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"" 따옴표 내의 구문과 완전히 일치하는 문서만 검색 예) "Transform and Quantization"

특허 상세정보

Scan reading method including density measuring and edge detection

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G01N-021/86   
미국특허분류(USC) 250/561 ; 250/234
출원번호 US-0871317 (1992-04-20)
우선권정보 JP-0088783 (1991-04-19); JP-0143383 (1991-06-14)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 17  인용 특허 : 0
초록

A scan reading method according to this invention includes the steps of: causing a line memory to store original image data for one line; obtaining a density average value of the one-line image data or a variation rate thereof; and detecting the edge of the original by comparing the average density value or the variation rate thereof with a predetermined threshold value after finishing a scan over the original or during the scan. A scan reading method also includes the steps of: preparing a density histogram from the one line image data in the original r...

대표
청구항

A scan reading method in an image reader for detecting an edge of an original, the image reader including a platen with the original mounted thereon, and a scanner including a light source for illuminating said original sequentially or simultaneously in a main scan direction while being relatively moved in a subscan direction substantially orthogonal to said main scan direction, wherein an image of said original is photoelectrically read at each pixel by two-dimensionally scanning said original, and detecting at least one edge of said original in said su...

이 특허를 인용한 특허 피인용횟수: 17

  1. Lee, Jae-chool. Apparatus and method for detecting an edge of three-dimensional image data. USP2005056900801.
  2. Wang Laiqiang,JPX ; Furuhata Fujio,JPX. Apparatus for reading image and method therefor. USP1998085796876.
  3. Yamazaki Yoshirou,JPX. Auto setup process. USP2001076259825.
  4. Baba Nobuyuki,JPX ; Kudo Koichi,JPX ; Aoki Sumiaki,JPX. Document sensing device for an image forming apparatus. USP2001066252682.
  5. Ilbery Peter William Mitchell,AUX. Force field halftoning. USP2000096124844.
  6. Kakutani Toshiaki,JPX. Image processing apparatus and image processing method. USP2001046215561.
  7. Takashi Honda JP; Yoko Fujiwara JP. Image processing apparatus and method for adjustment of density of copied image. USP2002056384939.
  8. Naiki, Takashi; Nishide, Hiroshi; Miyamura, Makoto. Image processor. USP2005056898330.
  9. Shiota Kazuo,JPX. Image reproducing method and apparatus including compressing a dynamic range of a read-out image signal. USP2000096122076.
  10. Hamburg, Mark. Method and apparatus for generating color toning curves. USP2010117830548.
  11. Publicover, Nelson George. Method and system for computerized high rate image processing. USP2003046542636.
  12. Publicover, Nelson George. Method and system for computerized high-rate image processing. USP2004106804399.
  13. Morimura Kazuhiko,JPX. Object imaging apparatus with object slant correction facility. USP1999085940128.
  14. Baba Nobuyuki,JPX ; Murai Toshiharu,JPX ; Aoki Sumiaki,JPX ; Kudo Koichi,JPX. Original edge detecting system and optical sensor. USP1998035729024.
  15. Neufeld,Richard; Cummings,Calvin D.; Warnes,Allan. Printing plate registration and optical alignment device including locating at least a part of a reference edge in at least one digital camera image. USP2008117456379.
  16. Chen Daniel (Hsinchu TWX) Tasy Alpha (Hsinchu TWX) Chen Kevin (Hsinchu TWX). To drive the optical system independently by CPU in flatbed scanners. USP1997055633745.
  17. Schwitzky Volkmar Rolf,DEX. Web or sheet edge position measurement process and device. USP1999085932888.