JPH01306983A - Method and device for discriminating forging of picture - Google Patents

Method and device for discriminating forging of picture

Info

Publication number
JPH01306983A
JPH01306983A JP63137309A JP13730988A JPH01306983A JP H01306983 A JPH01306983 A JP H01306983A JP 63137309 A JP63137309 A JP 63137309A JP 13730988 A JP13730988 A JP 13730988A JP H01306983 A JPH01306983 A JP H01306983A
Authority
JP
Japan
Prior art keywords
image
picture
photograph
images
paintings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP63137309A
Other languages
Japanese (ja)
Inventor
Hiroyuki Nakamura
博幸 中村
Yasuo Koyama
小山 泰男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OOKURASHIYOU INSATSU KYOKUCHO
Original Assignee
OOKURASHIYOU INSATSU KYOKUCHO
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by OOKURASHIYOU INSATSU KYOKUCHO filed Critical OOKURASHIYOU INSATSU KYOKUCHO
Priority to JP63137309A priority Critical patent/JPH01306983A/en
Publication of JPH01306983A publication Critical patent/JPH01306983A/en
Pending legal-status Critical Current

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  • Credit Cards Or The Like (AREA)
  • Collating Specific Patterns (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)

Abstract

PURPOSE:To discriminate a nonregistered photograph from registered ones when a photograph-registered person submits his nonregistered photograph which is taken from a different direction from that of his registered photograph or the photograph of another person by detecting a desired position of a picture as color information or density information and recording a specific frequency component of detected signals. CONSTITUTION:Since the propriety of a photograph is decided based on the information obtained by detecting the feature of the picture, the position from which the feature is obtained can be selected freely. The frequency component of a picture is different by positions even from the same picture. In other words forging or alteration of a picture is very difficult unless the position of the information for calculating the feature of the picture is clearly known even when the feature calculating method is understood. Even if, for example, both the picture and the feature recorded on a card, etc., on which the picture is stuck are simultaneously forged or altered, the picture cannot be discriminated as the picture of a registered person. Thus forging or alteration can be prevented and, as a result, the safety can be improved.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、身分証明書、パスポート、外国人登録証、自
動車運転免許証など、所持者が登録した本人であること
を確認する必要のあるカード、冊子及び帳票類等(以下
カード等と称する)における写真、絵画などの画像(以
下画像と称する)の改ざん判定方法及びその判定装置に
関する。
[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to identification documents, passports, alien registration cards, automobile driver's licenses, etc. that require confirmation that the holder is the registered person. The present invention relates to a method and device for determining falsification of images such as photographs and paintings (hereinafter referred to as images) on cards, booklets, forms, etc. (hereinafter referred to as cards, etc.).

〔従来の技術〕[Conventional technology]

カード等の登録者の写真と、所持者とを目視により比較
し、所持者が登録した本人であるか否かを確認している
The photo of the registrant on the card, etc., and the holder are visually compared to confirm whether the holder is the registered person.

従来、カード等の写真の張り替え、改ざん等を防止する
ため、写真への割印、写真の上にマーク入りのプラスチ
ックフィルムを張り付けた後割印したり、同一印画紙に
写真と文字とを形成しカード化するなどの対策を施して
いる。また、肖像を直接プラスチックカードに彫刻する
方法やプラスチックフィルムに感光膜を塗布しこれに写
真的に画像を形成させ、このプラスチックフィルムをカ
ードのオーバーシートとして使用する方法なども提案さ
れている。
Conventionally, in order to prevent photos from being replaced or tampered with on cards, etc., stamps were placed on the photo, plastic film with a mark was pasted on top of the photo and the stamp was added, or a photo and text were formed on the same photographic paper. We are taking measures such as In addition, methods have been proposed in which a portrait is directly engraved onto a plastic card, and a method in which a photoresist film is coated on a plastic film, an image is photographically formed thereon, and the plastic film is used as an oversheet for the card.

しかし、写真への割印、写真の上にマーク入りのプラス
チックフィルムを張り付けた後割印するなどでは、写真
を張り替えられる可能性がある。
However, there is a possibility that the photo can be replaced by placing a stamp on the photo, or by pasting a plastic film with a mark on it and then applying the stamp.

また肖像を直接プラスチックカードに彫刻する方法はカ
ラー化が困難であり、同一印画紙に写真と文字とを形成
しカード化する方法及び画像を形成させたプラスチック
フィルムをカードのオーバーシートとして使用する方法
は、カード類には適するがそれでもなお写真が登録され
たものである確証はない。
Furthermore, the method of directly engraving a portrait on a plastic card is difficult to colorize, so there are methods of forming a photo and text on the same photographic paper and creating a card, and methods of using a plastic film with an image formed on it as an oversheet for the card. is suitable for cards, but there is still no guarantee that the photo is registered.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

本発明は、カード等の画像が登録されたものであるか否
かを判定する方法及びその判定装置を提供することを目
的としている。
An object of the present invention is to provide a method and apparatus for determining whether an image of a card or the like is registered.

〔課題を解決するための手段〕[Means to solve the problem]

上記目的を達成するために、画像を含むカード等の、画
像の検出信号をフーリエ変換することによって周波数分
析し、振幅スペクトル又はパワースペクトルの、特定の
周波数に対する振幅の大きさ又は周波数が含まれている
割合を、画像の特徴とし、これを、画像を含むカード等
に記録する。
To achieve the above purpose, the detection signal of the image, such as a card containing the image, is frequency-analyzed by Fourier transform, and the magnitude or frequency of the amplitude spectrum or power spectrum for a specific frequency is analyzed. The ratio of the images is taken as a feature of the image, and this is recorded on the card containing the image.

この記録した画像の特徴が登録された情報となる。The characteristics of this recorded image become registered information.

画像を含むカード等において、画像が登録されたものか
否かの判定は、上記のように画像を検出し、画像の特徴
を求め、事前にカード等に記録されている画像の特徴と
比較して判定する。
To determine whether or not an image is registered on a card, etc. that contains an image, the image is detected as described above, the characteristics of the image are determined, and the images are compared with the characteristics of the image recorded in advance on the card, etc. Make a judgment.

上記の、画像の検出は、色情報又は濃度情報に限ること
はなく、また、検出範囲は画像の一部又は全てのいずれ
でもよい。
The above-mentioned image detection is not limited to color information or density information, and the detection range may be part or all of the image.

更に、上記の、画像の特徴を、カード等に記録する方法
は、磁気テープ、磁気層、磁気インキ文字読取り手段等
の磁気の利用、バーコード、光学的文字認識、メモリー
(記憶装置)への記録、その他同効の手段でもよい。
Furthermore, the above-mentioned methods for recording image characteristics on cards, etc. include the use of magnetism such as magnetic tape, magnetic layers, magnetic ink character reading means, bar codes, optical character recognition, and recording in memory (storage devices). Records or other means with the same effect may also be used.

〔作用〕[Effect]

前記の判定方法は、画像の特徴を、画像から検出した情
報に基づいて決定するため、画像から特徴を求める位置
を自由に選択することができる。
Since the above-mentioned determination method determines the characteristics of an image based on information detected from the image, it is possible to freely select the position from which the characteristics are determined from the image.

画像の周波数成分は、同一の画像であっても画像の位置
により異なる。すなわち、画像の特徴を算出する方法が
明らかになっても、画像の特徴を算出する情報の位置が
明らかにならなければ、偽造又は変造が難しい。例えば
、画像及び画像を含むカード等に記録した特徴の両方を
同時に偽造又は変造したとしても、登録者と判定するこ
とはなく、偽造又は変造がしにく(、従って安全性が高
い。
The frequency components of an image differ depending on the position of the image even if the image is the same. That is, even if the method for calculating the image features is revealed, it is difficult to forge or alter the information unless the location of the information used to calculate the image features is clear. For example, even if both the image and the characteristics recorded on the card containing the image are forged or altered at the same time, the card will not be determined to be a registrant, and the forgery or alteration will be difficult (therefore, the security will be high).

また、上記の判定方法は、画像を検出する検出。Moreover, the above determination method is a detection method that detects an image.

器、画像の特徴の記録及び読取り装置、画像の特徴及び
画像の特徴の比較等の演算を行うコンピュータから構成
される装置により、画像が登録されたものであるかを、
短時間で正確に判定することができる。
A device consisting of a device, a device for recording and reading image characteristics, and a computer that performs calculations such as comparing image characteristics and image characteristics determines whether an image has been registered.
Accurate judgment can be made in a short time.

〔実施例〕〔Example〕

第1図は、本発明の原理ブロック図である。画像(1)
を含むカード等(2)の画像(1)を検出器(3)によ
り検出し、検出した信号を増幅器(4)で増幅し、アナ
ログ・ディジタル変換器(5)でディジタル化する。
FIG. 1 is a block diagram of the principle of the present invention. Image (1)
An image (1) of a card, etc. (2) containing a card is detected by a detector (3), the detected signal is amplified by an amplifier (4), and digitized by an analog-to-digital converter (5).

信号処理部(6)においてディジタル化した検出信号を
高速フーリエ変換して周波数解析を行い、周波数成分か
ら、画像(1)の特徴を演算して求める。求めた画像の
特徴を記録部(7)により、画像(1)を含むカード等
(2)に記録する。
A signal processing unit (6) performs a fast Fourier transform on the digitalized detection signal to perform frequency analysis, and calculates and obtains the features of the image (1) from the frequency components. The characteristics of the image obtained are recorded by the recording unit (7) on a card or the like (2) containing the image (1).

画像(1)を含むカード等(2)において、画像(1)
が、登録されたものか否かの判定は、画像(1)の特徴
と、記録の読取り部(8)が読取った画像(1)を含む
カード等(2)に記録されている画像(1)の特徴を、
判定部(9)で比較して行い、その結果を、結果の表示
部(10)に表示する。
In a card, etc. (2) that includes image (1), image (1)
However, the determination as to whether the image (1) is registered or not is based on the characteristics of the image (1) and the image (1) recorded on the card etc. (2) containing the image (1) read by the recording reading unit (8). ) characteristics,
The determination section (9) performs the comparison, and the result is displayed on the result display section (10).

第2図は本発明の身分証明書カードでの実施例を示す。FIG. 2 shows an embodiment of the present invention in an identification card.

この実施例では、左右に移動可能なチーフル(1ηに、
身分証明書カード(12)を置き、身分証明書カード(
12)に張り付けたカラーの肖像写真(11)を、ハロ
ゲンランプ■の光を光ファイバー(14)で導いて照射
し、左右に移動可能なテーブル(1力を移動させながら
カラーの肖像写真(11)の端から1.024箇所の反
射光を、光電検出器(13)で電気信号に変換して検出
した。光電検出器(13)で変換した電気信号を、アナ
ログ・ディジタル変換器でディジタル化した後、コンピ
ュータ(15)に入力した。コンピュータ(15)は、
入力信号をフーリエ変換し、入力信号に含まれている周
波数成分の振幅の大きさを求めた。この中から、50個
の周波数成分の振幅の大きさを、カラーの肖像写真(1
1)の特徴として抽出し、カードリーダ・ライタ面番通
して身分証明書カード(12)の磁気テープ(18)に
記録した。カラーの肖像写真(11)の特徴を記録した
身分証明書カード(12)の、カラーの肖像写真(11
)が登録されたものか否かの確認は、上記と同様にカラ
ーの肖像写真(11)の特徴を求めるとともに、磁気テ
ープ(18)に記録したカラーの肖像写真(11)の特
徴をカードリーダ・ライタ(X9)で読取り、磁気テー
プ(18)に記録したカラーの肖像写真(11)の特徴
に対し、検出したカラーの肖像写真(11)の特徴が各
周波数成分ごとに±10%以内である数によって判定し
、その結果をデイスプレィ(16)に表示した。
In this example, a chifur (1η,
Place the ID card (12) and insert the ID card (
A color portrait photograph (11) pasted on a table (12) is irradiated with light from a halogen lamp (14) guided by an optical fiber (14), and a color portrait photograph (11) is displayed while moving from side to side on a table that can be moved from side to side. The reflected light from 1.024 points from the edge was converted into an electrical signal and detected by a photoelectric detector (13).The electrical signal converted by the photoelectric detector (13) was digitized by an analog-to-digital converter. After that, I entered it into the computer (15).The computer (15)
The input signal was Fourier transformed, and the magnitude of the amplitude of the frequency component included in the input signal was determined. From these, the magnitude of the amplitude of 50 frequency components was calculated using color portrait photographs (1
1) was extracted and recorded on the magnetic tape (18) of the identification card (12) through the card reader/writer surface number. A color portrait (11) of an identification card (12) recording the characteristics of a color portrait (11)
) is registered, check the characteristics of the color portrait photo (11) in the same way as above, and check the characteristics of the color portrait photo (11) recorded on the magnetic tape (18) using the card reader.・The characteristics of the detected color portrait (11) read by the writer (X9) and recorded on the magnetic tape (18) are within ±10% for each frequency component. It was determined based on a certain number and the result was displayed on the display (16).

その結果、同一人物であっても撮った方向が異なる写真
を張った場合及び他の人物の写真に張り替えた場合には
、登録した写真でないと判定した。
As a result, if a photo of the same person was taken in a different direction, or if the photo was replaced with a photo of another person, it was determined that the photo was not registered.

」1記実施例においての画像の特徴は、入力信号に含ま
れている特定の周波数成分における振幅の大きさによっ
て決定したが、入力信号に含まれている特定の周波数成
分の各々の割合を特徴として抽出してもよい。
The image characteristics in Example 1 are determined by the magnitude of the amplitude of specific frequency components included in the input signal, but the characteristics of the image are determined by the proportion of each specific frequency component included in the input signal. You can also extract it as

〔発明の効果〕〔Effect of the invention〕

1 同一人物であっても写真を撮った方向が異なる写真
を張った場合及び他の人物の写真に張り替えた場合には
、登録した写真でないと判定できる。
1. Even if the photo is of the same person, if the photo was taken in a different direction, or if the photo is replaced with a photo of another person, it can be determined that the photo is not a registered photo.

2 画像の検出方法、画像の特徴を算出する方法及び画
像の記録方法が明らかになっても、画像の特徴を算出す
る情報の位置が明らかにならなければ、本発明の改さん
判定方法及び装置により、異なることが明確となり、偽
造又は変造を防止できる。従って安全性が高い。
2 Even if the image detection method, image feature calculation method, and image recording method are clarified, if the location of the information for calculating the image features is not clear, the falsification determination method and device of the present invention This makes it clear that they are different and prevents forgery or alteration. Therefore, it is highly safe.

3 合理的な装置により、写真、絵画などの画像が登録
されたものであるかを、短時間で正確に判定することが
できる。
3. With a rational device, it is possible to accurately determine in a short time whether an image such as a photograph or painting is registered.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の原理フロック図、第2図は本発明の身
分証明書カードでの実施例を示す図である。 1・写真、絵画などの画像 2 写真、絵画などの画像
を含むカード、冊子及び帳票類等 3・・・検出器 4
・・・増幅器 5・・・アナログ・ディジタル変換器 
6・・信号処理部 7・記録部 8・・・記録の読取り
部 9・・・判定部 10・・・結果の表示部 11・
・・カラーの肖像写真 12・・身分証明書カー1’ 
 13・・。 光電検出器 14・・・光ファイバー 15  コンピ
ュータ 16・・・デイスプレィ 17 ・左右に移動
可能なテーブル 18・・・磁気テープ 19・・カー
ドリーダ・ラ  。 イタ 20・・・ハロゲンランプ 第1図 第2図
FIG. 1 is a block diagram of the principle of the present invention, and FIG. 2 is a diagram showing an embodiment of the present invention in an identification card. 1. Images such as photographs and paintings 2 Cards, booklets, forms, etc. containing images such as photographs and paintings 3. Detector 4
...Amplifier 5...Analog-digital converter
6... Signal processing section 7. Recording section 8... Record reading section 9... Judgment section 10... Result display section 11.
・・Color portrait photo 12・・Identification card 1'
13... Photoelectric detector 14... Optical fiber 15 Computer 16... Display 17 - Table that can be moved from side to side 18... Magnetic tape 19... Card reader/ra. Ita 20...Halogen lamp Figure 1 Figure 2

Claims (1)

【特許請求の範囲】 1、写真、絵画などの画像を含むカード、冊子及び帳票
類等において、写真、絵画などの画像の所望の位置を色
情報又は濃度情報などとして検出し、検出した信号の特
定の周波数成分を写真、絵画などの画像を含むカード、
冊子及び帳票類等に記録し、写真、絵画などの画像を含
むカード、冊子及び帳票類等において本人確認の必要時
に、写真、絵画などの画像と、写真、絵画などの画像を
含むカード、冊子及び帳票類等の記録と比較することに
よって、両方が同一の写真、絵画などの画像から得られ
たものかを判定する画像改ざん判定方法。 2 写真、絵画などの画像の特徴を記録する方法は、磁
気テープ、磁気層、磁気インキ文字読取り手段等の磁気
の利用、バーコード、光学的文字認識、メモリー(記憶
装置)への記録、その他同効の手段を使用する請求項1
記載の画像改ざん判定方法。 3、写真、絵画などの画像を検出し、その信号を増幅器
で増幅し、アナログ・ディジタル変換器でディジタル化
した後、信号処理部において周波数解析を行い、周波数
成分から画像の特徴抽出を行って、これを記録部により
写真、絵画などの画像を含むカード、冊子及び帳票類等
に記録し、また、写真、絵画などの画像が、登録された
ものか否かの判定を、記録の読取り部が読取った写真、
絵画などの画像と写真、絵画などの画像を含むカード、
冊子及び帳票類等の記録を比較して行い、その結果を、
結果の表示部に表示する、請求項1記載の画像改ざん判
定装置。
[Claims] 1. In a card, booklet, form, etc. containing an image such as a photograph or painting, a desired position of the image such as a photograph or painting is detected as color information or density information, and the detected signal is Cards containing images such as photographs, paintings, etc. with specific frequency components;
Cards and booklets that are recorded in booklets and forms, etc., and contain images such as photographs and paintings, and cards and booklets that contain images such as photographs and paintings, and when it is necessary to verify the identity of the person in the booklet and forms, etc. An image tampering determination method that determines whether both images are obtained from the same photograph, painting, etc. by comparing them with records such as documents and documents. 2. Methods for recording the characteristics of images such as photographs and paintings include the use of magnetism such as magnetic tape, magnetic layers, magnetic ink character reading means, bar codes, optical character recognition, recording in memory (storage device), etc. Claim 1 using means with the same effect
Described image tampering determination method. 3. After detecting an image such as a photograph or painting, amplifying the signal with an amplifier and digitizing it with an analog-to-digital converter, frequency analysis is performed in the signal processing section and image features are extracted from the frequency components. The recording section records this information on cards, booklets, forms, etc. containing images such as photographs and paintings, and the recording section determines whether or not images such as photographs and paintings have been registered. The photo read by
Cards containing images such as paintings and photographs, images such as paintings,
Compare records such as booklets and forms, and compare the results.
The image tampering determination device according to claim 1, wherein the image tampering determination device displays the result on a display section.
JP63137309A 1988-06-06 1988-06-06 Method and device for discriminating forging of picture Pending JPH01306983A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63137309A JPH01306983A (en) 1988-06-06 1988-06-06 Method and device for discriminating forging of picture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63137309A JPH01306983A (en) 1988-06-06 1988-06-06 Method and device for discriminating forging of picture

Publications (1)

Publication Number Publication Date
JPH01306983A true JPH01306983A (en) 1989-12-11

Family

ID=15195673

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63137309A Pending JPH01306983A (en) 1988-06-06 1988-06-06 Method and device for discriminating forging of picture

Country Status (1)

Country Link
JP (1) JPH01306983A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02258277A (en) * 1989-11-27 1990-10-19 Victor Co Of Japan Ltd Recording device
JP2003237265A (en) * 2002-02-15 2003-08-27 Hiroshi Kondo Passport, passport making system, and forged passport detecting system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02258277A (en) * 1989-11-27 1990-10-19 Victor Co Of Japan Ltd Recording device
JP2003237265A (en) * 2002-02-15 2003-08-27 Hiroshi Kondo Passport, passport making system, and forged passport detecting system

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