KR102323200B1

KR102323200B1 - Method Comparing The Forged Sealing

Info

Publication number: KR102323200B1
Application number: KR1020190175375A
Authority: KR
Inventors: 이중; 강태이; 김홍석; 임성호
Original assignee: 대한민국
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2021-11-09
Also published as: KR20210082918A

Abstract

본 발명은 제어부와, 상기 제어부에 연결되며 위조 인영 비교 프로그램이 저장된 저장부와, 상기 제어부에 연결된 표시부와, 상기 제어부에 연결되어 사용자의 명령 입력 수단이 되는 입력부를 가지는 연산본체와, 상기 연산본체에 연결되어 대상물을 촬영하는 수단인 촬영기기로 이루어진 위조 인영 비교 시스템에서 실행되며; 원본 인장이 날인되어 저장부에 저장된 복수의 준비인영에서 날인영역이 분리되는 준비인영 연산 단계와, 복수의 준비인영이 정합되는 준비인영 정합 단계와, 정합된 복수의 준비인영으로부터 기준인영이 생성되는 기준인영 생성 단계와, 기준인영에 대한 각 준비인영의 에러율이 연산되는 준비인영 대비연산 단계로 이루어진 준비인영 특성값 연산 단계와; 저장부에 저장된 비교인영에서 날인영역이 분리되는 비교인영 연산 단계와, 상기 비교인영과 기준인영의 에러율이 연산되는 비교인영 대비연산 단계로 이루어진 비교인영 특성값 연산 단계와; 준비인영의 에러율들 분포에 대한 비교인영의 에러율이 표시부에 표시되는 것을 특징으로 하는 위조 인영 비교 방법에 관한 것이다. The present invention includes a control unit, a storage unit connected to the control unit and storing a counterfeit imprint comparison program, a display unit connected to the control unit, and an input unit connected to the control unit and serving as a user's command input means; is connected to and executed in a counterfeit imprint comparison system comprising a photographing device that is a means for photographing an object; A preparation stamp calculation step in which the stamp area is separated from a plurality of preparation stamps stored in the storage unit after the original seal is sealed, a preparation stamp registration step in which a plurality of preparation stamps are matched, and a reference stamp is generated from the matched plurality of preparation stamps a preparation impression characteristic value calculation step comprising a reference impression generation step and a preparation impression comparison operation step in which an error rate of each preparation impression with respect to the reference impression is calculated; a comparison stamp characteristic value calculation step comprising: a comparison stamp calculation step in which a sealing area is separated from the comparison stamp stored in the storage unit; The present invention relates to a method for comparing counterfeit impressions, characterized in that the error rate of comparative impressions with respect to the distribution of error rates of ready impressions is displayed on a display unit.

Description

Method Comparing The Forged Sealing

본 발명은 위조 인영 비교 방법에 관한 것으로, 정밀한 날인영역의 추출이 가능하며, 복수의 준비 인영으로부터 연산된 에러율의 확률분포와 비교 인영의 에러율이 제공되므로 위조 여부에 대한 객관적인 자료가 제공되는 한편, 정밀하게 추출된 날인영역 정보에 의해 보다 정확한 자료가 제공되는 위조 인영 비교 방법에 관한 것이다. The present invention relates to a method for comparing counterfeit imprints, and it is possible to accurately extract the imprint area, and since the probability distribution of error rates calculated from a plurality of prepared imprints and the error rate of comparison imprints are provided, objective data on whether or not counterfeiting is provided, It relates to a method for comparing counterfeit imprints in which more accurate data are provided by precisely extracted imprint area information.

기존의 인영 비교 방법은 주로 비교대상인 두 개의 인영을 투명한 필름에 확대 복사하여 중첩하여 인영의 진위 여부를 확인하며, 진위 여부를 판단하는데 있어서 경험에 기반하여 판단하므로 진위 여부 판정에 객관적인 기준이 정립되어 있지 않았다. 이러한 진위 여부 판단 방법은 판단하는 개인의 숙련도 및 관점에 따라 상이한 판단 결과가 나타날 수 있으며 일관되지 않은 결과는 법적 분쟁의 문제를 발생시키기도 하였다.The existing imprint comparison method mainly checks the authenticity of the imprints by magnifying and superimposing two imprints to be compared on a transparent film. there wasn't In this method of determining the authenticity, different judgment results may appear depending on the skill and point of view of the individual making the judgment, and inconsistent results may cause legal disputes.

필름 출력에 기반을 둔 기존의 방법은 인영 진위 판정에 대한 요구 발생 시 전문 감정 기관에 의뢰되어 위와 같은 방법으로 위조 여부가 판정되고 있으나, 문제가 되는 인영이 날인되어 있는 서류를 감정기관에 송달하고 판정을 위하여 확대 출력물을 제작하는 등 즉각적인 판정 결과를 획득하기 어려운 문제점도 있었다.In the existing method based on film printing, when a request to determine the authenticity of a seal occurs, it is commissioned to a specialized appraisal agency to determine forgery in the same way as above. There was also a problem in that it was difficult to obtain an immediate judgment result, such as producing an enlarged printout for judgment.

대한민국 등록번호 제10-1140331호 등록특허공보Republic of Korea Registration No. 10-1140331 Patent Publication

본 발명은 상기와 같은 종래 기술이 가지는 문제점을 해결하기 위하여 제안된 것으로, 각종 계약이 필요한 현장에서 즉시 인영의 진위를 객관적으로 판단할 수 있는 자료가 제공되며, 진본인영인 준비인영의 에러율에 대한 확률분포에 기반하여 비교인영의 에러율이 제공되므로 보다 신뢰할 수 있으며, 날인영역의 정밀한 추출이 가능하므로 정확한 에러율이 획득되는 인용 비교 방법을 제공하는 것을 에 근거한 인영 비교 자료를 제공할 수 이 인영 비교 방법을 제공하는 것을 목적으로 한다.The present invention has been proposed to solve the problems of the prior art as described above, and provides data that can objectively determine the authenticity of imprints immediately at the site where various contracts are required, Since the error rate of comparative impressions is provided based on the probability distribution, it is more reliable, and since precise extraction of the stamp area is possible, it is possible to provide comparison data based on the citation comparison method in which an accurate error rate is obtained. aims to provide

상기와 같은 목적을 위하여 본 발명은 제어부와, 상기 제어부에 연결되며 위조 인영 비교 프로그램이 저장된 저장부와, 상기 제어부에 연결된 표시부와, 상기 제어부에 연결되어 사용자의 명령 입력 수단이 되는 입력부를 가지는 연산본체와, 상기 연산본체에 연결되어 대상물을 촬영하는 수단인 촬영기기로 이루어진 위조 인영 비교 시스템에서 실행되며; 원본 인장이 날인되어 저장부에 저장된 복수의 준비인영에서 날인영역이 분리되는 준비인영 연산 단계와, 복수의 준비인영이 정합되는 준비인영 정합 단계와, 정합된 복수의 준비인영으로부터 기준인영이 생성되는 기준인영 생성 단계와, 기준인영에 대한 각 준비인영의 에러율이 연산되는 준비인영 대비연산 단계로 이루어진 준비인영 특성값 연산 단계와; 저장부에 저장된 비교인영에서 날인영역이 분리되는 비교인영 연산 단계와, 상기 비교인영과 기준인영의 에러율이 연산되는 비교인영 대비연산 단계 로 이루어진 비교인영 특성값 연산 단계와; 준비인영의 에러율들 분포에 대한 비교인영의 에러율이 표시부에 표시되는 위조 인영 비교 방법을 제공한다.For the above purpose, the present invention has a control unit, a storage unit connected to the control unit and storing a counterfeit imprint comparison program, a display unit connected to the control unit, and an input unit connected to the control unit to become a user's command input means. It is executed in a counterfeit impression comparison system comprising a main body and a photographing device that is connected to the operation body and is a means for photographing an object; A preparation stamp calculation step in which the stamp area is separated from a plurality of preparation stamps stored in the storage unit after the original seal is sealed, a preparation stamp registration step in which a plurality of preparation stamps are matched, and a reference stamp is generated from the matched plurality of preparation stamps a preliminary imprint generating step, and a ready imprint characteristic value calculation step comprising a ready imprint comparison calculation step in which an error rate of each ready imprint with respect to the reference imprint is calculated; a comparison stamp characteristic value calculation step comprising : a comparison stamp calculation step in which a sealing area is separated from the comparison stamp stored in the storage; Provided is a method for comparing false prints in which an error rate of a comparison print with respect to a distribution of error rates of a ready print is displayed on a display unit.

상기에서, 준비인영 연산 단계는 이진화되는 단계(ST-1201, 이진화 단계)와, 준비인영의 엣지를 이루는 픽셀의 정보가 추출되는 단계(ST-1202, 엣지정보 추출 단계)와, 준비인영의 엣지를 이루는 픽셀들이 연결된 엣지라인이 추출되는 단계(ST-1203, 엣지라인정보 추출 단계)와, 준비인영의 인영 이미지에서 날인영역이 추출된는 단계(ST-1204, 날인영역 추출)를 포함하는 것을 특징으로 한다.In the above, the readiness calculation step includes the binarization step (ST-1201, binarization step), the step of extracting pixel information constituting the edge of the ready impression (ST-1202, edge information extraction step), and the edge of the ready impression A step of extracting an edge line to which pixels constituting the are connected (ST-1203, extracting edge line information), and extracting an imprinted area from the imprinted image of the ready imprint (ST-1204, extracting imprinted area) do it with

상기에서, 비교인영 연산 단계(ST-125)는 비교 인영이 이진화되는 단계(ST-1251, 이진화 단계)와, 비교인영의 엣지를 이루는 픽셀의 정보가 추출되는 단계(ST-1252, 엣지정보 추출 단계)와, 비교인영의 엣지를 이루는 픽셀들이 연결된 엣지라인이 추출되는 단계(ST-1253, 엣지라인정보 추출 단계)와, 비교인영의 인영 이미지에서 날인영역이 추출되는 단계(ST-1254, 날인영역 추출)를 포함하는 것을 특징으로 한다.In the above, the comparison image operation step (ST-125) includes the step of binarizing the comparison image (ST-1251, binarization step), and the step of extracting information of pixels constituting the edge of the comparison image (ST-1252, edge information extraction). step), a step of extracting an edge line in which pixels constituting the edge of the comparison stamp are connected (ST-1253, edge line information extraction step), and a step of extracting a sealing area from the imprint image of the comparison stamp (ST-1254, imprinting) region extraction).

상기에서, 준비인영과 비교인영의 엣지정보 추출 단계는 준비인영 및 비교인영을 이루는 픽셀들의 3×3 픽셀의 색상값과 3×3 크기의 제1 마스크의 각 값을 곱하기 하여 3×3 픽셀 제1 값(G1)을 연산하고, 3×3 픽셀의 색상값과 3×3 크기의 제2 마스크의 각 값을 곱하기 하여 3×3 픽셀 제2 값(G2)을 연산하며; 픽셀 제1 값(G1)의 각 픽셀값의 절대값과 픽셀 제2 값(G2)의 각 픽셀값의 절대값의 더하기 하여 연산된 픽셀 제3값(G3)에 의하여 엣지를 이루는 픽셀들의 좌표가 도출되는 것을 특징으로 한다.In the above, the step of extracting edge information of the ready impression and the comparative impression is performed by multiplying the color value of the 3×3 pixel of the pixels constituting the ready impression and the comparative impression by each value of the first mask of the 3×3 size to produce a 3×3 pixel product. calculating a value of 1 (G1), multiplying a color value of 3×3 pixels by each value of a second mask having a size of 3×3 to calculate a second value of 3×3 pixels (G2); The coordinates of pixels forming the edge are determined by the third pixel value G3 calculated by adding the absolute value of each pixel value of the pixel first value G1 and the absolute value of each pixel value of the pixel second value G2. It is characterized in that it is derived.

상기에서, 준비인영과 비교인영의 엣지라인정보 추출 단계는 임의의 하나의 엣지픽셀을 지나며 설정값 이상의 개수의 나머지 엣지픽셀을 지나는 직선 또는 원이 엣지라인정보 추출되어 저장부에 저장되는 것을 특징으로 한다.In the above, in the step of extracting edge line information for preparation and comparison, the edge line information is extracted and stored in the storage unit by a straight line or circle passing through any one edge pixel and passing the remaining edge pixels of a number greater than or equal to a set value. do.

상기에서, 준비인영 정합 단계는 복수의 준비인영 중 1개의 준비인영(제1 준비인영)이 임의로 선택되고 복수의 준비인영 중 선택되지 않은 다른 1개의 준비인영(제2 준비인영)이 선택되며, 1개의 준비인영(제1 준비인영)을 이루는 픽셀에 대하여 다른 1개의 준비인영(제2 준비인영)을 이루는 픽셀의 좌표가 가로 방향으로 1픽셀씩 증가되거나 감소되면서 픽셀이 중첩되어 인영영역의 픽셀 중첩이 가장 많은 픽셀 좌표가 다른 1개의 준비인영(제2 준비인영)의 변경된 가로 좌표로 되고,In the above, in the preparation step matching step, one ready person (first ready person) is arbitrarily selected from among the plurality of ready person, and the other one ready person (second ready person) is selected from among the plurality of ready person, Pixels in the impression area are overlapped as the coordinates of the pixels constituting one ready impression (first ready impression) are increased or decreased by 1 pixel in the horizontal direction with respect to the pixel constituting the other ready impression (second ready impression). The pixel coordinates with the most overlap become the changed abscissa coordinates of the other one (second preparation),

1개의 준비인영(제1 준비인영)에 대하여 다른 1개의 준비인영(제2 준비인영)을 이루는 픽셀의 좌표가 세로 방향으로 1픽셀씩 증가되거나 감소되면서 픽셀이 중첩되어 인영영역의 개수 중첩이 가장 많은 픽셀 좌표가 다른 1개의 준비인영(제2 준비인영)의 변경된 세로 좌표로 되는 좌표 정합 단계와;As the coordinates of the pixels constituting the other ready impression (second preparation impression) are increased or decreased by 1 pixel in the vertical direction for one preparation impression (first preparation impression), the pixels overlap, so that the overlap of the number of impression areas is the most a coordinate matching step in which many pixel coordinates are changed to the changed ordinates of one other ready-made image (second ready-made image);

1개의 준비인영(제1 준비인영)과 가로 세로 좌표가 정합된 준비인영(제2 준비인영)의 중심점이 도출되는 중심점 도출 단계와;A center point derivation step in which the center point of one ready-in-young (first ready-in-young) and the horizontal and vertical coordinates of the ready-in-young (second ready-in-young) is derived;

1개의 준비인영(제1 준비인영)에 대하여 가로 세로 좌표가 정합된 준비인영(제2 준비인영)을 이루는 픽셀의 회전 위치가 증분 또는 감분되면서 픽셀이 중첩되어 인영영역의 픽셀 중첩이 가장 많은 각도에서의 좌표가 가로 세로 좌표가 정합된 준비인영(제2 준비인영)의 픽셀 좌표가 되는 회전 정합 단계;로 이루어지며, The angle with the largest overlap of pixels in the imprint area because the pixels overlap as the rotation position of the pixels forming the ready imprint (the second preparatory imprint) whose horizontal and vertical coordinates are matched for one ready imprint (the first ready imprint) is incremented or decremented. A rotation matching step in which the coordinates in the horizontal and vertical coordinates become the pixel coordinates of the ready-in-young (the second ready-in-young) in which the horizontal and vertical coordinates are matched; consists of,

임의로 선택된 1개의 준비인영(제1 준비인영)에 대하여 나머지 준비인영들에 대해서도 상기 좌표 정합 단계와, 중심점 도출 단계와, 회전 정합 단계가 실행되는 것을 특징으로 하는 한다.It is characterized in that the coordinate matching step, the center point derivation step, and the rotation matching step are executed also for the remaining ready-ups with respect to one arbitrarily selected ready-in-young (first ready-in-young).

상기에서, 준비인영 정합 단계는 복수의 준비인영 중 1개의 준비인영(제1 준비인영)이 임의로 선택되고 복수의 준비인영 중 선택되지 않은 다른 1개의 준비인영(제2 준비인영)이 선택되며,In the above, in the preparation step matching step, one ready person (first ready person) is arbitrarily selected from among the plurality of ready person, and the other one ready person (second ready person) is selected from among the plurality of ready person,

1개의 준비인영(제1 준비인영)과 다른 1개의 준비인영(제2 준비인영)의 중심점이 도출되는 중심점 도출 단계와;a center point deriving step in which the center points of one ready person young (first ready person young) and another one ready person young (second ready person young) are derived;

1개의 준비인영(제1 준비인영)에 대하여 다른 1개의 준비인영(제2 준비인영)을 이루는 픽셀의 회전 위치가 증분 또는 감분되면서 픽셀이 중첩되어 인영영역의 픽셀 중첩이 가장 많은 각도에서의 좌표로 픽셀 좌표가 변경되는 회전 정합 단계와;The coordinates at the angle at which the pixel overlap of the impression area is the most due to overlapping pixels as the rotation position of the pixels constituting the other ready impression (second preparation impression) is incremented or decremented with respect to one preparation impression (first preparation impression) a rotation matching step in which pixel coordinates are changed to ;

1개의 준비인영(제1 준비인영)을 이루는 픽셀에 대하여 다른 1개의 준비인영(제2 준비인영)을 이루는 픽셀의 좌표가 가로 방향으로 1픽셀씩 증가되거나 감소되면서 픽셀이 중첩되어 인영영역의 픽셀 중첩이 가장 많은 픽셀 좌표가 다른 1개의 준비인영(제2 준비인영)의 변경된 가로 좌표로 되고,Pixels in the impression area are overlapped as the coordinates of the pixels constituting one ready impression (first ready impression) are increased or decreased by 1 pixel in the horizontal direction with respect to the pixel constituting the other ready impression (second ready impression). The pixel coordinates with the most overlap become the changed abscissa coordinates of the other one (second preparation),

1개의 준비인영(제1 준비인영)에 대하여 다른 1개의 준비인영(제2 준비인영)을 이루는 픽셀의 좌표가 세로 방향으로 1픽셀씩 증가되거나 감소되면서 픽셀이 중첩되어 인영영역의 개수 중첩이 가장 많은 픽셀 좌표가 다른 1개의 준비인영(제2 준비인영)의 변경된 세로 좌표로 되는 좌표 정합 단계;로 이루어지며, As the coordinates of the pixels constituting the other ready impression (second preparation impression) are increased or decreased by 1 pixel in the vertical direction for one preparation impression (first preparation impression), the pixels overlap, so that the overlap of the number of impression areas is the most It consists of a coordinate matching step in which many pixel coordinates become the changed vertical coordinates of another one ready-in (second ready-in-young);

임의로 선택된 1개의 준비인영(제1 준비인영)에 대하여 나머지 준비인영들에 대해서도 상기 중심점 도출 단계와, 회전 정합 단계와, 좌표 정합 단계가 실행되는 것을 특징으로 한다.It is characterized in that the center point derivation step, the rotational matching step, and the coordinate matching step are executed for the remaining ready-in-young for one arbitrarily selected ready-in-young (first ready-in-young).

상기에서, 기준인영 생성 단계에서는 정합된 복수의 준비인영의 각 위치의 픽셀의 평균값이 연산되어, 평균값이 그 위치에서 픽셀값이 되는 기준인영이 생성되는 것을 특징으로 한다.In the above, the reference imprint generating step is characterized in that the average value of pixels at each position of the plurality of matched ready imprints is calculated, and a reference imprint whose average value becomes the pixel value at that position is generated.

상기에서, 비교인영 연산 단계와 비교인영 대비연산 단계 사이에는 비교인영 정합 단계가 더 구비되며;In the above, a comparison-impression matching step is further provided between the comparison-impression calculation step and the comparison-impression comparison operation step;

상기 비교인영 정합 단계는 기준인영에 대하여 비교인영을 이루는 픽셀의 좌표가 가로 방향으로 1픽셀씩 증가되거나 감소되면서 픽셀이 중첩되어 인영영역의 픽셀 중첩이 가장 많은 픽셀 좌표가 비교인영의 변경된 가로 좌표로 되고,In the comparison image matching step, the coordinates of pixels constituting the comparative impression with respect to the reference image are increased or decreased by 1 pixel in the horizontal direction, and the pixels are overlapped, so that the pixel coordinates with the largest overlap of pixels in the image area are changed to the changed horizontal coordinates of the comparison image. become,

기준인영에 대하여 변경된 가로 좌표를 가지는 비교인영을 이루는 픽셀의 좌표가 세로 방향으로 1픽셀씩 증가되거나 감소되면서 픽셀이 중첩되어 인영영역의 개수 중첩이 가장 많은 픽셀 좌표가 비교인영의 변경된 세로 좌표로 되는 좌표 정합 단계와;The coordinates of the pixels forming the comparative image having the changed abscissa with respect to the reference image are increased or decreased by 1 pixel in the vertical direction, and the pixels are overlapped. coordinate matching step;

기준인영과 가로 세로 좌표가 정합된 비교인영의 중심점이 도출되는 중심점 도출 단계와;a center point deriving step of deriving a center point of a comparison mark in which the horizontal and vertical coordinates are matched with the reference mark;

기준인영에 대하여 가로 세로 좌표가 정합된 비교인영을 이루는 픽셀의 회전 위치가 증분 또는 감분되면서 픽셀이 중첩되어 인영영역의 픽셀 중첩이 가장 많은 각도에서의 좌표가 가로 세로 좌표가 정합된 비교인영의 픽셀 좌표가 되는 회전 정합 단계;로 이루어지는 것을 특징으로 한다.The pixel of the comparison image in which the abscissa and ordinate coordinates are matched is the coordinate at the angle where the pixel overlap of the image area is greatest because the pixels are overlapped as the rotation position of the pixel forming the comparison image in which the horizontal and vertical coordinates are matched with the reference image is incremented or decremented. It characterized in that it consists of; a rotation matching step that becomes the coordinates.

기준인영에 대하여 비교인영을 이루는 픽셀의 좌표가 세로 방향으로 1픽셀씩 증가되거나 감소되면서 픽셀이 중첩되어 인영영역의 개수 중첩이 가장 많은 픽셀 좌표가 비교인영의 변경된 세로 좌표로 되는 좌표 정합 단계와;a coordinate matching step in which the coordinates of the pixels constituting the comparison image with respect to the reference image are increased or decreased by 1 pixel in the vertical direction, and the pixels are overlapped, so that the coordinates of the pixel with the largest overlap in the number of impression areas become the changed vertical coordinates of the comparison image;

상기 비교인영 정합 단계는 기준인영과 비교인영의 중심점이 도출되는 중심점 도출 단계와;The comparison impression matching step includes a center point deriving step in which the center points of the reference impression and the comparative impression are derived;

기준인영에 대하여 비교인영을 이루는 픽셀의 회전 위치가 증분 또는 감분되면서 픽셀이 중첩되어 인영영역의 픽셀 중첩이 가장 많은 각도에서의 좌표로 픽셀 좌표가 변경되는 회전 정합 단계와;a rotation matching step of changing the pixel coordinates to the coordinates at the angle where the pixel overlap of the image area is the largest by incrementing or decrementing the rotation position of the pixels constituting the comparison image with respect to the reference image and overlapping the pixels;

기준인영에 대하여 비교인영을 이루는 픽셀의 좌표가 가로 방향으로 1픽셀씩 증가되거나 감소되면서 픽셀이 중첩되어 인영영역의 픽셀 중첩이 가장 많은 픽셀 좌표가 비교인영의 변경된 가로 좌표로 되고,As the coordinates of the pixels forming the comparative image with respect to the reference image are increased or decreased by 1 pixel in the horizontal direction, the pixels are overlapped.

기준인영에 대하여 비교인영을 이루는 픽셀의 좌표가 세로 방향으로 1픽셀씩 증가되거나 감소되면서 픽셀이 중첩되어 인영영역의 개수 중첩이 가장 많은 픽셀 좌표가 비교인영의 변경된 세로 좌표로 되는 좌표 정합 단계;로 이루어지는 것을 특징으로 한다.A coordinate matching step in which the coordinates of the pixels forming the comparison image with respect to the reference image are increased or decreased by 1 pixel in the vertical direction, and the pixels are overlapped so that the coordinates of the pixel with the largest overlap in the number of impression areas become the changed vertical coordinates of the comparison image; characterized by being made.

상기에서, 준비인영 대비연산 단계에서는 기준인영에 대한 각 준비인영의 에러율(ε)이 연산되며, 각 준비인영의 날인영역 면적을 n(B)로 하고 기준인영의 날인영역에서 벗어난 부분의 각 준비인영의 날인영역 면적을 n(Bout)으로 할 때, 상기 에러율(ε)은 수학식

(％)을 통해 연산되는 것을 특징으로 한다.In the above, in the preparation stamp comparison operation step, the error rate (ε) of each preparation stamp for the reference stamp is calculated, and the area of the imprinting area of each preparation imprint is n(B), and each preparation of the part deviating from the imprinting area of the base imprint is calculated. When the area of the imprinting area is n (Bout), the error rate (ε) is expressed by the equation

It is characterized in that it is calculated through (%).

상기에서, 준비인영 대비연산 단계에서는 기준인영에 대한 각 준비인영의 에러율이 연산되며,In the above, in the preparation stage comparison calculation step, the error rate of each preparation impression with respect to the reference impression is calculated,

상기 기준인영의 날인영역 면적을 n(A)로, 준비인영의 날인영역 면적을 n(B)로, 기준인영의 날인영역에서 벗어난 부분의 준비인영의 날인영역 면적을 n(Bout)으로 할 때, 수학식

을 통해 기준인영에 대한 각 준비인영의 충진율(PR)이 연산되고;When the area of the imprinting area of the reference stamp is n(A), the area of the imprinting area of the preparation imprint is n(B), and the area of the imprinting area of the preparation imprint of the part deviating from the imprinting area of the standard imprint is n(Bout) , the formula

The filling rate (PR) of each preparation for the reference stamp is calculated through ;

상기 에러율은 수학식

을 통해 연산되고, 상기 에러율은 에러율에 충진율을 반영하여 수학식

을 통해 보정되는 것을 특징으로 한다.The error rate is

is calculated through , and the error rate is calculated by reflecting the filling rate in the error rate.

It is characterized in that it is corrected through.

상기에서, 상기 비교인영 연산 단계와 비교인영 대비연산 단계 사이에는 비교인영 정합 단계가 더 구비되며; 상기 비교인영 정합 단계는 기준인영에 대하여 비교인영을 이루는 픽셀의 좌표가 가로 방향으로 1픽셀씩 증가되거나 감소되면서 픽셀이 중첩되어 인영영역의 픽셀 중첩이 가장 많은 픽셀 좌표가 비교인영의 변경된 가로 좌표로 되고 기준인영에 대하여 변경된 가로 좌표를 가지는 비교인영을 이루는 픽셀의 좌표가 세로 방향으로 1픽셀씩 증가되거나 감소되면서 픽셀이 중첩되어 인영영역의 개수 중첩이 가장 많은 픽셀 좌표가 비교인영의 변경된 세로 좌표로 되는 좌표 정합 단계와, 기준인영과 가로 세로 좌표가 정합된 비교인영의 중심점이 도출되는 중심점 도출 단계와, 기준인영에 대하여 가로 세로 좌표가 정합된 비교인영을 이루는 픽셀의 회전 위치가 증분 또는 감분되면서 픽셀이 중첩되어 인영영역의 픽셀 중첩이 가장 많은 각도에서의 좌표가 가로 세로 좌표가 정합된 비교인영의 픽셀 좌표가 되는 회전 정합 단계로 이루어지며;In the above, a comparison-impression matching step is further provided between the comparison-impression calculation step and the comparison-impression comparison calculation step; In the comparison image matching step, the coordinates of pixels constituting the comparative impression with respect to the reference image are increased or decreased by 1 pixel in the horizontal direction, and the pixels are overlapped, so that the pixel coordinates with the largest overlap of pixels in the image area are changed to the changed horizontal coordinates of the comparison image. The coordinates of the pixels forming the comparative impression having the horizontal coordinates changed with respect to the reference image are increased or decreased by 1 pixel in the vertical direction, and the pixels are overlapped. The coordinate matching step, the center point derivation step of deriving the center point of the comparison image in which the reference image and the horizontal and vertical coordinates are matched, and the rotation position of pixels forming the comparison image in which the horizontal and vertical coordinates are matched with respect to the reference image are incremented or decremented. a rotation matching step in which the coordinates at the angle where pixels are overlapped and the pixel overlapping area of the image area is greatest becomes the pixel coordinates of the comparison image in which the horizontal and vertical coordinates are matched;

상기 비교인영 대비연산 단계에서는 기준인영에 대한 비교인영의 에러율(ε)이 연산되며, 비교인영의 날인영역 면적을 n(B)로 하고 기준인영의 날인영역에서 벗어난 부분의 비교인영의 날인영역 면적을 n(Bout)으로 할 때, 상기 에러율(ε)은 수학식

(％)을 통해 연산되며;In the comparative stamp comparison operation step, the error rate (ε) of the comparative stamp with respect to the reference stamp is calculated. When n(Bout), the error rate ε is

Calculated via (%);

상기 표시부에는 기준인영에 대한 준비인영들의 에러율의 도수 분포와 비교인영의 에러율이 디스플레이 되는 것을 특징으로 한다.The display unit is characterized in that the frequency distribution of the error rate of the preparation impressions with respect to the reference impression and the error rate of the comparative impression are displayed.

기준인영에 대하여 변경된 가로 좌표를 가지는 비교인영을 이루는 픽셀의 좌표가 세로 방향으로 1픽셀씩 증가되거나 감소되면서 픽셀이 중첩되어 인영영역의 개수 중첩이 가장 많은 픽셀 좌표가 비교인영의 변경된 세로 좌표로 되는 좌표 정합 단계;로 이루어지며,The coordinates of the pixels forming the comparative image having the changed abscissa with respect to the reference image are increased or decreased by 1 pixel in the vertical direction, and the pixels are overlapped. Coordinate matching step; consists of,

Calculated via (%);

상기에서, 비교인영 연산 단계와 비교인영 대비연산 단계 사이에는 비교인영 정합 단계가 더 구비되며; 상기 비교인영 정합 단계는 기준인영에 대하여 비교인영을 이루는 픽셀의 좌표가 가로 방향으로 1픽셀씩 증가되거나 감소되면서 픽셀이 중첩되어 인영영역의 픽셀 중첩이 가장 많은 픽셀 좌표가 비교인영의 변경된 가로 좌표로 되고 기준인영에 대하여 변경된 가로 좌표를 가지는 비교인영을 이루는 픽셀의 좌표가 세로 방향으로 1픽셀씩 증가되거나 감소되면서 픽셀이 중첩되어 인영영역의 개수 중첩이 가장 많은 픽셀 좌표가 비교인영의 변경된 세로 좌표로 되는 좌표 정합 단계와, 기준인영과 가로 세로 좌표가 정합된 비교인영의 중심점이 도출되는 중심점 도출 단계와, 기준인영에 대하여 가로 세로 좌표가 정합된 비교인영을 이루는 픽셀의 회전 위치가 증분 또는 감분되면서 픽셀이 중첩되어 인영영역의 픽셀 중첩이 가장 많은 각도에서의 좌표가 가로 세로 좌표가 정합된 비교인영의 픽셀 좌표가 되는 회전 정합 단계로 이루어지며;In the above, a comparison-impression matching step is further provided between the comparison-impression calculation step and the comparison-impression comparison operation step; In the comparison image matching step, the coordinates of pixels constituting the comparative impression with respect to the reference image are increased or decreased by 1 pixel in the horizontal direction, and the pixels are overlapped, so that the pixel coordinates with the largest overlap of pixels in the image area are changed to the changed horizontal coordinates of the comparison image. The coordinates of the pixels forming the comparative impression having the horizontal coordinates changed with respect to the reference image are increased or decreased by 1 pixel in the vertical direction, and the pixels are overlapped. The coordinate matching step, the center point derivation step of deriving the center point of the comparison image in which the reference image and the horizontal and vertical coordinates are matched, and the rotation position of pixels forming the comparison image in which the horizontal and vertical coordinates are matched with respect to the reference image are incremented or decremented. a rotation matching step in which the coordinates at the angle where pixels are overlapped and the pixel overlapping area of the image area is greatest becomes the pixel coordinates of the comparison image in which the horizontal and vertical coordinates are matched;

Calculated via (%);

상기 비교인영 대비연산 단계에서는 기준인영에 대한 비교인영의 에러율이 연산되며, 상기 기준인영의 날인영역 면적을 n(A)로, 비교인영의 날인영역 면적을 n(B)로, 기준인영의 날인영역에서 벗어난 부분의 비교인영의 날인영역 면적을 n(Bout)으로 할 때, 수학식

을 통해 기준인영에 대한 비교인영의 충진율(PR)이 연산되고;In the comparison operation step for the comparison stamp, the error rate of the comparison stamp with respect to the reference stamp is calculated, the area of the imprinting area of the reference imprint is n(A), the area of the imprinting area of the comparison imprint is n(B), and the imprint of the reference imprint is When the area of the imprinting area of the comparative imprint of the part deviating from the area is n(Bout), the formula

The filling rate (PR) of the comparative impression with respect to the reference impression is calculated through ;

상기 에러율은 수학식

을 통해 보정되며;The error rate is

is calibrated through;

기준인영과 비교인영의 중심점이 도출되는 중심점 도출 단계와;a center point deriving step in which the center points of the reference impression and the comparative impression are derived;

기준인영에 대하여 비교인영을 이루는 픽셀의 회전 위치가 증분 또는 감분되면서 픽셀이 중첩되어 인영영역의 픽셀 중첩이 가장 많은 각도에서의 좌표로 픽셀 좌표가 변경되는 회전 정합 단계;로 이루어지며,A rotation matching step in which the pixel coordinates are changed to the coordinates at the angle at which the pixel overlaps in the image area are the most because the pixels are overlapped while the rotation position of the pixels constituting the comparison image is incremented or decremented with respect to the reference image;

상기 기준인영의 날인영역 면적을 n(A)로, 비교인영의 날인영역 면적을 n(B)로, 기준인영의 날인영역에서 벗어난 부분의 비교인영의 날인영역 면적을 n(Bout)으로 할 때, 수학식

을 통해 기준인영에 대한 비교인영의 충진율(PR)이 연산되고;When the area of the imprinting area of the reference imprint is n(A), the area of the imprinting area of the comparative imprint is n(B), and the area of the imprinting area of the comparative imprint deviating from the imprinting area of the reference imprint is n(Bout) , the formula

상기 에러율은 수학식

을 통해 보정되며;The error rate is

is calibrated through;

본 발명에 따르는 위조 인영 비교 방법에 의하면 촬영된 준비인영과 비교인영의 왜곡이 간단하고 정밀하게 보정되며, 원본인장으로 날인된 준비인영에 대비하여 비교인영의 진위 여부를 객관적이며 보다 정확하게 판단할 수 있는 자료가 제공될 수 있다.According to the method for comparing counterfeit imprints according to the present invention, the distortion of the taken ready imprint and the comparative imprint is corrected simply and precisely, and the authenticity of the comparative imprint can be objectively and more accurately determined compared to the ready imprint imprinted with the original seal. data may be provided.

도 1은 본 발명에 따르는 위조 인영 비교 방법이 실행되는 순서도이며,
도 2는 준비인영 연산 단계를 도시한 순서도이며,
도 3은 비교인영 연산 단계를 도시한 순서도이며,
도 4는 본 발명에 따르는 위조 인영 비교 방법이 실행되는 촬영기기에 의하여 촬영된 인영 이미지의 예이며,
도 5는 도 4에서 교정점을 검출된 인영 이미지의 예이며,
도 6은 본 발명에 따르는 위조 인영 비교 방법이 실행되는 촬영기기에 구비되는 투명한 교정판의 사진이며,
도 7은 촬영된 준비인영의 사진이며,
도 8은 준비인영의 에러 확률분포상에 도시된 비교인영 에러율을 예시적으로 도시한 것이다.
도 9는 본 발명 위조 인영 비교 방법이 실행되는 시스템의 예를 도시한 구성도이며,
도 10 및 도 11은 준비인영 연산 단계와 비교인영 연산 단계를 설명하기 위하여 도시한 인영 이미지 예시도이며,
도 12는 도 10의 "B"부분을 확대 도시한 예시도이며,
도 13은 제1 마스크의 예이며,
도 14는 제2 마스크의 예이다.1 is a flowchart in which a method for comparing counterfeit imprints according to the present invention is executed;
2 is a flow chart showing the preparation step of the calculation,
3 is a flow chart showing the steps of the comparison imprint operation;
4 is an example of an imprint image taken by a photographing device in which a method for comparing fake imprints according to the present invention is executed;
5 is an example of an image in which the correction point is detected in FIG. 4;
6 is a photograph of a transparent calibration plate provided in a photographing device in which a counterfeit imprint comparison method according to the present invention is executed;
7 is a photograph of ready-in-young taken,
FIG. 8 exemplarily shows the comparative error rate shown on the error probability distribution of the preparation test.
9 is a block diagram showing an example of a system in which the present invention forgery comparison method is executed;
10 and 11 are exemplary impression images shown to explain the preparation impression operation step and the comparative impression operation step,
12 is an enlarged view of part "B" of FIG. 10,
13 is an example of a first mask,
14 is an example of a second mask.

이하에서 도면을 참조하여 본 발명에 따르는 위조 인영 비교 방법에 대하여 상세하게 설명한다.Hereinafter, a method for comparing counterfeit imprints according to the present invention will be described in detail with reference to the drawings.

이하의 설명에서 원본 인장으로 날인한 인영을 촬영한 이미지를 '준비인영'으로, 서류에 날인되어 인영의 진위를 판단받기 위한 인영을 촬영한 이미지를 '비교인영'으로, 복수의 준비인영의 평균 픽셀값을 가지는 인영 이미지를 '기준인영'으로 하여 설명한다.In the description below, the image of the seal stamped with the original seal is referred to as 'Preparation', the image of the seal stamped on the document to determine the authenticity of the seal is referred to as 'Comparative seal', and the average of multiple seals An imprint image having a pixel value will be described as a 'reference imprint'.

본 발명에 따르는 위조 인영 비교 방법이 실행되는 위조 인영 비교 시스템은 연산본체(100)와, 상기 연산본체(100)의 제어부(110)에 연결된 촬영기기(200)로 이루어진다. 상기 촬영기기(200)는 유선 또는 인터넷 등을 통한 통신망을 통하여 연산본체(110)의 제어부(110)에 연결될 수 있다.A counterfeit imprint comparison system in which the counterfeit imprint comparison method according to the present invention is executed includes a calculation body 100 and a photographing device 200 connected to the control unit 110 of the calculation body 100 . The photographing device 200 may be connected to the control unit 110 of the operation body 110 through a communication network through a wire or the Internet.

상기 연산본체(100)는 제어부(110)와, 상기 제어부(110)에 연결되며 위조 인영 비교 프로그램이 저장된 저장부(140)와, 상기 제어부(110)에 연결되어 인영 비교 결과가 표시되는 표시부(120)와, 상기 제어부(110)에 연결되어 사용자의 명령 입력 수단이 되는 입력부(130)를 구비한다. 상기 연산본체(100)의 예로 PC와 스마트폰과 같은 모바일 기기를 들 수 있다. 상기 저장부(140)는 스마트폰과 PC에 구비되는 저장 메모리일 수도 있고, 외부 저장수단일 수도 있다. 상기 저장부(140)에는 원본인장으로 날인되어 측정기기(200)에 의하여 촬영된 복수의 준비인영이 저장된다(ST-110, 준비인영 준비 단계). 도 7은 원본인장으로 날인되고 촬영기기로 촬영되어 저장된 준비인영들의 사진이다. 도 7의 준비인영들은 서로 다른 인주를 사용하여 날인한 것을 촬영하여 마련된 것이다.The operation body 100 includes a control unit 110, a storage unit 140 connected to the control unit 110 and storing a counterfeit imprint comparison program, and a display unit connected to the control unit 110 to display the imprint comparison result ( 120) and an input unit 130 connected to the control unit 110 and serving as a user's command input means. Examples of the operation body 100 may include a PC and a mobile device such as a smart phone. The storage unit 140 may be a storage memory provided in a smart phone and a PC, or may be an external storage means. The storage unit 140 stores a plurality of ready imprints which are sealed with the original seal and photographed by the measuring device 200 (ST-110, prep imprint preparation step). 7 is a photograph of ready-made seals sealed with the original seal and photographed and stored with a photographing device. The preparation stamps of FIG. 7 are prepared by photographing the seals using different seals.

상기 저장부(140)에는 서류 등에 날인되어 진위를 판단받기 위하여 촬영된 비교인영이 저장된다(ST-115, 비교인영 준비 단계).In the storage unit 140, a comparison stamp, which is stamped on documents, etc., and photographed to determine the authenticity, is stored (ST-115, comparison stamp preparation step).

상기 촬영기기(300)는 백색광, 자외선광, 적외선광을 필터(303)를 구비하여 출력할 수 있으며 각 파장의 광원 별로 IR Cut, UV Cut 2종의 필터를 사용하며 USB 인터페이스 통신 방식을 사용하여 연산본체인 PC나 모바일 기기로 촬영된 영상이 전송되어 저장부(140)에 저장된다. 도 9에서 도면부호 301은 촬영기기(300)에 구비되는 온/오프 스위치를 도시한 것이고, 305는 날인된 인영을 촬영부를 도시한 것이다. 촬영부(305)에서 날인된 인영이 촬영되어 촬영된 이미지는 저장부(140)에 저장된다. The photographing device 300 can output white light, ultraviolet light, and infrared light with a filter 303, and uses two types of filters, IR Cut and UV Cut for each light source of each wavelength, and uses a USB interface communication method. An image captured by a PC or mobile device, which is a computing body, is transmitted and stored in the storage unit 140 . In FIG. 9 , reference numeral 301 denotes an on/off switch provided in the photographing device 300 , and reference numeral 305 denotes a photographing unit with a stamped impression. The image stamped by the photographing unit 305 is photographed and the photographed image is stored in the storage unit 140 .

본 발명에 따르는 위조 인영 비교 시스템의 촬영기기(300)의 경통 끝 부분에는 도 6에 도시한 바와 같이 투명판에 교정점이 일정한 간격으로 인쇄되어 있는 교정판이 구비된다. 상기 교정판이 구비되므로 촬영한 인영의 이미지에는 도 4에 예시적으로 도시한 바와 같이 인영의 외곽에 교정점이 함께 촬영된다. 교정점의 간격과 배열은 미리 알고 있기 때문에 촬영된 이미지에서 교정점의 배열과 간격이 계측되고 촬영시 발생한 왜곡의 정도와 방향이 확인되어 보정될 수 있다.At the end of the barrel of the imaging device 300 of the counterfeit imprint comparison system according to the present invention, as shown in FIG. 6 , a proofing plate in which calibration points are printed on a transparent plate at regular intervals is provided. Since the correction plate is provided, a correction point is also photographed at the outer edge of the image as illustrated in FIG. 4 . Since the spacing and arrangement of the calibration points are known in advance, the arrangement and spacing of the calibration points are measured in the photographed image, and the degree and direction of distortion occurring during photographing can be checked and corrected.

상기 교정판에 인쇄된 복수의 교정점은 원형 형태로 형성된다. 복수의 교정점은 가로 방향으로 일정 거리 이격되는 열을 형성하며, 열은 복수로 형성되고 세로 방향으로 이웃하는 열 사이의 간격은 가로 방향으로의 교정점의 이격거리와 같게 위치한다. 교정점의 크기는 예를 들어 지름 0.5㎜나 1㎜일 수 있으며, 교정점 사이의 간격은 3㎜나 5㎜ 등으로 형성될 수 있다. 교정점의 색상은 한정되지 않으나 노랑색 등으로 형성될 수 있다. 교정판의 중심부에는 교정점이 인쇄되지 않은 비인쇄영역이 형성된다. 상기 비인쇄영역은 8각형이나 원형으로 형성될 수 있다. A plurality of calibration points printed on the calibration plate are formed in a circular shape. The plurality of calibration points form a column spaced apart by a predetermined distance in the horizontal direction, the columns are formed in plurality, and the spacing between adjacent columns in the vertical direction is the same as the spacing distance of the calibration points in the horizontal direction. The size of the calibration points may be, for example, a diameter of 0.5 mm or 1 mm, and an interval between the calibration points may be formed as 3 mm or 5 mm. The color of the correction point is not limited, but may be formed of yellow or the like. A non-printed area in which a calibration point is not printed is formed in the center of the proofing plate. The non-printing area may be formed in an octagonal or circular shape.

교정판의 설치 방향에 따라 가로 방향과 세로 방향이 변할 수 있으나, 교정판의 일측 방향을 가로 방향이라고 하고, 가로 방향과 수직한 방향을 세로 방향이라고 할 때, 세로 방향으로 이웃하는 열에 위치한 교정점은 가로 방향으로 서로 어긋난 위치에 인쇄되며, 인접한 열에 위치한 교정점은 가로 방향으로 이격된 교정점의 가로 방향 위치가 중간이 되도록 형성된다.The horizontal direction and the vertical direction may change depending on the installation direction of the straightening plate, but when one side of the straightening plate is called a horizontal direction and a direction perpendicular to the horizontal direction is called a vertical direction, a correction point located in a column adjacent to the vertical direction is printed at positions shifted from each other in the horizontal direction, and the correction points located in adjacent columns are formed so that the horizontal positions of the horizontally spaced correction points are in the middle.

사용자가 입력부를 통하여 위조 인영 비교 프로그램을 실행시키면, 준비된 복수의 준비인영들과 비교인영에 대하여, 준비인영 연산되고(ST-120, 준비인영 연산 단계), 준비인영들이 정합되고(ST-130, 준비인영 정합 단계), 기준인영이 생성되며(ST-140, 기준인영 생성 단계), 기준인영에 대하여 준비인영들이 대비 연산되고(ST-150, 준비인영 대비연산 단계), 비교인영이 연산되며(ST-125, 비교인영 연산 단계), 기준인영에 대하여 비교인영이 정합되고, 기준인영에 대하여 비교인영이 대비 연산되며(ST-155, 비교인영 대비연산 단계), 기준인영에 대한 준비인영들의 에러 확률분포 데이터가 도출되고 비교인영의 대비 연산 결과가 준비인영들의 에러 확률분포와 함께 표시부에 디스플레이된다(ST-160, 결과 표시 단계).When the user executes the counterfeit impression comparison program through the input unit, the prepared impressions are calculated for the plurality of prepared prints and the comparison prints (ST-120, ready impression calculation step), and the ready prints are matched (ST-130, Preparation for registration matching step), a reference impression is generated (ST-140, reference impression generation step), preparations for the reference impression are compared against the reference impression (ST-150, preparation for comparison operation step), and a comparison impression is calculated ( ST-125, comparative impression calculation step), the comparison impression is matched with the reference impression, the comparison impression is compared with the reference impression (ST-155, the comparative impression comparison operation step), and the error of the preparations for the reference impression The probability distribution data is derived, and the comparison operation result of the comparison image is displayed on the display unit together with the error probability distribution of the prepared images (ST-160, result display step).

상기 준비인영 연산 단계(ST-120)는 준비 인영이 이진화되는 단계(ST-1201, 이진화 단계)와, 준비인영의 엣지를 이루는 픽셀의 정보가 추출되는 단계(ST-1202, 엣지정보 추출 단계)와, 준비인영의 엣지를 이루는 픽셀들이 연결된 엣지라인이 추출되는 단계(ST-1203, 엣지라인정보 추출 단계)와, 준비인영의 인영 이미지에서 날인영역이 추출된는 단계(ST-1204, 날인영역 추출)로 이루어진다.The readiness calculation step (ST-120) includes a step of binarizing a ready imprint (ST-1201, binarization step) and a step of extracting pixel information constituting the edge of the ready imprint (ST-1202, edge information extraction step) A step of extracting an edge line connected to pixels constituting the edge of the preparation mark (ST-1203, extracting edge line information), and a step of extracting a stamp area from the imprint image of the preparation mark (ST-1204, extracting the stamp area) ) is made of

상기 비교인영 연산 단계(ST-125)는 비교 인영이 이진화되는 단계(ST-1251, 이진화 단계)와, 비교인영의 엣지를 이루는 픽셀의 정보가 추출되는 단계(ST-1252, 엣지정보 추출 단계)와, 비교인영의 엣지를 이루는 픽셀들이 연결된 엣지라인이 추출되는 단계(ST-1253, 엣지라인정보 추출 단계)와, 비교인영의 인영 이미지에서 날인영역이 추출된는 단계(ST-1254, 날인영역 추출)로 이루어진다.The comparison image operation step (ST-125) includes a step of binarizing the comparison image (ST-1251, binarization step), and a step of extracting pixel information constituting the edge of the comparison image (ST-1252, edge information extraction step) and, a step of extracting an edge line connected to pixels constituting the edge of the comparison stamp (ST-1253, edge line information extraction step), and a step of extracting an imprinted area from the imprinted image of the comparison stamp (ST-1254, stamping area extraction) ) is made of

준비인영 연산 단계(ST-120)와 비교인영 연산 단계(ST-125) 전에, 촬영된 인영에서 도 4에서와 같이 교정점 영역이 검출된 후 도 5에 도시된 바와 같이 표준 교정점 위치와 촬영된 이미지에서의 교정점 위치의 오차가 연산된다. 검출한 교정점의 위치와 오차가 연산된 후, 준비인영과 비교인영의 픽셀 위치가 교정점으로부터 연산된 위치 오차에 의하여 Image warping 기법이 이용되어 보정될 수 있다.Before the preparatory impression calculation step (ST-120) and the comparative impression calculation step (ST-125), the calibration point area is detected as in FIG. The error of the position of the calibration point in the image is calculated. After the positions and errors of the detected correction points are calculated, the pixel positions of the preparation and comparison images may be corrected by using the image warping technique by the position errors calculated from the correction points.

준비인영 연산 단계(ST-120)와 비교인영 연산 단계(ST-125)에 대하여 설명하다.The preparation impression calculation step ST-120 and the comparison impression calculation step ST-125 will be described.

준비인영을 이루는 각 픽셀의 색상성분(R, G, B) 값의 합이 예를 들어 384보다 작은 경우에는 R=0, G=0, B=0으로 변환되어 검정색의 색상값을 가진다. 준비인영의 날인영역의 픽셀은 이진화되어 검정색의 색상값을 가진다. 준비인영이 날인되어 있는 문서의 글씨 부분들도 마찬가지로 이진화되어 글씨 부분은 검정색의 색상값을 가진다. 바탕 부분의 픽셀의 색상 정보는 R=255, G=255, B=255로 변환되어 흰색의 색상값을 가진다(ST-1201).If the sum of the color component (R, G, B) values of each pixel constituting the preparation is smaller than, for example, 384, it is converted to R=0, G=0, B=0 and has a black color value. Pixels in the area to be stamped with preparation stamps are binarized and have a black color value. The text part of the document on which the preparation seal is stamped is also binarized, and the text part has a black color value. The color information of the pixel in the background is converted to R=255, G=255, and B=255 to have a white color value (ST-1201).

비교인영도 위와 같이 바탕 부분은 흰색의 색상값(R=255, G=255, B=255)을 가지며 날인영역과 글씨 부분은 검정색의 색상값(R=0, G=0, B=0)을 가지도록 이진화 된다(ST-1251).As shown above, the background part has a white color value (R=255, G=255, B=255), and the stamp area and text part have a black color value (R=0, G=0, B=0). It is binarized to have (ST-1251).

도 10은 이진화된 4각 인영 이미지를 예시적으로 도시한 것이며, 도 11은 원형 인영 이미지를 예시적으로 도시한 것이다. 도 12는 도 10의 엣지인 "B"부분을 예시적으로 확대 도시한 것이다. 도 12에 도시된 바와 같이, 촬영되어 저장된 준비인영 및 비교인영을 이루는 픽셀들에 대하여 3×3픽셀마다 제1 마스크 및 제2 마스크와 연산되고 엣지정보가 추출되어 저장부에 저장된다. 도 12에 도시된 바와 같이 이진화된 날인영역의 픽셀은 검정색 색상, 바탕부분은 흰색 색상의 색상값을 가진다. 도 13 및 도 14는 도 12에 도시된 픽셀과 함께 연산될 제1 및 제2 마스크를 도시한 것이다. 문서의 이미지의 인영부분 및 문서 내용인 글씨 부분이 포함된 이미지에서도 본 발명에 따르는 경우 준비인영 연산 단계(ST-120)와 비교인영 연산 단계(ST-125)에서 인영부분의 날인영역이 추출될 수 있다.FIG. 10 exemplarily shows a binarized quadrangular imprint image, and FIG. 11 exemplarily shows a circular imprint image. 12 is an exemplary enlarged view of a portion “B” which is an edge of FIG. 10 . As shown in FIG. 12 , the first mask and the second mask are computed for every 3×3 pixel for the pixels forming the pre-imprint and the comparative imprint that are photographed and stored, and edge information is extracted and stored in the storage unit. As shown in FIG. 12 , the pixels of the binarized stamping area have a black color, and the background part has a white color value. 13 and 14 show first and second masks to be computed together with the pixel shown in FIG. 12 . Even in an image including the imprinted part of the image of the document and the textual part of the document content, in accordance with the present invention, the imprinted area of the imprinted part is extracted in the preparation imprint calculation step ST-120 and the comparative imprint calculation step ST-125. can

엣지정보 추출 단계(ST-1202, ST-1252)에 대하여 설명한다.The edge information extraction steps ST-1202 and ST-1252 will be described.

본 발명에 의하는 경우 준비인영 및 비교인영과 글씨 인쇄 부분을 가지는 이미지에 대해서도 준비인영 및 비교인영의 날인영역이 추출되나, 설명의 편의를 위해서 준비인영 및 비교인영 부분에 대해서 설명한다.In the case of the present invention, the areas of the preparation and comparison stamps are extracted even for images having the preparation and comparison stamps and the printed part, but for convenience of explanation, the preparation and comparison stamps will be described.

도 12에 도시된 바와 같이 이진화된 준비인영 및 비교인영의 픽셀은 흰색 색상값(R=255, G=255, B=255)이나 검정색 색상값(R=0, G=0, B=0)을 가진다. As shown in FIG. 12, the pixels of the binarized ready image and comparison image have white color values (R=255, G=255, B=255) or black color values (R=0, G=0, B=0). have

도 12의 3×3 각 픽셀은 R, G, B 값은 P11(0, 0, 0), P12(0, 0, 0), P12(255, 255, 255), P21(0, 0, 0), P22(0, 0, 0), P23(255, 255, 255), P31(0, 0, 0), P32(0, 0, 0), P33(255, 255, 255)이다. 도 13에 도시한 제1 마스크는 3×3행렬로 [(-1, 0, 1), (-2, 0, 2), (-1, 0, 1)] 값을 가진다. 도 14에 도시한 바와 같이 제2 마스크도 3×3행렬로 [(1, 2, 1), (0, 0, 0), (-1, 2, 1)] 값을 가진다. 도 12의 각 픽셀 색상값과 제1 마스크의 각 픽셀의 값을 곱하면 3×3 픽셀 제1 값(G1)이 연산되며, 도 12의 각 픽셀 색상값과 제2 마스크의 각 픽셀의 값을 곱하면 3×3 픽셀 제2 값(G1)이 연산된다.The 3×3 pixels in Fig. 12 have R, G, and B values P11(0, 0, 0), P12(0, 0, 0), P12(255, 255, 255), P21(0, 0, 0) ), P22(0, 0, 0), P23(255, 255, 255), P31(0, 0, 0), P32(0, 0, 0), P33(255, 255, 255). The first mask shown in FIG. 13 is a 3×3 matrix and has [(-1, 0, 1), (-2, 0, 2), (-1, 0, 1)] values. 14 , the second mask also has values of [(1, 2, 1), (0, 0, 0), (-1, 2, 1)] in a 3×3 matrix. When each pixel color value of FIG. 12 is multiplied by the value of each pixel of the first mask, a 3×3 pixel first value G1 is calculated, and the color value of each pixel of FIG. 12 and the value of each pixel of the second mask are calculated When multiplied, a 3×3 pixel second value G1 is calculated.

연산에 있어서, 픽셀 색상값을 더한 값과 연산되어도 되며, 픽셀의 색상값 중, R, G, B 값 중 어느 한 값이 선택되어 연산되어도 가능하다. 본 발명에서는 설명을 쉽게 하기 위해서 R, G, B 값 중 어느 한 값이 선택되어 연산되는 것을 예로 들어 설명한다. 연산된 픽셀 제1 값(G1)은 [(0, 0, 255), (0, 0, 510), (0, 0, 255)]이 된다. 연산된 픽셀 제2 값(G2)은 [(0, 0, 255), (0, 0, 0), (0, 0, -255)]이 된다. 상기 픽셀 제1 값(G1)의 각 픽셀값의 절대값과 픽셀 제2 값(G2)의 각 픽셀값의 절대값의 더하기 연산이 된다. 절대값의 더하기 연산된 값인 픽셀 제3값(G3)은 [(0, 0, 510), (0, 0, 510), (0, 0, 510)]이 된다. 이와 같은 연산에 의해 픽셀 제3값(G3)에서 510값을 가지는 픽셀에 인접한 픽셀들(P12, P22, P32)이 엣지 픽셀로 추출되어 그 위치 정보가 저장부에 저장된다(ST-1202, ST-1252, 엣지정보 추출 단계). 위에서 픽셀 제1 값(G1)의 각 픽셀값의 절대값과 픽셀 제2 값(G2)의 각 픽셀값의 절대값 연산은 제곱의 제곱근으로 하는 것도 가능하며, 절대값과 같은 효과가 나오는 연산을 포함하는 의미이다.In the calculation, the operation may be performed with a value obtained by adding pixel color values, or any one of R, G, and B values may be selected and calculated among the pixel color values. In the present invention, for ease of explanation, an example in which any one of R, G, and B values is selected and calculated will be described. The calculated pixel first value G1 becomes [(0, 0, 255), (0, 0, 510), (0, 0, 255)]. The calculated second pixel value G2 becomes [(0, 0, 255), (0, 0, 0), (0, 0, -255)]. It is an addition operation of the absolute value of each pixel value of the first pixel value G1 and the absolute value of each pixel value of the pixel second value G2. The pixel third value G3, which is an absolute value addition operation value, becomes [(0, 0, 510), (0, 0, 510), (0, 0, 510)]. By this operation, the pixels P12, P22, and P32 adjacent to the pixel having a value of 510 in the pixel third value G3 are extracted as edge pixels and the location information is stored in the storage unit (ST-1202, ST). -1252, edge information extraction step). Above, the absolute value of each pixel value of the pixel first value G1 and the absolute value of each pixel value of the pixel second value G2 can be calculated with the square root of the square. meaning to include

상기와 같은 방법으로 준비인영 및 비교인영의 엣지정보가 추출되어 저장부에 저장된다(ST-1202, ST-1252, 엣지정보 추출 단계).In the same way as described above, edge information of preparation impressions and comparative impressions is extracted and stored in the storage unit (ST-1202, ST-1252, edge information extraction step).

엣지라인정보 추출 단계(ST-1203, ST-1253)에 대하여 설명한다.The edge line information extraction steps ST-1203 and ST-1253 will be described.

도 10에서 도면부호 210-1, 210-2, 210-3, 210-4 및 201-5는 엣지정보 추출 단계(ST-1202, ST-1252)에서 추출되어 저장부에 저장된 엣지 픽셀들을 예시적으로 도시한 것이다. 임의의 좌표 축(x, y)에 대하여 엣지 픽셀(210-2)을 지나는 직선은 복수개(거의 무한대)이다. 좌표축은 픽셀 좌표의 좌표값 x=0, y=0인 절대 좌표로 하는 것도 가능하다. 도 10에는 엣지 픽셀(210-2)을 지나는 직선을 예시적으로 도면부호 12, 12-1 및 12a로 도시하였다. 좌표 축(x, y)에 대한 엣지 픽셀(210-2)의 좌표값을 (x1, y1)이라고 하면, 좌표 축(x, y)의 원점에서 엣지 픽셀(210-2)을 지나는 직선(12a)에 수직한 직선의 길이를 r1, x축에 대한 각을 θ1이라고 할 때, 직선의 방정식은 아래 식과 같다.In FIG. 10, reference numerals 210-1, 210-2, 210-3, 210-4, and 201-5 exemplify edge pixels extracted in the edge information extraction steps ST-1202 and ST-1252 and stored in the storage unit. is shown as A plurality of straight lines passing through the edge pixel 210 - 2 with respect to an arbitrary coordinate axis (x, y) are plural (almost infinite). It is also possible to set the coordinate axis as absolute coordinates where the coordinate values of the pixel coordinates are x=0 and y=0. In FIG. 10 , straight lines passing through the edge pixel 210 - 2 are illustrated by reference numerals 12 , 12 - 1 , and 12a by way of example. If the coordinate value of the edge pixel 210-2 with respect to the coordinate axis (x, y) is (x1, y1), the straight line 12a passing through the edge pixel 210-2 from the origin of the coordinate axis (x, y) ) is the length of the straight line perpendicular to r1, and the angle to the x-axis is θ1, the equation of the straight line is as follows.

위 직선의 방정식에서 m은 직선(12a)의 기울기를 나타낸다. 기울기가 다른 엣지 픽셀(210-2)을 지나는 무수히 많은 직선이 만들어질 수 있다. 엣지 픽셀(210-2)을 지나는 직선(12a)은 해당 엣지 픽셀(210-2) 뿐 아니고 직선(12a)의 연장선에 있는 엣지 픽셀들도 지나게 된다. 엣지 픽셀의 좌표가 위 수학식 1의 x와 y값에 대입되어 방정식을 만족하면 직선(12a)이 지나는 엣지 픽셀로 카운팅되어 직선(12a)이 지나는 엣지 픽셀의 수가 저장부에 저장되고, 저장부에 미리 저장된 설정값과 대비되어 설정값보다 크면 그 회전 각도에서의 직선이 엣지라인으로 되어 정보가 저장부에 저장된다(ST-1203, 엣지라인정보 추출 단계). 위와 같은 방법으로 모든 엣지 픽셀에 대하여 연산되어 설정값보다 큰 엣지 픽셀들을 지나는 직선이 엣지라인으로 추출되어 저장부에 저장된다. 상기에서 설정값은 인영이미지의 크기(픽셀수) 등에 따라 설정되어 저장된다.In the equation of the straight line above, m represents the slope of the straight line 12a. Innumerable straight lines passing through the edge pixels 210 - 2 having different inclinations may be formed. The straight line 12a passing through the edge pixel 210 - 2 passes not only the corresponding edge pixel 210 - 2 but also the edge pixels extending from the straight line 12a. When the coordinates of the edge pixels are substituted into the x and y values of Equation 1 above and the equation is satisfied, it is counted as an edge pixel through which the straight line 12a passes, and the number of edge pixels through which the straight line 12a passes is stored in the storage unit, and the storage unit If it contrasts with the preset value stored in the , and is larger than the set value, the straight line at the rotation angle becomes an edge line and the information is stored in the storage unit (ST-1203, edge line information extraction step). In the same way as above, a straight line passing through edge pixels larger than the set value calculated for all edge pixels is extracted as an edge line and stored in the storage unit. In the above, the setting value is set and stored according to the size (number of pixels) of the imprinted image.

도 10에서 엣지 픽셀(210-1)을 지나는 직선은 도면부호 11 및 11-1로 예시하여 도시한 바와 같이 무수히 많을 수 있으나, 설정값 이상의 엣지픽셀들을 지나는 엣지라인은 도면부호 11로 도시한 직선이 된다. 마찬가지로 엣지 픽셀(210-2)을 지나는 엣지라인은 도면부호 12로 도시한 직선이 되고, 엣지 픽셀(210-3)을 지나는 엣지라인은 도면부호 13으로 도시한 직선이 되고, 엣지 픽셀(210-4)을 지나는 엣지라인은 도면부호 14로 도시한 직선이 된다. 도 10에 도시된 바와 같이 인영의 글씨 부분의 엣지 픽셀(210-5)에 대해서도 마찬가지로 연산된다. 상기와 같은 방법으로 준비인영과 비교인영의 각 엣지픽셀들에 대하여 설정값보다 큰 엣지 픽셀들을 지나는 복수의 엣지라인정보가 추출되어 저장부에 저장된다(ST-1203, ST-1253, 엣지라인정보 추출 단계).In FIG. 10 , a straight line passing through the edge pixel 210-1 may be innumerable as illustrated by reference numerals 11 and 11-1. becomes this Similarly, an edge line passing through the edge pixel 210-2 becomes a straight line indicated by reference numeral 12, an edge line passing through the edge pixel 210-3 becomes a straight line indicated by reference numeral 13, and an edge pixel 210- The edge line passing through 4) becomes a straight line indicated by reference numeral 14. As shown in FIG. 10 , the same operation is performed on the edge pixels 210 - 5 of the letter part of the character. A plurality of edge line information passing through edge pixels larger than the set value is extracted for each edge pixel of preparation and comparison printing in the same manner as above and stored in the storage unit (ST-1203, ST-1253, edge line information). extraction step).

교점 추출에 대하여 설명한다.Intersection extraction will be described.

복수의 엣지라인에 대한 정보가 추출되면, 이들의 교점이 연산되어 추출되고 교점의 좌표는 저장부에 저장된다. 교점의 연산은 엣지라인의 방정식 연산에 의하여 도출된다. 저장부에 저장된 엣지라인들 중 임의의 엣지라인 2개가 선택되고, 좌표값이 차례로 입력되어 선택된 2개의 엣지라인 방정식에 대입 연산되어 교점이 추출될 수 있다. 엣지라인들 중 2개의 엣지라인에 선택될 때, 엣지라인들 중 1개의 엣지라인과, 이 엣지라인에 수직한 엣지라인이 선택되고 교점이 연산되어 추출된다. 모든 엣지라인에 대하여 위와 같은 방법으로 2개의 엣지라인이 선택되고 교점이 연산되어 추출되고 교점 정보는 저장부에 저장된다. 저장부에는 복수의 교점의 정보가 저장된다.When information on a plurality of edge lines is extracted, their intersections are calculated and extracted, and the coordinates of the intersections are stored in the storage unit. The calculation of the intersection is derived by the equation calculation of the edge line. Two arbitrary edge lines among the edge lines stored in the storage are selected, and coordinate values are sequentially inputted and substituted into the two selected edge line equations to extract an intersection. When two edge lines are selected among the edge lines, one edge line of the edge lines and an edge line perpendicular to the edge line are selected, and the intersection is calculated and extracted. For all edge lines, two edge lines are selected in the same way as above, the intersection is calculated and extracted, and the intersection information is stored in the storage unit. The storage unit stores information on a plurality of intersection points.

A1은 엣지픽셀(210-1, 210-2)을 지나는 엣지라인의 교점을 도시한 것이고, A2는 엣지픽셀(210-2, 210-3)을 지나는 엣지라인의 교점을 도시한 것이다. 상기와 같은 방법으로 복수의 엣지라인들에 대하여 엣지라인의 교점이 추출되어 저장부에 저장된다.A1 indicates the intersection of the edge lines passing through the edge pixels 210 - 1 and 210 - 2 , and A2 indicates the intersection of the edge lines passing through the edge pixels 210 - 2 and 210 - 3 . The intersection of the edge lines is extracted with respect to the plurality of edge lines in the same manner as described above and stored in the storage unit.

사각형 인영의 날인영역 분리 연산에 대하여 설명한다.The calculation of separation of the stamp area of a rectangular seal will be described.

저장부에 저장된 교점들 중 4개의 교점이 선택되고, 4개의 교점을 연결한 4각형의 면적이 연산되고, 면적이 연산된 사각형 중 면적이 가장 큰 사각형을 이루는 교점이 꼭지점이 되고 이들 사각형이 인영영역이 되고, 4개의 교점 내측의 R=0, G=0, B=0인 픽셀들이 날인영역이 된다. Four intersections are selected among the intersections stored in the storage, the area of a quadrilateral connecting the four intersections is calculated, and the intersection forming a rectangle with the largest area among the calculated rectangles becomes a vertex, and these rectangles are area, and pixels with R=0, G=0, and B=0 inside the four intersections become the stamping area.

예시적으로 설명하면 먼저, 복수의 교점 중 1개의 교점이 선택되고, 선택된 1개의 교점을 제외한 교점 들 중에서 두번째 교점이 선택되고, 선택된 첫번째와 두번째 교점을 제외한 교점 중에서 세번째 교점이 선택된다. 세번째 교점은 두번째 교점을 꼭지점으로 하여 첫번째 교점과 직교하는 위치에 있는 모든 교점들이 선택된다. 세번째 교점들로 선택될 교점이 없는 경우 두번째의 교점으로 다른 교점이 선택된다. 네번째 교점은 첫번째 교점을 꼭지점으로 두번째 교점과 직교하는 위치에 있는 모든 교점들이 선택된다. 네번째 교점들이 선택되지 않으면 두번째 교점으로 다른 교점이 선택된다. To explain by way of example, first, one intersection is selected from among the plurality of intersections, a second intersection is selected from among intersections other than the selected one, and a third intersection is selected from among intersections other than the selected first and second intersections. As for the third intersection, all intersections in a position orthogonal to the first intersection are selected using the second intersection as a vertex. If there is no intersection to be selected as the third intersection, another intersection is selected as the second intersection. The fourth intersection is the vertex of the first intersection, and all intersections in a position orthogonal to the second intersection are selected. If the fourth intersection is not selected, another intersection is selected as the second intersection.

세번째 교점들과 네번째 교점들이 연결된 복수의 선들 중에서 첫번째 교점과 두번째 교점을 연결한 직선과 평행인 직선들이 선택되고, 이들 중 첫번째 교점이나 두번째 교점에서 가장 거리가 먼 직선의 양단의 세번째와 네번째 교점이 사각형을 이루는 교점 정보로 저장부에 저장되고, 선택된 4개의 교점에 의하여 형성되는 사각형의 면적이 연산되어 저장부에 저장된다. Among the plurality of lines where the third and fourth intersections are connected, straight lines parallel to the straight line connecting the first and second intersections are selected, and the third and fourth intersections of both ends of the straight line furthest from the first or second intersections are selected. It is stored in the storage unit as the intersection information forming the rectangle, and the area of the rectangle formed by the selected four intersections is calculated and stored in the storage unit.

위와 같은 방법으로 복수의 사각형을 이루는 교점 정보가 저장부에 저장되고, 사각형 중 면적이 가장 큰 사각형을 이루는 4개의 교점이 인영부분의 4개의 꼭지점으로 좌표가 저장부에 저장된다. 그리고 4개의 꼭지점이 이루는 사각형 내측의 픽셀 중 색상값 R=0, G=0, B=0인 픽셀이 날인 영역으로 되어 그 픽셀의 정보(좌표 정보)가 저장부에 저장된다. 위와 같은 방법으로 준비인영과 비교인영에 대한 인영영역이 추출되고, 인영영역에서 날인영역이 추출되어 저장부에 저장된다(ST-1204, ST-1254, 날인영역정보 추출 단계). In the above manner, information on intersection points constituting a plurality of rectangles is stored in the storage unit, and the coordinates of four intersections constituting a rectangle having the largest area among the rectangles are stored as four vertices of the imprinted portion in the storage unit. In addition, pixels with color values R=0, G=0, and B=0 among the pixels inside the quadrangle formed by the four vertices become a stamped area, and information (coordinate information) of the pixel is stored in the storage unit. In the same way as above, the imprint area for the preparation and comparative imprints is extracted, and the imprint area is extracted from the imprint area and stored in the storage unit (ST-1204, ST-1254, stamp area information extraction step).

원형 인영의 날인영역 분리 연산에 대하여 설명한다.The operation of separating the sealing area of the circular seal will be described.

인영이 도 11에 도시된 바와 같이 원형 인영인 경우, 상기 엣지라인정보 추출 단계(ST-1203, ST-1253)에서 엣지픽셀을 지나는 직선의 연산시 설정값보다 큰 엣지픽셀을 지나는 직선이 도출되지 않게 된다. 인영이 원형인 경우 복수의 엣지픽셀 중 임의의 엣지픽셀(220)이 선택되고, 나머지 엣지픽셀 중 두개의 엣지픽셀(220-1, 220-2)이 선택되며 이들 3개의 엣지픽셀(220, 220-1, 220-2)을 지나는 원이 도출되고, 도출된 원의 궤적에 위치하는 엣지픽셀의 수가 설정값 이상인 경우 도출된 원의 정보(원의 중심, 반지름 또는 지름)가 저장부에 저장된다. 위와 같은 방법으로 모든 엣지픽셀에 대하여 연산되어 복수의 원이 도출되고 도출된 원의 정보가 저장부에 저장된다. 준비인영과 비교인영에 대하여 복수의 원이 도출되고 도출된 원의 정보가 저장부에 저장된다(ST-1203, ST-1253, 엣지라인정보 추출 단계).When the image is a circular print as shown in FIG. 11, a straight line passing through an edge pixel larger than the set value is not derived when calculating a straight line passing through the edge pixel in the edge line information extraction step (ST-1203, ST-1253). won't When the image is circular, an arbitrary edge pixel 220 is selected among a plurality of edge pixels, and two edge pixels 220-1 and 220-2 are selected among the remaining edge pixels, and these three edge pixels 220 and 220 are selected. -1, 220-2) is derived, and when the number of edge pixels located on the trajectory of the derived circle is greater than or equal to the set value, information on the derived circle (center, radius, or diameter of the circle) is stored in the storage unit. . A plurality of circles are derived by calculating for all edge pixels in the same way as above, and information on the derived circles is stored in the storage unit. A plurality of circles are derived for the preparation impression and the comparison impression, and information on the derived circle is stored in the storage unit (ST-1203, ST-1253, edge line information extraction step).

저장부에 저장된 복수의 원 중에서 지름이 가장 큰 원이 인영부분의 가장자리로 선택되고, 가장 큰 원의 내측에 위치하는 R=0, G=0, B=0인 픽셀들이 날인영역으로 분리되어 그 정보가 저장부에 저장된다. 준비인영과 비교인영에 대하여 가장 큰 원의 내측에 위치하는 R=0, G=0, B=0인 픽셀들이 날인영역으로 분리되어 그 정보가 저장부에 저장된다(ST-1204, ST-1254, 날인영역정보 추출 단계). Among the plurality of circles stored in the storage, the circle with the largest diameter is selected as the edge of the imprinting part, and the pixels with R=0, G=0, and B=0 located inside the largest circle are separated into the imprinting area. The information is stored in the storage unit. The pixels with R=0, G=0, and B=0 located inside the largest circle for the preparation stamp and the comparison stamp are separated into a stamp area and the information is stored in the storage unit (ST-1204, ST-1254). , stamp area information extraction step).

준비인영들의 정합(ST-130, 준비인영 정합 단계)에 대하여 설명한다.A description will be given of the registration of the ready-to-go (ST-130, the ready-to-go matching step).

준비인영들의 날인영역 데이터들에 의하여 준비인영들이 정합된다. 준비인영들의 날인영역이 분리 되면서 날인영역을 이루는 픽셀 정보(좌표)가 저장부(130)에 저장된다.The ready imprints are matched by the imprint area data of the ready imprints. As the imprinting areas of the ready imprints are separated, pixel information (coordinates) constituting the imprinting area is stored in the storage unit 130 .

상기 준비인영 정합 단계에서 저장부(130)에 저장된 복수의 준비인영 중 1개의 준비인영(제1 준비인영)이 임의로 선택된다. 그리고 선택된 1개의 준비인영(제1 준비인영)을 제외한 준비인영들 중 하나의 준비인영(제2 준비인영)이 선택된다. In the preparation-in-young matching step, one ready-in-young (first ready-in-young) is arbitrarily selected from among a plurality of ready-in-young stored in the storage unit 130 . And, one of the prepared people (second preparations) is selected from among the selected ones except for the selected one preparations (first preparations).

제1 준비인영의 날인영역의 정보(픽셀 위치)에 대비되어 제2 준비인영의 날인영역 정보(픽셀의 위치)가 중첩되는 개수가 도출되어 저장되고, 제2 준비인영을 이루는 픽셀의 좌표가 가로 방향으로 1픽셀씩 증가되면서 중첩되는 개수가 도출되어 저장되고, 다시 1픽셀씩 감소되면서 중첩되는 개수가 도출되어 저장부(130)에 저장되며, 제1 준비인영과 제2 준비인영의 날인영역을 이루는 픽셀의 중첩되는 개수가 가장 많은 위치가 제2 준비인영을 이루는 픽셀들의 변경된 가로 좌표로 된다.The number of overlapping information (position of pixels) of the imprinting area of the second preparatory imprint is derived and stored in contrast to the information (pixel position) of the imprinting area of the first preparation imprint, and the coordinates of pixels constituting the second imprinting imprint are horizontal. The overlapping number is derived and stored as it increases by 1 pixel in the direction, and the overlapping number is derived and stored in the storage unit 130 as it decreases by 1 pixel again, and the first preparation stamp and the second preparation stamp are sealed. The position where the overlapping number of pixels forming is greatest becomes the changed abscissa coordinate of pixels constituting the second preparation print.

제1 준비인영의 날인영역의 정보(픽셀 위치)에 대비되어 제2 준비인영의 날인영역 정보(픽셀의 위치)가 중첩되는 개수가 도출되어 저장되고, 제2 준비인영을 이루는 픽셀의 좌표가 세로 방향으로 1픽셀씩 증가되면서 중첩되는 개수가 도출되어 저장되고, 다시 1픽셀씩 감소되면서 중첩되는 개수가 도출되어 저장부(130)에 저장되며, 제1 준비인영과 제2 준비인영의 날인영역을 이루는 픽셀의 중첩되는 개수가 가장 많은 위치가 제2 준비인영을 이루는 픽셀들의 변경된 세로 좌표로 된다.In contrast to the information (pixel position) of the first preparation stamp area, the number of overlapping information on the second preparation stamp area (pixel position) is derived and stored, and the coordinates of the pixels forming the second preparation stamp are vertical The overlapping number is derived and stored as it increases by 1 pixel in the direction, and the overlapping number is derived and stored in the storage unit 130 as it decreases by 1 pixel again, and the first preparation stamp and the second preparation stamp are sealed. The position where the overlapping number of pixels forming is greatest becomes the changed vertical coordinate of pixels forming the second preparation print.

상기와 같은 과정에 의하여 제1 준비인영에 대한 제2 준비인영을 이루는 픽셀들의 새로운 가로 세로 좌표로 되어 좌표 정합이 된다(준비인영 좌표 정합 단계).By the above process, the new horizontal and vertical coordinates of the pixels constituting the second preparation for the first impression are obtained, and the coordinates are matched (step of matching the coordinates of the ready impression).

좌표 정합이 완료되면, 제1 준비인영과 제2 준비인영의 중심점이 도출된다(중심점 도출 단계). 중심점 도출의 예를 설명하면, 날인영역 픽셀 좌표들의 가로축좌표와 세로축 좌표의 합이 연산되고 픽셀 개수로 나누어 연산될 수도 있고, 가로축과 세로축 픽셀 자료의 중간값이 중심점이 될 수도 있다. 제1 준비인영의 중심점 좌표로 제2 준비인영의 중심점의 좌표가 변경되고 제2 준비인영을 이루는 픽셀들의 좌표도 중심점 좌표의 변경과 같게 변경된다. 그리고 제1 준비인영과 제2 준비인영의 날인영역의 중첩된 픽셀 개수가 도출되어 저장부(130)에 저장되고, 중심점을 중심으로 제2 준비인영을 이루는 픽셀의 좌표가 회전 변위로 증분되면서 중첩되는 픽셀 개수가 도출되어 저장된다. 회전변위는 예를 들면 0.25°씩 증분될 수 있다. 상기와 같이 회전 변위로 증분되면서 제1 준비인영과 제2 준비인영의 날인영역 중첩 개수가 최대가 되는 위치가 제2 준비인영의 좌표로 되어 제1 준비인영과 제2 준비인영이 회전 정합된다(준비인영 회전 정합 단계).When the coordinate matching is completed, the center point of the first ready person and the second ready person is derived (center point derivation step). When explaining an example of derivation of the central point, the sum of the horizontal and vertical coordinates of the pixel coordinates of the imprinting area is calculated and divided by the number of pixels. The coordinates of the center point of the second ready person are changed to the coordinates of the center point of the first ready person, and the coordinates of the pixels constituting the second ready person are also changed in the same way as the change of the center point coordinates. And the number of overlapping pixels of the first and second preparation stamps of the imprinting area is derived and stored in the storage unit 130, and the coordinates of the pixels constituting the second preparation imprint around the center point are incremented by rotational displacement and overlapped. The number of pixels is derived and stored. The rotational displacement can be incremented by, for example, 0.25°. As described above, as the rotational displacement is incremented, the position where the overlapping number of the stamping areas of the first ready stamp and the second ready stamp is maximum becomes the coordinate of the second ready stamp, and the first ready stamp and the second ready stamp are rotationally matched ( preparatory rotation registration step).

상기에서 준비인영 회전 정합 단계가 먼저 실행되고 준비인영 좌표 정합 단계가 실행되는 것도 가능하다. In the above, it is also possible that the preparatory rotation matching step is performed first, and the ready drawing coordinate matching step is executed.

상기와 같은 단계에 따라 저장부(130)에 저장된 나머지 모든 준비인영들에 대해서도 제1 준비인영에 대하여 준비인영 정합이 실행된다.According to the above-described steps, the first ready-to-wear matching is performed with respect to the first ready-to-wear for all the remaining ready-made prints stored in the storage unit 130 .

기준인영 생성(ST-140, 기준인영 생성 단계)에 대하여 설명한다.The reference impression generation (ST-140, the reference impression generation step) will be described.

제1 준비인영에 대하여 나머지 모든 준비인영들이 정합되어, 정합된 위치의 픽셀좌표가 나머지 준비인영들을 이루는 날인영역의 픽셀들의 좌표로 되어 저장부(130)에 저장된다. All of the remaining ready stamps are matched with respect to the first ready imprint, and the pixel coordinates of the matched positions become the coordinates of the pixels of the imprinting area constituting the remaining ready imprints and are stored in the storage unit 130 .

제1 준비인영을 포함한 복수의 준비인영들에 대하여 각 픽셀 위치에서 픽셀의 색상값의 합이 연산되고, 연산된 값들이 준비인영의 개수로 나누어진 평균 픽셀값이 연산되고 평균 픽셀값이 그 위치에서 픽셀의 색상값이 된다. 평균 픽셀값을 가지는 인영이 기준인영으로 저장부(130)에 저장된다(ST-140, 기준인영 생성 단계). 예를 들어, 날인영역이 분리될 때 날인영역의 픽셀은 이진화되어 검정색의 색상값을 가질 수 있으며, 색상성분(R, G, B) 값의 합이 384보다 작은 경우에는 R=0, G=0, B=0로 변환되어 날인영역으로 된다.For a plurality of ready prints including the first ready prints, the sum of the color values of the pixels at each pixel position is calculated, the calculated values are divided by the number of ready prints, and the average pixel value is calculated, and the average pixel value is the position is the color value of the pixel. An image having an average pixel value is stored in the storage unit 130 as a reference image (ST-140, reference image generation step). For example, when the stamp area is separated, the pixels of the stamp area are binarized to have a black color value. It is converted to 0, B=0 and becomes the stamping area.

준비인영 대비연산 단계(ST-150)에 대하여 설명한다.The preparation preparation comparison operation step (ST-150) will be described.

기준인영이 생성되어 기준인영을 이루는 픽셀 정보가 저장부(130)에 저장되면, 기준인영에 대한 각 준비인영들의 에러율이 연산된다(ST-150, 준비인영 대비연산 단계).When the reference image is generated and pixel information constituting the reference image is stored in the storage unit 130 , the error rate of each of the preparation images with respect to the reference image is calculated (ST-150, the preparation stage comparison operation step).

상기 준비인영 대비연산 단계에서는 기준인영에 대한 각 준비인영의 에러율(ε)은 아래 수학식 1에 의하여 연산된다.In the preparation comparison operation step, the error rate ε of each preparation impression with respect to the reference impression is calculated by Equation 1 below.

위 수학식 2에서 n(B)는 준비인영의 날인영역 면적이고, n(Bout)는 기준인영의 날인영역에서 벗어난 부분의 준비인영의 날인영역 면적이다. 면적은 픽셀의 개수가 된다.In Equation 2 above, n(B) is the area of the preparation stamping area, and n(Bout) is the area of the preparation stamping area outside of the standard stamping area. The area is the number of pixels.

기준인영에 대한 각 준비인영의 에러율(ε)은 충진율에 의하여 보정되어 보정된 에러율로 하는 것도 가능하다. 기준인영에 대한 준비인영의 충진율(PR)은 아래 수학식 3에 의하여 연산된다.The error rate (ε) of each pre-imprint with respect to the reference imprint is corrected by the fill rate, and it is also possible to use the corrected error rate. The filling rate (PR) of the ready stamp with respect to the reference stamp is calculated by Equation 3 below.

위 수학식 3에서 n(B)는 준비인영의 날인영역 면적이고, n(Bout)은 기준인영의 날인영역에서 벗어난 부분의 준비인영의 날인영역 면적이고, n(A)는 기준인영의 날인영역 면적이다. In Equation 3 above, n(B) is the area of the stamping area of the preparation stamp, n(Bout) is the area of the stamping area of the preparation stamp of the part deviating from the stamping area of the standard stamp, and n(A) is the stamping area of the standard stamp is the area

충진율(PR)에 의하여 보정된 에러율(ε')은 아래 수학식 4에 의하여 연산된다.The error rate ε' corrected by the filling factor PR is calculated by Equation 4 below.

위 수학식 4에서 ε은 수학식 2에서 연산된 에러율을 나타낸다.In Equation 4, ε represents the error rate calculated in Equation 2 above.

상기와 같은 연산 과정을 거쳐 기준인영에 대하여 모든 준비인영들의 에러율(ε) 또는 충진율(PR)에 의하여 보정된 에러율(ε')이 연산되어 저장부(130)에 저장된다.Through the calculation process as described above, the error rate ε' corrected by the error rate ε or the filling factor PR of all the preparation prints with respect to the reference stamp is calculated and stored in the storage unit 130 .

비교인영에 대하여 설명한다.A comparative impression will be described.

기준인영에 대하여 비교인영을 정합한다. 기준인영에 대하여 비교인영을 정합하는 과정은 위에서 설명한 기준인영에 대하여 준비인영을 정합하는 과정과 동일하므로 중복 설명은 생략한다. 기준인영에 대하여 비교인영이 정합되면, 비교인영 대비연산 단계(ST-155)가 실행된다.The comparative impression is matched against the standard impression. Since the process of matching the comparative impression to the reference impression is the same as the process of matching the preparation impression to the reference impression described above, a redundant description will be omitted. When the comparison impression is matched with the reference impression, the comparison impression comparison operation step ST-155 is executed.

비교인영 대비연산 단계(ST-155)에서는 기준인영에 대한 정합된 비교인영의 에러율 또는 보정된 에러율이 연산되어 저장부(130)에 저장된다. 기준인영에 대한 비교인영의 에러율은 위의 수학식 1와 같이 연산되며, 이 경우 위 수학식 1에서 n(B)는 비교인영의 날인영역 면적이 되고, n(Bout)는 기준인영의 날인영역에서 벗어난 부분의 비교인영의 날인영역 면적이 된다.In the comparison operation step ST-155 , the error rate or the corrected error rate of the matched comparison image with respect to the reference image is calculated and stored in the storage unit 130 . The error rate of the comparative stamp for the reference stamp is calculated as in Equation 1 above. In Equation 1 above, n(B) is the area of the imprinting area of the comparative imprint, and n(Bout) is the imprinting area of the reference imprint. It becomes the area of the sealing area of the comparative imprint of the part deviating from .

기준인영에 대한 비교인영의 충진율은 위의 수학식 2과 같이 연산되며, 이 경우 위 수학식 2에서 n(B)는 비교인영의 날인영역 면적이 되고, n(Bout)은 기준인영의 날인영역에서 벗어난 부분의 비교인영의 날인영역 면적이 된다. 기준인영에 대한 비교인영의 보정된 에러율은 위의 수학식 3와 같이 연산되며, 이 경우 수학식 3에서 PR은 기준인영에 대한 비교인영의 충진율이 되고, ε은 기준인영에 대한 비교인영의 에러율이 된다.The filling rate of the comparative stamp for the reference stamp is calculated as in Equation 2 above. In Equation 2 above, n(B) is the area of the imprinting area of the comparative imprint, and n(Bout) is the imprinting area of the reference imprint. It becomes the area of the sealing area of the comparative imprint of the part deviating from . The corrected error rate of the comparative impression with respect to the reference impression is calculated as in Equation 3 above. In this case, in Equation 3, PR is the filling rate of the comparative impression with respect to the reference impression, and ε is the error rate of the comparative impression with respect to the reference impression. becomes this

기준인영에 대한 복수의 준비인영들의 에러율(또는 보정된 에러율)이 연산되고, 복수의 준비인영들의 에러율들이 연산되며, 도 8에 도시된 바와 같이 표시부에는 복수의 준비인영들의 에러율들 분포가 표시되고, 준비인영들의 에러율들 분포 그래프 상에 기준인영에 대한 비교인영의 에러율이 표시된다(ST-160, 결과 표시 단계). 따라서 비교인영의 진위에 대한 정밀하고 객관적이 자료가 획득되어, 법원 등에 즉각적인 진위 여부에 대한 판정이 가능하게 된다. The error rate (or corrected error rate) of a plurality of ready-made prints with respect to the reference impression is calculated, the error rates of the plurality of ready-made prints are calculated, and as shown in FIG. 8, the display unit displays the distribution of error rates of the plurality of ready-made prints , the error rate of the comparative test with respect to the reference test is displayed on the distribution graph of the error rates of the preparation tests (ST-160, result display step). Therefore, precise and objective data on the authenticity of comparative impressions are obtained, enabling immediate judgment of authenticity in courts and the like.

ST-110: 준비인영 준비 단계 ST-120: 준비인영 연산 단계
ST-130: 준비인영 정합 단계 ST-140: 기준인영 생성 단계
ST-150: 준비인영 대비연산 단계 ST-115: 비교인영 준비 단계
ST-125: 비교인영 연산 단계 ST-155: 비교인영 대비연산 단계
ST-160: 결과 표시 단계ST-110: Preparation phase for preparation ST-120: Preparation phase for preparation identification
ST-130: Preparatory impression registration step ST-140: Reference impression generation step
ST-150: Preparation stage for comparison calculation ST-115: Preparation stage for comparative evaluation
ST-125: Comparative impression operation step ST-155: Comparative impression comparison operation step
ST-160: Result display step

Claims

A control unit, a storage unit connected to the control unit and storing a counterfeit imprint comparison program, a display unit connected to the control unit, and an input unit connected to the control unit to be a user's command input means; executed in a counterfeit imprint comparison system comprising a photographing device that is a means for photographing an object;
A preparation stamp calculation step in which the stamp area is separated from a plurality of preparation stamps stored in the storage unit after the original seal is sealed, a preparation stamp registration step in which a plurality of preparation stamps are matched, and a reference stamp is generated from the matched plurality of preparation stamps a preparation impression characteristic value calculation step comprising a reference impression generation step and a preparation impression comparison operation step in which an error rate of each preparation impression with respect to the reference impression is calculated; Comprising a comparison stamp characteristic value calculation step comprising: a comparison stamp calculation step in which a sealing area is separated from the comparison stamp stored in the storage; The error rate of comparison with respect to the distribution of error rates of preparation is displayed on the display unit;
The readiness calculation step includes a step of being binarized (ST-1201, binarization step), a step of extracting pixel information constituting the edge of the ready impression (ST-1202, edge information extraction step), and forming the edge of the ready impression. a step of extracting an edge line to which pixels are connected (ST-1203, edge line information extraction step), and a step of extracting an imprinted area from the imprinted image of the ready imprint (ST-1204, imprinted area extraction); The comparison image operation step (ST-125) includes a step of binarizing the comparison image (ST-1251, binarization step), and a step of extracting pixel information constituting the edge of the comparison image (ST-1252, edge information extraction step) A step of extracting an edge line connected to pixels constituting the edge of the comparison stamp (ST-1253, edge line information extraction step), and a step of extracting a stamp area from the imprint image of the comparison stamp (ST-1254, extraction of the stamp area) );
The step of extracting the edge information of the ready impression and the comparative impression is a 3×3 pixel first value by multiplying the color value of the 3×3 pixel of the pixels constituting the ready impression and the comparative impression by each value of the 3×3 first mask. (G1) is calculated, and a 3x3 pixel second value (G2) is calculated by multiplying the color value of the 3x3 pixel by each value of the 3x3 second mask; The coordinates of pixels forming the edge are determined by the third pixel value G3 calculated by adding the absolute value of each pixel value of the pixel first value G1 and the absolute value of each pixel value of the pixel second value G2. A method for comparing counterfeit imprints, characterized in that derived.

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The method of claim 1, wherein in the extracting of edge line information of the preparation and comparison images, the edge line information is extracted and stored in the storage unit by a straight line or a circle passing through any one edge pixel and passing through the remaining edge pixels of a number greater than or equal to a set value. Counterfeit imprint comparison method, characterized in that it becomes.

According to claim 1,
In the step of matching the ready person, one ready person (first ready person) is arbitrarily selected from among the plurality of ready person, and another one ready person who is not selected from among the plurality of ready person is selected (second ready person), and one With respect to the pixels making up the ready impression (the first ready impression), the coordinates of the pixel making the other ready impression (the second ready impression) are increased or decreased by 1 pixel in the horizontal direction, and the pixels overlap, so that the pixel overlap of the impression area is reduced. The most pixel coordinates become the changed abscissa coordinates of one other ready-in-young (second ready-in-young),
As the coordinates of the pixels constituting the other ready impression (second preparation impression) are increased or decreased by 1 pixel in the vertical direction for one preparation impression (first preparation impression), the pixels overlap, so that the overlap of the number of impression areas is the most a coordinate matching step in which many pixel coordinates are changed to the changed ordinates of one other ready-made image (second ready-made image);
A central point deriving step in which the center point of one ready-in-young (first ready-in-young) and the horizontal and vertical coordinates are matched to the ready-in-young (second ready-in-young) is derived;
The angle with the largest overlap of pixels in the imprint area because the pixels overlap as the rotation position of the pixels forming the ready imprint (the second preparatory imprint) whose horizontal and vertical coordinates are matched for one ready imprint (the first ready imprint) is incremented or decremented. A rotation matching step in which the coordinates in the horizontal and vertical coordinates become the pixel coordinates of the ready-in-young (the second ready-in-young) in which the horizontal and vertical coordinates are matched; consists of,
The method for comparing counterfeit impressions, characterized in that the coordinate matching step, the center point derivation step, and the rotation matching step are executed for the remaining ready impressions with respect to one randomly selected ready impression (first ready impression).

According to claim 1,
In the step of matching the ready person, one ready person (first ready person) is arbitrarily selected from among the plurality of ready person, and another one ready person who is not selected among the plurality of ready person is selected (second ready person),
a center point deriving step in which the center points of one ready person young (first ready person young) and another one ready person young (second ready person young) are derived;
The coordinates at the angle at which the pixel overlap of the impression area is the most due to overlapping pixels as the rotation position of the pixels constituting the other ready impression (second preparation impression) is incremented or decremented with respect to one preparation impression (first preparation impression) a rotation matching step in which pixel coordinates are changed to ;
Pixels in the impression area are overlapped as the coordinates of the pixels constituting one ready impression (first ready impression) are increased or decreased by 1 pixel in the horizontal direction with respect to the pixel constituting the other ready impression (second ready impression). The pixel coordinates with the most overlap become the changed abscissa coordinates of the other one (second preparation),
As the coordinates of the pixels constituting the other ready impression (second preparation impression) are increased or decreased by 1 pixel in the vertical direction for one preparation impression (first preparation impression), the pixels overlap, so that the overlap of the number of impression areas is the most It consists of a coordinate matching step in which many pixel coordinates become the changed vertical coordinates of another one ready-in (second ready-in-young);
A method for comparing false impressions, characterized in that the center point derivation step, the rotation matching step, and the coordinate matching step are executed for the remaining ready impressions with respect to one randomly selected ready impression (first ready impression).

7. The comparison of claim 6, wherein in the generating of the reference image, an average value of pixels at each position of a plurality of matched ready images is calculated, and a reference image whose average value becomes the pixel value at the position is generated. Way.

8. The comparison of claim 7, wherein, in the generating of the reference image, an average value of pixels at each position of a plurality of matched ready images is calculated, and a reference image whose average value becomes the pixel value at the position is generated. Way.

9. The method according to claim 8, further comprising: a comparison-and-fog matching step between the comparison-and-impression operation step and the comparison-and-forth comparison operation step;
In the comparison image matching step, the coordinates of pixels constituting the comparative impression with respect to the reference image are increased or decreased by 1 pixel in the horizontal direction, and the pixels are overlapped, so that the pixel coordinates with the largest overlap of pixels in the image area are changed to the changed horizontal coordinates of the comparison image. become,
The coordinates of the pixels forming the comparative image having the changed abscissa with respect to the reference image are increased or decreased by 1 pixel in the vertical direction, and the pixels are overlapped. coordinate matching step;
a center point deriving step of deriving a center point of a comparison mark in which the horizontal and vertical coordinates are matched with the reference mark;
The pixel of the comparison image in which the abscissa and ordinate coordinates are matched is the coordinate at the angle where the pixel overlap of the image area is greatest because the pixels are overlapped as the rotation position of the pixel forming the comparison image in which the horizontal and vertical coordinates are matched with the reference image is incremented or decremented. A counterfeit imprint comparison method comprising: a rotation matching step that becomes a coordinate.

10. The method of claim 9, further comprising: a comparison-and-fog matching step between the comparison-and-importance operation step and the comparison-for-image comparison operation step;
In the comparison image matching step, the coordinates of pixels constituting the comparative impression with respect to the reference image are increased or decreased by 1 pixel in the horizontal direction, and the pixels are overlapped, so that the pixel coordinates with the largest overlap of pixels in the image area are changed to the changed horizontal coordinates of the comparison image. become,
a coordinate matching step in which the coordinates of the pixels constituting the comparison image with respect to the reference image are increased or decreased by 1 pixel in the vertical direction, and the pixels are overlapped, so that the coordinates of the pixel with the largest overlap in the number of impression areas become the changed vertical coordinates of the comparison image;
a center point deriving step of deriving a center point of a comparison mark in which the horizontal and vertical coordinates are matched with the reference mark;
The pixel of the comparison image in which the abscissa and ordinate coordinates are matched is the coordinate at the angle where the pixel overlap of the image area is greatest because the pixels are overlapped as the rotation position of the pixel forming the comparison image in which the horizontal and vertical coordinates are matched with the reference image is incremented or decremented. A counterfeit imprint comparison method comprising: a rotation matching step that becomes a coordinate.

9. The method of claim 8,
a comparison-impression matching step is further provided between the comparison-impression calculation step and the comparison-impression comparison calculation step;
The comparison impression matching step includes a center point deriving step in which the center points of the reference impression and the comparative impression are derived;
a rotation matching step of changing the pixel coordinates to the coordinates at the angle where the pixel overlap of the image area is the largest by incrementing or decrementing the rotation position of the pixels constituting the comparison image with respect to the reference image and overlapping the pixels;
As the coordinates of the pixels forming the comparative image with respect to the reference image are increased or decreased by 1 pixel in the horizontal direction, the pixels are overlapped.
A coordinate matching step in which the coordinates of the pixels forming the comparison image with respect to the reference image are increased or decreased by 1 pixel in the vertical direction, and the pixels are overlapped so that the coordinates of the pixel with the largest overlap in the number of impression areas become the changed vertical coordinates of the comparison image; Counterfeit imprint comparison method, characterized in that made.

10. The method of claim 9,
a comparison-impression matching step is further provided between the comparison-impression calculation step and the comparison-impression comparison calculation step;
The comparison impression matching step includes a center point deriving step in which the center points of the reference impression and the comparative impression are derived;
a rotation matching step of changing the pixel coordinates to the coordinates at the angle where the pixel overlap of the image area is the largest by incrementing or decrementing the rotation position of the pixels constituting the comparison image with respect to the reference image and overlapping the pixels;
As the coordinates of the pixels forming the comparative image with respect to the reference image are increased or decreased by 1 pixel in the horizontal direction, the pixels are overlapped.
A coordinate matching step in which the coordinates of the pixels forming the comparison image with respect to the reference image are increased or decreased by 1 pixel in the vertical direction, and the pixels are overlapped so that the coordinates of the pixel with the largest overlap in the number of impression areas become the changed vertical coordinates of the comparison image; Counterfeit imprint comparison method, characterized in that made.

The method according to claim 6, wherein in the preparation stamp comparison operation step, the error rate (ε) of each preparation stamp with respect to the reference stamp is calculated, and the area of the imprinting area of each preparation imprint is n(B), When the area of the sealing area of each preparation stamp of the part is n (Bout), the error rate (ε) is expressed by the equation

A method for comparing counterfeit imprints, characterized in that calculated through (%).

8. The method of claim 7, wherein in the preparation stamp comparison operation step, the error rate (ε) of each preparation stamp with respect to the reference stamp is calculated, and the area of the imprinting area of each preparation imprint is n(B), and the When the area of the sealing area of each preparation stamp of the part is n (Bout), the error rate (ε) is expressed by the equation

7. The method of claim 6, wherein in the preparation step comparison calculation step, an error rate of each preparation impression with respect to the reference impression is calculated,
When the area of the imprinting area of the reference stamp is n(A), the area of the imprinting area of the preparation imprint is n(B), and the area of the imprinting area of the preparation imprint of the part deviating from the imprinting area of the standard imprint is n(Bout) , the formula

The filling rate (PR) of each preparation for the reference stamp is calculated through ;
The error rate is

Counterfeit imprint comparison method, characterized in that corrected through.

The method according to claim 7, wherein in the preparation step comparison calculation step, an error rate of each preparation impression with respect to the reference impression is calculated,
When the area of the imprinting area of the reference stamp is n(A), the area of the imprinting area of the preparation imprint is n(B), and the area of the imprinting area of the preparation imprint of the part deviating from the imprinting area of the standard imprint is n(Bout) , the formula

Counterfeit imprint comparison method, characterized in that corrected through.

15. The method according to claim 14, further comprising: a comparison-and-fog matching step between the comparison-and-importance operation step and the comparison-and-importance comparison operation step; In the comparison image matching step, the coordinates of pixels constituting the comparative impression with respect to the reference image are increased or decreased by 1 pixel in the horizontal direction, and the pixels are overlapped, so that the pixel coordinates with the largest overlap of pixels in the image area are changed to the changed horizontal coordinates of the comparison image. The coordinates of the pixels forming the comparative impression having the horizontal coordinates changed with respect to the reference image are increased or decreased by 1 pixel in the vertical direction, and the pixels are overlapped. The coordinate matching step, the center point derivation step of deriving the center point of the comparison image in which the reference image and the horizontal and vertical coordinates are matched, and the rotation position of pixels forming the comparison image in which the horizontal and vertical coordinates are matched with respect to the reference image are incremented or decremented. a rotation matching step in which the coordinates at the angle where pixels are overlapped and the pixel overlapping area of the image area is greatest becomes the pixel coordinates of the comparison image in which the horizontal and vertical coordinates are matched;
In the comparative stamp comparison operation step, the error rate (ε) of the comparative stamp with respect to the reference stamp is calculated. When n(Bout), the error rate ε is

Calculated via (%);
A method for comparing false impressions, characterized in that the display unit displays a frequency distribution of the error rates of the prepared prints with respect to the reference impressions and the error rates of the comparative impressions.

15. The method according to claim 14, further comprising: a comparison-and-fog matching step between the comparison-and-importance operation step and the comparison-and-importance comparison operation step;
The comparison impression matching step includes a center point deriving step in which the center points of the reference impression and the comparative impression are derived;
a rotation matching step of changing the pixel coordinates to the coordinates at the angle where the pixel overlap of the image area is the largest by incrementing or decrementing the rotation position of the pixels constituting the comparison image with respect to the reference image and overlapping the pixels;
As the coordinates of the pixels forming the comparative image with respect to the reference image are increased or decreased by 1 pixel in the horizontal direction, the pixels are overlapped.
The coordinates of the pixels forming the comparative image having the changed abscissa with respect to the reference image are increased or decreased by 1 pixel in the vertical direction, and the pixels are overlapped. Coordinate matching step; consists of,
In the comparative stamp comparison operation step, the error rate (ε) of the comparative stamp with respect to the reference stamp is calculated. When n(Bout), the error rate ε is

16. The method according to claim 15, further comprising: a comparison-and-import matching step between the comparison-and-impression operation step and the comparison-for-image comparison operation step; In the comparison image matching step, the coordinates of pixels constituting the comparative impression with respect to the reference image are increased or decreased by 1 pixel in the horizontal direction, and the pixels are overlapped, so that the pixel coordinates with the largest overlap of pixels in the image area are changed to the changed horizontal coordinates of the comparison image. The coordinates of the pixels forming the comparative impression having the horizontal coordinates changed with respect to the reference image are increased or decreased by 1 pixel in the vertical direction, and the pixels are overlapped. The coordinate matching step, the center point derivation step of deriving the center point of the comparison image in which the reference image and the horizontal and vertical coordinates are matched, and the rotation position of pixels forming the comparison image in which the horizontal and vertical coordinates are matched with respect to the reference image are incremented or decremented. a rotation matching step in which the coordinates at the angle where pixels are overlapped and the pixel overlapping area of the image area is greatest becomes the pixel coordinates of the comparison image in which the horizontal and vertical coordinates are matched;
In the comparative stamp comparison operation step, the error rate (ε) of the comparative stamp with respect to the reference stamp is calculated. When n(Bout), the error rate ε is

16. The method according to claim 15, further comprising: a comparison-and-import matching step between the comparison-and-impression operation step and the comparison-for-image comparison operation step;
The comparison impression matching step includes a center point deriving step in which the center points of the reference impression and the comparative impression are derived;
a rotation matching step of changing the pixel coordinates to the coordinates at the angle where the pixel overlap of the image area is the largest by incrementing or decrementing the rotation position of the pixels constituting the comparison image with respect to the reference image and overlapping the pixels;
As the coordinates of the pixels forming the comparative image with respect to the reference image are increased or decreased by 1 pixel in the horizontal direction, the pixels are overlapped.
The coordinates of the pixels forming the comparative image having the changed abscissa with respect to the reference image are increased or decreased by 1 pixel in the vertical direction, and the pixels are overlapped. Coordinate matching step; consists of,
In the comparative stamp comparison operation step, the error rate (ε) of the comparative stamp with respect to the reference stamp is calculated. When n(Bout), the error rate ε is

17. The method of claim 16, further comprising: a comparison-and-fog matching step between the comparison-and-import operation step and the comparison-and-forth comparison operation step;
The comparison impression matching step includes a center point deriving step in which the center points of the reference impression and the comparative impression are derived;
a rotation matching step of changing the pixel coordinates to the coordinates at the angle where the pixel overlap of the image area is the largest by incrementing or decrementing the rotation position of the pixels constituting the comparison image with respect to the reference image and overlapping the pixels;
As the coordinates of the pixels forming the comparative image with respect to the reference image are increased or decreased by 1 pixel in the horizontal direction, the pixels are overlapped.
The coordinates of the pixels forming the comparative image having the changed abscissa with respect to the reference image are increased or decreased by 1 pixel in the vertical direction, and the pixels are overlapped. Coordinate matching step; consists of,
In the comparative impression comparison operation step, an error rate of the comparison impression with respect to the reference impression is calculated,
When the area of the imprinting area of the reference imprint is n(A), the area of the imprinting area of the comparative imprint is n(B), and the area of the imprinting area of the comparative imprint deviating from the imprinting area of the reference imprint is n(Bout) , the formula

The filling rate (PR) of the comparative impression with respect to the reference impression is calculated through ;
The error rate is

is calibrated through;
A method for comparing false impressions, characterized in that the display unit displays a frequency distribution of the error rates of the prepared prints with respect to the reference impressions and the error rates of the comparative impressions.

17. The method of claim 16, further comprising: a comparison-and-fog matching step between the comparison-and-import operation step and the comparison-and-forth comparison operation step;
In the comparison image matching step, the coordinates of pixels constituting the comparative impression with respect to the reference image are increased or decreased by 1 pixel in the horizontal direction, and the pixels are overlapped, so that the pixel coordinates with the largest overlap of pixels in the image area are changed to the changed horizontal coordinates of the comparison image. become,
The coordinates of the pixels forming the comparative image having the changed abscissa with respect to the reference image are increased or decreased by 1 pixel in the vertical direction, and the pixels are overlapped. coordinate matching step;
a center point deriving step in which the center points of the reference impression and the comparative impression are derived;
A rotation matching step in which the pixel coordinates are changed to the coordinates at the angle at which the pixel overlaps in the image area are the most because the pixels are overlapped while the rotation position of the pixels constituting the comparison image is incremented or decremented with respect to the reference image;
When the area of the imprinting area of the reference imprint is n(A), the area of the imprinting area of the comparative imprint is n(B), and the area of the imprinting area of the comparative imprint deviating from the imprinting area of the reference imprint is n(Bout) , the formula

18. The method according to claim 17, further comprising: a comparison-and-import matching step between the comparison-and-import operation step and the comparison-for-image comparison operation step;
The comparison impression matching step includes a center point deriving step in which the center points of the reference impression and the comparative impression are derived;
a rotation matching step of changing the pixel coordinates to the coordinates at the angle where the pixel overlap of the image area is the largest by incrementing or decrementing the rotation position of the pixels constituting the comparison image with respect to the reference image and overlapping the pixels;
As the coordinates of the pixels forming the comparative image with respect to the reference image are increased or decreased by 1 pixel in the horizontal direction, the pixels are overlapped.
The coordinates of the pixels forming the comparative image having the changed abscissa with respect to the reference image are increased or decreased by 1 pixel in the vertical direction, and the pixels are overlapped. Coordinate matching step; consists of,
In the comparative impression comparison operation step, an error rate of the comparison impression with respect to the reference impression is calculated,
When the area of the imprinting area of the reference imprint is n(A), the area of the imprinting area of the comparative imprint is n(B), and the area of the imprinting area of the comparative imprint deviating from the imprinting area of the reference imprint is n(Bout) , the formula

18. The method according to claim 17, further comprising: a comparison-and-import matching step between the comparison-and-import operation step and the comparison-for-image comparison operation step;
The comparative imprint matching step is
As the coordinates of the pixels forming the comparative image with respect to the reference image are increased or decreased by 1 pixel in the horizontal direction, the pixels are overlapped.
The coordinates of the pixels forming the comparative image having the changed abscissa with respect to the reference image are increased or decreased by 1 pixel in the vertical direction, and the pixels are overlapped. coordinate matching step;
a center point deriving step in which the center points of the reference impression and the comparative impression are derived;
A rotation matching step in which the pixel coordinates are changed to the coordinates at the angle at which the pixel overlaps in the image area are the most because the pixels are overlapped while the rotation position of the pixels constituting the comparison image is incremented or decremented with respect to the reference image;
When the area of the imprinting area of the reference imprint is n(A), the area of the imprinting area of the comparative imprint is n(B), and the area of the imprinting area of the comparative imprint deviating from the imprinting area of the reference imprint is n(Bout) , the formula