JPS6290779A - Individual identifying system - Google Patents

Abstract

PURPOSE:To correctly and rapidly manage entrance/exit by measuring a time from a start of every horizontal scanning to a profile to extract an outline, collating a value measured when a person enters and goes out of a specific place and a value previously registered in a collating device and permitting the entering and going out if the value is situated within a set allowable value. CONSTITUTION:When a passer himself designates an identified person by inputting an ID card through a cipher or supplying a registration card, the identification data of the passer registered in a collating device 4 is fetched making a position of a horizontal scanning start of a time shared scanning line by a video input device 2 a reference value, a time to the position to a profile line is obtained from the number of counts, for instance by synchronizing a counter start time with the horizontal scanning start time and the profile line succeeding to the forehead, the eye, the nose, the mouth, the jaw or the like having a characteristic of the individual is measured by an outline signal processing device 3. Then, the comparison and the collation of the identification data and the face data are performed in the collating device 4, passing a decision considering an allowable error between the data, and as a result, an accept ance of a rejection of entrance/exit is displayed on an output device 5.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a personal identification system, and more particularly to a system for controlling the entrance and exit of a person using characteristics of the person's profile.

(Prior art) Conventionally, methods for controlling the entrance and exit of people at the entrances and exits of important facilities include the trust card method using 10 cards such as magnetic cards, the method using artificial arrangements such as encryption codes, etc. There are methods that use personal identification such as seals and identification cards, and methods that use physical characteristics unique to each person such as fingerprints, voice, retina, and signatures.

(Problems to be Solved by the Invention) However, with the 10-key code system, methods that use code codes, seals, etc., there is a risk that these may be stolen, forged, or lost, and it is difficult to identify individuals using fingerprints, etc. In general, a large amount of information is required, and the identification process takes time, making it extremely difficult to identify people entering and exiting in a short period of time.

Additionally, the determination of whether the photo attached to an ID card is the same as the person carrying the ID is done manually, but this manual method depends on when the photo was taken and the quality of the photo. This method is not suitable for managing the entrance and exit of a large number of people because it becomes difficult to judge and it takes a considerable amount of time to process the judgment.

The present invention has been proposed in view of the above points, and its purpose is to add to the conventional ID card method and code code method a profile that is continuous to the forehead, eyes, nose, mouth, chin, etc. of a person's face. By processing and identifying the physical characteristics of individuals using a video input device such as a television camera, a contour signal processing device, a matching device, etc., the disadvantages of the above conventional methods can be overcome and accurate and quick methods can be used. This provides an access control method that includes personal identification using profile data processing that enables access control.

(Means for Solving the Problems) That is, in order to achieve the above object, the present invention solves the problem by controlling the start of every horizontal scan of a video signal of a profile, which is a shape feature of a person, obtained by a television camera. The profile of the person's profile is extracted by measuring the time from If the value is outside the allowable range, entry or exit is permitted, and if the value is outside the allowable range, entry or exit is denied.

(Function) Normally, when a person's face is viewed from the front, the position, shape, unevenness, etc. of the forehead, eyebrows, eyes, mouth, nose, chin, and other components that make up the appearance of the face vary depending on the individual's characteristics. However, when obtaining this information from an input device such as a television camera, it is difficult to obtain information such as the brightness of the lighting, the direction of the face at the time of withdrawal,
It is extremely susceptible to the influence of input devices, etc., and it is extremely difficult to extract it as an individual characteristic.

In consideration of the above points, the present invention pays attention to the profile of a person, as each person has sufficient individual characteristics, and performs individual identification based on the profile.

In other words, the image of the profile of a person entering or exiting a specific location is input using a television camera, etc., and processed electronically.The image is compared with pre-registered identification data, and if it matches, entry or exit is permitted. That's what I do.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

Fig. 1 is a configuration diagram of a personal identification device used in the present invention. In the figure, 1 is a device for specifying an identified person by registering in advance, and includes an ID card device, an encryption code device, etc., and these are used for entrance/exit management. It is a confirmation device. Further, reference numeral 2 is a video input device mainly including a television camera for capturing the profile of a person entering or exiting a certain place and obtaining an electrical signal. The profile line that is continuous with the forehead, eyes, nose, mouth, chin, etc., which have individual characteristics, can be obtained as an image of contrast with the background by considering the color and lighting of the background. Reference numeral 3 denotes a signal processing device that extracts the outline of a profile line, which is a feature of an individual on the screen obtained from the video input device 2, using time-divided scanning lines and a mouth using the number of scanning lines.

The outputs of the identifier specifying device 1, the contour signal processing device 3, etc. are applied to the matching device 4 via an appropriate interface. The verification device 4 stores the identification data of the profile lines of all persons permitted to enter and exit in the ROM.

The identification data is stored in advance in a memory such as a RAM, and when the profile of the person's face is captured by the video input device 2 at the time of entering and exiting, the identification data is read out by input using the ID card or code unique to the person entering and exiting, and is processed by contour signal processing. The authenticity of the person entering and exiting can be determined by comparing it with the data sent by the device 3, or the identification data is stored in the form of residual magnetism in an ID card, for example, and the profile line is measured at the time of entering and exiting. The identification data is temporarily stored in the collation device 4 through an appropriate reading device, and then the identification data and the data sent through the contour signal processing device 3 are compared and discriminated to determine whether the person entering or exiting is authentic. Configure.

In addition, an output device M5 is connected to the verification device 4 via an interface as appropriate, and the output device 5 displays the verification results of the discrimination data in print or the like, and also controls the opening and closing of entrance/exit doors as necessary. is configured to do so.

FIG. 2 is a flowchart showing the flow of processing according to this method. In step 21, as described above, the person entering and exiting enters his or her own ID card or code, or supplies a registration card, and the identification person is designated. Based on the lever step 21, in the next step 22, the collation device @4
Identification data of people entering and exiting registered in the system is imported. At the same time, the contour signal processing device 3 measures the profile line of the person coming in and out, which is continuous with the nod, eyes, nose, mouth, chin, etc., which are characteristic of the individual, and becomes class data in step 23. After that, in step 24, the identification data and the similar data are compared and collated by the collation device 4, and after passing through the judgment step 25, which takes into account the mutual tolerance of the data, the step of accepting or rejecting entry/exit based on the result. 26 is displayed by the output device 5.

FIG. 3 shows an example of a screen configuration based on a video signal from the video input device 2 in the contour signal processing device 3.
1 is an example in which scanning lines are taken in the horizontal direction and moved in the vertical direction, and in the standard black and white television system, the number of scanning lines is 525.
The horizontal sync pulse frequency is 15,750 Hz, and the vertical sync pulse frequency is 601-12.

And one image is the first field (1G, yes
) and the second field (16,71118), the scan line 32 is divided into two images by the first field (16,71118).
2.5 bottles.

The second field contains 262.5 lines, and scanning is performed alternately. Also, the horizontal scanning period is 63
．． It is 5 μs.

FIG. 4 shows the profile of a person photographed by the video input device 2, and it is assumed that the profile line 41 has sufficient contrast with the background. Therefore, the time-divided scan line 42
For example, by synchronizing the counter start time and the horizontal scanning start time and using the horizontal scanning start position as a reference value, the time to the position of the profile line can be determined from the count number.

Here, the size of one screen is vertical V (m layers) and horizontal H (Im)
, and the length 43 of the profile line 41 from the eyes to the chin is h
(n+m), when the nose height 44 is w (mm),
The distance from the eyes to the chin 43 is the number of scanning lines on one screen x -, and the height of the nose 44 is the maximum horizontal scanning line on the counter, and the horizontal length of the screen is Since H(n+m), H(11
11) Can be measured with an accuracy of □.

Among the profile lines measured in this way, for example, the profile line from the forehead to the chin, which is an effective part of an individual's characteristics, is detected and the area of difference when superimposed with the pre-registered profile line data. Individuals can be identified by setting an appropriate threshold for this.

(Effects of the invention) In the conventional access control using the 10-code system or the personal code system, it is extremely difficult to deny access if the access is misused by someone who is not authorized to enter or exit. However, according to the method of the present invention that utilizes the characteristics of an individual's profile, entrance and exit control is performed through observation using a television camera, etc., so the burden on people entering and exiting is reduced, and the process can be completed in a short time. Since it can be processed, it has the effect of being particularly suitable for access management in which personal identification of a large number of people coming in and going out is 8-indented.

[Brief explanation of drawings]

Figure 1 is a configuration diagram of the personal identification device used in the present invention, Figure 2
The figure shows a flowchart 1 according to the present invention, FIG. 3 shows an example of a screen configuration based on a video signal obtained from a video input device, and FIG. 4 shows a profile of a person photographed by the video input device. 1...Identifier designation device, 2...Video input device,
3...contour signal processing device, 4...verification device, 5
...output device, 21, 22, 23, 24, 25.2
6...Step, 31...Screen, 32...
Scanning line, 41... Profile line, 42... Length from reference value to profile line, 43... Length from eye to chin,
44... Nose height and 1 other person - Figure 1 Figure 2 Figure 3 Translation of 1llil Figure 4

Claims (1)

[Claims] The outline of the profile is extracted by measuring the time from the start of each horizontal scan to the profile of the person's profile, which is a shape characteristic of the person obtained by shooting with a television camera, and the person is moved to a specific location. The system compares the values measured at the time of entry and exit with the values registered in the verification device in advance, and if it is within the set tolerance value, entry is permitted, and if it is outside the tolerance value, entry is denied. Personal identification method used.