Patents by Inventor Hossein Tehrani Niknejad

Hossein Tehrani Niknejad 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: 10502832
    Abstract: In an object recognition apparatus, a range point acquirer irradiates each of irradiation areas arranged in a horizontally and vertically extending grid and forming a detection area for detecting a target with laser light and receives the reflected light from the respective irradiation areas, thereby acquiring a plurality of range points representing per-irradiation area coordinates of the target. A noise remover is configured to, based on either or both of degrees of angle proximity and degrees of distance proximity between a plurality of subject range points to be determined whether to be a noise point, of the plurality of range points, as viewed from a reference point, determine whether or not each of the subject range points is a noise point, and remove the noise point from the plurality of range points. An object recognizer uses the plurality of range points other than the noise points to recognize the object.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: December 10, 2019
    Assignees: DENSO CORPORATION, TOYOTA SCHOOL FOUNDATION
    Inventors: Hossein Tehrani Niknejad, Utsushi Sakai, Takashi Ogawa, Seiichi Mita, Qiwei Xie
  • Patent number: 10043106
    Abstract: A corresponding point searching method searches corresponding points in plural images, acquired by in-vehicle cameras, for each pixel in a reference image by using a predetermined first method, for example, the Viterbi algorithm. The method searches corresponding points in the plural images for each pixel in the reference image by using a predetermined second method, for example, an optical flow method. The method detects whether or not a search accuracy of the corresponding points in each region divided in the reference image obtained by the predetermined first method is not less than a reference value. When not less than the reference value, the method selects the corresponding points obtained by the predetermined first method. When less than the reference value, the searching method selects the corresponding points obtained by the predetermined second method. The searching method provides the corresponding points between the plural images with a high accuracy.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: August 7, 2018
    Assignees: DENSO CORPORATION, TOYOTA SCHOOL FOUNDATION
    Inventors: Kazuhisa Ishimaru, Noriaki Shirai, Hossein Tehrani Niknejad, Seiichi Mita, Qiwei Xie, Qian Long
  • Patent number: 9796378
    Abstract: When a travel path is to be generated for a vehicle, road surface lines (white lines, etc.) delimiting the traffic lane of the vehicle, and also external objects in the vehicle environment, are detected and registered as respective obstacles. Specific points are defined at appropriate locations on each obstacle, and the travel path is generated by connecting respective mid-point positions between opposed pairs of specific points, each pair defined on respective ones of an opposed (left-side, right-side) pair of the registered obstacles.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: October 24, 2017
    Assignee: DENSO CORPORATION
    Inventors: Tomohiko Tsuruta, Yusuke Ueda, Takeshi Hatoh, Takayuki Kondoh, Naoya Inoue, Hossein Tehrani Niknejad, Seiichi Mita
  • Publication number: 20170201736
    Abstract: A range correction device includes an image acquiring unit, a collimating unit, a disparity calculating unit, and an updating unit. The image acquiring unit acquires stereo images formed of a plurality of simultaneously captured images. The collimating unit collimates the stereo images acquired by the image acquiring unit, using a correction parameter for correcting a vertical displacement between stereo images. The disparity calculating unit calculates a distribution of horizontal disparities between the stereo images from the stereo images collimated by the collimating unit. The updating unit calculates a distribution of vertical displacements between the stereo images on the basis of the stereo images and the distribution of horizontal disparities calculated by the disparity calculating unit and updates the correction parameter on the basis of the distribution of the calculated vertical displacements.
    Type: Application
    Filed: June 17, 2015
    Publication date: July 13, 2017
    Inventors: Kazuhisa Ishimaru, Hossein Tehrani Niknejad, Seiichi Mita, Qian Long
  • Publication number: 20160358325
    Abstract: A corresponding point searching method searches corresponding points in plural images, acquired by in-vehicle cameras, for each pixel in a reference image by using a predetermined first method, for example, the Viterbi algorithm. The method searches corresponding points in the plural images for each pixel in the reference image by using a predetermined second method, for example, an optical flow method. The method detects whether or not a search accuracy of the corresponding points in each region divided in the reference image obtained by the predetermined first method is not less than a reference value. When not less than the reference value, the method selects the corresponding points obtained by the predetermined first method. When less than the reference value, the searching method selects the corresponding points obtained by the predetermined second method. The searching method provides the corresponding points between the plural images with a high accuracy.
    Type: Application
    Filed: June 2, 2016
    Publication date: December 8, 2016
    Inventors: Kazuhisa Ishimaru, Noriaki Shirai, Hossein Tehrani Niknejad, Seiichi Mita, Qiwei Xie, Qian Long
  • Publication number: 20160252617
    Abstract: In an object recognition apparatus, a range point acquirer irradiates each of irradiation areas arranged in a horizontally and vertically extending grid and forming a detection area for detecting a target with laser light and receives the reflected light from the respective irradiation areas, thereby acquiring a plurality of range points representing per-irradiation area coordinates of the target. A noise remover is configured to, based on either or both of degrees of angle proximity and degrees of distance proximity between a plurality of subject range points to be determined whether to be a noise point, of the plurality of range points, as viewed from a reference point, determine whether or not each of the subject range points is a noise point, and remove the noise point from the plurality of range points. An object recognizer uses the plurality of range points other than the noise points to recognize the object.
    Type: Application
    Filed: February 26, 2016
    Publication date: September 1, 2016
    Inventors: Hossein Tehrani Niknejad, Utsushi Sakai, Takashi Ogawa, Seiichi Mita, Qiwei Xie
  • Patent number: 9367735
    Abstract: In an object identification device, each score calculator extracts a feature quantity from the image, and calculates a score using the extracted feature quantity and a model of the specified object. The score represents a reliability that the specified object is displayed in the image. A score-vector generator generates a score vector having the scores as elements thereof. A cluster determiner determines, based on previously determined clusters in which the score vector is classifiable, one of the clusters to which the score vector belongs as a target cluster. An object identifier identifies whether the specified object is displayed in the image based on one of the identification conditions. The one of the identification conditions is previously determined for the target cluster determined by the cluster determiner.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: June 14, 2016
    Assignee: DENSO CORPORATION
    Inventors: Kazuhito Takenaka, Takashi Bando, Hossein Tehrani Niknejad, Masumi Egawa
  • Publication number: 20140334719
    Abstract: In an object identification device, each score calculator extracts a feature quantity from the image, and calculates a score using the extracted feature quantity and a model of the specified object. The score represents a reliability that the specified object is displayed in the image. A score-vector generator generates a score vector having the scores as elements thereof. A cluster determiner determines, based on previously determined clusters in which the score vector is classifiable, one of the clusters to which the score vector belongs as a target cluster. An object identifier identifies whether the specified object is displayed in the image based on one of the identification conditions. The one of the identification conditions is previously determined for the target cluster determined by the cluster determiner.
    Type: Application
    Filed: May 7, 2014
    Publication date: November 13, 2014
    Applicant: DENSO CORPORATION
    Inventors: Kazuhito TAKENAKA, Takashi BANDO, Hossein TEHRANI NIKNEJAD, Masumi EGAWA
  • Publication number: 20140200801
    Abstract: When a travel path is to be generated for a vehicle, road surface lines (white lines, etc.) delimiting the traffic lane of the vehicle, and also external objects in the vehicle environment, are detected and registered as respective obstacles. Specific points are defined at appropriate locations on each obstacle, and the travel path is generated by connecting respective mid-point positions between opposed pairs of specific points, each pair defined on respective ones of an opposed (left-side, right-side) pair of the registered obstacles.
    Type: Application
    Filed: January 14, 2014
    Publication date: July 17, 2014
    Applicant: DENSO CORPORATION
    Inventors: Tomohiko Tsuruta, Yusuke Ueda, Takeshi Hatoh, Takayuki Kondoh, Naoya Inoue, Hossein Tehrani Niknejad, Seiichi Mita