KR20060009403A - Wireless telecommunication devices - Google Patents

Abstract

The present invention relates to a portable wireless communication device, comprising: a camera having a user's iris image input function; A memory for storing features of an iris image image input from the camera; An agent for transmitting a feature of an iris image image input from the camera to a server on a communication network for storage and requesting user authentication, and transmitting a feature of a iris image image newly input through the camera to the server; It is characterized by having.

Wireless communication device, image input device, iris recognition, iris authentication

Description

Portable Telecommunication Devices

1 is a simple configuration of an iris recognition system and an iris authentication system using a wireless communication device according to the present invention.

2 is an internal configuration diagram of a personal wireless communication device equipped with an image or image input device in a wireless system.

3 is a diagram illustrating an embodiment of an iris image input to an LCD screen of a wireless communication device.

4 is a more detailed internal configuration diagram of an iris recognition system of a wireless communication device and an iris authentication system of an authentication server.

5 is a diagram illustrating an example of improving quality of an iris image input to an image processing processor.

FIG. 6 is an exemplary diagram illustrating feature extraction and image information separation of an iris by applying separation of an iris image and a polar coordinate system.

7 is an embodiment showing encryption and compression of separated iris data.

8 is a flowchart illustrating a process of collecting, storing, and image processing, encrypting, and compressing an iris image in an iris recognition system.

9 is a flowchart illustrating a process of processing iris data transmitted from an iris recognition system in an iris authentication system.

<Description of main parts of drawing>

10: wireless communication device 11: RF processing unit

12: IF processor 13: BASEBAND processor

14: image / image processing unit 20: authentication server

30: iris body authentication system 31: iris body data receiver

32: decompression unit 33: decryption unit

34: Hongchei Certification Department 35: Hongche DB

36: iris authentication processing unit 40: iris recognition system

41: iris recognition agent 42: iris image collector

43: Temporary storage of the iris image 44: Image processing processor

45: data encryption processing unit 46: data compression unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for wireless iris recognition using biometrics, and includes a mobile communication terminal, a PDA equipped with CDMA, and a wireless communication device such as a smartphone. After mounting the input device, the present invention relates to a method for providing an intelligent wireless security system based on texture information of an iris among human biological features.

Biometrics using biometrics has almost no risk of loss, theft, forgetting, or copying due to external factors, and has a feature that enables tracking of security breaches. Such biometric technologies include palmprint recognition, facial recognition, vein recognition, voice recognition, retinal recognition, fingerprint recognition, and iris recognition.

Among the biometric methods, palmprint recognition, facial recognition, and vein recognition are not suitable for mounting in a wireless system because they have a high false recognition rate, a principle of constant immutability, and miniaturization of equipment size.

Among the biometric methods, voice recognition uses Speech Verification System or Voice Print System, and can be easily recognized from a remote location, so it can be easily implemented in a wireless communication device equipped with voice communication. There is this. However, voice recognition cannot be recognized when the user's neck is restless, errors are likely to occur when recording or intentionally mimicking the voice of others, and the recognition rate is reduced due to the high noise in wireless environment. It is not suitable for practical use as a method of biometrics in communication systems.

Among the biometric methods, retinal recognition utilizes that the composition of the capillaries located on the back of the eye has the characteristics of lifelong implications, and after reflecting a weak red ray into the eye to read the pattern of the retinal capillaries, Measure Therefore, in order to recognize a successful retinal capillary pattern, the eye must be removed and the eye focused on the reflection of red light in the dark areas of the round cylinder of the eyepiece. Such retinal recognition has the advantage of satisfying a high degree of security, but is also unsuitable for mounting in a small device such as a wireless communication system, and there are disadvantages of causing inconvenience and discomfort as well as causing fear.

Among the biometric methods, fingerprint recognition uses an immutable fingerprint in which sweat glands are raised to form a constant flow. There are two types of fingerprint recognition methods, an optical method and a non-optical method. Optical fingerprint recognition methods include a fingerprint recognition method using a prism and a fingerprint recognition method using a hologram, and a non-optical fingerprint recognition method includes a fingerprint recognition method using a sensor array, a fingerprint recognition method using an electric field, and an ultrasonic wave. There is a fingerprint recognition method using (Ultrasonic Wave). Among them, the fingerprint recognition method applicable to the wireless communication system is a fingerprint recognition method using a non-optical sensor array and an electric field, but is vulnerable to static electricity and external shock, and is easily oxidized by chemicals in the body and air, and sweat or moisture Has a disadvantage in that the false recognition rate is increased when it is buried in the sensor.

Among the biometric methods, the iris recognition method uses a constant immortal iris that is formed before the age of three after birth, and uses texture information such as iris pattern, shape, and color, and has almost no false recognition rate and false rejection rate. Has Unlike the retina, the iris is located on the surface of the eye, so it is not affected by intraocular disease, and is not related to eye redness. Image information captured by cameras or CCD cameras can be easily processed through image processing. In addition, the type of pattern used for iris recognition is 1078 or more, which may be used as a more complete biometric method than a fingerprint having a pattern type of about 1012. In addition, various methods have been researched that can fundamentally prevent iris theft through body harm and a corresponding method by sensing wavelengths occurring in the eyes using light emitting diodes and the like.

In order to solve the above problems, the present invention utilizes a wireless communication device (mobile communication terminal, wireless communication PDA, smart phone, all wireless communication devices including IMT 2000) equipped with an image input device, the user's iris After receiving the image, the iris recognition system generates data for iris recognition through a series of processes such as image processing, encryption and compression, and receives the iris recognition data generated by the iris recognition system to decompress and decrypt the data. Process the user authentication of the iris recognition data through a series of processes such as data comparison, and return the authentication result to the iris recognition system, or the authenticated iris such as an e-commerce system, cyber financial system, or cyber securities system By sending data via wired or wireless to all on / offline systems that need data, The purpose is to provide an iris authentication system that provides personal identification and authentication services of iris inputters.

The present invention uses the wireless communication device (mobile communication terminal, wireless communication PDA, smart phone, all wireless communication devices including IMT 2000) equipped with an image input device, after receiving the user's iris image, image processing Iris recognition system that generates iris recognition data through a series of processes such as encryption and compression, and iris recognition data generated by the iris recognition system is transmitted to decompress, decrypt, and compare data. Process the user authentication of the iris recognition data, and return the authentication result to the iris recognition system, or all the On / which requires the authenticated iris data such as an e-commerce system, a cyber financial system, or a cyber securities system. Personal identification and certificate of iris input by transmitting via wired or wireless to off-line system It relates to the iris authentication system which provides gases.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the following examples are one of various methods for most appropriately explaining the present invention, and the present invention is not limited to the following examples.

The present invention uses the wireless security system as shown in Figure 1 for a suitable embodiment. Referring to FIG. 1, the wireless communication system 10 is equipped with an image or image input device such as a CCD camera, and a personal identification and authentication system exists in the authentication server 20 of the wired Internet network. This is only to describe the present invention using a simple embodiment for accessing the electronic payment system existing in the wired Internet network from the wireless Internet network, as described above, the embodiment of the present invention is to recognize the iris in the wireless Internet network Includes all personal identification and security systems through.

2 is an internal block diagram of a personal wireless communication device equipped with an image or image input device in a wireless system.

An iris recognition system using a wireless communication device is divided into an RF processing unit 11, an IF processing unit 12, and a BASEBAND processing unit 13, and the like. Here, a small image or an image such as a CCD (Charge Coupled Device) camera 14 is included. This is achieved by mounting an input device and mounting the iris recognition system 40 on the BASEBAND processing unit.

The image or image input device of the wireless communication device is composed of an image acquisition unit and an image output unit for outputting a video signal, and the image acquisition unit is composed of CCD elements, as shown in FIG. It receives an iris image. Image acquisition units generally meet International Standards (CCIR: Comite Consultatif International des Radio communications or EIA: Electronics Industries Association). According to this specification, the response rate of the image acquisition unit is 1 / 50s for CCIR and 1 / 60s for EIA. In addition, when the image or image input device is used only for iris recognition, color input is not necessarily required, so that a color processing unit using a filter and a prism is not required for the image or image input device, and further use is possible. In addition, due to the selectivity of the CCD device, not only visible wavelengths but also infrared and near infrared regions can be processed. If the iris recognition image input device uses a CCD device having excellent response speed in the infrared or near infrared region, iris recognition can be performed even in a dark place at night. The iris image input by the image collection unit of the image or image input device is transmitted from the video signal output unit to the iris recognition system to the BASEBAND processing unit via a data bus.

4 is a more detailed internal block diagram of an iris recognition system of a wireless communication device and an iris authentication system of an authentication server.

The iris recognition system 40 of the wireless communication device is composed of an iris recognition agent 41, an iris image collecting unit 42, an image processing unit 44, an encryption processing unit 45, and a data compression unit 46. The parts of the iris recognition system 40 will be described below.

Image data input to the iris recognition system 40 via the video signal output unit of the image or image input device 14 is temporarily stored by the iris image collecting unit 42 via the iris recognition agent 41. The reason for temporarily storing the iris image is to improve the quality of the iris image through image processing.

The image processing processor 44 of the iris recognition system 40 includes zoom-out and zoom-in of the image, level values for each channel, contrast, and brightness. Image processing of the input iris data using color, hue, and saturation. The iris image input from the wireless system is heavily influenced by the surrounding environment, and the input image may not be used for iris recognition in some cases. The image processing processor 44 improves the quality of the iris image by using a software method such that the input image can be used for iris recognition as shown in FIG. 5. After determining the boundary between the pupil and the iris as shown in Fig. 6, the left radius and the right radius of the iris are determined, and the iris image is separated using this information. When the boundary information of the iris is set, the polar coordinate system is applied to extract the feature of the iris, and the image information is separately stored.

The data encryption processing unit 45 of the iris recognition system 40 encrypts the separated iris data by a given algorithm as shown in FIG. 7, and the data compression unit 46 compresses the encrypted iris data to reduce the data size. In this way, the iris data separated by the image processing processor 44 and then subjected to encryption and compression processes can be completely protected even if exposed to a third party during transmission to the authentication server 20. To provide.

The iris data receiving unit 31 of the iris authentication system 30 receives the iris data from the iris recognition system 40, and the decompressor 32 compresses the data by the data compression unit 46 of the iris authentication system 30. The original data by restoring the stored data. Then, the decryption unit 33 processes the image by the image processing processing unit 44 of the iris recognition system 40 by decrypting the encryption using the encryption algorithm processed by the encryption processing unit 45 of the iris recognition system 40. Fully restored raw iris data.

The iris authentication unit 34 of the iris authentication system 30 uses a coordinate system applied to the image processing processor 44 of the iris recognition system 40 to extract a local pattern from the reconstructed raw iris data. Split the data area. The divided tracks are converted using a 2D Gabor filter and encoded using protection of real and imaginary parts of data. The encoded iris data is compared with the base iris information of the iris DB 35 to determine whether to authenticate the currently input iris feature.

The iris authentication processing unit 36 of the iris authentication system 30 returns the authentication result processed by the iris authentication unit 34 to the iris recognition system 40 or, such as an e-commerce system, a cyber financial system, or a cyber securities system. By transmitting the authenticated iris data to the system in need, it provides a personal identification and authentication service of the iris inputter.

8 is a flowchart of a process of image processing, encryption, and compression after collecting and storing an iris image in the iris recognition system 40.

The iris recognition system 40 receives the iris image from the image or the image input device 14 (801), and then checks whether the information is possible for iris recognition (802). If there is an identifiable iris image in the image, the iris image collecting unit 42 stores the image in the temporary storage device 43 (804). On the contrary, if the iris is not found in the collected image or if the bad image is collected to be unusable, the iris image collector 42 requests the user to re-enter the iris image (803).

When the iris image is collected from the iris image collecting unit 42 of the iris recognition system 40, the iris recognition agent 41 removes the image interference effect caused by wearing glasses or a contact lens through the image processing unit, and the iris pattern Enlarge or reduce the image to a size that can be analyzed. When the basic image processing process is finished (805), the image processing processor determines the boundary between the pupil and the iris after securing the pupil area using the binarized image data (806), and determines the left and right boundaries of the iris based on this. (807). Based on the inner and outer boundaries of the iris determined as described above, the image processing processor separates the iris from the base image using the polar coordinate system (808), and then uses the polar coordinate system as shown in FIG. Divide.

The data encryption processing unit 45 of the iris recognition system 40 rearranges the divided iris data according to a given rule, and encrypts the iris data using an encryption algorithm (809). The data compression unit 46 compresses the iris data processed by the encryption processing unit 45 to reduce the size (810).

When the processing of the iris data input from the iris recognition system 40 ends, the iris recognition agent 41 transmits the iris data to the authentication server 20 through the wireless Internet network (811). Data communication from the iris recognition system 40 to the authentication server 20 is guaranteed by the wireless Internet protocol, and when the transmission is completed, the iris recognition agent 41 deletes the temporarily stored iris image and related information (812). If the deletion is not completed (813), the deletion process is resumed.

9 is a flowchart illustrating a process of processing iris data transmitted from the iris recognition system 40 in the iris authentication server.

The iris data receiving unit 31 of the iris authentication system 30 receives iris data transmitted from the iris recognition system 40 through image processing, encryption, and compression through the wireless Internet, and the decompression unit 32 receives the iris data. And decryption unit recovers the raw iris image data identical to the iris data processed by the image processing processor of the iris recognition system 40 using the same algorithm as the encryption algorithm of the iris recognition system 40.

The iris authentication unit of the iris authentication system 30 uses the same polar coordinate system as the iris recognition system 40 to determine the iris pattern extraction area using a band-shaped track, and divides the data to extract the local pattern of the secured iris area. do. The tracks divided in this way represent the iris pattern of the track area. The tracks are converted by using a 2D Gabor filter. The converted data is encoded using the real and imaginary codes, and then compared with the reference iris code stored in the iris DB 35 to check whether the input iris code and the reference iris code are the same. If the same iris code, and transmits the result to the system that requires personal identification and security authentication through iris recognition, and transmits the final authentication confirmation to the iris recognition system 40. On the contrary, if it is not the same iris code, the currently input iris data is used to transmit to the iris recognition system 40 that it cannot be used for personal identification and security authentication.

According to the present invention, since the personal authentication service is carried out using a portable wireless communication device, it is possible to reduce the inconvenience for the client using the present invention. Because of the use, the false recognition rate and false rejection rate in the personal identification process are advantageous.

In addition, since the iris is located on the surface of the eye unlike the retina, the iris is not affected by intraocular diseases and can be recognized regardless of eye redness, and it is inconvenient to use unlike the retina recognition, which requires the eye to be closely attached to the eyepiece. And there is no discomfort.

In addition, the type of pattern used for iris recognition is 1078 or more, which can be used as a more complete biometric method than a fingerprint having a pattern type of about 1012. Also, by detecting a wavelength generated by the eye using a light emitting diode or the like. In addition, there is an advantage in that it is possible to fundamentally prevent iris theft through body harm and a corresponding method.

In addition, it is easy to transmit / receive data with the iris authentication system through a wireless communication device, and all on / off data requiring the authenticated iris data such as an e-commerce system, a cyber financial system, or a cyber securities system in the iris authentication system. By real-time transmission via wired or wireless to the off-line system, there is an advantage that the personal identification and authentication service of the iris input can be more conveniently and securely provided.

Claims (1)

A camera having a user's iris image input function; A memory for storing features of an iris image image input from the camera; An agent for transmitting a feature of an iris image image input from the camera to a server on a communication network for storage and requesting user authentication, and transmitting a feature of a iris image image newly input through the camera to the server; And a portable wireless communication device.

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