Patents by Inventor Florin Nanu

Florin Nanu 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: 10334152
    Abstract: A method for acquiring an image comprises acquiring a first image frame including a region containing a subject at a first focus position; determining a first sharpness of the subject within the first image frame; identifying an imaged subject size within the first image frame; determining a second focus position based on the imaged subject size; acquiring a second image frame at the second focus position; and determining a second sharpness of the subject within the second image frame. A sharpness threshold is determined as a function of image acquisition parameters for the first and/or second image frame. Responsive to the second sharpness not exceeding the first sharpness and the sharpness threshold, camera motion parameters and/or subject motion parameters for the second image frame are determined before performing a focus sweep to determine an optimal focus position for the subject.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: June 25, 2019
    Assignee: FotoNation Limited
    Inventors: Florin Nanu, Alexandru Malaescu, Cosmin Clapon
  • Patent number: 10311554
    Abstract: A method of providing a sharpness measure for an image comprises detecting an object region within an image; obtaining meta-data for the image; and scaling the chosen object region to a fixed size. A gradient map is calculated for the scaled object region and compared against a threshold determined for the image to provide a filtered gradient map of values exceeding the threshold. The threshold for the image is a function of at least: a contrast level for the detected object region, a distance to the subject and an ISO/gain used for image acquisition. A sharpness measure for the object region is determined as a function of the filtered gradient map values, the sharpness measure being proportional to the filtered gradient map values.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: June 4, 2019
    Assignee: FotoNation Limited
    Inventors: Florin Nanu, Adrian Bobei, Alexandru Malaescu, Cosmin Clapon
  • Publication number: 20190158822
    Abstract: A method for dynamically calibrating an image capture device comprises: a) determining a distance (DCRT, DEST) to an object within a scene; b) determining a first lens actuator setting (DACINIT) for the determined distance; c) determining a second lens actuator setting (DACFOCUS) providing maximum sharpness for the object in a captured image of the scene; and d) storing the determined distance (DCRT, DEST) and the first and second lens actuator settings. These steps are repeated at a second determined distance separated from the first determined distance. A calibration correction (ERRNEARPLP, ERRFARPLP) for stored calibrated lens actuator settings (DACNEARPLP, DACFARPLP) is determined as a function of at least: respective differences between the second lens actuator setting (DACFOCUS) and the first lens actuator setting (DACINIT) for each of the first and second determined distances; and the stored calibrated lens actuator settings are adjusted according to the determined calibration corrections.
    Type: Application
    Filed: December 3, 2018
    Publication date: May 23, 2019
    Applicant: FotoNation Limited
    Inventors: Alexandru MALAESCU, Florin NANU
  • Publication number: 20190102637
    Abstract: Related methods are provided for establishing a baseline value to represent an eyelid opening dimension for a person engaged in an activity, where the activity may be driving a vehicle, operating industrial equipment, or performing a monitoring or control function; and for operating a system for monitoring eyelid opening values with real time video data.
    Type: Application
    Filed: October 2, 2018
    Publication date: April 4, 2019
    Inventors: Florin NANU, Stefan PETRESCU, Florin OPREA, Emanuela HALLER
  • Publication number: 20190102638
    Abstract: Method for monitoring eyelid opening values. In one embodiment video image data is acquired with a camera which data are representative of a person engaged in an activity, where the activity may be driving a vehicle, operating industrial equipment, or performing a monitoring or control function. When the person's head undergoes a change in yaw angle, such that eyelids of both eyes of the person are captured with the camera, but one eye is closer to the camera than the other eye, a weighting factor is applied, which factor varies as a function of the yaw angle such that a value representative of eyelid opening data based on both eyes is calculated.
    Type: Application
    Filed: October 2, 2018
    Publication date: April 4, 2019
    Inventors: Florin NANU, Stefan PETRESCU, Florin OPREA, Emanuela HALLER
  • Patent number: 10148943
    Abstract: A method for acquiring an image comprises acquiring a first image frame including a region containing a subject at a first focus position; determining a first sharpness of the subject within the first image frame; identifying an imaged subject size within the first image frame; determining a second focus position based on the imaged subject size; acquiring a second image frame at the second focus position; and determining a second sharpness of the subject within the second image frame. A sharpness threshold is determined as a function of image acquisition parameters for the first and/or second image frame. Responsive to the second sharpness not exceeding the first sharpness and the sharpness threshold, camera motion parameters and/or subject motion parameters for the second image frame are determined before performing a focus sweep to determine an optimal focus position for the subject.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: December 4, 2018
    Assignee: FotoNation Limited
    Inventors: Florin Nanu, Alexandru Malaescu
  • Patent number: 10148945
    Abstract: A method for dynamically calibrating an image capture device comprises: a) determining a distance (DCRT, DEST) to an object within a scene; b) determining a first lens actuator setting (DACINIT) for the determined distance; c) determining a second lens actuator setting (DACFOCUS) providing maximum sharpness for the object in a captured image of the scene; and d) storing the determined distance (DCRT, DEST) and the first and second lens actuator settings. These steps are repeated at a second determined distance separated from the first determined distance. A calibration correction (ERRNEARPLP, ERRFARPLP) for stored calibrated lens actuator settings (DACNEARPLP, DACFARPLP) is determined as a function of at least: respective differences between the second lens actuator setting (DACFOCUS) and the first lens actuator setting (DACINIT) for each of the first and second determined distances; and the stored calibrated lens actuator settings are adjusted according to the determined calibration corrections.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: December 4, 2018
    Assignee: FotoNation Limited
    Inventors: Alexandru Malaescu, Florin Nanu
  • Publication number: 20180343444
    Abstract: A method for dynamically calibrating an image capture device comprises: a) determining a distance (DCRT, DEST) to an object within a scene; b) determining a first lens actuator setting (DACINIT) for the determined distance; c) determining a second lens actuator setting (DACFOCUS) providing maximum sharpness for the object in a captured image of the scene; and d) storing the determined distance (DCRT, DEST) and the first and second lens actuator settings. These steps are repeated at a second determined distance separated from the first determined distance. A calibration correction (ERRNEARPLP, ERRFARPLP) for stored calibrated lens actuator settings (DACNEARPLP, DACFARPLP) is determined as a function of at least: respective differences between the second lens actuator setting (DACFOCUS) and the first lens actuator setting (DACINIT) for each of the first and second determined distances; and the stored calibrated lens actuator settings are adjusted according to the determined calibration corrections.
    Type: Application
    Filed: May 25, 2017
    Publication date: November 29, 2018
    Inventors: Alexandru MALAESCU, Florin NANU
  • Patent number: 10123003
    Abstract: A method for calibrating an image capture device comprises mounting at least one sample device from a batch for movement through a plurality of orientations relative to a horizontal plane. For a given orientation, the sample device is focused at a sequence of positions, each position being at a respective focus distance from the device. A lens actuator setting is recorded for the sample device at each position. This is repeated at a plurality of distinct orientations of the sample device. Respective relationships are determined between lens actuator settings at any given position for distinct orientations from the plurality of distinct orientations and actuator settings at a selected orientation of the plurality of distinct orientations. Lens actuator settings for the image capture device to be calibrated are recorded at least at two points of interest (POI), each a specified focus distance from the device with the image capture device positioned at the selected orientation.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: November 6, 2018
    Assignee: FotoNation Limited
    Inventors: Alexandru Malaescu, Florin Nanu, Petronel Bigioi, Peter Corcoran
  • Publication number: 20180253631
    Abstract: A method of providing a sharpness measure for an image comprises detecting an object region within an image; obtaining meta-data for the image; and scaling the chosen object region to a fixed size. A gradient map is calculated for the scaled object region and compared against a threshold determined for the image to provide a filtered gradient map of values exceeding the threshold. The threshold for the image is a function of at least: a contrast level for the detected object region, a distance to the subject and an ISO/gain used for image acquisition. A sharpness measure for the object region is determined as a function of the filtered gradient map values, the sharpness measure being proportional to the filtered gradient map values.
    Type: Application
    Filed: March 1, 2017
    Publication date: September 6, 2018
    Inventor: Florin NANU
  • Publication number: 20180253831
    Abstract: A method of providing a sharpness measure for an image comprises detecting an object region within an image; obtaining meta-data for the image; and scaling the chosen object region to a fixed size. A gradient map is calculated for the scaled object region and compared against a threshold determined for the image to provide a filtered gradient map of values exceeding the threshold. The threshold for the image is a function of at least: a contrast level for the detected object region, a distance to the subject and an ISO/gain used for image acquisition. A sharpness measure for the object region is determined as a function of the filtered gradient map values, the sharpness measure being proportional to the filtered gradient map values.
    Type: Application
    Filed: January 16, 2018
    Publication date: September 6, 2018
    Applicant: FotoNation Limited
    Inventors: Florin NANU, Adrian BOBEI, Alexandru MALAESCU, Cosmin CLAPON
  • Publication number: 20180109719
    Abstract: A method for acquiring an image comprises acquiring a first image frame including a region containing a subject at a first focus position; determining a first sharpness of the subject within the first image frame; identifying an imaged subject size within the first image frame; determining a second focus position based on the imaged subject size; acquiring a second image frame at the second focus position; and determining a second sharpness of the subject within the second image frame. A sharpness threshold is determined as a function of image acquisition parameters for the first and/or second image frame. Responsive to the second sharpness not exceeding the first sharpness and the sharpness threshold, camera motion parameters and/or subject motion parameters for the second image frame are determined before performing a focus sweep to determine an optimal focus position for the subject.
    Type: Application
    Filed: December 7, 2017
    Publication date: April 19, 2018
    Inventors: Florin NANU, Alexandru MALAESCU, Cosmin CLAPON
  • Publication number: 20180041754
    Abstract: A method for acquiring an image comprises acquiring a first image frame including a region containing a subject at a first focus position; determining a first sharpness of the subject within the first image frame; identifying an imaged subject size within the first image frame; determining a second focus position based on the imaged subject size; acquiring a second image frame at the second focus position; and determining a second sharpness of the subject within the second image frame. A sharpness threshold is determined as a function of image acquisition parameters for the first and/or second image frame. Responsive to the second sharpness not exceeding the first sharpness and the sharpness threshold, camera motion parameters and/or subject motion parameters for the second image frame are determined before performing a focus sweep to determine an optimal focus position for the subject.
    Type: Application
    Filed: August 8, 2016
    Publication date: February 8, 2018
    Inventors: Florin NANU, Alexandru MALAESCU
  • Publication number: 20170155896
    Abstract: A method for calibrating an image capture device comprises mounting at least one sample device from a batch for movement through a plurality of orientations relative to a horizontal plane. For a given orientation, the sample device is focused at a sequence of positions, each position being at a respective focus distance from the device. A lens actuator setting is recorded for the sample device at each position. This is repeated at a plurality of distinct orientations of the sample device. Respective relationships are determined between lens actuator settings at any given position for distinct orientations from the plurality of distinct orientations and actuator settings at a selected orientation of the plurality of distinct orientations. Lens actuator settings for the image capture device to be calibrated are recorded at least at two points of interest (POI), each a specified focus distance from the device with the image capture device positioned at the selected orientation.
    Type: Application
    Filed: May 28, 2015
    Publication date: June 1, 2017
    Applicant: FotoNation Limited
    Inventors: Alexandru MALAESCU, Florin NANU, Petronel BIGIOI, Peter CORCORAN
  • Publication number: 20170070649
    Abstract: A digital camera has an integral flash and stores and displays a digital image. Under certain conditions, a flash photograph taken with the camera may result in a red-eye phenomenon due to a reflection within an eye of a subject of the photograph. A digital apparatus has a red-eye filter which analyzes at least one partial face region identified within the digital image for the red-eye phenomenon and modifies the image to eliminate the red-eye phenomenon by changing the red area to black. The modification of the image is enabled when a photograph is taken under conditions indicative of the red-eye phenomenon. The modification is subject to anti-falsing analysis which further examines the area around the red-eye area for indicia of the eye of the subject. The detection and correction can be optimized for performance and quality by operating on subsample versions of the image when appropriate.
    Type: Application
    Filed: August 9, 2016
    Publication date: March 9, 2017
    Inventors: Florin NANU, Eran STEINBERG, Stefan PETRESCU, Mihnea GANGEA, Adrian CAPATA, Mihai CIUC, Adrian ZAMFIR, Peter CORCORAN, Alexei POSOSIN, Petronel BIGIOI, Alexandru DRIMBAREAN
  • Patent number: 9412007
    Abstract: A digital camera has an integral flash and stores and displays a digital image. Under certain conditions, a flash photograph taken with the camera may result in a red-eye phenomenon due to a reflection within an eye of a subject of the photograph. A digital apparatus has a red-eye filter which analyzes at least one partial face region identified within the digital image for the red-eye phenomenon and modifies the image to eliminate the red-eye phenomenon by changing the red area to black. The modification of the image is enabled when a photograph is taken under conditions indicative of the red-eye phenomenon. The modification is subject to anti-falsing analysis which further examines the area around the red-eye area for indicia of the eye of the subject. The detection and correction can be optimized for performance and quality by operating on subsample versions of the image when appropriate.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: August 9, 2016
    Assignee: FOTONATION LIMITED
    Inventors: Florin Nanu, Eran Steinberg, Peter Corcoran, Alexei Pososin, Petronel Bigioi, Alexandru Drimbarean, Stefan Petrescu, Mihnea Gangea, Adrian Capata, Mihai Ciuc, Adrian Zamfir
  • Publication number: 20160165129
    Abstract: A method of processing an image comprises: acquiring an image of a scene including an object having a recognisable feature. A lens actuator setting providing a maximum sharpness for a region of the image including the object and a lens displacement corresponding to the lens actuator setting are determined. A distance to the object based on the lens displacement is calculated. A dimension of the feature as a function of the distance to the object, the imaged object size and a focal length of a lens assembly with which the image was acquired, is determined. The determined dimension of the feature is employed instead of an assumed dimension of the feature for subsequent processing of images of the scene including the object.
    Type: Application
    Filed: December 9, 2015
    Publication date: June 9, 2016
    Inventors: Alexandru Malaescu, Florin Nanu, Stefan Petrescu, Peter Corcoran, Petronel Bigioi
  • Patent number: 9137425
    Abstract: A method and device for detecting a potential defect in an image comprises acquiring a digital image at a time; storing image acquisition data, wherein the image acquisition data includes at least one of a position of a source of light relative to a lens, a distance from the source of light to the lens, a focal length of the lens, a distance from a point on a digital image acquisition device to a subject, an amount of ambient light, or flash intensity; determining dynamic anthropometric data, wherein the dynamic anthropometric data includes one or more dynamically changing human body measurements, of one or more humans represented in the image, captured at the time; and determining a course of corrective action based, at least in part, on the image acquisition data and the dynamic anthropometric data.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: September 15, 2015
    Assignee: FotoNation Limited
    Inventors: Florin Nanu, Peter Corcoran, Cosmin Nicolae Stan
  • Patent number: 8970770
    Abstract: An autofocus method includes acquiring an image of a scene that includes one or more out of focus faces and/or partial faces. The method includes detecting one or more of the out of focus faces and/or partial faces within the digital image by applying one or more sets of classifiers trained on faces that are out of focus. One or more sizes of the one of more respective out of focus faces and/or partial faces is/are determined within the digital image. One or more respective depths is/are determined to the one or more out of focus faces and/or partial faces based on the one or more sizes of the one of more faces and/or partial faces within the digital image. One or more respective focus positions of the lens is/are adjusted to focus approximately at the determined one or more respective depths.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: March 3, 2015
    Assignee: Fotonation Limited
    Inventors: Florin Nanu, Cosmin Nicolae Stan, Peter Corcoran
  • Patent number: 8878967
    Abstract: A color filter enhancement method for a portable digital image acquisition device includes digitally exposing color pixels of a color sensor array for a first digital exposure duration and digitally exposing white pixels of a color sensor array for a second digital exposure time shorter than the first digital exposure duration. A color filter enhanced digital image is generated using data from both the color pixels exposed for the first digital exposure duration and the white pixels exposed for the second digital exposure duration.
    Type: Grant
    Filed: October 11, 2010
    Date of Patent: November 4, 2014
    Assignee: DigitalOptics Corporation Europe Limited
    Inventors: George Susanu, Stefan Petrescu, Florin Nanu, Adrian Capata, Peter Corcoran