[특허]Detection of barcodes in binary images with arbitrary orientation

Detection of barcodes in binary images with arbitrary orientation 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06K-007/10 G06K-009/20 G06K-009/40
출원번호	US-0565668 (1990-08-10)
발명자 / 주소	Willsie Todd D. (Seattle WA)
출원인 / 주소	The Boeing Company (Seattle WA 02)
인용정보	피인용 횟수 : 84 인용 특허 : 0

초록 ▼

The location and orientation of a barcode block is determined by first producing an image of the document that excludes the barcode block and producing a second image wherein the spaces in the barcode block have been deleted thereby providing a solid rectangular block. The two images are subtracted to reject large background clutter while displaying with certainty the full image of the barcode block. Thereafter, down-sampling occurs to remove small clutter and other non-barcode objects while locating the centroid of each barcode block. The image containing the centroid is up-scaled and used to calculate the position of the barcode block in the original document for use by a barcode reader.

대표청구항 ▼

A method of determining the location of a barcode block having a predetermined size and shape on a document having extraneous printed matter thereon comprising: receiving a digital image of a scanned document as an input signal; reducing the input signal to produce a first down-sampled image that is over-sampled; reducing the input signal to produce a second down-sampled image that is under-sampled; deleting barcode image pixels from the under-sampled image to produce a barcode free image; subtracting the barcode free image from the over-sampled image to produce an image definitely showing the barcode block location but not showing large sized background clutter that is common to the barcode free image and the over-sampled image; and down-sampling the barcode block location containing image and thereafter removing small sized background clutter thereby to produce an image showing the barcode block location which is substantially free of background clutter.

이 특허를 인용한 특허 (84)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Detection of barcodes in binary images with arbitrary orientation 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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연합인증

Detection of barcodes in binary images with arbitrary orientation 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

전체(0) 논문(0) 특허(0) 보고서(0)

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이 특허를 인용한 특허 (84)

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