JP2002344775A - Illumination method, illuminator, display method, display device and photographing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology which can generate illumination light which is not photographed by a television camera. SOLUTION: In the illumination method emitting an illumination light to an object at photographing, the object is photographed synchronously with a reference synchronizing signal and the illumination light is emitted between the capturing of the photographed object image and the capturing of succeeding object image.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographing system and, more particularly, to a technique effective when applied to a photographing assisting apparatus for displaying information to a performer in producing a television program or video.

[0002]

2. Description of the Related Art Conventionally, at a shooting site such as a television studio, in order to instruct each performer in a position where each person stands,
Markers such as tapes were installed on the floor in advance, and each performer moved to each standing position using the marker attached to the floor as a guide.

[0003] However, in a system in which a marker such as a tape is provided on the floor surface to instruct a performer in a standing position, there is a problem that the marker itself is reflected on a television camera. Also, with this method, if there are multiple markers, the performer may misidentify the standing position,
There was a problem that the marker itself could not be confirmed under dark conditions. When the marker is installed using a tape or the like, it is difficult to change the position, and there is a concern that the set may be soiled or damaged.

[0004] As a method for solving this problem, there has been a long-awaited demand for a method of using a non-contact type marker such as illumination light as an information display medium. As such a method, for example,
As a photographing technique using a camera using a film such as a movie camera, there has been a position display system using an unexposed time of a film camera. In this position display system, there has been a method in which an intermittent laser is irradiated from a laser device within a non-exposure time of a film camera, and an irradiation position of the laser light is used as a marker position, thereby indicating a standing position of a performer.

[0005]

SUMMARY OF THE INVENTION As a result of studying the above prior art, the present inventor has found the following problems. In the conventional method of irradiating an intermittent laser with a non-exposure time of a film camera, the irradiation range of the laser beam that indicates a position as a marker is a point, so it is possible to display a position in a narrow range such as on a desk. However, when irradiating a wide area such as the floor surface of a television studio, the irradiation area was small and it was difficult to confirm it as a marker. Furthermore, since a normal television camera does not have a non-exposure time unlike a film camera, there has been a problem that the intermittent light cannot be used as an information display medium when photographing with the television camera. For this reason, there has been a keen demand for a technique for preventing illumination light having excellent visibility from being reflected on a television camera.

[0006] Further, ordinary illumination light has an adverse effect on a photographed image, and is unsuitable as an information indicating medium.

[0007] On the other hand, at a shooting site such as a live broadcast, in order to transmit information such as instructions from the production and remaining time to the performers,
Until now, the assistant director wrote the instructions and remaining time in sketchbooks and the like, and showed them to the performers.

[0008] However, the information display from the production using a sketchbook or the like has a problem in that the performer must move his / her eyes and face to confirm the appearance, which makes the viewer look unnatural. . Furthermore, when the performer's eyesight is poor or when the distance between the performer and the fixed position of the information is large, the written characters cannot be read. For this reason, there has been a long-awaited demand for a method of displaying characters naturally in the direction of the performer's eyes and clearly displaying characters and the like.

An object of the present invention is to provide a technique capable of generating irradiation light which is not photographed by a television camera.

It is another object of the present invention to provide a technique capable of freely moving the position of a marker even during photographing, and instructing only when necessary.

The above and other objects and novel features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

[0012]

SUMMARY OF THE INVENTION Among the inventions disclosed in the present application, the outline of a representative one will be briefly described.
It is as follows.

(1) In an illuminating device for irradiating a subject with illumination light at the time of photographing, the photographing is performed in synchronization with a reference synchronizing signal, and the above-described photographing is performed between the capture of a captured subject image and the capture of the next subject image. A means for irradiating illumination light is provided.

(2) In an illumination device for irradiating a subject with illumination light at the time of shooting, the shooting is performed in synchronization with a reference synchronization signal, and the shooting period is determined based on the reference synchronization signal and the shooting period of the shooting. A means for irradiating the irradiation light during the period excluding is provided.

(3) In the lighting device described in (1) or (2) above, the photographing is performed by dividing one field period into a photographing period and a non-photographing machine.

According to the above-described means, for example, the non-exposure time can be created in the television camera by performing photographing using the shutter function of the television camera of the CCD system. Therefore, using a reference synchronization signal from a television camera or a studio, an intermittent light to be emitted in a cycle synchronized with the reference synchronization signal is created, and the irradiation time of the intermittent light and the irradiation timing for the reference synchronization signal are controlled. By using an illumination device that irradiates only during the non-exposure of the TV camera or a transmission device of illumination light that transmits only during the non-exposure of the TV camera, it is possible to generate intermittent light that is not reflected on the television camera.

The intermittent light that is not reflected on the television camera can be used as an information display medium as a marker for displaying the standing position of the performer. Also,
A personal computer connected to the projector, using the above-mentioned intermittent light for the projection light itself of the projector, or using a transmission device that transmits the projection light of the projector only while the TV camera is not exposed, to make it intermittent light that does not appear on the TV camera. Is illuminated on the performer's eye wall. As a result, the performer can naturally confirm the instructions from the production, etc., which are immediately entered by a personal computer or the like without greatly changing his / her eyes.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings together with embodiments (examples) of the invention. In all the drawings for describing the embodiments of the present invention, components having the same functions are denoted by the same reference numerals, and their repeated description will be omitted.

(Embodiment 1) FIG. 1 is a diagram for explaining a schematic configuration of a photographing system according to Embodiment 1 of the present invention. In particular, the illumination device in the imaging system of the first embodiment directly controls light emission of the light source. However,
In FIG. 1, the television camera for photographing according to the first embodiment is a television camera with a well-known shutter mechanism, and a detailed description thereof will be omitted. However, as described below,
In the imaging system according to the first embodiment, the illumination from the light source is controlled based on the reference synchronization signal from the television camera or from the outside. Therefore, when two or more television cameras are used, A so-called external operation is performed in which all the television cameras operate in conjunction with the reference synchronization signal. In the following description, a case will be described in which a television camera and a lighting device (not shown) included in the imaging system according to the first embodiment operate in synchronization with a known external reference synchronization signal (not shown).

The photographing system shown in FIG. 1 synchronizes a television camera with a well-known shutter mechanism (not shown) with an external reference synchronizing signal to supply and stop power supplied to the 103 light source, that is, turn on and off the light source 103. Voltage dimming control unit 101 for controlling the power supply,
3 includes a light control unit 102 that adjusts the amount of power by adjusting the amount of power when the light is turned on, and a light source 103 that emits light at a light amount corresponding to the amount of power from the light control unit 102. In the imaging system according to the first embodiment, the voltage dimming control unit 101, the dimming unit 102, and the light source 103 form an illumination device.

In the photographing system shown in FIG. 1, the voltage dimming control unit 101 operates using an external reference synchronizing signal as a control reference similarly to the television camera. In particular, in the first embodiment, the voltage dimming control unit 101 sets one cycle of the reference synchronizing signal, that is, one field (during interlaced scanning) as a reference, as in the case of the television camera.
The configuration is such that the supply and stop of the power supplied to the light source is controlled, that is, the irradiation of the light source 103 with the intermittent light is controlled. However, as described later, the supply and stop of the power to be supplied to the light source 103 are determined in accordance with the shutter timing of a television camera (not shown), that is, the image capturing period.

Therefore, in the photographing system of the first embodiment, for example, a generating means (not shown) for generating an external reference synchronizing signal outputs the shutter time to the connected television camera and voltage dimming control unit 101. ing.

Next, FIG. 2 shows a diagram for explaining the principle of generating the intermittent light in the first embodiment. Hereinafter, the photographing operation in the photographing system according to the first embodiment will be described with reference to FIG. However, (1) in FIG. 2 shows the input timing of the reference synchronization signal 201, (2) in FIG. 2 shows the case where the entire one-field period is set as the timing of the imaging period 202, and (3) in FIG. FIG. 2D shows a general intermittent light irradiation timing 204 synchronized with one field period, and FIG. 2F shows an embodiment of the present invention. 1 shows an intermittent light irradiation timing 205. FIG. 2 shows the case of the NTSC system, which is the current broadcasting system in which one frame is divided into two-field screens and processed at 60 fields per second. The shooting period 203 and the irradiation timing 205 are defined according to the principle of FIG. It goes without saying that the setting can be applied to other methods.

As shown in FIG. 2A, the first embodiment
In the imaging system of the first embodiment, the reference synchronization signal 20 is output every 1/60 second.
1 is generated by a generating unit (not shown) and supplied to each television camera and the voltage dimming control unit 101. At this time,
In the imaging system according to the first embodiment, the reference synchronization signal 201
At the start of output or when the shutter time is changed, the generating means outputs the set shutter time to the television camera and the voltage dimming control unit 101.

By inputting (starting) the reference synchronizing signal 201, the television camera is synchronized with the internal synchronizing signal in phase with the input reference synchronizing signal 201 and synchronously coupled. In addition, the television camera sets the entire shooting period 202 of one field period shown in (2) of FIG. 2 to a shooting period of 1/240 second (a period corresponding to ４ of one field period) based on the shutter time. ) Set to 203. As a result, as shown in (3) of FIG. 2, the television camera according to the first embodiment operates on the end side of one field, that is, the reference synchronization signal 2.
3/240 seconds from the occurrence of 01 (3/3 of one field period)
1/240 after the lapse of the period corresponding to 4 (ie, the remaining period excluding the photographing period 203 from one field period)
Photographing is performed in a period of seconds (imaging period 203).

On the other hand, the voltage dimming control unit 101 controls the supply and stop of the power to be supplied to the light source 103 in a time excluding the photographing time 203 of the television camera in synchronization with the reference synchronization signal 201. However, as shown in (4) of FIG. 2, when the synchronous control is simply performed, the photographing by the television camera and the irradiation timing of the intermittent light from the light source 103 are performed.
4 overlapped with each other, and the light emitted from the light source 103 was sometimes photographed by a television camera. For this reason, in the imaging system according to the first embodiment, as shown in (5) of FIG. 2, the voltage dimming control unit 101 immediately supplies power to the light source 103 from the input of the reference synchronization signal 201 to generate illumination light. Irradiation is started and a period of 3/240 seconds (3 of one field period)
Irradiation timing 20 in a period corresponding to す な わ ち, that is, a remaining period excluding the imaging period 203 from one field period).
By stopping the supply of power to the light source 103 at the end of Step 5, the irradiation of the illumination light is stopped. By irradiating the intermittent light at such an irradiation timing 205, the irradiating light photographed by the television camera and the irradiating light (intermittent light) irradiating from the light source 103 of the illuminating device of the first embodiment are different from each other. It can be light.

As described above, in the photographing system according to the first embodiment, the photographing period in one field period is limited by using the shutter function of the television camera, and irradiation light is emitted from the light source 103 during the remaining time. This makes it possible to generate irradiation light that is not photographed by a television camera.

As a result, by using the irradiation light from the illumination device of the first embodiment as a marker, it is possible to freely move the position of the marker even during photographing or to give an instruction only when necessary. . However, the details will be described later in embodiments.

It should be noted that there is a delay in lighting from the time when the power is supplied to the light source 103 to the irradiation of the irradiation light, or a delay in turning off the light until the irradiation light is stopped after the supply of power is cut off. It is necessary to prevent reflection of irradiation light.
For this reason, in the imaging system of the first embodiment, the light source 1
03 and the period from the end of the power supply to the light source 103 to the start of the power supply to the light source 103 during the period from the stop of the power supply to the light source 03 to the start of the shooting by the television camera.
The configuration is such that a predetermined time interval is provided. However, this time interval changes depending on the type of the light source 103 to be used, the state of the set in the photographing studio, and the like. The shutter timing of the television camera with respect to the reference synchronization signal 201 also changes depending on the type of the television camera and the like. Therefore, in the photographing system according to the first embodiment, a time corresponding to a plurality of representative types of the light sources 103 and the type of the television camera is set in advance, and the time is arbitrarily selected at the photographing site, and the time is set. By providing a switch or the like for arbitrarily changing the setting, it is possible to set an optimal time, that is, perform photographing.

In the photographing system according to the first embodiment,
TV cameras are not limited to the same model, etc.
It is preferable that at least the shutter timing of the television camera with respect to the reference synchronization signal 201 be the same. However, CCDs currently available on the market
The photographing time when the shutter timing of the TV camera using the camera is used is described in (3) of FIG.
As shown in FIG.
Is stored only in a time set by the shutter immediately before the input of the next reference synchronization signal, and the charge is output as a signal charge in the field. Therefore, even when shooting using a plurality of television cameras from different manufacturers, the shooting period can be set at the same shutter timing. Therefore, by setting the shutter speed of the TV cameras to be used simultaneously to the same value, or by adjusting the irradiation timing 205 of the intermittent light to the slowest value of the shutter speed, it is possible to easily perform illumination that is not easily captured by all the TV cameras. It is possible. Note that even when a special TV camera having a different shutter timing of the TV camera with respect to the reference synchronization signal 201 is used, a period in which no TV camera is taking a picture within one field period is secured. Can emit the intermittent light from the light source 103 during this period.

In the photographing system according to the first embodiment,
The light emission of the light source 103 is directly controlled, that is, the light source 103
It is particularly suitable when laser light or strobe light is used as the light source 103 because it is necessary to switch on and off at high speed. The use of laser light is particularly suitable because the control of the TTL signal can control the turning on and off of the laser light with an accuracy of several microseconds. However,
Even when using strobe lighting, the emission time of this strobe light (usually 1 ms or less) is very short,
This can be applied by synchronizing the light emission timing with the unexposed time of a television camera (not shown), that is, the irradiation timing 205.

(Embodiment 2) FIG. 3 is a view for explaining a schematic configuration of a photographing system according to Embodiment 2 of the present invention. However, the photographing apparatus shown in FIG. 3 includes a shutter control unit 301, a light-shielding shutter 302, and a light source 303 shown in FIG.
Except for the illumination device composed of, the configuration is the same as that of the imaging system of the first embodiment. Therefore, in the following description, only the illumination device according to the second embodiment that constitutes the imaging system according to the second embodiment will be described in detail.

The illuminating device according to the second embodiment shown in FIG. 3 has a configuration suitable for generating intermittent light using a light source 303 that is relatively unresponsive to the light source 303 and is not suitable for switching on and off in one field period. is there. However, the illumination device according to the second embodiment has a configuration in which the reference synchronization signal 201 and the shutter time of the television camera are input from a generating unit (not shown) included in the imaging system, as in the first embodiment.

Further, the illumination device of the second embodiment includes a light source 303 driven by a signal from a light control unit (not shown). It is configured to be always lit. On the front surface of the light source 303, that is, on the irradiation surface side, a well-known light-blocking shutter 302 for blocking irradiation light emitted from the light source 303 is provided. The shutter control unit 301 controls the opening and closing of the light-blocking shutter 302, that is, the passage of the irradiation light and the blocking of the light. The light shielding shutter 30 illuminated from the light source 303
In the lighting device according to the second embodiment, the light source 303 and the light-shielding shutter 30 are used so that the light shielded by the light source 2 does not become leakage light.
2 is accommodated in a light-shielding casing (not shown). However, since there is a case where the shielded irradiation light may leak, the light-shielding housing is not an essential component.

Next, the operation of the photographing system according to the second embodiment will be described with reference to FIG. In the imaging system according to the second embodiment as well, as shown in FIG. 2 described above, the shutter control section 301 synchronizes with the reference synchronization signal 201 and sets the shooting time of the TV camera (not shown) within one field period.
By opening the light-blocking shutter 302 at a time other than the time 3, the irradiation light from the light source 303 is released.
Through (transmission). However, in order to prevent the photographing by the television camera and the irradiation timing 204 of the intermittent light that is the irradiation light passing through the light-shielding shutter 302 from overlapping, the shutter control unit 301 immediately starts the 3/240 from the input of the reference synchronization signal 201. Second period (period equivalent to ３ of one field period, ie, 1
The light-shielding shutter 302 is opened at the irradiation timing 205 of the field period (the remaining period excluding the photographing period 203). By irradiating the intermittent light at such an irradiation timing 205, the irradiating light captured by the television camera and the light source 3
It is possible to use different irradiation light (intermittent light) from 03 through the light-shielding shutter 302.

As described above, in the photographing system according to the second embodiment, the photographing period in one field period is limited by using the shutter function of the television camera, and the light emitted from the light source 303 through the light-shielding shutter 302 during the remaining time. By irradiating the light, it is possible to generate irradiation light which is not photographed by the television camera.

As a result, by using the irradiation light from the illumination device of the second embodiment as a marker, it is possible to freely move the position of the marker even during photographing or to give an instruction only when necessary. . However, the details will be described later in embodiments.

As the light-blocking shutter 302, for example, a method in which a disc-shaped body provided with a slit is rotated in synchronization with the reference synchronization signal 201 to control the passage and blocking of the illumination light from the light source 303 or a known method. A liquid crystal shutter system that controls transmission and shielding (diffusion) of the liquid crystal filter in synchronization with the reference synchronization signal 201 is considered. At this time, when the passage and blocking of the photographing light are controlled by the slit, the attenuation of the illumination light from the light source 303 at the irradiation timing 205 can be prevented. However, even when the illumination light is transmitted through the liquid crystal layer as in the liquid crystal shutter method, as long as the illumination light emitted from the light source 303 is not completely absorbed in the process of transmitting through the liquid crystal layer, the liquid crystal shutter is also used. It is enough. However, a fourth embodiment described later.
When the illumination light is used as the pointing medium as described above, the light source 303 that emits the illumination light having a predetermined straightness is more suitable than the illumination light (diffused light) that diffuses.
For example, an area spotlight using an HMI, which makes it possible to draw out outlines and draw characters and figures,
ITO or a projector is also suitable. In addition,
In the case where the irradiation light according to the second embodiment is used as illumination light without using it as an indicating medium, it goes without saying that diffused light can be used as the light source 303. The adjustment of the imaging period 203 and the irradiation timing 205 in the case of using a disc-shaped body provided with a slit can be adjusted by the size of the opening of the slit and the rotation speed of the disc-shaped body, or the interval between adjacent slits. is there.

(Embodiment 3) FIG. 4 is a view for explaining a schematic configuration of a photographing system according to Embodiment 3 of the present invention. However, the photographing system according to the third embodiment is a photographing system that uses two of the lighting devices according to the above-described first embodiment to display a standing position for each of two performers.

The photographing system according to the third embodiment includes a synchronizing signal generating means (not shown) for generating a reference synchronizing signal 201,
First and second lighting devices for synchronizing and irradiating intermittent light as markers 403 and 406 for designating the standing positions of two performers with the reference synchronization signal 201, and synchronizing with the reference synchronization signal 201 The television camera 410 includes a television camera 410 that captures an image of a performer, and a monitor 411 for displaying an image captured by the television camera 410. Note that, in addition to the above-described configuration, the imaging system according to the third embodiment includes a lighting device, a sound pickup device, and the like for lighting in a studio used for normal television shooting.

The first lighting device 401 is the first performer 40
8 is illuminated, and the second lighting device 404 emits a marker 406 corresponding to the second performer 409.
Is illuminated. A well-known first color filter 40 is provided on the front surface, that is, the irradiation surface side of the first lighting device 401.
2 is disposed, and the intermittent light emitted from the first lighting device 401 is converted into, for example, red intermittent light by passing through the first color filter 402, and the red spot intermittent light is displayed on the floor surface by the marker 403. Irradiated as A well-known second color filter 40 is provided on the front surface of the second lighting device 404.
5 is disposed, and the intermittent light emitted from the second lighting device 404 is converted into, for example, green intermittent light by passing through the second color filter 405, and the green spot intermittent light is marked on the floor surface by the marker 406. Irradiated as

The television camera 410 receives the reference synchronization signal 20
The first and second performers 40 are controlled so as to capture video in a predetermined period of one field period in synchronization with the first performer 40.
8,409 is photographed. The output of the television camera 410 is output to a control room (not shown), and the monitor 4 is disposed near the television camera 410.
11 is displayed as a video output.

Next, the photographing operation of the photographing system according to the third embodiment will be described with reference to FIG. Also in the imaging system according to the third embodiment, as shown in FIG. 2 described above, the television camera 410 uses the shutter function to perform an imaging period (for example, 1 to 1) after the irradiation timing 205 period from the generation of the reference synchronization signal 201 has elapsed. / 240 seconds period) 203
Shoot with.

At this time, the first and second lighting devices 40
As shown in FIG. 2 described above, 1,404 irradiates an irradiation timing 205 which is a time excluding the photographing time 203 of the television camera 410 within one field period in synchronization with the reference synchronization signal 201. The first red marker 403 and the second green marker 406 are illuminated on the studio floor. At this time, since the first and second markers 403 and 406 that are imaged on the floor surface are imaged by continuous lighting and extinguishing during one field period, for the first and second performers, Since it is perceived as continuous lighting by the afterimage phenomenon of the eyes, it is recognized as a natural marker.

On the other hand, the television camera 410 captures an image at a timing when the first and second lighting devices 401 and 404 are turned off, that is, when the first and second markers 403 and 406 are not irradiated. Therefore, as shown on the display surface of the monitor 411, the first and second markers 403,
406 is not photographed.

As a result, by using the irradiation light from the first and second lighting devices 401 and 404 of Embodiment 3 as markers, the first and second markers 403 and 406 can be used even during shooting. It is possible to move the position freely or to give an instruction only when necessary.

In particular, in the photographing system of the third embodiment,
Since the configuration is such that markers of different colors are associated with each performer, a special effect that the first performer 408 and the second performer 409 can prevent their own markers, that is, standing positions from being mistaken, can be prevented. It is also possible to get

In the photographing system according to the third embodiment,
Since the position of the second lighting device 404 can be freely changed by, for example, the assistant director 407, the irradiation position of the second marker 406 is changed according to the timing of music or the like to perform the second appearance. Party 4
It is also possible to notify 09 of the movement of the standing position. Also in this case, the moving second marker 406 is not photographed by the television camera 410.

(Embodiment 4) FIG. 5 is a diagram for explaining a schematic configuration of a photographing system according to Embodiment 4 of the present invention. However, the imaging system according to the fourth embodiment is an imaging system that uses the lighting device according to the second embodiment to transmit information such as an instruction from the effect and the remaining time to each of the performers.

The photographing system according to the fourth embodiment includes a synchronizing signal generating means (not shown) for generating a reference synchronizing signal 201,
A well-known projector 501 that functions as a light source 303 and an instruction display;
Well-known liquid crystal shutter 502 disposed on the light projecting surface side
A personal computer 503 which is a well-known information processing device for controlling the display of the projector 501;
The television camera 508 and 510 for photographing the television cameras 6 and 507 from an angle without each other, and monitors 509 and 511 for displaying images captured by the television cameras 508 and 510, respectively. The imaging system according to the fourth embodiment includes, similarly to the imaging system according to the third embodiment, an illumination device for lighting in a studio used for ordinary television imaging, a sound pickup device, and the like, in addition to the above-described configuration. .

In the photographing system of the fourth embodiment, the projection light from the projector 501 is arranged so as to be projected on a wall 505 arranged in the direction of the line of sight of a second performer 507 acting as a moderator, for example. A liquid crystal shutter 502 arranged on the front of the projector 501
Is configured to transmit or block (diffuse) projection light of information for instruction display emitted from the projector 501 by a shutter control unit 301 (not shown). At this time, as described in the second embodiment, the television cameras 508 and 51 are synchronized with the reference synchronization signal 201.
After the end of the shooting period 203, the shutter control unit 3
Reference numeral 01 switches the liquid crystal shutter 502 from shielded to transmissive, thereby transmitting the projection light from the projector 501.

Therefore, the first performer 506 who is a guest
Can be projected above the head of the user, so that the second performer 507, who is the moderator, can check the contents of the instruction without greatly moving his / her eyes. As a result, the projection light 50 from the projector 501 is added to the image of the camera capturing the face of the first performer 506 having the wall 505 in the background.
The second performer 507, who is the moderator, can behave naturally without seeing the image 4 and seeing the instruction in the direction of the eyes.

Next, the photographing operation of the photographing system according to the fourth embodiment will be described with reference to FIG. In the imaging system according to the fourth embodiment, as shown in FIG.
Imaging is performed in an imaging period (for example, a period of 1/240 second) 203 from the start of the field, that is, the generation of the reference synchronization signal 201.

At this time, the liquid crystal shutter 502, as shown in FIG.
The irradiation timing 205 which is a time excluding the photographing time 203 of the television cameras 508 and 510 in the field period.
The state is switched to the transmission state of the projection light (the state where the projection light from the projector 501 is transmitted). Therefore, during the period of the transmission state of the projection light, the first performer 506, which is a guest,
An instruction or the like is projected above the head. At this time, the information 504 projected on the wall 505 is imaged by continuous lighting and extinguishing in one field period. Since it is perceived as lighting, it is recognized as natural instruction information.

On the other hand, two television cameras 508 and 510
Captures an image at a timing when the projection light from the projector 501 is blocked by the liquid crystal shutter 502, that is, at a timing when the instruction information is not projected, as shown on the display surfaces of the monitors 509 and 511. On the other hand, the instruction information is not captured in the images of the television cameras 508 and 511.

Also, simultaneous interpretation and conversation using the immediate output from the projector 501 by the personal computer 503 are possible.

(Embodiment 5) FIG. 6 is a diagram for explaining a schematic configuration of a photographing system according to Embodiment 5 of the present invention. However, the imaging system according to the fifth embodiment is an imaging system that realizes auxiliary lighting in a dark scene using the illumination device according to the first embodiment.

The photographing system according to the fifth embodiment includes a synchronizing signal generating means (not shown) for generating a reference synchronizing signal 201,
A first lighting device 601 that is synchronously coupled to the reference synchronization signal 201 and illuminates the vicinity of the stage 607 where the performer 604 is located with intermittent light; and a first illumination device 601 that is synchronously coupled to the reference synchronization signal 201 and retreats the performer 604 with intermittent light. Second lighting device 602 for lighting
And a television camera 605 for synchronizing with the reference synchronizing signal 201 and photographing the image of the performer 604, and a monitor 6 for displaying the image photographed by the television camera 605.
06. The imaging system according to the fifth embodiment also includes, in addition to the above-described configuration, a lighting device for lighting in a studio used for ordinary television shooting, a sound pickup device, and the like. However, ordinary lighting (not shown) is darkened based on the effect.

Next, the photographing operation of the photographing system according to the fifth embodiment will be described with reference to FIG. Also in the imaging system of the fifth embodiment, as shown in FIG. 2 described above, the television camera 605 uses the shutter function to perform an imaging period (e.g., 1 to 1) after the irradiation timing 205 period from the generation of the reference synchronization signal 201 has elapsed. / 240 seconds period) 203
Shoot with.

At this time, the first and second lighting devices 60
As shown in FIG. 2 described above, 1, 602 irradiates an irradiation timing 205 which is a period excluding the photographing period 203 of the television camera 605 within one field period in synchronization with the reference synchronization signal 201. , Stage 607
Is illuminated with the intermittent light in the vicinity of and in the backward direction of the performer 604. At this time, the first and second lighting devices 601, 602
Since the intermittent light emitted from is a continuous intermittent light that is turned on and off during one field period, the inside of the studio is darker than under normal illumination, but a sufficient amount of light is obtained for the movement of the performer 604.

On the other hand, the television camera 605 captures an image at a timing when the first and second lighting devices 601 and 602 are turned off, that is, at a timing when light is not emitted from a normal lighting device. 606
As shown in the display surface of, the performer 604 illuminated by the intermittent light from the first and second lighting devices 601 and 602 is not captured in the image of the television camera 605, and only the decorative lighting 603 is provided. The image is taken and displayed on the monitor 606.

As a result, the performer 604 can move in a bright environment even in a dark environment on the video. Therefore, it is possible to move the performer 604 quickly.

In the fifth embodiment, the illumination in the dark is
The case where the studio is brightened by the illumination light from the first and second illumination devices 601 and 602 operating in synchronization with the television camera 605 when the television camera 605 is not photographed, that is, when the television camera is not exposed to light, has been described. However, the present invention is not limited to this. For example, it is possible to increase the number of lights by switching the illuminance of the light between the time of shooting and the time of non-shooting with the same lighting device, and brightening the illuminance only during the time of no shooting. Without taking a picture, it is possible to shoot in a dark state in the studio.

In the first to fifth embodiments, the case where a television camera is used as a camera has been described. However, the present invention is not limited to this, and can be applied to other electronic imaging devices such as a home video camera. Needless to say.

Further, in the first to fifth embodiments, as shown in FIG. 2, a photographing period 203 and an unexposed period in which photographing is not performed are provided in one field period by a shutter function of a camera using a CCD as an image pickup device. Although the configuration has been described, it can also be realized by providing a mechanism equivalent to a shutter on the front of the camera. In this case, a shutter mechanism disposed on the front of the camera is controlled in synchronization with the reference synchronization signal 201, and a period during which shooting light (video light) enters the television camera in one field period (a period corresponding to the shooting period 203) )
And a period in which the photographing light is not incident (a period corresponding to a period excluding the photographing period 203). However, even in this case, similarly to the first to fifth embodiments, the light amount of the photographing light is insufficient, and it is needless to say that exposure correction for compensating for the insufficient amount is required. . As a shutter mechanism disposed on the front of the camera, a disc-shaped body provided with a slit is provided with a reference synchronization signal 201.
There is a method of controlling the passage and blocking of the photographing light by rotating in synchronization with the shutter, and a method of controlling the transmission and blocking of the liquid crystal shutter in synchronization with the reference synchronization signal 201. In the case where the camera and the shield are controlled, the photographing light is directly incident on the camera, so that the deterioration of the image quality can be prevented. However, the adjustment of the photographing period 203 in the case of using the disk-shaped body provided with the slit can be adjusted by the size of the opening of the slit, the rotation speed of the disk-shaped body, the interval between the adjacent slits, or the like.

In the first to fifth embodiments, the case where the shutter time of the television camera is set to 1/240 second has been described.
0 seconds, 1/125 seconds, 1/250 seconds, 1/500 seconds, 1
It is common to have all or any shutter speed, such as / 1000 seconds, and it goes without saying that these shutter speeds may be used. When a mechanism equivalent to a shutter is provided on the front of the camera, it is possible to set an arbitrary shutter time other than that described above. However, the present invention is also applicable. Further, the period indicated by the irradiation timing 205 can be made shorter than the imaging period 203. As such a light source, there is a case where the above-mentioned strobe light is used as a light source.

Further, in the first to fifth embodiments, the photographing period 203 is set within one field period by the shutter function.
And other periods, and the irradiation timing 205 is provided in a period excluding the photographing period 203. However, the present invention is not limited to this. For example, the irradiation timing 205 is provided in a vertical retrace period to provide illumination light. It goes without saying that a configuration for performing irradiation and instruction display may be adopted. When such a shutter function is not used, exposure can be performed in the entire one-field period. Therefore, even when the amount of light incident on the television camera at the time of exposure (at the time of photographing) is relatively small, the image is sharp. It is possible to capture a natural image. Further, since the shutter function is not used, a camera having no shutter function can also be used. The vertical blanking period is about 1.3 milliseconds in the NTSC system. Therefore, by synchronizing the light emission period of the strobe lighting device or the like with the unexposed time, illumination or instruction display that is not captured by the camera can be performed.

As described above, the invention made by the present inventor is:
Although specifically described based on the embodiments of the present invention, the present invention is not limited to the embodiments of the present invention, and it is needless to say that various modifications can be made without departing from the gist of the present invention. .

[0069]

The effects obtained by typical ones of the inventions disclosed in the present application will be briefly described as follows.

(1) By irradiating only during the non-exposure time of the television camera, this irradiation light can generate intermittent light which is not photographed by the television camera.

(2) Since information can be displayed by intermittent light that is not captured by the TV camera, the position can be designated without touching the set, and the position of the marker can be freely set even during shooting. You can move it and give instructions only when necessary.

(3) Since information can be displayed by intermittent light that is not shot by the TV camera, the set can be brightened even in a dark scene without affecting the shot image, and the safety during shooting is improved. be able to.

(4) Since information can be displayed by intermittent light that is not captured by the television camera, information can be displayed in consideration of the direction of the performer's line of sight.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining a schematic configuration of an imaging system according to a first embodiment of the present invention.

FIG. 2 is a diagram for explaining a principle of generating intermittent light according to the first embodiment of the present invention.

FIG. 3 is a diagram for explaining a schematic configuration of an imaging system according to a second embodiment of the present invention.

FIG. 4 is a diagram for explaining a schematic configuration of an imaging system according to a third embodiment of the present invention.

FIG. 5 is a diagram for explaining a schematic configuration of an imaging system according to a fourth embodiment of the present invention.

FIG. 6 is a diagram for explaining a schematic configuration of an imaging system according to a fifth embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 101 ... Voltage dimming control part 102 ... Dimming part 103 ... Light source 201 ... Reference synchronizing signal 202 ... Shooting period for one field 203 ... Shooting period using shutter function 204 ... General intermittent light irradiation timing 205 ... Application Irradiation timing of intermittent light in the invention 301 Shutter control unit 302 Light-blocking shutter 303 Light source 401 First lighting device 402 First color filters 403 and 406
... Marker 404 ... Second lighting device 405 ... Second color filter 407 ... Assistant director 408 ... First performer 409 ... Second performer 410 ... TV camera 411 ... Monitor 501 ... Projector 502 ... Liquid crystal shutter 503 ... Personal computer 504: Information projected on a wall 505: Wall 506: First performer 507 ... Second performer 508 ... First television camera 509, 511
… Monitor 510… Second television camera 601… First illumination device 602… Second illumination device 603… Decorative illumination 604… Performers 605… TV camera 606… Monitor

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/238 H04N 5/238 Z (72) Inventor Yuko Yamauchi 1-10-11 Kinuta, Setagaya-ku, Tokyo Japan Broadcasting Corporation Broadcasting Research Institute (72) Inventor Hideki Mitsumine 1-10-11 Kinuta, Setagaya-ku, Tokyo Japan Broadcasting Corporation Broadcasting Research Institute F-term (reference) 2H053 AA00 BA25 BA74 BA77 BA78 BA85 2H054 AA01 5C022 AA13 AB64 AC42 AC69 CA01

Claims (11)

[Claims] 1. An illumination method for irradiating a subject with illumination light during photography, wherein the photography is performed in synchronization with a reference synchronization signal, and the illumination is performed between the capture of a captured subject image and the capture of the next subject image. A lighting method characterized by irradiating light. 2. An illumination method for irradiating a subject with illumination light at the time of photographing, wherein the photographing is performed in synchronization with a reference synchronization signal, and the irradiation light is irradiated based on the reference synchronization signal during a period excluding a photographing period. An irradiation method, characterized in that: 3. An illuminating device for irradiating a subject with illumination light at the time of photographing, wherein the photographing is performed in synchronization with a reference synchronization signal, and the lighting is performed between the capture of a captured subject image and the capture of the next subject image. A lighting device, comprising: means for irradiating light. 4. An illumination device for irradiating a subject with illumination light at the time of shooting, wherein the shooting is performed in synchronization with a reference synchronization signal, and the shooting period is determined based on the reference synchronization signal and the shooting period of the shooting. A lighting device, comprising: means for irradiating irradiation light during a period excluding. 5. The lighting device according to claim 3, wherein the photographing is performed by dividing one field period into a photographing period and a non-photographing period. 6. A display method for displaying an instruction to an actor who is a subject during shooting, wherein the shooting is performed in synchronization with a reference synchronization signal, and between capturing of the captured subject image and capturing of the next subject image. A display method comprising displaying the instruction. 7. A display method for displaying an instruction to an actor who is a subject at the time of shooting, wherein the shooting is performed in synchronization with a reference synchronization signal, and the instruction is displayed during a period excluding a shooting period based on the reference synchronization signal. A display method characterized by: 8. A display device for displaying an instruction for an actor to be a subject at the time of photographing, wherein the photographing is performed in synchronization with a reference synchronization signal, and between capturing of the captured subject image and capturing of the next subject image. A display device, comprising: means for displaying the instruction. 9. A display device for displaying an instruction to an actor who is a subject at the time of photographing, wherein said photographing is performed in synchronization with a reference synchronization signal, and said instruction is displayed during a period excluding a photographing period based on said reference synchronization signal. A display device comprising means for performing the following. 10. A photographing system comprising: photographing means for photographing a subject image in synchronization with a reference synchronization signal; and illuminating means for illuminating the subject at the time of photographing. An imaging system comprising intermittent illumination means for irradiating illumination light therebetween. 11. A photographing system comprising: photographing means for photographing a subject image in synchronization with a reference synchronization signal; and illuminating means for illuminating the subject at the time of photographing. An imaging system, comprising: an intermittent illumination unit that irradiates irradiation light during a period excluding the imaging period.