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특허 상세정보

Distance detection method using images

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G06K-009/00    G08G-010/17    G01C-003/00    H04N-007/00   
미국특허분류(USC) 382/103 ; 382/104 ; 382/106 ; 382/278 ; 340/937 ; 356/031.4 ; 348/116 ; 348/140 ; 348/170
출원번호 US-0901066 (1997-07-28)
우선권정보 JP-0206687 (1996-08-06)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Kanesaka & Takeuchi
인용정보 피인용 횟수 : 13  인용 특허 : 11
초록

In a distance detection method, a pair of image data representing a pattern of images is obtained by using a pair of image sensors for receiving optical images. Then, a detection target extracted from each of the image data is captured while sequentially shifting positions of divisions in respective groups of divisions from window part data corresponding to a visual field to provide combinations, each having a pair of divisions, and a correlation value is calculated between each pair of the divisions. Also, a precision at a best correlation point as an i...

대표
청구항

[ What is claimed is:] [1.] A distance detection method comprising:obtaining a pair of image data representing a pattern of images by using a pair of image sensors for receiving optical images via different optical paths;capturing a detection target extracted from each of the image data while sequentially shifting positions of divisions in respective groups of the divisions from window part data corresponding to a visual field to provide combinations, each comprising a pair of the divisions, and calculating, respectively, a correlation value between each...

이 특허에 인용된 특허 (11)

  1. Kawamura Kazuo (Asaka JPX) Miida Takashi (Kanagawa JPX) Iwabuchi Hiroshi (Kanagawa JPX) Hasegawa Jun (Kanagawa JPX). Correlation phase difference type focus detecting interpolation. USP1994105357310.
  2. Suzuki Akira (Kawasaki JPX) Saito Takao (Yokohama JPX). Detector for detecting focusing state or distance of photographed object. USP1997045619301.
  3. Kajiwara Yasuya (Himeji JPX). Distance measuring apparatus. USP1996095557323.
  4. Hardin Larry C. (735 Harrison Bandon OR 97411) Nash Larry V. (31770 Chantrelle La. Gold Beach OR 97444). Electro-optical range finding and speed detection system. USP1997065642299.
  5. Utagawa, Ken. Focus detection apparatus. USP1985124561749.
  6. Uchiyama Shigeyuki (Tokyo JPX). Focus detection device and method. USP1997035612763.
  7. Nishibe Takashi (Kanagawa JPX). Image position detecting device. USP1992055113215.
  8. Choate William C. (6247 Twin Oaks Cir. Dallas TX 75240) Talluri Rajendra K. (7131 Woodhollow Dr. ; Apt. 108 Austin TX 78731). Method and system for image-sequence-based target tracking and range estimation. USP1995065422828.
  9. Yokoyama Shotaro (Kanagawa JPX) Nishibe Takashi (Kanagawa JPX). Object-detecting system for optical instrument. USP1997025602944.
  10. Kawamura Kazuo (Miyagi JPX) Hasegawa Jun (Miyagi JPX) Miida Takashi (Miyagi JPX). Phase difference detection type rangefinder and method of measuring subject distance. USP1996105568249.
  11. Bhanu Bir (889 29th NW. New Brighton MN 55112) Burger Wilhelm (Hagenstrasse ; 61/5 ; A-4040 Linz ATX). System for computing the self-motion of moving images devices. USP1990114969036.