JP2002281441A - Photographing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable high speed image processing with high accuracy. SOLUTION: A photographing device 1 for photographing an object 3 located in a photographing box 2 is provided with an illuminating means for illuminating the object with stroboscopic light, an image photographing means for photographing the object, and an image processing means for converting a JPEG(joint photographic experts group) image obtained by photographing the object into a BMP(bit map) (RGB(red green blue)) image and outputting the BMP (RGB) image. The image processing means adjusts luminance, saturation and density when the image processing means converts the JPEG image into the BMP (RGB) image.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for taking a photograph for obtaining a print used for a driver's license, an identification card, a passport, and the like.

[0002]

2. Description of the Related Art In such an ID photographing apparatus, a user enters, for example, a box-shaped photographing box, sits on a chair in the photographing box, and the user himself or an operator presses a photographing button. A print of a plurality of images recorded on a sheet-shaped recording medium of a predetermined size is obtained by photographing the upper body of the user.

[0003]

As described above, when a subject located in a box-shaped photographing box is photographed and printed, the JPEG image is converted into a BMP (RGB) image, and after this conversion, the RGB data is converted. And the printer output is performed, the conversion accuracy is lowered, the image quality (gradation, the number of colors) is reduced, the conversion speed is increased, and the printing time is increased.

[0004] The present invention has been made in view of the above points, and has as its object to provide a photographing apparatus capable of high-speed, high-accuracy image processing.

[0005]

Means for Solving the Problems In order to solve the above problems and achieve the object, the present invention has the following constitution.

According to the first aspect of the present invention, there is provided a photographing apparatus for photographing a subject located in a photographing box, comprising: an illuminating means for illuminating the subject with strobe light; an image photographing means for photographing the subject; JPEG obtained by photographing
Image processing means for converting an image into a BMP (RGB) image and outputting the converted image, wherein the image processing means adjusts luminance, saturation, and density when converting the JPEG image to the BMP (RGB) image. An imaging device characterized by the above-mentioned. ].

According to the first aspect of the present invention, a BMP (RG) is obtained from a JPEG image obtained by photographing a subject.
B) At the time of conversion into an image, high-speed, high-precision image processing is possible by simultaneously adjusting brightness, saturation, and density.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a photographing apparatus according to the present invention. 1 is a side view of the photographing device, FIG. 2 is a front view showing an indirect lighting device arranged below, FIG. 3 is a block diagram showing a schematic configuration of the photographing device, and FIG. 4 is a sectional view of a photographing unit.

A photographing apparatus 1 according to this embodiment is a photographing apparatus for photographing a subject 3 located in a box-shaped photographing box 2. The inside of the photographing box 2 is divided into a photographing room 5 and a device room 6 by a front panel 4.

In the photographing room 5, a chair 10 is provided on the floor 2a of the photographing box 2. The subject 3 sits on the chair 10 and photographs the face of the subject 3.

In the photographing room 5, indirect lighting devices 11 and 12 are provided.
Are provided on the floor 2a on both left and right sides of the chair 10 and the light emitting units 11a and 12a of the indirect lighting devices 11 and 12
0 is located at a position lower than the seat surface 10a. The light emitting units 11a and 12a of the indirect lighting devices 11 and 12 are located at a position H which is one third or less of the ground height H1 of the subject center O1.
2, H3. This indirect lighting device 11, 1
The two light emitting units 11a and 12a emit light toward the front panel 4, and the front panel 4 serves as a reflection surface so that indirect light hits the subject 3 from the front side.

Above the chair 10 is an indirect lighting device 13.
Are provided on the rear wall 2b of the photographing box 2. The light emitting unit 13a of the indirect lighting device 13 irradiates the ceiling 2c of the imaging box 2 toward the ceiling 2c, and the ceiling 2c serves as a reflection surface so that the indirect light hits the subject 3 from above.

An indirect lighting device 14 is provided on the ceiling 2c at a position in front of the subject center O1. The light emitting portion 14a of the indirect lighting device 14 irradiates the light toward the ceiling 2c, and the ceiling 2c and the entire panel 4 become reflection surfaces,
The indirect light hits the face of the subject 3 from above.

An indirect lighting device 15 is provided on the front panel 4 at a position above the chair 10 on the front side. The light emitting section 15a of the indirect lighting device 15 irradiates the light toward the reflecting surface 15b, and the indirect light reflected by the reflecting surface 15b is further reflected by the ceiling 2c and hits the face of the subject 3 from the front. I have.

In the apparatus room 6, a photographing section 20, which is an image photographing means for photographing the subject 3, a lighting control section 21, a Billbury coin mech 22, a user input section 23, a printer section 24 and a control section 25 are arranged. ing.

The photographing section 20 includes a digital camera 200,
It is arranged in the mirror box 201. The digital camera 200 has a CCD 200a, and a focus defining lens 202 and a filter 203 having a dimming function are arranged in front of the CCD 200a. Focusing lens 202
Uses a close-up lens.

The mirror box 201 is provided with a front glass 204 at a position facing the subject 3. Light from the front glass 204 is guided to the CCD 200 a of the digital camera 200 via the half mirror 205, the filter 203, and the focus defining lens 202, and the digital camera 2
00 captures the subject 3 and outputs a face image of the subject 3 as an image signal.

The filter 203 comprises a filter driving means 24
It is moved by 0 and intervenes in the photographing optical path at the time of photographing. The filter driving means 240 is controlled by the filter controller 206.

In order to minimize the influence of external light and the like and to always obtain a stable image, the illumination of the indirect illumination devices 11, 12, 13, 14, 15 constituting the illuminating means for illuminating the subject 3 at the time of photographing is GN60. This is performed with an approximate value of strobe light. In a normal digital camera, halation occurs when the light amount is too high.

A mirror box 201 is attached to the monitor box for synthesizing the monitor image.
The image is disturbed by irregularly reflected light inside 01.

For this reason, an ND filter 203a and a PL filter 203b are mounted as the filter 203 in order to prevent halation due to an excessively high light amount and to prevent image disturbance due to irregularly reflected light. When displaying a live image, the image is confirmed by the weak light of the fluorescent lamp, so that the ND filter 203a and the PL filter 2
With 03b attached, the amount of light reduction is too high to check the live image.

For this reason, the filter driving means 240 is controlled by the filter controller 206 to rotate and move the ND filter 203a and the PL filter 203b for each unit, and to display a moving image without a filter when displaying a live image. I have. Further, the ND filter 203a and the P
When the L filter 203b is not in the photographing optical path and is released, a frame indicating a proper face position range is displayed by a superimpose method using a frame memory circuit.

An image of the subject 3 captured by the digital camera 200 is displayed on a television monitor 207, and the image of the subject 3 can be viewed by a user via the half mirror 205. The digital camera 200, the filter controller 206, and the television monitor 207 are controlled by a shooting control unit 208.

As described above, when the moving image of the face of the subject 3 is displayed on the television monitor 207 before photographing, the filter 203 is not interposed in the photographing optical path without driving the rotary solenoid 204a. Can be displayed on the television monitor 207 in a bright and easy-to-view moving image. When the face of the subject 3 is photographed, the subject 3 is photographed by driving the rotary solenoid 204a so that the filter 203 is interposed in the photographing optical path and dimming the photographed image. Can be obtained. The filter driving means 240 of this embodiment has a simple structure by a mechanical operation, and has an ND filter 203a and a PL filter 203b.
Can be moved to be interposed in the photographing optical path.

The illumination control unit 21 includes a strobe unit 21
0, having a synchro unit 211, synchronized with the shutter,
Light-emitting part 1 of indirect lighting devices 11, 12, 13, 14, 15
1a, 12a, 13a, 14a, and 15a emit light.
The light emitting units 11a, 12a, 13a, 14a, and 15a include:
Illumination is performed by strobe light using a xenon flash.

The Ballybury coin mech 22 is attached to the front panel 4, sends an imaging permission signal to the control unit 25 when a coin is inserted, and collects a preset fee.
If the input amount is large, a change is issued. A receipt is also issued at the Billbury Coin Mech 22.

The user input section 23 is for remotely controlling the apparatus, and is provided with a form selection button 230, an imaging button 231, an image display button 232, and a print button 233. This user input unit 23
Connected to control unit 25.

The printer section 24 performs printing based on image signals obtained by the CCD camera 200 under the control of the control section 25. In this embodiment, by superposing the recording material and the image receiving material and applying heat,
A thermal transfer recording system in which an image is formed by transferring a recording layer of a recording material to an image receiving layer of an image receiving material is used. In this embodiment, a sublimation type video printer is used.

The control unit 25 has a USB (Universal Serial Bus) 250, a DVD 251, an I / O controller 252, a SCSI interface (I / F) 253, and a memory 254.
It controls the Billbury coin mech 22 and the printer unit 24.

The DVD 251 is a recording medium of a digital recording system, and stores moving image information for explaining how to use the photographing apparatus of the present invention. The moving image for explaining how to use is displayed on the television monitor 207 as necessary. . CCD camera 20
The subject 3 is photographed according to 0, and the image information of the subject image is recorded. The I / O controller 252 exchanges information with the strobe unit 210 of the lighting control unit 21, the Bilberry coin mech 22, the user input unit 23, and the photographing control unit 208 to perform control. The SCSI interface (I / F) 253 sends image information to the printer unit 24 at high speed. The memory 254 temporarily stores image information captured by the CCD camera 200.

In this embodiment, in order to minimize the influence of external light and the like and always obtain a stable image, the illuminating means uses strobe light for photographing illumination. The strobe light has a high color temperature of about 6000K, and the irradiation time is about 1 /
Since it is as short as 10000 seconds, it is difficult to obtain a white balance due to the structure of the CCD 200a, and the digital camera 200 is adapted to cover the entire surface of the strobe with a color temperature conversion shield.

By the way, if the strobe light is used as it is in the reflection in the shooting box 2 and the yellow level correction is performed in consideration of the color conversion to the output image from the digital camera 200, the dynamic range for each color temperature of the image cannot be effectively obtained. Poor color stability is found in the intermediate density portion (particularly in the density region near the face image).

When an extremely high amount of strobe light is used to minimize the influence of external light and the like, the ND filter 203a and the PL filter 203b are mounted to prevent halation. As
Since the problem that the saturation of the captured image is lowered occurs, a JPEG obtained by photographing the subject 3 is
An image processing unit for converting an image into a BMP (RGB) image and outputting the image is provided. When converting a JPEG image into a BMP (RGB) image, the brightness, saturation, and density are adjusted.

In this embodiment, color management is performed in order to obtain a target color direction without sacrificing the gradation as much as possible. The image captured from the digital camera 200 is JPEG-compressed, and is converted into a BMP (RGB) image by the image processing means of the control unit 25.
When converting to an (RGB) image, the luminance, saturation, and density of the input image are adjusted.

This conversion is based on the JPEG color parameters (Y,
Cr, Cb) using standard conversion parameters
(RGB) is converted into a color parameter.

The standard conversion parameters are Y IY + (ICr-0x80) ^* (91881) R Cr IY- (ICb-0x80) ^* 22550- (ICr-0x80) ^* (46786) G Cb IY + (ICb-0x80) ^* 1366116 B.

An example of the conversion parameter of this embodiment is: Y IY + (ICr-0x80) ^* (131881) R Cr IY- (ICb-0x80) ^* 14550- (ICr-0x80) ^* (32786) G Cb IY + (ICb −0 ^× 80) ^* 156166B.

As described above, since the color conversion is performed inside the algorithm (luminance, saturation, density> red element, green element, blue element) at the time of format conversion, the conversion order is high and the gradation loss is small. In addition, there is an advantage that the speed is increased because the process is completed in one process. A resize / layout is performed on the image on which the image processing has been performed.

In this embodiment, a JPEG file generated by the digital camera 200 is used as a basic image file, and a display JPEG decoder program and a print output-based JPEG decoder program are used together.

The display-based JPEG decoder program generates a simplified display file by rounding off the decimal point at the time of low-frequency image restoration calculation, and has a high conversion speed (2).
MB file about 4 seconds).

The print output-based JPEG tecoder program allocates four bits to the decimal point when restoring a low-frequency image to generate a high-definition image file. The decoded image is clear and the conversion speed is high (2 MB). File 6 seconds), decoded image is WindowsBM
The file is treated as P, and reduced layout is performed based on this file.

[0042]

As described above, according to the first aspect of the present invention, a BM is obtained from a JPEG image obtained by photographing a subject.
By simultaneously adjusting the luminance, saturation, and density when converting to a P (RGB) image, high-speed, high-precision image processing is possible.

[Brief description of the drawings]

FIG. 1 is a side view of a photographing device.

FIG. 2 is a side view showing an indirect lighting device arranged below.

FIG. 3 is a block diagram illustrating a schematic configuration of a photographing device.

FIG. 4 is a sectional view of a photographing unit.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 shooting device 2 shooting box 3 subject 4 front panel 5 shooting room 6 device room 10 chairs 11, 12, 13, 14 indirect lighting device 20 shooting unit 21 lighting control unit 24 printer unit 25 control unit 200 digital camera 207 TV monitor

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 7/18 H04N 5/91 H 5C055 9/79 9/79 H (72) Inventor Koichi Iwata Hino, Tokyo No. 1 Sakura-cho, Konica, Japan (72) Inventor Shinsuke Funaki No. 1, Sakura-cho, Hino-shi, Tokyo F-term (reference) 2H104 AA19 BC48 5C022 AA13 AB15 5C052 FA02 FA03 FC06 FD13 FE01 5C053 FA08 GA11 GB36 HA33 LA03 5C054 AA01 CA04 CB04 CC02 CD03 CE16 CG02 CH02 EA01 EA05 EA07 EB05 ED07 EE06 EH07 EJ07 FB03 GA04 GA05 GB02 GC03 GD03 HA23 HA33 5C055 AA14 BA03 BA06 FA22 GA09 HA18

Claims (1)

[Claims] 1. A photographing apparatus for photographing a subject located in a photographing box, comprising: illuminating means for illuminating the subject with strobe light; image photographing means for photographing the subject;
Image processing means for converting an EG image into a BMP (RGB) image and outputting the converted image, wherein the image processing means converts the JPEG image into a BMP (RGB) image.
B) A photographing apparatus characterized by adjusting luminance, saturation, and density when converting into an image.