JP2007072859A - Apparatus and program for generating cg image - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a CG image generator and a CG image generation program, capable of generating a CG image that is to be composited onto a video broadcast on the fly, without taking trouble. <P>SOLUTION: A CG image generator 1 generates CG images, by causing the CG images to change according to at least the change of the degree of illumination in a photography location to which illumination is irradiated. The CG image generator is provided with: a CG data storage means 9 for storing CG data to be used for generating the CG image; an illumination control signal acquisition means 3 for acquiring an illumination control signal: a control signal conversion means 5 for converting the illumination control signal to a CG control signal: and a CG image generation means 7 for generating the CG image. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a CG image generation device and a CG image generation program for generating a CG image to be combined with a captured video.

  Conventionally, a CG image created based on illumination data and various types of change information (temperature change, change in wind direction, etc.) is added to a photographed image, that is, an image containing only a live-action image (reflecting the CG effect). In order to produce a composite video, it has been performed by post-processing (post-processing) (see, for example, Patent Document 1).

In other words, the production of a conventional synthesized video is performed in the order of live-action recording, CG image creation, and synthesis processing (post-pro). The CG image (CG object) in the CG image creation is manually created in accordance with the position of the live-action video (light source), and is made into a composite video in the synthesis process (post-production).
Japanese Patent No. 3486575

  However, in the production of conventional synthesized video, it is necessary to adjust the synthesized video so that a sense of incongruity caused by the synthesis of the live-action video and the CG image is reduced in the synthesis process. There is a problem that composite video cannot be supported. It should be noted that the discomfort caused by the synthesis of the live-action video and the CG image is caused by the shadow appearance (direction, angle, density) in the live-action video (real-action portion) and the shadow appearance (direction, angle) in the CG image (CG portion). , Density), discomfort caused by reflected light from illuminated objects (light transparency, shine, etc.), and light projected in live-action images (illumination) And the discomfort caused by the light having the directivity different from the directivity of the light (illumination) projected in the CG image, and the color of the light (illumination) between the real image and the CG image There is a sense of incongruity due to disagreement.

  In addition, in conventional composite video production, there was no means to record lighting data and reflect it later, so when shooting live-action video, moving shots using a dolly or a crane, etc. by a camera are included. In this case, since the directionality and color of a live-action image (light source) change per unit time, the collection of illumination data becomes very difficult and takes time. As a result, the work in the synthesis process is performed while collecting illumination data in units of frames, and there is a problem that a work amount that requires enormous time and labor is required.

  Therefore, the present invention aims to solve the above-described problems and provide a CG image generation apparatus and a CG image generation program capable of generating a CG image to be synthesized with a video broadcast in real time without taking time and effort. And

  In order to solve the above-mentioned problem, the CG image generation device according to claim 1 is a CG image generation device that generates a CG image to be synthesized by changing at least a change in illuminance at a photographing location where illumination is irradiated. Thus, a configuration is provided that includes CG data storage means, illumination control signal acquisition means, control signal conversion means, and CG image generation means.

  According to such a configuration, the CG image generation apparatus acquires the control signal from the illumination control unit that outputs the control signal indicating the illumination state of the illumination device installed at the photographing location by the illumination control signal acquisition unit. The control signal includes the color of the illumination (light) emitted from the illumination device, the illumination direction (direction) from the illumination device to the irradiated object, the intensity of the illumination (brightness, illuminance), and the illumination device (light). Body) lens mechanisms (iris, focus, zoom), shutters, cutters, and gobos (seed plates) that control the changing speed (speed control signal). In other words, the control signal includes at least one signal among all signals that can control the texture and state (state) of illumination (light).

  Subsequently, the CG image generation device refers to the CG control that is referred to when the control signal conversion unit generates the CG image based on the conversion table that can arbitrarily change the control signal acquired by the illumination control signal acquisition unit. Convert to signal. The conversion table that can be arbitrarily changed is used when receiving a control signal and outputting a conversion output based on a parameter as a CG control signal, and can be configured by hardware or software. The parameters of the conversion table can be changed at any timing by the user of the apparatus. The parameters of the CG control signal include position (transition), rotation (rotation), size (size), texture (material), and the like.

  The CG image generation device generates a CG image by the CG image generation unit based on the CG control signal converted by the control signal conversion unit and the CG data stored in the CG data storage unit.

  The CG image generation program according to claim 2, wherein the CG image for generating the CG image is generated in order to change and generate a CG image to be synthesized in accordance with at least a change in illuminance at a photographing location where illumination is irradiated. A computer having CG data storage means for storing data is configured to function as illumination control signal acquisition means, control signal conversion means, and CG image generation means.

  According to such a configuration, the CG image generation program acquires the control signal from the illumination control unit that outputs the control signal indicating the illumination state of the illumination device installed at the photographing location by the illumination control signal acquisition unit. Subsequently, the CG image generation program converts the control signal acquired by the illumination control signal acquisition unit by the control signal conversion unit into a CG control signal to be referred to when generating a CG image based on a preset conversion table. Convert. The CG image generation program generates a CG image by the CG image generation unit based on the CG control signal converted by the control signal conversion unit and the CG data stored in the CG data storage unit.

  The CG image generation device according to claim 3 is a CG image generation device that generates a state in which a real space imaged from sensor data obtained by a sensor is reflected in a CG image in a virtual space, CG data storage means, sensor data acquisition means, data conversion means, and CG image generation means are provided.

  According to this configuration, the CG image generation device acquires sensor data by the sensor data acquisition unit, and generates a CG image from the sensor data acquired by the data conversion unit based on a preset conversion table. To a CG control signal to be referred to. Examples of sensors include pressure, temperature, odor sensors, and the like. The CG image generation device generates a CG image by the CG image generation unit based on the CG control signal converted by the data conversion unit and the CG data stored in the CG data storage unit.

  The CG image generation program according to claim 4 draws the CG image so as to reflect the state of the real space captured from the sensor data obtained by the sensor in the CG image in the virtual space. The computer provided with CG data storage means for storing CG data for functioning is configured to function as sensor data acquisition means, data conversion means, and CG image generation means.

  According to this configuration, the CG image generation program acquires sensor data by the sensor data acquisition unit, and generates a CG image from the sensor data acquired by the data conversion unit based on a preset conversion table. To a CG control signal to be referred to. The CG image generation program generates a CG image based on the CG control signal converted by the data conversion unit and the CG data stored in the CG data storage unit by the CG image generation unit.

  According to the first or second aspect of the present invention, it is possible to obtain an illumination control signal for controlling the illumination state of the illumination device, and to obtain the illumination control signal based on a conversion table that can be arbitrarily changed. It is converted into a CG control signal that is referred to when an image is generated. Then, by using this CG control signal when generating a CG image, it is possible to obtain a CG image corresponding to the illumination state of the image being taken without taking time and effort.

  According to the invention described in claim 3 or claim 4, the CG control signal that is referred to when the sensor data is acquired and the acquired sensor data is generated based on the conversion table that can be arbitrarily changed is generated. Convert to Then, by using this CG control signal when generating a CG image, it is possible to obtain a CG image corresponding to the image of the real space being photographed without taking time and effort.

Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
<Configuration of CG Image Generating Device (First Embodiment)>
FIG. 1 is a block diagram of a CG image generation apparatus (first embodiment). As shown in FIG. 1, the CG image generation device 1 generates a CG image that is synthesized in real time with a captured video, and includes an illumination control signal acquisition unit 3, a control signal conversion unit 5, and a CG image. A generation unit 7 and a CG data storage unit 9 are provided. In addition, the video composition device 1 includes an illumination control device (illumination control means) 4 that controls the illumination device 2 installed at the photographing location, a photographing camera (imaging means) 6, and a CG generated by the device 1. A video synthesizing device 8 that synthesizes the image and the video taken by the photographing camera 6 is connected.

  Prior to the description of the configuration of the CG image generating device 1, the lighting device 2, the lighting control device 4, the photographing camera 6, and the video composition device 8 will be described.

  A plurality of lighting devices 2 are installed at various places (usually in the studio, close to the performer or close to the performers) in the shooting place (for example, studio), and various lighting devices 2 output from the lighting control device 4 are provided. It is controlled based on a control signal (illumination control signal). The lighting device 2 has various types, shapes, and functions.

  Further, the illumination device 2 is configured to be able to adjust the illuminance and color of the illumination. Depending on the type (illumination capable of remotely controlling movement), the illumination device 2 can freely change the illumination direction, which is the illumination direction. Means (such as a drive motor and a movable housing) are integrally provided. In the model referred to here, as a rough classification, “fixed illumination” (general illumination) and the illumination direction of a fixed object that can be changed within a predetermined angle can be changed. It is divided into “lights that can remotely control movement” (or special effect devices) and so-called moving lights.

  This moving light is not only capable of controlling pan / tilt (direction, movement, speed), but also lighting, that is, lighting conditions (brightness, color, pattern), lens Even the state (focus, iris, cutter) can be controlled (changed).

  In addition, as the “illumination capable of remotely controlling the movement” of the lighting device 2, for example, in the case of a mirror ball, the “rotation speed” is set to a smoke machine (a special example of the lighting device (blocking light with smoke is also one of the lighting) Mode)), “smoke amount generated” for strobe machines, “light emission timing (flash interval)” for strobe machines, and operation (brightness, pan, tilt, zoom) for moving projectors. , Focusing, etc.) can be changed by the illumination control signal.

  Thus, what is not purely “lighting equipment” (having a function of more than a single function to illuminate) is also “apparatus controlled by the lighting control signal”, and here is an embodiment of the lighting equipment. .

  The lighting control device 4 controls the lighting device 2 in an integrated manner by outputting various control signals (lighting control signals) to the plurality of lighting devices 2. The illumination controller 4 is connected to an illumination controller (not shown). The illumination controller controls the illuminance and color of the illumination output from the illumination device 2 and the irradiation direction. The

  The photographing camera 6 photographs a subject (performer, set, etc.) existing at the photographing location. The photographing camera 6 is a general camera used for program production at a broadcasting station or the like, and can perform basic operations such as panning, tilting, focusing, and zooming. Then, an image captured by the imaging camera 6 and an operation control signal indicating an operation by the imaging camera 6 are input to the image synthesis apparatus 1. The photographing camera 6 may be of a type that is directly operated by a staff member engaged in program production, or of a type that is remotely operated (robot camera). In addition, the photographing camera 6 may be for high-definition, or may be for conventional digital broadcasting or analog broadcasting.

  The video synthesizing device 8 synthesizes the video shot by the camera 6 and the CG image generated by the CG image generating means 7 (described later) of the CG image generating device 1 and outputs the synthesized video. is there. The synthesized video output from the video synthesizer 8 is transmitted to a broadcasting facility (not shown) and broadcast in real time. That is, the video synthesizer 8 synthesizes a CG image corresponding to the illumination at the shooting location that could not be realized by the conventional video synthesizer in real time, that is, uses the CG image as a real-time-linked video effect. Is possible.

From here, each structure of the CG image generation apparatus 1 is demonstrated.
The illumination control signal acquisition unit 3 acquires an illumination control signal output from the illumination control device 4. The illumination control signal acquired by the illumination control signal acquisition means 3 includes those that increase or decrease the illumination intensity, those that change the color of the illumination, and those that change the illumination direction. The CG image generation apparatus 1 grasps the illumination condition (illumination state) at the shooting location by this illumination control signal, and reflects it in the CG image generated by the CG image generation means 7.

  The illumination control signal acquisition unit 3 acquires a feedback signal output from the illumination device 2. When the lighting device 2 is “lighting whose movement can be remotely controlled”, the lighting device 2 is controlled by the lighting control signal output from the lighting control device 4 and the lighting device 2 actually operates. As a result, when some deviation (position or direction deviation) occurs, this deviation can be detected in real time. That is, the feedback signal indicates an actual movement amount, position coordinates, irradiation direction, and the like when the lighting device 2 moves.

  The control signal conversion unit 5 converts the illumination control signal and feedback signal acquired by the illumination control signal acquisition unit 3 into a CG control signal to be referred to when generating a CG image based on a conversion table 5a that can be arbitrarily changed. To convert.

  This arbitrarily changeable conversion table 5a associates the illumination control signal, the feedback signal, and the CG control signal, and is set by the user of the apparatus 1 according to the function of the connected lighting device 2. Yes, it can be set as a fixed parameter while shooting the shooting location with the shooting camera 6, or can be set so that the parameter changes as time passes or at an arbitrary timing. It is a thing.

  For example, when the lighting device 2 is a moving light, the conversion table 5a is set with a parameter that changes the position of the CG according to the movement of the moving light. In the conversion table 5a, a parameter for changing the color of the CG according to the moving speed of the moving light is set. For example, when the speed of the lighting device 2 is higher than the predetermined speed, a CG image is generated in red (reddish), and when the speed of the lighting device 2 is lower than the predetermined speed, the CG image is generated. Produce an image that is bluish (bluish).

  In addition, for example, the conversion table 5a corresponds to an animation queue in which a decrease in illuminance is associated with the start of synthesis of animation (continuous CG images), a change in illumination color, and a change in CG image color. Attached, a change in the position in the illumination direction and a change in the display position of the CG image are associated, and a change in the angle in the illumination direction and a change in the display angle of the CG image are associated with each other. Things are included.

The CG control signal controls the position (Transition), rotation (Rotation), size (Size), and texture (Material) of the CG image. Incidentally, the texture of the CG image depends on the CG drawing system mounted on the apparatus 1.
For example, in the case of Viz (product name), five textures of “Ambient”, “Specular”, “Emission”, “Diffusion”, and “Alpha” can be set.

  The CG image generation unit 7 includes a CG control signal output from the control signal conversion unit 5, an operation control signal (camera parameter) output from the photographing camera 6, and CG data stored in the CG data storage unit 9. Based on the above, a CG image is generated. In other words, the CG image generation means 7 reflects the lighting situation of the shooting location that changes every moment by the CG control signal in the generated CG image, and the operation (pan, tilt, focusing) of the shooting camera 6 by the operation control signal. , Zoom) is reflected in the generated CG image.

  Further, the CG image generation means 7 can change the shape, direction, color, texture, etc. of the CG image to be generated, that is, the CG object based on the CG control signal, or reproduce it as an animation. is there. That is, the CG image generated by the CG image generating means 7 gives various video effects to the viewer. The CG image generated by the CG image generation means 7 is output to the video composition device 8.

  The CG data storage means 9 stores CG data for generating a CG image, and is constituted by a general hard disk or the like. As CG data, for example, a character co-starring with a performer can be cited.

  According to the CG image generation device 1, the illumination control signal acquisition unit 3 acquires an illumination control signal for controlling the illumination state of the lighting device 2, and the acquired illumination control signal is converted into a conversion table of the control signal conversion unit 5. Based on 5a, it converts into the CG control signal referred when producing | generating a CG image. Then, by using this CG control signal when the CG image generating means 7 generates a CG image, it is possible to obtain a CG image corresponding to the illumination state of the image being taken without taking time and effort.

<Operation of CG Image Generating Device (First Embodiment)>
Next, the operation of the CG image generation apparatus 1 will be described with reference to the flowchart shown in FIG. 3 (see FIG. 1 as appropriate).
First, the CG image generation device 1 acquires an illumination control signal from the illumination control device 4 by the illumination control signal acquisition unit 3 (step S1). Subsequently, the CG image generating apparatus 1 converts the illumination control signal into a CG control signal by the control signal converting unit 5 (step S2).

  The CG image generation apparatus 1 receives the CG control signal input from the control signal conversion unit 5, the operation control signal input from the photographing camera 6, and the CG data storage unit 9 by the CG image generation unit 7. A CG image is generated based on the CG data (step S3). Thereafter, the CG image generation device 1 outputs the generated CG image to the video composition device 8, and the video composition device 8 uses the video input from the photographing camera 6 and the CG image generation means 7 of the CG image generation device 1. Are combined with the CG image generated in step (3), and the combined image is output.

<Configuration of CG Image Generation Device (Second Embodiment)>
FIG. 2 is a block diagram of the CG image generation apparatus (second embodiment). As shown in FIG. 2, the CG image generation device 1A generates a CG image that is synthesized in real time with the video being shot. The sensor data acquisition means 13, the data conversion means 15, and the CG image drawing means (CG image generation means) 7A and CG data storage means 9 are provided. Note that a photographing camera 6, a sensor 10, and a video composition device 8 are connected to the video composition device 1A. Also, the same configuration as the configuration of the CG image generation apparatus 1 shown in FIG.

  The sensor 10 measures (signals and data) the state of the shooting location (real space) where the shooting camera 6 is shooting. The sensor 10 measures the acceleration of a moving subject, such as a pressure sensor (detects atmospheric pressure or human inspiration / expiration and uses it to change a CG image), temperature sensor, wind sensor, odor sensor, and acceleration sensor. The maximum acceleration when moving by attaching to a human arm or leg is reflected in the CG image).

  The sensor data acquisition unit 13 acquires sensor data converted into data by the sensor 10. In FIG. 2, only one signal line from the sensor 10 to the sensor data acquisition unit 13 is illustrated. However, the sensor data acquisition unit 13 includes as many sensors as the number of types of sensors 10. Data is being acquired.

  The data conversion means 15 converts the sensor data acquired by the sensor data acquisition means 13 into a CG control signal to be referred to when drawing a CG image based on the data conversion table 15a.

  In the data conversion table 15a, sensor data corresponding to various sensors 10 and CG control signals are associated with each other. For example, the data conversion table 15a includes a table in which a temperature (sensor data) detected by a temperature sensor (sensor 10) is associated with a change in facial expression of a CG character (CG image). In this case, the data conversion means 15 uses the CG control signal to instruct the CG image drawing means 7A to draw so that the expression of the CG character is hot when the temperature detected by the temperature sensor is higher than the predetermined temperature. Will be converted.

  The CG image drawing unit 7A is configured to convert the CG control signal converted by the data conversion unit 15, the operation control signal (camera parameter) output from the photographing camera 6, and the CG data stored in the CG data storage unit 9. Based on this, a CG image is drawn. In other words, the CG image drawing means 7A reflects various changes in the real space (shooting place) that changes every moment according to the CG control signal in the CG image to be drawn. The operations (pan, tilt, focusing, zoom) are reflected on the CG image to be drawn.

  The CG image drawing unit 7A is slightly different from the CG image generation unit 7 shown in FIG. 1, and a case where a plurality of CG control signals are input simultaneously (a plurality of sensor data from various sensors 10) is assumed. The combination of these CG control signals makes it possible to change the output CG image in various ways. For example, when temperature and wind power are input as sensor data, a facial expression (hot or cold) of a drawn CG character (human CG object) and clothes (wind power) It can be reflected in the size).

  According to this CG image generating apparatus 1A, the sensor data acquisition unit 13 acquires sensor data detected by the sensor 10, and the acquired sensor data is converted into a CG image based on the data conversion table 15a of the data conversion unit 15. It is converted into a CG control signal that is referenced when drawing. Then, by using this CG control signal when drawing a CG image, it is possible to obtain a CG image corresponding to the image of the real space being photographed without taking time and effort.

<Operation of CG Image Generation Device (Second Embodiment)>
Next, the operation of the CG image generation apparatus 1A will be described with reference to the flowchart shown in FIG. 4 (see FIG. 2 as appropriate).
First, the CG image generation device 1A acquires sensor data detected by the sensor 10 by the sensor data acquisition unit 13 (step S11). Subsequently, the CG image generation apparatus 1A converts the sensor data into a CG control signal by the data conversion unit 15 (step S12).

  The CG image generation device 1A receives the CG control signal input from the data conversion unit 15, the operation control signal input from the photographing camera 6, and the CG data storage unit 9 by the CG image drawing unit 7A. A CG image is drawn based on the CG data (step S13). Further, the CG image generation device 1A outputs the CG image drawn by the CG image drawing means 7A to the video synthesis device 8, and this video synthesis device 8 includes the video inputted from the photographing camera 6, and the CG image generation device. The CG image generated by the 1A CG image drawing means 7A is synthesized, and this synthesized synthesized video is output.

<Specific Example of CG Image Generation Device>
Next, a specific example in which the CG image generation apparatus 1 is incorporated, that is, the video composition system S will be described with reference to FIG.
This video composition system S is a system in which illumination and CG are linked by a control signal and encoder information. The illumination device 2, the illumination control device 4, and two moving lights (the illumination device 2 and illumination control). A data relay that relays data from the moving light, a data collector that collects data (corresponding to the lighting control signal acquisition means 3), and a lighting control device. 4, an illumination controller (input means), an interface, a data conversion PC (corresponding to the control signal conversion means 5), a hub, and an existing virtual studio PC (CG image generation means 7, video composition device) 8) and a camera with a sensor (corresponding to the photographing means 6 and the sensor 10).

  In this way, by configuring the video composition system S, a CG image reflecting the control signals (lighting control signals and CG control signals) output from the lighting controller is produced on the existing virtual studio PC, and with a sensor. Can be combined with the video shot by the camera and output.

  In addition to the lighting controller, a video console, a voice console, a mouse / keyboard, and other human interfaces can be used. Further, as the lighting device 2, a space effect lighting device and a general household lighting device can be used.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. For example, in the present embodiment, the CG image generation apparatuses 1 and 1A have been described. However, a CG image generation program described in a general-purpose or special computer language is possible so that the processing of each component of the apparatuses 1 and 1A can be realized. It is also possible. In these cases, the same effects as those of the CG image generation apparatuses 1 and 1A can be obtained.

1 is a block diagram of a CG image generation device (first embodiment) according to an embodiment of the present invention. It is a block diagram of a CG image generation device (second embodiment) according to an embodiment of the present invention. It is a flowchart for demonstrating operation | movement of the CG image generation apparatus (1st embodiment) shown in FIG. It is a flowchart for demonstrating operation | movement of the CG image generation apparatus (2nd Embodiment) shown in FIG. It is the figure which showed the video composition system which is one of the specific examples incorporating the CG image generation apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1A CG image generation apparatus 2 Lighting equipment 3 Illumination control signal acquisition means 4 Illumination control apparatus 5 Control signal conversion means 5a Conversion table 6 Shooting camera 7 CG image generation means 7A CG image drawing means (CG image generation means)
8 Video composition device 9 CG data storage means 10 Sensor 13 Sensor data acquisition means 15 Data conversion means 15a Data conversion table

Claims (4)

A CG image generating device that generates a CG image to be synthesized by changing at least a change in illuminance at a photographing location where illumination is irradiated,
CG data storage means for storing CG data for generating the CG image;
An illumination control signal acquisition means for acquiring the control signal from an illumination control means for outputting a control signal indicating an illumination state by one or a plurality of illumination devices installed in the photographing place;
CG control that is referred to when generating the CG image based on a conversion table that can arbitrarily change a plurality of the illumination states and the display of the CG image, based on the control signal acquired by the illumination control signal acquisition means. Control signal converting means for converting into a signal;
CG image generation means for generating the CG image based on the CG control signal converted by the control signal conversion means and the CG data stored in the CG data storage means;
A CG image generating apparatus comprising: A computer provided with CG data storage means for storing CG data for generating the CG image in order to change and generate a CG image to be synthesized in accordance with at least a change in illuminance at a photographing location where illumination is irradiated. The
An illumination control signal acquisition means for acquiring the control signal from an illumination control means for outputting a control signal indicating an illumination state by one or a plurality of illumination devices installed at the photographing location;
CG control that is referred to when generating the CG image based on a conversion table that can arbitrarily change a plurality of the illumination states and the display of the CG image, based on the control signal acquired by the illumination control signal acquisition means. Control signal converting means for converting into a signal,
CG image generation means for generating the CG image based on the CG control signal converted by the control signal conversion means and the CG data stored in the CG data storage means,
A CG image generation program that is made to function as A CG image generation device that generates a state of a physical space that is captured from sensor data obtained by a sensor by reflecting the state in a CG image in a virtual space,
CG data storage means for storing CG data for generating the CG image;
Sensor data acquisition means for acquiring the sensor data;
Data conversion means for converting the sensor data acquired by the sensor data acquisition means into a CG control signal to be referred to when generating the CG image based on a conversion table that can be arbitrarily changed;
CG image generation means for generating the CG image based on the CG control signal converted by the data conversion means and the CG data stored in the CG data storage means;
A CG image generating apparatus comprising: CG data storage means for storing CG data for generating the CG image in order to generate the state of the real space captured from the sensor data obtained by the sensor by reflecting it in the CG image in the virtual space. A computer with
Sensor data acquisition means for acquiring the sensor data;
Data conversion means for converting the sensor data acquired by the sensor data acquisition means into a CG control signal to be referred to when generating the CG image based on a conversion table that can be arbitrarily changed,
CG image generation means for generating the CG image based on the CG control signal converted by the data conversion means and the CG data stored in the CG data storage means,
A CG image generation program that is made to function as

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