JPS5858684A - Individual discriminating system by picture image processing of hand mark, or the like - Google Patents

Abstract

PURPOSE:To execute an entry and departure control exactly and quickly, by digitizing a photographed video signal, storing it as a physical feature data, comparing and collating it with a discrimination data registered in advance, and deciding the identity. CONSTITUTION:A physical feature peculiar to an individual, such as a hand mark, etc. of an entering or departing person is photographed by a television camera 2, a video signal from this television camera 2 is digitized by a picture image processor 3 and is stored, is extracted as a physical feature data which is remarkably different from each individual, such as length of a finger, an area, etc., also discriminating data stored in advance (data such as length of a finger, an of the finger, etc. of all entering and departing persons) are compared and collated by a CPU 4, and whether the entering or departing person is true or not is discriminated. Unless the data whose picture image has been processed coincides with the discriminating data registered in advance, the identity of an individual is not confirmed, therefore, a perfect entry and departure control system can be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a personal identification system using image processing for handprints, etc.

Traditionally, 'J?' was placed at the entrance and exit of mold cost facilities. Methods for identifying individuals in access control include the use of secret codes, etc., the use of personal identification such as seals and identification cards, or the use of fingerprints, voice, voice, etc. There are many things that use gold such as unique germ characteristics for each sign etc.

However, there is a risk of these items being stolen, forged, or lost by using methods such as code codes, seals, and certificates, and in general, a large amount of information is required to identify individuals through consultations, etc. The present invention, which identifies people entering and exiting in a short time, was proposed in view of vaporization, and its purpose is to identify people's bills, etc.1. The unique physical characteristics of individuals are captured with a television camera,
Image processing of handprints, etc. that eliminates the disadvantages 11 of the conventional methods and makes it possible to create an accurate and quick entrance/exit pipe fM by performing image processing and identification using an image processing device, a computer, etc. The purpose is to provide a personal identification method by

Hereinafter, embodiments of the present invention will be explained in detail with reference to the drawings. Fig. 1 is a block diagram of a personal identification device used in the present invention. This is a fixed device that is fixed at a certain position to facilitate photographing by a television camera 2, which will be described later. This fixing device 1 includes, for example, a plurality of guide grooves 1b- formed on a substrate la on which a hand H is placed, as shown in the second figure, to indicate the position of the fingers.

A device with an upright guide rod 1c for positioning the base of the finger is not planned. A television camera 2 such as a CCTV camera is installed close to the fixing device 1. This television camera 22 is placed on the identification device 1 to take pictures of the hands of people entering and exiting. ! width, sync separation, A-D
It is configured to perform conversion, separate one screen into, for example, 128 x 128 dots or 256 x 256 dots, make each dot a 2-bit configuration, digitize the video signal, and store it in a memory such as RAM. ing. Here, the bit configuration of each dot is set to divide the brightness level into four stages, and by increasing the number of bits, it is possible to capture the brightness more precisely.

A computer 4 is connected to the image processing device 3 via an appropriate interface. The computer 4 calculates the position of the hand H and the length of the fingers based on a program stored in a ROM or the like in advance, such as a program that counts the number of dots with a certain brightness from data stored in the RAM of the ms processing device 3. , calculates with your fingers, memorizes the results, and also controls the entire system. In other words, as shown in Fig. 3, the reference line l
On hand H with the tips of two fingers aligned on d, the tips of six fingers from the index finger to the little finger 1 are all heavenly”!r r 7t
If lYs + 74 and the distance between the bases of the six fingers from the thumb to the little finger are xl l Xs l XB + X4, the length of the six fingers to be identified is the length from X to y. The dot red data of the part corresponding to the length from s
It becomes f-.

Also, the area of 6 fingers is, for example, the index finger #'iX+ t)
It can be approximated as the area of a triangle connected by '+ +

In addition, as a method of calculating the area of a finger, there is also a method of specifying an arc from the tip of the finger. The total area of hand H is almost the same as the method described above, and the total calculation of the area of the six fingers and the area of the palm determined by blood relation approximation is good.On the other hand, computer 4 calculates the total area of all the people entering and exiting. Identification data such as the length of the fingers of hand H and the area of the fingers are R, including a certain tolerance.
The identification data is stored in advance in a memory such as OM, RAM, etc., and when the handprint is photographed by the television camera 2 at the time of entering and exiting, the identification data is entered by the person's unique code or personal card. The data is read out to the CPU and compared with the data from the television camera 2 and the image processing device 3 to determine whether the person is entering or exiting.
Alternatively, each person entering and exiting may be required to hold in advance a card with a magnetic medium on which certain identification data is recorded in the form of residual data, and such registered card may be identified at the same time as the handprint is photographed at the time of entry and exit. The data is temporarily stored in the computer 4 via an appropriate reading device, and then the classification data is compared with the data sent via the television camera 2 and the image processing device (113) to determine the authenticity of the person entering and exiting. It is of course possible to provide the conventional memory for the video signal 8fi in the image processing device 3 in the computer 4.

The computer 4 is connected to the first computer via an interface as appropriate.
As shown in FIG. 1, an output device 5 is connected, and the output device a115 displays the verification result of the identification data in print or the like, and also opens and closes the entrance door as necessary.

Figure 4 shows the flow of processing according to this method. First, as described above in step 11.4, the person entering and exiting enters and exits by using a code, Δpower using a personal card, or supplying a registered card. Based on the Stellar 711a, identification data of registered persons entering and exiting is taken into the computer 4 in the next step 12&. At the same time, the person entering/exiting hand H is placed in a fixed position on the fixing device 1, and the handprint is taken by the television camera 2 (Step 11b), followed by analysis and feature extraction by the image processing device 3 (Step 12b). is executed. After that.

In step 13, the computer 4 compares and collates the identification data with the data passed through the image processing device 3, and in step 14, a judgment is made taking into account mutual tolerances.
t'M. Based on the result, the output device 5 displays acceptance or rejection of entry/exit. In this embodiment, the identification data is not just a single piece of information such as the length of the finger, but also the area of the finger. By using the added data in combination with the belief type data, identification accuracy can be further improved. In addition, according to the method of registering identification data using the computer 4, the number of 10,000 yen is 10,000 yen according to the method of registering identification data using codes and personal cards. As a result, entry and exit meetings were refused, and a thorough entry and exit management system was realized.
; has advantages. Furthermore, the registration method using a registration card also has the advantage that the storage capacity of the memory of the computer 4 is small. It should be noted that the present invention is not limited to handprints, but can utilize physical characteristics such as facial patterns and other body parts that differ significantly from person to person.

As described above, according to the present invention, an individual's handprint is photographed using a television camera, the video signal is digitalized by an image processing device, and then stored. In addition to extracting the physical characteristics of the artist as data, the identity of the two artists is determined by comparing and collating the data with pre-registered and embedded identification data on a computer, i.e. Since the identity of the individual is identified, unless the image-processed data matches the pre-registered identification number 1-1,
The identity of individuals will not be recognized, and if the documents are exchanged, there will be no room for third parties to engage in fraud such as plagiarism or forgery, and this will have the effect of ensuring a thorough access control system in terms of security.

Compared to fingerprints, voice, etc. that were used to identify Chikutomo Jubei.
'Besides, since it is possible to process numerical values such as length and area, the amount of time needed to identify individuals is relatively small, and the quality of the data is also excellent, making it possible to identify people entering and exiting in a short period of time. This method is extremely useful as a method for accurately identifying people.

[Brief explanation of drawings]

Figure 1 is a configuration diagram of the personal identification device used in the present invention, Figure 2
FIG. 3 is an explanatory diagram of the fixing device, FIG. 3 is a perspective view for extracting data, and FIG. 4 is a flowchart in the present invention. 1... Fixed device, 2... TV camera, 3... Image processing device, 4... Computer, 5... Output device, 11a, 11
b , 12 a , 12 b , 13 , 14
, 15--...Step patent applicant Japan Electronics Co., Ltd.

Claims (1)

[Claims] Photographing an individual's handprint, etc. with a television camera, digitizing and storing the video signal of this television camera, and
A computer extracts data on an individual's physical characteristics, such as finger length and area, from the stored video signal, and extracts data on the individual's physical characteristics, such as finger length and area, that have been previously stored or read into the computer. A personal identification method using image processing for handprints, etc., characterized in that identification data and the data are compared to determine the identity of both data.