JPH01193823A - Photographing device for id card - Google Patents

Abstract

PURPOSE:To judge whether or not an object blinks by providing means for storing the data of the gradational image of the object synchronously with photographing and for directly displaying it. CONSTITUTION:The above device is provided with a television camera 21, an image data storage device 22 and a display device 23. Namely, the television camera 21 shoots the gradational image of the object 13 synchronously with the shooting by a camera 12. By synchronously shooting it, an image signal having a timing nearly same as the image shot by the camera 12 can be obtained. The image data storage device 22 stores the image signal shot by the television camera 21 in a field memory, etc., as the data of a frame image or the signal thereof just after photographing. The storage of the data of image is turned to a composite signal including the synchronizing signal of the image of television. The display device 23 directly reproduces the data of stored image or the signal thereof read out from the image data storage device 22 and displays it on a display unit. Therefore, whether of not the object 13 blinks can be confirmed from the displayed image on the display device 23.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an ID card photographing device that records a gradation image of a subject such as a human face and related text and graphics.

Background of the Invention - An ID card photographing device is configured as shown in FIG. The housing 11 has a camera 1 with a shooting window on the front.
2 is built-in, and this camera 12 is controlled by a remote control to take frame-by-frame gradation images of a subject 13 sitting on a chair in front of the camera. , 14 is a background panel. A strobe device 15 is provided in the upper part of the housing 11, and strobe light emission is controlled in synchronization with the photographing control of the camera 12 to generate the subject brightness necessary for photographing. Note that the character and graphic information is obtained by data imprinting using a character and graphic information exposure device (not shown) provided in the housing 11 or the camera 12. A photosensitive material (for example, a direct positive photosensitive material) having a gradation image of a subject 13 photographed by a camera 12 and a character and graphic information exposure device or a character and graphic image imprinted by a camera is stored in a developing processing device 1 in a housing 11.
6, and after being subjected to a well-known processing step by the developing processing device 16, it is taken out as an ID card sheet 17.

Problems to be Solved by the Invention - In conventional ID card photographing devices, there are cases where the subject blinks when photographing, and especially in photographing situations that require strobe light, it is easy for the subject to blink due to the flash; If you blink, the shooting will fail.

Conventionally, therefore, a photographing operator checks whether or not the subject has blinked during photographing, and when it is determined that the subject has blinked, re-photographing the subject is performed. but,
Blink judgment requires skill, and especially when photographing with strobe light, it becomes difficult to visually see the situation of the subject exposed to the flash, and this increases the fatigue of the photographing operator.

In addition, there is a problem in that incorrect judgment of blinking results in photographing errors. For example, if you mistakenly believe that you have blinked when you did not blink, re-photographing results in wasted photosensitive material and an increase in photographing time. On the other hand, if you make the mistake of not blinking even though you blinked, you will only notice this error after the processing device has completed the prescribed processing steps, so the subject is often not present at that time and you will not be able to retake the photo. Sometimes.

SUMMARY OF THE INVENTION An object of the present invention is to provide an ID card photographing device that makes it possible to reliably and easily determine whether or not a subject has blinked during photographing.

Means and Effects for Solving the Problems - In order to achieve the above object, the present invention provides an ID card photographing device that photographs a gradation image of a subject together with text and graphic information, in which the subject is photographed in synchronization with the photographing. Equipped with a photographed image confirmation means for storing and immediately displaying gradation image data,
To store photographic data of a subject image at almost the same timing as an image photographed by a camera, and to immediately obtain a display of this stored image, thereby making it possible to determine whether or not there is blinking from the displayed image immediately after photographing.

One Embodiment - FIG. 1 is an apparatus configuration diagram showing one embodiment of the present invention. The difference between this figure and FIG. 13 is that a television camera 21, an image data storage device 22, and a display device 23 are provided as photographed image confirmation means. The television camera 21 photographs a gradation image of the subject 13 in synchronization with the photographing by the camera 12. With this synchronized ti shadow, an image signal having almost the same timing as the image taken by the camera 12 is obtained. The image data storage device 22 stores the image signal taken by the television camera 21 in a field memory, magnetic disk device, magnetic tape device, etc. as frame image data or signals immediately after the image is taken. This image data is stored in a composite signal including a synchronization signal of the television image. The display device 23 has a display such as a CRT or a liquid crystal display and its display control device, and immediately reproduces stored image data or signals read from the image data storage utility 22 and displays them on the display.

In such a configuration, when the camera 12 takes a picture, the image of the subject 13 is exposed to the film of the camera 12, and is also recorded on the image sensor of the television camera 21, and the recorded image signal of this image sensor is immediately transferred to the image data storage device 2.
2 and immediately displayed on the display device 23.

Therefore, the image of the subject 13 taken Ft2 by the camera 12 and the image of the subject 13 displayed on the display device 23 are almost the same images taken at almost the same timing, and this display device 2
From the display image No. 3, it can be confirmed whether the subject 13 has blinked or not. In order to confirm the presence or absence of blinking, the camera operator does not need to visually check the instantaneous blinks of the subject 13 in the flash state of the strobe device 15 during shooting, and continues to display the image to check the presence or absence of blinks. Make it possible to make decisions as arbitrarily and reliably as possible.

The configuration, control, and operation of each part will be explained in detail below.

(1) Structure of the installation of the TV camera 21 The camera 12 takes pictures with the subject 13 sitting on a chair, but it is equipped with functions for tilting up and down and swinging left and right depending on the sitting height of the subject 13. The face is adjusted so that it is located in the center of the screen. Therefore, the television camera 21 is structured to change the optical axis direction in conjunction with adjustment of the optical axis direction of the camera 12. For example, television camera 21 and camera 12
are mounted at the same height, with the center of each photographic lens at the same height.
It is provided on a support stand that is integrated with the camera 12, and the upper and lower sides are tilted the same amount by tilting the packing, and the swing angle of the camera 12 on the stand is made the same amount by sprocket drive.

In addition, the other mounting structure is such that the television camera 21 is provided above the strobe device 15 and is linked to the swinging and tilting of the camera 12. In this structure, since the television camera 21 is not located in front of the subject 13, there is an effect of eliminating inappropriate photography in which the subject 13's line of sight is directed toward the television camera 21.

Further, the other mounting structure is a TTL method in which the optical axis of the camera 12 and that of the television camera 21 are completely aligned. Figure 2 shows the basic structure of the imaging lens 2.
A half mirror 29 is provided in the optical path from 5 to the shutter 26, diaphragm 27, and film 28 surface.
The image of the subject 13 divided by 29 is formed on the light receiving surface of the image sensor 31 of the television camera 21 through the aperture 30.

Furthermore, as another TTL method, as shown in Fig. 3,
The image divided from the half mirror 29 is formed on a glass plate (frosted glass) 32 surface through an aperture diaphragm 30, and this image plane image is transmitted through a magnification adjustment lens 33 to an image sensor 31.
Form an image on a surface.

According to such a TTL method, by matching the parallaxes of both cameras and matching the photographed image and the confirmation image, it is possible to obtain a more accurate judgment of the photographing situation. Furthermore, by sharing a portion of the imaging lens 25 and the like, it is possible to downsize the apparatus.

(2) Image storage circuit of the image data storage device 22 The image data storage device 22 connects the television camera 22 to the television camera 22 in synchronization with the light emission of the strobe device 15 or the photographing operation signal, which is the X contact signal of the camera 12 or the contact signal of the shirt release button. Image storage is performed by freezing one or more screens of video images from a field memory. This basic configuration is the fourth
As shown in the figure, an NTSC signal from a television camera 21 is converted into a digital signal for each pixel by an A/D converter 35, and of this digital signal, a freeze signal synchronized with the light emission of the strobe device 15 is used. One screen is stored pixel by pixel in a field memory 36 having a RAM configuration. Then, when displaying an image on the display device 23,
The data stored in the field memory 36 is sequentially read out and D/
The A converter 37 converts the signal into an analog signal and sends it to the display device 23 as a video signal. FIG. 5 shows a time chart for synchronization with strobe light.

When the strobe device 15 emits light in synchronization with the X contact signal of the camera 12 for the vertical synchronization signal V5YHC of the NTSC signal and the composite signal, freezing for one screen period at this timing and in accordance with the vertical synchronization period. A signal is obtained and an image signal of this signal period is stored.

FIG. 6 shows an embodiment of the freeze signal generation circuit. In the figure, the photodiode 41 is connected to the strobe device 15.
The sense amplifier 42 detects the light emission and converts it into an electrical signal.
amplifies the output of the photodiode 41, and the comparator 43 compares the output of the sense amplifier 42 with the reference voltage V re
Detect and shape with f. With these circuits, the strobe device 1
A tri-force signal synchronized with the light emission of 5 is obtained. When such a trigger signal is generated from the X contact signal of the television camera 21 or the contact signal of the shirt release button, it can be obtained by adjusting the timing of the contact signal using an appropriate delay circuit.

Next, the synchronization separation circuit 44 controls the NTS of the television camera 21.
The vertical synchronizing signal V5YNC is separated and extracted from the C signal.

The D-type flip-flop 45 uses the output of the synchronization separation circuit 44 as a data input and reset input of the inverter 46, uses the trigger signal from the comparator 43 as a clock signal, and uses the next vertical signal from the trigger signal timing as shown in FIG. Obtain a pulse signal for the period up to the synchronization signal timing.

The D-type flip-flop 47 uses the output of the flip-flop 45 as a data input, uses the vertical synchronization signal as a clock signal, and freezes only during the next vertical synchronization period (one field period) following the trigger signal, as shown in FIG. Get a signal. This frozen state is maintained until the next strobe light emission, and blinking can be confirmed while the strobe image held in the image data storage device 22 continues to be displayed on the display device 23.

In the above embodiment, as shown by the broken line block, the trigger signal or appropriate switch operation signal passed through the timer 48 is set as input to the flip-flop 47, and the timer 48 causes the flip-flop 47 to switch from strobe light emission to the flip-flop 47 after the timer 48 has expired. can be forcibly set to release the freeze state. By making the addition of this function selectable with a switch, the image confirmation means according to the present invention can be used as a viewfinder. That is, when photographing with the camera 12, the flip-flop 47 is output from the timer 48.
It is possible to freeze and update one frame of the image signal from the television camera 21 at the timing when a set signal is given to the subject 13, and update and display the image on the display device 23.
It is possible to determine whether the posture of the subject 13, such as the inclination of the subject's face, is appropriate.For a more accurate posture check, a cross target is provided on the screen of the display device 23, and whether or not one eye of the displayed image of the subject 13 is positioned on this can be determined. It can also be determined by Furthermore,
A frame target is provided on the screen of the display device 23 and the subject 1 is
You can also check the shooting range for 3.

In addition to the viewfinder function described above, means is provided for switching the aperture amount of the aperture 30 of the television camera 21 when updating the frozen image using a trigger signal other than strobe light emission. That is, the amount of light received by the television camera 21 is large for strobe light emission during photography, and it is necessary to close down the aperture 30 of the television camera 21 to a large extent in accordance with the amount of light.

Therefore, if you use the viewfinder to update the image with the aperture of 2 at the time of shooting without flashing,
The exposure of the television camera 21 becomes insufficient, and the displayed image on the display device 23 also becomes dark, making it difficult to check its quality. Therefore, by setting the aperture 30 of the TV camera 21 so that it receives an appropriate amount of light when the strobe is not being emitted, and by reducing the amount of light received by the TV camera 21 when the strobe is being emitted, the aperture 30 of the TV camera 21 can be set so that the amount of light received by the TV camera 21 is reduced when the strobe is emitted. An image display of brightness can be obtained. Specific means for this are realized by making it possible to attach and detach a filter in the optical path of the television camera 21. For example, a mechanism for putting an ND filter in and out of the optical path using a rotary solenoid, a mechanism for putting an ND filter in and out of the optical path using a rotary solenoid, and
An element such as ZT whose light transmittance changes depending on the applied voltage is interposed in the optical path, and the applied voltage is switched.

The eighth embodiment is an example in which the above-mentioned light receiving amount switching function is provided.
As shown in the figure. In the figure, the output of the flip-flop 45 is input to two stages of cascaded D-type flip-flops 51 and 52, and the flip-flop 52 provides a vertical synchronization signal 5YNc to the clocks of these flip-flops 51 and 52.
The output is used as a freeze signal. With this configuration, as shown in FIG. 9, the generation of the freeze signal is delayed with respect to the timing of strobe light emission. By adding such a delay, a display image with appropriate brightness can be obtained both at the time of photographing and at the time of the viewfinder, without the need for a light receiving amount switching means. That is, the aperture amount of the television camera 21 is set so that an appropriate display brightness can be obtained when the strobe is not emitting light, and when the strobe is emitted in this state, the image becomes saturated when it freezes immediately after, as shown in Figure 10. However, if you delay the strobe firing by two or more cycles of the vertical synchronization signal, you can obtain a normal level image signal without the strobe effect, and by freezing at this delayed timing, the subject at the time of shooting A display image with appropriate brightness can be obtained regardless of the situation. Note that the delay time between the photographed image and the displayed image due to the addition of the delay is at most 1/60 seconds or less, and there is no problem in normal determination of the presence or absence of blinking.

Furthermore, the same effect can be obtained by using a configuration in which the frozen image is obtained immediately before the strobe light is emitted. For example, the first
This is realized by the configuration shown in FIG. In the same figure,
The flip-flop 45 is set when a trigger signal is applied, and is reset by the next vertical synchronization signal. Flip-flop 53 is flip-flop 45
It is reset by the reset output of , and set by the output of a timer 54 which obtains a delay of several times the vertical synchronization period from the trigger signal to generate a freeze signal. In this embodiment, as shown in FIG. 12, the viewfinder is always in the viewfinder state when the strobe is emitted, and the image data storage device 22 is always updated with images except for the delay time of the timer 54 after the strobe is emitted. When the light is emitted, the immediately previous image can be continued to be displayed for the delay time of the timer 54.

In the embodiments described above, the frozen image data is not only displayed on the display device 23, but can also be saved on a magnetic tape or floppy disk, which also functions as an image data input device for image filing. . Furthermore, the frozen image can be output to a hard copy recording device such as a thermal printer and saved as backup image data.

Effects of the Invention As described above, according to the present invention, since the photographed image confirmation means is provided which stores the gradation image data of the subject in synchronization with the ID camera photographing and immediately displays it, the subject does not blink when photographing. This has the effect of making it possible to make a reliable judgment while eliminating the need to visually observe the subject condition at the moment of photographing. In particular, this has the effect of reliably and easily determining whether or not the eye blinks when photographing using strobe light.

[Brief explanation of the drawing]

FIG. 1 is a basic configuration diagram of the present invention, FIGS. 2 and 3 are basic configuration diagrams showing the TTL method of the television camera in FIG. 1, and FIG. 4 is a basic configuration diagram of the image data storage device in FIG. 1. 5 is a time chart of the image data storage device, FIG. 6 is a freeze control circuit diagram of the image data storage device,
Fig. 7 is the time chart of Fig. 6, Fig. 8 is another freeze control circuit diagram of the image data storage device, Fig. 9 is the time chart of Fig. 8, and Fig. 10 is the strobe light shooting in Fig. 8. 11th time chart showing the image recording state of
This figure is another freeze control circuit diagram of an image data storage device, FIG. 12 is a time chart of FIG. 11, and FIG. 13 is a configuration diagram of a conventional photographing device. 12... Camera, 15... Strobe device, 16...
・Development processing device, 21...TV camera, 22...
Image data storage lid, 23... Display device, 31...
Image sensor, 36... Field memory, 44... Synchronization extraction circuit, 48... Timer, 54... Timer. Patent applicant: Konica Co., Ltd. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1) I photographing a gradation image of a subject together with character and graphic information
What is claimed is: 1. An ID card photographing device, characterized in that the ID card photographing device comprises a photographed image confirmation means for storing gradation image data of the subject in synchronization with the photographing and immediately displaying the photographed image data. 2) The ID card photographing device according to claim 1, wherein the gradation image is photographed by a strobe type camera, and the photographed image confirmation means stores the gradation image data in synchronization with strobe light emission or a photographing operation signal. 3) The ID according to claim 1 or 2, wherein the photographed image confirmation means includes means for displaying a subject image before or after flashing a strobe light.
Card photography device.