CN100369045C - Fast customs clearance method based on biological passport - Google Patents

Abstract

The invention relates to the field of pattern recognition technology, in particular to a bio-passport-based quick pass method combining face detection and recognition technology, iris extraction and recognition technology, fingerprint collection and recognition technology, light processing technology and biometric encryption technology. Included steps: firstly collect biometric features of the biological passport holder, including facial features, fingerprints and irises. The collected images and features are stored in the non-contact large-capacity IC radio frequency chip embedded in the biological passport. During customs clearance, the customs clearance system reads the biometric data of the customs passer in the biological passport and compares it with the biometric data of the customs passer collected on the spot. If the comparison is successful, the customs passer is allowed to pass the customs smoothly, otherwise the passer will be rejected Clearance.

Description

Fast customs clearance method based on biological passport

technical field

The invention relates to the field of pattern recognition technology, in particular to a rapid customs clearance method based on biological passports combined with face detection and recognition technology, iris extraction and recognition technology, fingerprint collection and recognition technology, light processing technology and biometric encryption technology.

Background technique

In recent years, biometric identification technology has shown an explosive development momentum. The September 11 incident highlighted the threat of terrorism to world security, and strengthening border security and identity verification is an effective measure to combat terrorism. International Civil Aviation Organization (ICAO) released the Biotechnology Application Plan (ICAO Blueprint) on May 28, 2003 to help countries establish a globalized and standardized identity verification system. At present, Europe, the United States, Japan and many countries in the world are preparing to gradually use biological passports in the short term.

A biological passport refers to a passport that encapsulates an IC chip containing human biometric information. Biometrics such as face, iris, and fingerprints are considered to be different from person to person and remain unchanged throughout life. Therefore, it is the most reliable identification method to conduct identity verification by comparing the human body biometrics in the IC chip with the human body biometrics collected on-site. .

The so-called biometrics (BIOMETRICS) identification technology refers to the use of the inherent physiological or behavioral characteristics of the human body for personal identification through computers. Physiological characteristics are innate, mostly congenital; behavioral characteristics are dictated by habit, mostly acquired. We refer to physiological and behavioral characteristics collectively as biometrics. Commonly used biometrics include: fingerprints, palm prints, irises, faces, voices, handwriting, etc.

Use facial, iris and fingerprint features in our biometric passport fast track system. Features of this system include:

● No manual intervention is required for customs clearance, and the customs clearance speed is fast;

●A variety of anti-counterfeiting technologies are used, which are highly secure and difficult to forge;

●Using multiple biometrics for identification, the reliability is extremely high;

●Multiple biometric fusion identification method can be used flexibly according to the level of security requirements, so that the system can be applied to various occasions;

●The core technology can be used in passports, visas, bank credit cards and other machine-readable documents;

●It can identify wanted criminals and criminal suspects, etc.

As far as biometric identification technology is concerned, a single biometric will more or less have misidentification in terms of recognition effect. This system adopts a variety of biological feature fusion recognition methods, which will greatly reduce the error recognition rate, and the multi-biological feature fusion mechanism also brings flexibility and variability.

Contents of the invention

The purpose of the present invention is to provide a rapid customs clearance method based on a biometric passport under the condition that the user is required to be authenticated. This method confirms the legitimacy of the passer and the biological passport held by the passer by automatically recognizing the face, iris, fingerprint and other biometric features of the passer, thereby realizing a rapid customs clearance process. The physical picture of the system is shown in Figure 1. This system includes two parts:

1. Card making part: save the biometric information of the customs passer in the biometric passport.

a) Extract the biometric features of passers-by, including face, iris and fingerprint information. The schematic diagram is shown in Figure 2.

b) Encrypt the extracted biometric features and save them in the biometric passport. The schematic diagram is shown in Figure 3.

2. Customs clearance part: Customs passers carry biological passports for customs clearance.

a) When a customs clearance person enters the effective identification range of the non-contact card reader with a biological passport, the card reader reads the data in the biological passport for decryption and analysis, thereby judging the legitimacy and validity of the biological passport. If it is legal and valid, go to the next step, otherwise, the passer will be refused to pass the pass.

b) Extract the face, iris and fingerprint features of the passer at the customs clearance site, and compare them with the biometric data stored in the biometric passport. If the comparison is correct, customs clearance is allowed, otherwise customs clearance will be rejected.

Description of drawings

Fig. 1 is the on-site rendering of the rapid customs clearance system based on the biological passport of the present invention;

Fig. 2 is the biometric feature extraction schematic diagram of the rapid customs clearance system based on biological passport of the present invention;

Fig. 3 is the bio-passport registration schematic diagram of the rapid customs clearance system based on the bio-passport of the present invention;

Fig. 4 is the bio-passport registration flowchart of the rapid customs clearance system based on the bio-passport of the present invention;

Fig. 5 is a flow chart of the biological passport customs clearance process of the rapid customs clearance system based on the biological passport of the present invention.

Detailed ways

The process in Figure 4 is as follows:

●Registration process of biological passport

1. Obtain facial images and corresponding feature templates:

S4-1 captures the video stream of the registrant's face through the camera connected to the computer;

S4-2 The facial image registration module evaluates the facial images extracted from the video stream and judges whether they meet the requirements of the frontal face and normal expressions. If they meet, proceed to the next step, otherwise continue to extract and evaluate the facial images in the video stream like picture;

S4-3 saves the facial feature template extracted from the facial image;

2. Obtain the iris image and the corresponding feature template:

S4-4 collects images of the registrant's iris through the iris collection device;

S4-5 The iris registration module evaluates the collected iris image and judges whether it meets the requirements, if it meets the requirements, proceed to the next step, otherwise it will prompt the registrant that the collected iris image does not meet the requirements and re-acquire;

S4-6 saves the iris feature template extracted from the iris picture;

3. Obtain the fingerprint image and the corresponding feature template:

S4-7 image acquisition of the fingerprint of the registrant through the fingerprint acquisition device;

S4-8 The fingerprint registration module evaluates the collected fingerprint image and judges whether it meets the requirements, if it meets the requirements, proceed to the next step, otherwise it will prompt the registrant that the collected fingerprint image does not meet the requirements and re-collect;

S4-9 saves the fingerprint feature template extracted from the fingerprint picture;

4. Registration of biological passport:

S4-10 The biological passport registration client encrypts the above-mentioned collected biometric pictures and corresponding feature templates with the public key of the registration client itself and sends them to the security center server, and the security center server will register the received data with the biometric passport After unlocking the private key of the client, encrypt the data with the private key of the registered client and send it to the registered client. The registered client will add the received data to the registration information header (including the registered client ID and related information) and the data check digit Then write it into the passport containing the large-capacity radio frequency card, in which the system of the radio frequency card and the key for reading and writing files are pre-designed values to ensure the readability of the card on different verification clients.

The process in Figure 5 is as follows:

●The customs clearance process of the biological passport

1. Data reading and authentication of biometric passports:

S5-1 When the non-contact card reader detects that a single biological passport enters the effective reading range, it will use the preset RF card reading key to read the data of the RF card;

S5-2 If the reading data fails or the check digit is wrong, it means that the card is a fake card or has been illegally altered. At this time, the system will alarm and prompt that the card is a forged card, waiting for the staff on duty to handle; otherwise, go to the next step;

S5-3 The biological passport verification client will encrypt the registration information header in the data stored in the biological passport with its own public key and send it to the security center server. The security center server will decrypt the information header with the private key of the biological passport verification client, and then find Register the public key of the client when registering, and then encrypt the public key of the registered client with the private key of the verification client and send it to the verification client. After receiving it, the verification client decrypts the data with its own public key to obtain the public key of the registration client, and then Use the obtained public key to decrypt the biometric data (including pictures and templates) in the card;

S5-4 If the decryption is successful, it means that the card is a genuine card, otherwise it is a fake card. At this time, the system will report to the police, and the prompt card is a fake card, waiting for the staff on duty to handle. Otherwise proceed to the next step;

S5-5, the first door of the customs clearance system will be opened, and the passer will be prompted to enter the biometric verification area;

2. Biometric verification process:

S5-6 Verification of facial features: compare the facial features saved in the biometric passport with the facial features collected at the customs clearance site, and those that reach the threshold of similarity are considered successful and proceed to the next step, otherwise the system It will be pointed out that the biological passport does not match the identity of its holder, waiting for the handling of the staff on duty;

S5-7 Verification of fingerprint features: compare the fingerprint features stored in the biometric passport with the fingerprint features collected at the customs clearance site, and those that reach the similarity threshold are considered successful and proceed to the next step, otherwise the system will point out the biometric The passport does not match the identity of its holder, waiting for the staff on duty to handle it;

S5-8 Verification of iris features: compare the iris features stored in the biometric passport with the iris features collected at the customs clearance site, and those that reach the threshold of similarity are considered successful and proceed to the next step, if the comparison is unsuccessful , the system will point out that the biological passport does not match the identity of the holder, and wait for the on-duty staff to handle it;

The second door of the S5-9 customs clearance system will open, and the passers-by will pass through the customs smoothly.

3. Flexible integration strategy for customs clearance of biometric passports: Considering the user's acceptance of biometric identification such as face image, iris and fingerprints, and without affecting security requirements, in order to minimize customs clearance time and improve customs clearance efficiency, we Provides a flexible integration strategy for customs clearance of biological passports;

a) Verification of face features: Among the three biometric features of face, iris and fingerprints, face recognition is the most acceptable, because people's appearance is public, unlike fingerprints and irises, which involve deep-seated Privacy issues, and face recognition is easy to use, the recognition speed is the fastest among the three biometric recognition, and has a high recognition rate, so it is reasonable to rank face recognition first in the recognition order, and the customs clearance system collects data on site The facial features of the passers-by are judged by similarity, and then enter the next step of fingerprint feature verification;

b) Verification of fingerprint features: Fingerprint recognition systems are the most commonly used in automatic biometric recognition systems. The acquisition of fingerprint images is much simpler than that of iris images, and the user's acceptance of fingerprint extraction is also higher than that of iris extraction, so We put the verification of fingerprint features in the second place. The customs clearance system collects the fingerprint features of the passers-by on the spot and judges the similarity, and then enters the next step of fusion judgment, fingerprint feature verification. If the passer does not pass the verification of fingerprint features, then The system will point out that the biological passport does not match the identity of its holder, and wait for the on-duty staff to handle it, otherwise proceed to the next step;

c) Fusion the facial image similarity and fingerprint similarity obtained above to obtain the fused similarity, compare the fused similarity with the existing similarity threshold obtained through statistical training, and there are three comparison results :

◆Pass the verification: allow the passer to pass the customs smoothly;

◆Verification failure: If the person who refuses to pass through the customs, the system will point out that the biological passport does not match the identity of the holder, and wait for the staff on duty to handle it;

◆Further verification is needed: Since the facial image and fingerprint recognition fusion strategy cannot accurately verify the identity of the passer, it is necessary to verify the iris feature. The iris is the texture outside the pupil of the human eye and is a lifelong biological feature. It is located inside the eye, so the possibility of being damaged and altered is very small. The iris recognition system has the highest recognition rate among the above three biometric recognition systems, but the collection of iris images is more difficult than the collection of facial images and fingerprint images. It also takes a long time, so the verification of iris characteristics is put at the last place in the verification sequence. If the verification of iris characteristics is passed, the passer is allowed to pass the customs smoothly, otherwise the system will point out that the biological passport does not match the identity of the holder, and wait. Handling of staff on duty.

Claims (3)

1. based on the method that speeds passage through customs of biological passport, comprise step:

The registration of biological passport: gather registrant's face picture, iris and fingerprint image, after encrypting, deposit in the biological passport;

Being open to the custom of biological passport: use the biological characteristic of Non-contact Media Reader reading and saving in biological passport, and be open to the custom collection in worksite to the person's of being open to the custom face picture, iris and fingerprint characteristic compare, if compare successfully, then allow the person of being open to the custom to be open to the custom smoothly, otherwise system will point out biological passport with it person's of being open to the custom status incongruence, wait for operator on duty's processing;

Biological characteristic syncretizing mechanism: the acceptance level of considering living things feature recognitions such as user opposite picture, iris and fingerprint, under the prerequisite that does not influence security requirement, in order to shorten the time of being open to the custom to greatest extent and to improve customs clearance efficiency, provide the biological flexibly passport convergence strategy of being open to the custom.；

Embedded chip is contactless high capacity RF IC chip in the biological passport, and chip storage capacity is greater than the 32K byte;

The iris capturing device is contactless remote capture device, and harvester is 5 centimetres～50 centimetres to the distance range of eyes; Infrared active light source irradiation eyes safe in utilization; The camera collection iris image that harvester is built-in; Capture program judges according to the texture of iris image whether this iris image meets the requirements, and provides voice suggestion signal and carried out distance adjustment by the picker;

The registration process of biological passport is as follows:

1) obtain face image pattern sheet and corresponding feature masterplate:

S4-1 catches into the video flowing of registrant face by the camera that is connected with computer;

The S4-2 face assesses and judges whether to meet requirements such as positive face and normal expression as Registering modules to the face image pattern sheet that extracts from video flowing, just carry out next step if meet, otherwise continue the face image pattern sheet in extraction and the assessment video flowing;

The face that the S4-3 preservation extracts from face image pattern sheet is as feature templates;

2) obtain iris picture and corresponding feature masterplate:

S4-4 carries out image acquisition by iris capturing equipment to registrant's iris;

S4-5 iris Registering modules is assessed and is judged whether the iris image that is collected and meets the requirements, and just carries out next step if meet the requirements, otherwise the iris image that will point out the registrant to collect is nonconforming and collection again;

S4-6 preserves the iris feature template that extracts from the iris picture;

3) obtain fingerprint picture and corresponding feature masterplate:

S4-7 carries out image acquisition by fingerprint acquisition instrument to registrant's fingerprint;

S4-8 fingerprint register module is assessed and is judged whether the fingerprint image that is collected and meets the requirements, and just carries out next step if meet the requirements, otherwise the fingerprint image that will point out the registrant to collect is nonconforming and collection again;

S4-9 preserves the fingerprint characteristic template that extracts from the fingerprint picture;

4) register biological passport:

The biological passport registered client of S4-10 is sent to security centre's server with above-mentioned biological characteristic picture that collects and corresponding feature templates behind the public key encryption with registered client itself, security centre's server is sent to registered client with registered client encrypted private key data after the data that receive can being untied with the private key of biological passport registered client more then, registered client writes in the passport that comprises the high capacity radio-frequency card after the data of receiving are added log-on message head and data check position, wherein the system of radio-frequency card and reading and writing of files key are design load in advance, to guarantee to be stuck in different checking client readability.

2. according to the method that speeds passage through customs based on biological passport of claim 1, the process steps of being open to the custom of its biological passport is as follows:

1) data read of biological passport and genuine/counterfeit discriminating:

S5-1 enters when reading effective range when Non-contact Media Reader detects single biological passport, can read the data that key removes to read radio-frequency card with default radio-frequency card;

If S5-2 reading of data failure or check bit mistake illustrate that then this card is pseudo-card or was illegally changed that this moment, system will report to the police, and cue card is the card of forging, and waits for operator on duty's processing; Otherwise carry out next step;

The biological passport checking client of S5-3 can will be sent to security centre's server behind the public key encryption of log-on message head with itself in the biological passport institute deposit data, security centre's server can be with the private key decryption information head of biological passport checking client, the PKI of registered client when finding registration then, issue checking client with the PKI of the encrypted private key registered client of checking client then, obtain the PKI of registered client after checking client is received again with PKI data decryption own, remove to decipher the interior biological attribute data of card with the PKI that obtains then;

If the S5-4 successful decryption illustrates that then this card is true card, otherwise just be pseudo-card that this moment, system will report to the police, and cue card is the card of forging, wait operator on duty's processing.Otherwise carry out next step;

S5-5 then first sect of clearance system will open, and the prompting person of being open to the custom enters the biological characteristic validation district;

2) biological characteristic validation process:

The S5-6 face is as the checking of feature: with the face preserved in the biological passport as feature be open to the custom collection in worksite to face compare as feature, reach the similarity thresholding be considered to compare success and carry out next step, otherwise system will point out biological passport and its holder's status incongruence, wait for operator on duty's processing;

The checking of S5-7 fingerprint characteristic: with the fingerprint characteristic preserved in the biological passport be open to the custom collection in worksite to fingerprint characteristic compare, reach the similarity thresholding be considered to compare success and carry out next step, otherwise system will point out biological passport and its holder's status incongruence, wait for operator on duty's processing;

The checking of S5-8 iris feature: with the iris feature preserved in the biological passport be open to the custom collection in worksite to iris feature compare, reach the similarity thresholding be considered to compare success and carry out next step, if comparison is unsuccessful, system will point out biological passport and its holder's status incongruence, wait for operator on duty's processing;

Second sect of S5-9 clearance system will be opened, and the person of being open to the custom is open to the custom smoothly.

3. according to the method that speeds passage through customs based on biological passport of claim 1, it is characterized in that the biological flexibly passport convergence strategy of being open to the custom also comprises step:

A) face is as the checking of feature: in face picture, iris and three biological characteristics of fingerprint, the identification of face picture is the easiest being accepted, so the face picture is discerned first that comes recognition sequence, the clearance system collection in worksite person's of being open to the custom face is as feature and carry out the similarity judgement, enters next step fingerprint characteristic checking then;

B) checking of fingerprint characteristic: fingerprint recognition system is that use is the most general in the automated biological feature identification system, the checking of fingerprint characteristic is placed on second, the clearance system collection in worksite person's of being open to the custom fingerprint characteristic also carries out similarity and judges, the fusion that enters next step is then judged;

Fingerprint characteristic checking, if the person of being open to the custom not by the checking of fingerprint characteristic, then system will point out biological passport and its holder's status incongruence, wait operator on duty's processing, otherwise carry out next step;

C) the above-mentioned face that obtains is merged as similarity and fingerprint similarity, the similarity after obtaining merging compares similarity after merging and the similarity thresholding that training obtains through statistics that has existed, and comparative result has three kinds:

◆ checking is passed through: allow the person of being open to the custom to be open to the custom smoothly;

◆ authentication failed: refusal the person of being open to the custom be open to the custom, and system will point out biological passport and its holder's status incongruence, waits for operator on duty's processing;

◆ remain further to be verified: because face picture and fingerprint recognition convergence strategy can't accurately be verified the person's of being open to the custom identity, so need carry out the checking of iris feature;

D) checking of iris feature:

Iris is the texture in the human eye pupil outside, it is unchangeable biological characteristic, simultaneously because iris is positioned at inside ofeye, so the possibility that is damaged and changes is also very little, iris authentication system is the highest system of discrimination in above-mentioned three living creature characteristic recognition systems, so the checking of iris feature is put into last position of checking order, if passed through the checking of iris feature, then allow the person of being open to the custom to be open to the custom smoothly, otherwise system will point out biological passport and its holder's status incongruence, wait for operator on duty's processing.

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