolution of the smoothing function and the mixture of Gaussian functions can be expressed analytically.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: January 1, 2013
    Assignee: IEE International Electronics & Engineering S.A.
    Inventors: Bruno Mirbach, Pandu Devarakota
  • Publication number: 20120229646
    Abstract: A dynamic reference range image generation method comprises providing a reference range image, to be dynamically updated, composed of pixels, each of which contains a reference range value. An acquired range image is provided, the pixels of which contain each a measured range value, the measured range values being updated at a predetermined rate. Pixels of the acquired range image containing an invalid measured range value are accordingly marked. The measured range value of each pixel of the acquired range image not marked as containing an invalid measured range value is compared with the reference range value of the corresponding pixel of the reference range image. The reference range value of that pixel of the reference range image is updated e.g.
    Type: Application
    Filed: September 16, 2010
    Publication date: September 13, 2012
    Applicant: IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.
    Inventors: Frédéric Grandidier, Bruno Mirbach, Thomas Solignac
  • Publication number: 20110205340
    Abstract: A camera system comprises a 3D TOF camera for acquiring a camera-perspective range image of a scene and an image processor for processing the range image. The image processor contains a position and orientation calibration routine implemented therein in hardware and/or software, which position and orientation calibration routine, when executed by the image processor, detects one or more planes within a range image acquired by the 3D TOF camera, selects a reference plane among the at least one or more planes detected and computes position and orientation parameters of the 3D TOF camera with respect to the reference plane, such as, e.g., elevation above the reference plane and/or camera roll angle and/or camera pitch angle.
    Type: Application
    Filed: April 27, 2009
    Publication date: August 25, 2011
    Applicant: IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.
    Inventors: Frederic Garcia, Frederic Grandidier, Bruno Mirbach, Roberto Orsello, Thomas Solignac
  • Publication number: 20110018967
    Abstract: A method of recording 3D images of a scene based on the time-of-flight principle comprises illuminating a scene by emitting light carrying an intensity modulation, imaging the scene onto a pixel array using an optical system, detecting, in each pixel, intensity-modulated light reflected from the scene onto the pixel and determining, for each pixel, a distance value based on the phase of light detected in the pixel. The determination of the distance values comprises a phase-sensitive de-convolution of the scene imaged onto the pixel array such that phase errors induced by light spreading in the optical system are compensated for.
    Type: Application
    Filed: December 9, 2008
    Publication date: January 27, 2011
    Applicant: IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.
    Inventors: Bruno Mirbach, Marta Castillo Franco, Thomas Solignac, Frederic Grandidier
  • Publication number: 20100283888
    Abstract: A method for contamination detection in a time-of-flight (TOF) range imaging system is described, wherein the TOF range imaging system receives light reflected from a scene, through an optical interface, on an imager sensor having an array of pixels, and wherein distance information and amplitude information are determined for the sensor pixels. The presence of contamination on the optical interface is determined on the basis of amplitude information determined for the sensor pixels.
    Type: Application
    Filed: June 12, 2008
    Publication date: November 11, 2010
    Applicant: IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.
    Inventors: Bruno Mirbach, Romuald Ginhoux
  • Publication number: 20090319451
    Abstract: For assigning a test pattern to a class chosen from a predefined set of classes, the class membership probability for the test pattern is calculated as well as the confidence interval for the class membership probability based upon a number of training patterns in a neighbourhood of the test pattern in the feature space. The number of training patterns in the neighbourhood of the test pattern is obtained from computing a convolution of a density function of the training patterns with a Gaussian smoothing function centred on the test pattern, where the density function of the training patterns is represented as a mixture of Gaussian functions. The convolution of the smoothing function and the mixture of Gaussian functions can be expressed analytically.
    Type: Application
    Filed: July 17, 2007
    Publication date: December 24, 2009
    Applicant: IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.
    Inventors: Bruno Mirbach, Pandu Devarakota
  • Publication number: 20090129628
    Abstract: Method for determining the position of an object point in a scene from a digital image thereof acquired through an optical system is presented. The image comprises a set of image points corresponding to object points and the position of the object points are determined by means of predetermined vectors associated with the image points. The predetermined vector represents the inverted direction of a light ray in the object space that will produce this image point through the optical system comprising all distortion effects of the optical system.
    Type: Application
    Filed: November 28, 2005
    Publication date: May 21, 2009
    Applicant: IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A.
    Inventors: Bruno Mirbach, Marta Castillo Franco, Romuald Ginhoux
  • Publication number: 20060220910
    Abstract: A method for providing parking aid for a vehicle, comprises the steps recording ambient data in the external area of a vehicle, calculation of the dimensions of a specific area using the recorded ambient data, and evaluation of the suitability of the specific area as a parking space taking into account the calculated dimensions and known, vehicle-specific reference values. According to the invention, the recording of ambient data comprises recording three-dimensional images of the surroundings by means of an optical 3-D system.
    Type: Application
    Filed: April 8, 2004
    Publication date: October 5, 2006
    Inventors: Guido Becker, Marta Castillo Franco, Bruno Mirbach, Thierry Mousel, Marc Schifflers