KR910020595A - Directional Detection System of Fingerprint Image - Google Patents

Directional Detection System of Fingerprint Image Download PDF

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Publication number
KR910020595A
KR910020595A KR1019900007897A KR900007897A KR910020595A KR 910020595 A KR910020595 A KR 910020595A KR 1019900007897 A KR1019900007897 A KR 1019900007897A KR 900007897 A KR900007897 A KR 900007897A KR 910020595 A KR910020595 A KR 910020595A
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KR
South Korea
Prior art keywords
fingerprint image
data
memory
address
register
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Application number
KR1019900007897A
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Korean (ko)
Inventor
호진형
Original Assignee
이헌조
주식회사 금성사
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Priority to KR1019900007897A priority Critical patent/KR910020595A/en
Publication of KR910020595A publication Critical patent/KR910020595A/en

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Abstract

내용 없음No content

Description

지문영상의 방향성 검출 시스템Directional Detection System of Fingerprint Image

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 지문영상의 방향성 검출 시스템 구성도, 제2도 (가)내지 (아)는 본 고안을 설명하기 위한 7×7디렉션 마스크를 보인 설명도.1 is a configuration diagram of a directional detection system of a fingerprint image according to the present invention, and FIG. 2 (a) to (h) are explanatory views showing a 7 × 7 direction mask for explaining the present invention.

Claims (2)

지문영상의 인식에 있어서, 지문영상 데이타를 저장하는 지문영상 메모리(1)의 데이타를 8×8블럭으로 억세스하기 위해 시스템 타이밍 클록 데이타를 발생하는 발진 클록부(2)의 출력을 인가받아 제어하는 제어부(3)의 제어에 따라 칼럼 어드레스 및 로우(ROW) 어드레스 카운트를 하는 어드레스 카운트(4-7)를 통해 메모리 어드레스를 발생시키고, 그에 따라7×7마스크 어드레스를 발생시킨 뒤 디렉션 마스크 어드레스를 발생시켜, 각각 7×7디렉션 마스크 데이타를 저장하는 메모리(M1-M8)의 데이타와 상기 지문영상 메모리(1)의 7×7윈도우 데이타를 비교부(12)를 통해 각기 비교하며 매취(match)포인트를 찾은 후, 카운터(C1-C8)를 통해 카운트하여 쉬프트 레지스터(R1-R8)에 로드 시키고, 제어부(17)를 통해 그 쉬프트 레지스터(R1-R8)를 제어하여 가장 많은 매취포인트가 있는 디렉션을 찾아 블럭 디렉션 메모리(16)에 저장하도록 구성한 것을 특징으로 하는 지문영상의 방향성 검출 시스템.In the recognition of the fingerprint image, the output of the oscillation clock unit 2 which generates the system timing clock data to access the data of the fingerprint image memory 1 storing the fingerprint image data as 8 x 8 blocks is controlled. Under the control of the controller 3, the memory address is generated through the address count 4-7, which performs the column address and the row address count, and accordingly generates the 7 × 7 mask address and then generates the direction mask address. The data of the memory M1-M8, which stores the 7 × 7 direction mask data, and the 7 × 7 window data of the fingerprint image memory 1, respectively, are compared through the comparison unit 12, and match points are obtained. Is found, the counter is counted through the counters C1-C8 and loaded into the shift registers R1-R8, and the shift registers R1-R8 are controlled by the controller 17. The fingerprint image direction detection system, characterized in that is configured to store a look direction block memory 16, the direction. 제1항에 있어서, 각 쉬프트 레지스터(R1-R8)에 로드된 매취포인트의 카운트 값을 최상위 비트부터 비교하여 하나라도 카운트 값이 있는 비트에서 카운트 값이 없는 레지스터는 디스에이블 시키는 과정으로 쉬프트 시킨 후 마지막 하나의 레지스터에 카운트 값이 남았을 때, 그 값을 블럭 디렉션 메모리(16)에 저장하도록 하여 디렉션 찾기를 제어하는 것을 특징으로 하는 지문영상의 방향성 검출 시스템.2. The method of claim 1, wherein the count value of the acquisition point loaded in each shift register (R1-R8) is compared from the most significant bit, and the register having no count value is shifted by disabling the register having no count value in at least one bit. And when the count value remains in the last one register, the value is stored in the block direction memory (16) to control the direction search. ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.※ Note: This is to be disclosed by the original application. ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.※ Note: This is to be disclosed by the original application.
KR1019900007897A 1990-05-30 1990-05-30 Directional Detection System of Fingerprint Image KR910020595A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019900007897A KR910020595A (en) 1990-05-30 1990-05-30 Directional Detection System of Fingerprint Image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019900007897A KR910020595A (en) 1990-05-30 1990-05-30 Directional Detection System of Fingerprint Image

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KR910020595A true KR910020595A (en) 1991-12-20

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KR1019900007897A KR910020595A (en) 1990-05-30 1990-05-30 Directional Detection System of Fingerprint Image

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100825773B1 (en) * 2005-08-23 2008-04-28 삼성전자주식회사 Method and apparatus for estimating orientation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100825773B1 (en) * 2005-08-23 2008-04-28 삼성전자주식회사 Method and apparatus for estimating orientation

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