Patents by Inventor Piotr Stec

Piotr Stec 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).

  • Publication number: 20160035104
    Abstract: A method of estimating motion between a pair of image frames of a given scene comprises calculating respective integral images for each of the image frames and selecting at least one corresponding region of interest within each frame. For each region of interest, an integral image profile from each integral image is calculated, each profile comprising an array of elements, each element comprising a sum of pixel intensities from successive swaths of the region of interest for the frame. Integral image profiles are correlated to determine a relative displacement of the region of interest between the pair of frames. Each region of interest is divided into a plurality of further regions of interest before repeating until a required hierarchy of estimated motion for successively divided regions of interest is provided.
    Type: Application
    Filed: March 14, 2014
    Publication date: February 4, 2016
    Inventors: PETRONEL BIGIOI, PETER CORCORAN, PIOTR STEC
  • Patent number: 9242602
    Abstract: A rearview imaging system for a vehicle includes at least one video camera mounted at the rear of the vehicle for providing a wide angle horizontal field of view (FoV) rearwardly of the vehicle, and a display device in the vehicle at a position viewable by the driver. A video processor subdivides the camera FoV into three horizontally disposed sub-FOVs and displaying said sub-FoVs on visually separated side-by-side regions of the display device screen. The horizontal position and/or extent of at least one sub-FoV is variable as a function of the motion of the vehicle.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: January 26, 2016
    Assignee: Fotonation Limited
    Inventors: Peter Corcoran, Petronel Bigioi, Piotr Stec
  • Publication number: 20150365588
    Abstract: A hand-held digital image capture device (digital camera) has a user-selectable mode in which upon engaging the mode the device detects a face in the field of view of the device and generates a face delimiter on a camera display screen, the delimiter surrounding the initial position of the image of a the face on the screen. The device is arranged to indicate thereafter to the user if the device departs from the movement along a predetermined concave path P with the optical axis of the device pointing towards the face, such indication being made by movement of the image of the face relative to the delimiter. The camera captures and stores a plurality of images at successive positions along the concave path.
    Type: Application
    Filed: August 24, 2015
    Publication date: December 17, 2015
    Inventors: Petronel Bigioi, Peter Corcoran, Piotr Stec
  • Publication number: 20150262344
    Abstract: A method for correcting a distorted input image comprises determining a local region of an image to be displayed and dividing said region into an array of rectangular tiles, each tile corresponding to a distorted tile with a non-rectangular boundary within said input image. For each tile of the local region, maximum and minimum memory address locations of successive rows of said input image sufficient to span said boundary of said distorted tile are determined. Successive rows of the distorted input from between said maximum and minimum addresses are read. Distortion of the non-rectangular portion of said distorted input image is corrected to provide a tile of a corrected output image which is stored.
    Type: Application
    Filed: June 2, 2015
    Publication date: September 17, 2015
    Inventors: Piotr Stec, Alexei Pososin, Mihai Constantin Munteanu, Corneliu Zaharia
  • Patent number: 9118833
    Abstract: A hand-held digital image capture device (digital camera) has a user-selectable mode in which upon engaging the mode the device detects a face in the field of view of the device and generates a face delimiter on a camera display screen, the delimiter surrounding the initial position of the image of a the face on the screen. The device is arranged to indicate thereafter to the user if the device departs from movement along a predetermined concave path P with the optical axis of the device pointing towards the face, such indication being made by movement of the image of the face relative to the delimiter. The camera captures and stores a plurality of images at successive positions along the concave path.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: August 25, 2015
    Assignee: FotoNation Limited
    Inventors: Petronel Bigioi, Peter Corcoran, Piotr Stec
  • Publication number: 20150178897
    Abstract: A method for correcting a distorted input image includes determining a local region of an image to be displayed and dividing the region into an array of rectangular tiles, each tile corresponding to a distorted tile with a non-rectangular boundary within the input image. For each tile of the local region, maximum and minimum memory address locations of successive rows of the input image sufficient to span the boundary of the distorted tile are determined. Successive rows of the distorted input from between the maximum and minimum addresses are read. Distortion of the non-rectangular portion of the distorted input image is corrected to provide a tile of a corrected output image which is stored.
    Type: Application
    Filed: December 22, 2014
    Publication date: June 25, 2015
    Inventors: Piotr Stec, Alexei Pososin, Mihai Constantin Munteanu, Corneliu Zaharia
  • Patent number: 8982180
    Abstract: A technique of enhancing a scene containing one or more off-center peripheral regions within an initial distorted image captured with a large field of view includes determining and extracting an off-center region of interest (hereinafter “ROI”) within the image. Geometric correction is applied to reconstruct the off-center ROI into a rectangular or otherwise undistorted or less distorted frame of reference as a reconstructed ROI.
    Type: Grant
    Filed: April 2, 2011
    Date of Patent: March 17, 2015
    Assignee: Fotonation Limited
    Inventors: Peter Corcoran, Petronel Bigioi, Piotr Stec
  • Patent number: 8947501
    Abstract: A technique of enhancing a scene containing one or more off-center peripheral regions within an initial distorted image captured with a large field of view includes determining and extracting an off-center region of interest (hereinafter “ROI”) within the image. Geometric correction is applied to reconstruct the off-center ROI into a rectangular frame of reference as a reconstructed ROI. A quality of reconstructed pixels is determined within the reconstructed ROI. Image analysis is selectively applied to the reconstructed ROI based on the quality of the reconstructed pixels.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: February 3, 2015
    Assignee: FotoNation Limited
    Inventors: Peter Corcoran, Petronel Bigioi, Piotr Stec
  • Patent number: 8928730
    Abstract: A method for correcting a distorted input image includes determining a local region of an image to be displayed and dividing the region into an array of rectangular tiles, each tile corresponding to a distorted tile with a non-rectangular boundary within the input image. For each tile of the local region, maximum and minimum memory address locations of successive rows of the input image sufficient to span the boundary of the distorted tile are determined. Successive rows of the distorted input from between the maximum and minimum addresses are read. Distortion of the non-rectangular portion of the distorted input image is corrected to provide a tile of a corrected output image which is stored.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: January 6, 2015
    Assignee: DigitalOptics Corporation Europe Limited
    Inventors: Piotr Stec, Alexei Pososin, Mihai Munteanu, Corneliu Zaharia
  • Patent number: 8872887
    Abstract: An image acquisition device having a wide field of view includes a lens and image sensor configured to capture an original wide field of view (WFoV) image with a field of view of more than 90°. The device has an object detection engine that includes one or more cascades of object classifiers, e.g., face classifiers. A WFoV correction engine may apply rectilinear and/or cylindrical projections to pixels of the WFoV image, and/or non-linear, rectilinear and/or cylindrical lens elements or lens portions serve to prevent and/or correct distortion within the original WFoV image. One or more objects located within the original and/or distortion-corrected WFoV image is/are detectable by the object detection engine upon application of the one or more cascades of object classifiers.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: October 28, 2014
    Assignee: Fotonation Limited
    Inventors: Petronel Bigioi, Alexandru Drimbarean, Mihnea Gangea, Piotr Stec, Peter Corcoran
  • Patent number: 8860816
    Abstract: A technique of enhancing a scene containing one or more off-center peripheral regions within an initial distorted image captured with a large field of view includes determining and extracting an off-center region of interest (hereinafter “ROI”) within the image. Geometric correction is applied to reconstruct the off-center ROI into a rectangular or otherwise undistorted or less distorted frame of reference as a reconstructed ROI. A quality of reconstructed pixels is determined within the constructed ROI. Image analysis is selectively applied to the reconstructed ROI based on the quality of the reconstructed pixels.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: October 14, 2014
    Assignee: Fotonation Limited
    Inventors: Peter Corcoran, Petronel Bigioi, Piotr Stec
  • Patent number: 8797418
    Abstract: Methods and systems for detecting and correcting chromatic aberration and purple fringing are disclosed. Chromatic aberration can be addressed by separating an image into color planes and then adjusting these to reduce chromatic aberration by using a specific calibration image (calibration chart) as an empirical method to calibrate the image acquisition device. Purple fringing can be corrected by initially addressing color aberration resulting from the lateral chromatic aberration (LCA). The LCA is first removed and then the correction is extended to purple fringing. A discovery is relied upon that the purple fringing is created in the direction of the chromatic aberration and is more pronounced in the direction of the chromatic aberration.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: August 5, 2014
    Assignee: DigitalOptics Corporation Europe Limited
    Inventors: Piotr Stec, Larry Murray, Alexandru Drimbarean
  • Patent number: 8786709
    Abstract: Methods and systems for detecting and correcting chromatic aberration and purple fringing are disclosed. Chromatic aberration can be addressed by separating an image into color planes and then adjusting these to reduce chromatic aberration by using a specific calibration image (calibration chart) as an empirical method to calibrate the image acquisition device. Purple fringing can be corrected by initially addressing color aberration resulting from the lateral chromatic aberration (LCA). The LCA is first removed and then the correction is extended to purple fringing. A discovery is relied upon that the purple fringing is created in the direction of the chromatic aberration and is more pronounced in the direction of the chromatic aberration.
    Type: Grant
    Filed: December 24, 2012
    Date of Patent: July 22, 2014
    Assignee: DigitalOptics Corporation Europe Limited
    Inventors: Piotr Stec, Larry Murray, Alexandru Drimbarean
  • Patent number: 8723959
    Abstract: A technique of enhancing a scene containing one or more off-center peripheral regions within an initial distorted image captured with a large field of view includes determining and extracting an off-center region of interest (hereinafter “ROI”) within the image. Geometric correction is applied to reconstruct the off-center ROI into a rectangular or otherwise undistorted or less distorted frame of reference as a reconstructed ROI.
    Type: Grant
    Filed: April 2, 2011
    Date of Patent: May 13, 2014
    Assignee: DigitalOptics Corporation Europe Limited
    Inventors: Peter Corcoran, Petronel Bigioi, Piotr Stec
  • Patent number: 8705894
    Abstract: A measure of frame-to-frame rotation is determined. Integral projection vector gradients are determined and normalized for a pair of images. Locations of primary maximum and minimum peaks of the integral projection vector gradients are determined. Based on normalized distances between the primary maximum and minimum peaks, a global image rotation is determined.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: April 22, 2014
    Assignee: Digital Optics Corporation Europe Limited
    Inventors: Felix Albu, Larry Murray, Piotr Stec, Ilariu Raducan
  • Patent number: 8692867
    Abstract: An image acquisition device having a wide field of view includes a lens and image sensor configured to capture an original wide field of view (WFoV) image with a field of view of more than 90°. The device has an object detection engine that includes one or more cascades of object classifiers, e.g., face classifiers. A WFoV correction engine may apply rectilinear and/or cylindrical projections to pixels of the WFoV image, and/or non-linear, rectilinear and/or cylindrical lens elements or lens portions serve to prevent and/or correct distortion within the original WFoV image. One or more objects located within the original and/or distortion-corrected WFoV image is/are detectable by the object detection engine upon application of the one or more cascades of object classifiers.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: April 8, 2014
    Assignee: DigitalOptics Corporation Europe Limited
    Inventors: Petronel Bigioi, Alexandru Drimbarean, Mihnea Gangea, Piotr Stec, Peter Corcoran
  • Publication number: 20140055616
    Abstract: A rearview imaging system for a vehicle includes at least one video camera mounted at the rear of the vehicle for providing a wide angle horizontal field of view (FoV) rearwardly of the vehicle, and a display device in the vehicle at a position viewable by the driver. A video processor subdivides the camera FoV into three horizontally disposed sub-FOVs and displaying said sub-FoVs on visually separated side-by-side regions of the display device screen. The horizontal position and/or extent of at least one sub-FoV is variable as a function of the motion of the vehicle.
    Type: Application
    Filed: August 27, 2012
    Publication date: February 27, 2014
    Applicant: DigitalOptics Corporation Europe Limited
    Inventors: Peter Corcoran, Petronel Bigiol, Piotr Stec
  • Publication number: 20140009568
    Abstract: A method for correcting a distorted input image includes determining a local region of an image to be displayed and dividing the region into an array of rectangular tiles, each tile corresponding to a distorted tile with a non-rectangular boundary within the input image. For each tile of the local region, maximum and minimum memory address locations of successive rows of the input image sufficient to span the boundary of the distorted tile are determined. Successive rows of the distorted input from between the maximum and minimum addresses are read. Distortion of the non-rectangular portion of the distorted input image is corrected to provide a tile of a corrected output image which is stored.
    Type: Application
    Filed: July 3, 2012
    Publication date: January 9, 2014
    Applicant: DIGITALOPTCS CORPORATION EUROPE LIMITED
    Inventors: Piotr Stec, Alexei Pososin, Mihai Munteanu, Corneliu Zaharia
  • Patent number: 8587665
    Abstract: A measure of frame-to-frame rotation is determined. A global XY alignment of a pair of frames is performed. Local XY alignments in at least two matching corner regions of the pair of images are determined after the global XY alignment. Based on differences between the local XY alignments, a global rotation is determined between the pair of frames.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: November 19, 2013
    Assignee: DigitalOptics Corporation Europe Limited
    Inventors: Felix Albu, Larry Murray, Piotr Stec, Ilariu Raducan
  • Patent number: 8587666
    Abstract: A measure of frame-to-frame rotation is determined. A global XY alignment of a pair of image frames is performed. At least one section of each of the X and Y integral projection vectors is determined, where aligned global vectors demonstrate a significant localized difference. Based on X and Y locations of the at least one section of the X and Y integral projection vectors, location, relative velocity and/or approximate area of at least one moving object within the sequence of image frames is/are determined.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: November 19, 2013
    Assignee: DigitalOptics Corporation Europe Limited
    Inventors: Felix Albu, Larry Murray, Piotr Stec, Ilariu Raducan