JP2007041876A - Image display device and image display program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display device and image display program capable of facilitating the detection of incomplete parts in a virtual model, such as to be estimated as a defect in the case of rendering the virtual model created for the purpose of being displayed on a display screen of particular specifications in accordance with a display screen of other specifications. <P>SOLUTION: The image display device comprises an operating means for receiving an operation input, a main image generating means for generating a main image by rendering the virtual model with a main virtual camera with the same attributes as those of the virtual camera attached at least about a position and a direction in a virtual three-dimensional space, a sub virtual camera control means for setting attributes of a sub virtual camera including at least the position and direction in the virtual three-dimensional space according to a signal from the operating means, a sub image generating means for generating a sub image by rendering the virtual model with the sub virtual camera, and a display means for visually displaying the main image and the sub image. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an image display device and an image display program for generating a moving image by computer graphics (CG moving image) by rendering a plurality of objects in a virtual three-dimensional space according to a predetermined attribute assigned to a virtual camera. The present invention relates to an image display device and an image display program used for inspecting defects or incompleteness of the shape and arrangement of objects in a virtual three-dimensional space inherent in a CG moving image.

  CG movies are used in various genres including TVs, movies, games, as well as gaming machines equipped with display devices such as slot machines and pachinko machines, and CG videos created for use in a specific genre. In some cases, a movie is used for other genres.

  A particular problem in such diversion is that the specifications of the display device used for each genre may be different.

  In CG animation, objects with various things (people, animals, buildings, roads, forests, forests, mountains, rivers, etc.) and light sources with attributes such as position, color, and luminous intensity are placed in a virtual three-dimensional space. Thus, a virtual model is created, and the virtual model is generated by rendering using a virtual camera to which attributes such as coordinates, direction, angle of view, and roll are assigned.

  Here, the virtual model is usually created around the range that falls within the frame of the virtual camera. In many cases, the virtual model outside the frame of the virtual camera is not produced from the beginning. Even if there is an unnatural part of the model, it is often not corrected unless it enters the frame.

  However, when the incomplete virtual model as described above is used as it is for other display devices with different specifications such as the aspect ratio of the display screen, the attributes such as the angle of view of the virtual camera are the same as those of the target display device. Since it is changed according to the specification, even an incomplete part in the virtual model is rendered, and a defect is included in the CG moving image.

Conventionally, such defects were visually inspected by displaying a CG movie on the display screen of the diversion destination, but it was a great effort to identify all defects including slight defects at the corners of the display screen. Cost was necessary.
JP 2000-153063 A

  The present invention has been made in view of the above situation, and is evaluated as a defect when a virtual model created for display on a display screen of a specific specification is rendered in accordance with a display screen of another specification. It is an object of the present invention to provide an image display device and an image display program that can easily find an incomplete part in a virtual model.

The present invention solves the above problems,
An image display device for inspecting the virtual model in a CG video generated by rendering a virtual model composed of one or a plurality of objects arranged in a virtual three-dimensional space with a virtual camera,
An operation means for accepting an operation input;
Main image generation means for generating a main image by rendering the virtual model by a main virtual camera assigned the same attribute as the virtual camera at least in position and direction in a virtual three-dimensional space;
Sub-virtual camera control means for setting attributes of the sub-virtual camera including at least the position and direction in the virtual three-dimensional space in accordance with a signal from the operation means;
Sub-image generating means for generating a sub-image by rendering the virtual model by the sub-virtual camera;
An image display device comprising: display means for visually displaying the main image and the sub-image.

  The CG moving images to be inspected in the present invention include all genres including CG moving images used in game machines equipped with display means such as pachinko and slot machines as well as CG moving images for movies, televisions and games. CG animation is included.

  The attribute of the main virtual camera or sub-virtual camera in the present invention defines the shooting frame of the main virtual camera or sub-virtual camera, and such attribute includes the virtual three-dimensional space of the main virtual camera or sub-virtual camera. The position, direction, angle of view, roll, etc. are included.

  As for the attributes of the main virtual camera, the same attributes as those of the virtual camera in the CG moving image of the diversion source are set as the common attributes between the display means at the diversion source and the diversion destination such as position, direction, and roll. be able to.

  For attributes such as the angle of view that differ between the diversion source and diversion destination display means, the main virtual camera attribute can have the diversion destination attribute. It is possible to determine whether or not a defect in the virtual model confirmed by the sub-image can be a defect in the diverted display means.

  In response to an operation input from the operation means, the sub virtual camera control means in the present invention can set attributes such as the position, direction, and angle of view of the sub virtual camera in the virtual three-dimensional space, for example. .

  The main image generation unit and the sub image generation unit in the present invention generate a main image or a sub image by rendering a virtual model according to the attributes of the main virtual camera and the sub virtual camera, respectively.

  The image display device according to the present invention preferably further includes a switching unit for switching the display on the display unit between the main image and the sub-image in response to an operation input to the operation unit.

  In the image display device of the present invention, when switching from the main image to the sub image is performed by the switching unit, the initial value of the attribute data of the sub virtual camera is used as the initial value of the main virtual camera at the time of switching. It is preferred that attribute data be provided.

  The image display device of the present invention preferably records data about the virtual model and the main virtual camera in a read-only memory, and records data about the sub virtual camera in a rewritable memory.

  The image display apparatus of the present invention further includes a debug light source control unit that receives designation of an attribute of a debug light source arranged in a virtual three-dimensional space in response to an operation input to the operation unit, and the sub-image includes the sub image, It is preferable that a correction virtual model formed by adding the debug light source to the virtual model is generated by rendering with the sub virtual camera.

  The image display device of the present invention preferably further comprises sub virtual camera history recording means for recording the attributes of the sub virtual camera received by the sub virtual camera control means in time series.

The present invention is an image display program for inspecting the virtual model in a CG moving image generated by rendering a virtual model composed of one or a plurality of objects arranged in a virtual three-dimensional space with a virtual camera. There,
On the computer,
Control for generating a main image by rendering the virtual model by a main virtual camera assigned the same attribute as the virtual camera at least in a position and direction in a virtual three-dimensional space;
Control for setting attributes of the sub-virtual camera including at least the position and direction in the virtual three-dimensional space in accordance with a signal from the operation means;
Control to generate a sub-image by rendering the virtual model by the sub-virtual camera;
It is also possible to configure as an image display program that executes control for displaying the main image and the sub-image on display means.

  In the invention of claim 1 or 7 of the present application, since the inspector is provided with a sub-virtual camera whose attributes can be freely adjusted, it is easy to find a defect in the CG video that is difficult to find in the main image that is the image of the main virtual camera. A sub-image that can be generated can be generated.

  According to the second aspect of the invention, since the switching means for switching the main image and the sub image to display on the display means is provided, the main image confirmation and the sub image inspection work can be performed using a single display means. It becomes possible.

  In the invention of claim 3, when switching from the main image to the sub image, the attribute data of the main virtual camera at the time of switching is given as the initial value of the attribute data of the sub virtual camera. The part in the virtual model that was displayed in is displayed as a sub-image at the same time as switching to the sub-image, and therefore, the inspection with the sub-image of the part that felt uncomfortable during the confirmation of the main image is smoothly performed. Can be done.

  According to the fourth aspect of the present invention, there is no worry of rewriting the data to be verified, and it is possible to safely perform the inspection while freely adjusting only the sub virtual camera.

  In the invention of claim 5, when there is a part whose brightness is low in the sub-image such as a part where light from the light source in the virtual model is blocked by another object, By increasing the brightness, it is possible to facilitate the inspection.

  In the invention of claim 6, it is possible to repeatedly inspect the sub-image in the same manner. For example, when the sub-image is unnatural, the same sub-image is inspected again. It is possible to improve the convenience of inspection work, such as confirming the cause.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  1 and 2 illustrate how the present invention facilitates the inspection of incompleteness of a virtual model, which was difficult to discriminate with conventional inspection.

  FIG. 1A illustrates the positional relationship between the virtual model 10 including the human object 11 and the fence object 12 arranged in the virtual three-dimensional space, and the virtual cameras 13a to 13c arranged in the virtual three-dimensional space. FIG. The virtual model 10 is produced assuming a depiction of a scene in which a person 11 'is looking at this from the other side of the fence 12' as shown in FIG. 1 (b). The virtual camera 13a is a virtual camera used in the diversion-source CG movie, and the virtual camera 13b is arranged in the same direction and in the same direction as the virtual camera 13a, and matches the specification of the display screen of the diversion destination. The main virtual camera is provided with an angle of view, and the conventional inspection of the CG moving image has been performed by visually confirming the image by the main virtual camera 13b. The virtual camera 13c is a sub-virtual camera in the present invention, and its attributes can be freely operated independently from the virtual cameras 13a and 13b by an input from the operation device.

  2A to 2C show images 10a to 10c obtained by rendering the virtual model 10 in FIG. 1A according to the attributes given to the virtual cameras 13a to 13c, respectively.

  As shown in FIG. 1 (a), the virtual model 10 is incomplete because modeling below the knee of the human object 11 is not performed. However, the lower half of the human object 11 is outside the frame of the diverting virtual camera 13a, and as shown in FIG. 2A, the image 10a rendered by the virtual camera 13a has a defect as an image constituting a CG video. There is no.

  On the other hand, as shown in FIG. 2B, the main virtual camera 13b is given an angle of view having a larger aspect ratio (longer vertical direction) than the virtual camera 13a in accordance with the specifications of the diverted display device. ing. Accordingly, in the image 10b rendered by the main virtual camera 13b, even the portion outside the frame in the diverting virtual camera 13a is displayed. As a result, an unnatural person image 11b without a knee is shown as shown in the figure. It is displayed in the image and has a defect as an image constituting the CG moving image.

  The defect in FIG. 2 (b) is a minor defect that can be slightly confirmed from the gap of the fence image 12b at the lower end of the image 10b, but still a viewer of a CG video (a player in the case of a gaming machine). May cause arousal, or even if the defect is not noticed, the presence of the defect may reduce the value of the CG movie. At the same time, in the visual inspection of the image 10b, such a minor defect is often overlooked, and a great deal of cost and labor are required to completely eliminate such an oversight.

  On the other hand, the sub-virtual camera 13c of the present invention is free from coordinates, orientations, and images in the virtual three-dimensional space according to the operation of the inspector, completely independent of the setting of the virtual camera 13a in the CG movie of the diversion source. It is possible to adjust attributes such as corners. Therefore, for example, as shown in FIG. 1A, if the sub virtual camera 13c is arranged from the position behind the human object 11 toward the feet of the human object 11, the defect shown in FIG. For example, it is possible to display an image 10c that can be found on the display device on the display device.

  FIG. 3 is an explanatory diagram showing a hardware configuration of the image display apparatus 20 according to an embodiment of the present invention.

  As shown in the figure, the image display device 20 includes a CPU 21, a volatile memory 22, a nonvolatile memory 23, an external recording medium drive 24, an input control IC 25, an image synthesis IC 26, a voice synthesis IC 27, and a bus 28 for connecting them. The control device 25a, the display device 26a, and the speaker 27a are connected to the input control IC 25, the image synthesis IC 26, and the voice synthesis IC 27, respectively.

  The CPU 21 includes a logic circuit and a sequential circuit for executing control operations according to various programs recorded in the nonvolatile memory 23 in cooperation with an operating system or the like.

  The volatile memory 22 is a random access memory as a main memory, and temporarily records control information such as a stack and a frame counter referred to by the image display program of the present invention and information necessary for image display.

  The non-volatile memory 23 includes an HDD, a DVD-RW, a flash memory, and the like, and has an area for recording the image display program of the present invention and the operation history of the sub-virtual camera, and supplementary data such as inspection history information. An area for recording is provided. The sub-virtual camera history recording area records attribute data such as the coordinates, orientation, and angle of view of the sub-virtual camera input from the operation device 25a, or attribute data of the debug light source in association with the frame counter. As the inspection history, data on an electronic bookmark, an inspection date and time, an inspection person in charge, etc., regarding a location where the virtual model is found to be incomplete in the inspection can be recorded.

  The external recording medium drive 24 reads data recorded on an external recording medium such as a DVD-ROM or a CD-ROM, and transmits the data to the bus 28. In the present invention, a virtual model of a diversion source CG moving image. And the inspection target ROM 24a in which the attribute data of the main virtual camera 13b, which is a virtual camera for inspection, are used as this external recording medium.

  Note that the data of the virtual model includes time series data (data associated with the frame counter value) about the position, orientation, orientation, light source position, color, and luminous intensity of one or more objects constituting the virtual model. Is recorded, and as the attribute data of the main virtual camera 13b, time series data such as the position, orientation, angle of view, and roll of the main virtual camera 13b are recorded. In the present embodiment, among the attribute data of the main virtual camera 13b, the data regarding the position, orientation, and roll is set to be the same as the virtual camera in the diversion source CG video, and the data regarding the angle of view of the main virtual camera 13b. Is set in accordance with the specifications of the display device of the diversion destination.

  The input control IC 25 generates various operation signals and transmits them to the bus 28 in response to predetermined operation inputs to the operation device 25 a such as a keyboard, a mouse, and a dedicated controller. In the present embodiment, the input control IC 25 responds to different operation inputs to the operation device 25a by switching signals (a signal for instructing switching from the main image to the sub image, and switching from the sub image to the main image). ), Sub-virtual camera control signal (signal for instructing position movement, direction change, and angle of view change in the virtual three-dimensional space of the sub-virtual camera 13c), debug light source control signal (generation and deletion of debug light source) And a signal designating attributes such as the position, color tone, and luminous intensity of the debugging light source).

  The image composition IC 26 renders an image captured by the main virtual camera 13b or the sub virtual camera 13c of a virtual model constructed based on data recorded in the inspection target ROM 24a. The rendered image is transmitted to the display device 26a at a predetermined frequency and reproduced as a moving image. The display device 26a is a device for visually displaying a CG moving image such as a CRT or a liquid crystal monitor, and the display screen does not necessarily have the same specification (for example, vertical and horizontal) as the display device used at the diversion source or the diversion destination. Ratio) etc.

  The voice synthesis IC 27 receives voice data such as BGM and sound effects recorded in the inspection target ROM 24a from the bus 28, synthesizes them in an analog format, and outputs the synthesized data to the speaker 27a as an analog signal. When the person in charge of inspection knows the CG video of the diversion source, by outputting BGM or sound effects from the speaker 27a during the inspection of the CG video, the sub-image being inspected becomes the CG of the diversion source. You can expect effects such as being able to grasp sensibly which scene in the movie corresponds.

  FIG. 4 is an explanatory diagram showing a functional block 30 realized by the image display device 20 executing the image display program of the present invention recorded in the nonvolatile memory 23.

  As illustrated, the functional block 30 includes a virtual model generation unit 31, a main virtual camera control unit 32, a main image generation unit 33, an image switching unit 34, a sub virtual camera control unit 35, a sub image generation unit 36, and an image selection. Unit 37, debug light source control unit 38, sub virtual camera history recording unit 39, and flag recording unit 40.

  The virtual model generation unit 31 constructs a virtual model in the virtual three-dimensional space by arranging one or a plurality of objects and / or light sources according to data related to the virtual model recorded in the inspection target ROM 24a for each frame time. Further, when the debug light source flag in the flag recording unit 40 is set to ON, the virtual model generation unit 31 corrects by adding a debug light source having an attribute set by the debug light source control unit 38 to the virtual model. Generate a virtual model.

  The main virtual camera control unit 32 performs attributes such as the position, direction, angle of view, and roll of the main virtual camera 13b in the virtual three-dimensional space according to the data related to the main virtual camera 13b recorded in the inspection target ROM 24a for each frame time. Set.

  The main image generation unit 33 generates a main image by rendering the virtual model constructed by the virtual model generation unit 31 according to the attribute of the main virtual camera 13b set by the main virtual camera control unit 32.

  When the switching signal from the main image to the sub image generated by the input control IC 25 is received, the image switching unit 34 turns on the sub image flag in the flag recording unit 40 and switches from the sub image to the main image. When the signal is received, the sub-image flag in the flag recording unit 40 is set to OFF. In the present embodiment, the sub image flag in the initial state is set to off.

  The sub-virtual camera control unit 35 operates on condition that the sub-image flag in the flag recording unit 40 is set to ON, and in accordance with the sub-virtual camera control signal generated by the input control IC 25, the sub-virtual camera 13c performs a virtual operation. Attributes such as position, direction, and angle of view in a three-dimensional space are changed. Thereby, the sub virtual camera 13c moves in the virtual three-dimensional space, or the direction and angle of view of the sub virtual camera 13c are changed. In the present embodiment, the attribute of the sub virtual camera 13c is always kept the same as the attribute of the main virtual camera 13b while the sub image flag is off. Therefore, the sub image flag is switched from off to on. If so, the sub-virtual camera control unit 35 starts processing from a state in which the position, direction, and angle of view of the sub-virtual camera 13c are the same as the position, direction, and angle of view of the main virtual camera 13b at that time. To do.

  The sub-image generation unit 36 generates a sub-image by rendering the virtual model constructed by the virtual model generation unit 31 according to the attribute of the sub-virtual camera 13c set by the sub-virtual camera control unit 35.

  The image selection unit 37 receives the main image and the sub image from the main image generation unit 33 and the sub image generation unit 36, and displays the sub image when the sub image flag in the flag recording unit 40 is set to ON. In other cases, the main image is transmitted to the display device 26a.

  The debug light source control unit 38 operates on the condition that the sub-image flag in the flag recording unit 40 is set to ON, and when receiving a signal instructing generation of the debug light source from the input control IC 25, the flag light recording unit When the debug light source flag in the unit 40 is set to ON and a signal instructing the deletion is received, the debug light source flag in the flag recording unit 40 is set to OFF. Further, when a signal specifying the attribute of the debug light source is received from the input control IC 25, processing for setting the attribute of the debug light source is executed according to this signal.

  The sub virtual camera history recording unit 39 operates on condition that the sub image flag of the flag recording unit 40 is set to ON, and the attribute data of the sub virtual camera 13c set by the sub virtual camera control unit 35, or Further, the attribute data of the debug light source set by the debug light source control unit 38 is recorded in the sub virtual camera history recording area of the nonvolatile memory 23 in association with the frame counter value.

  Hereinafter, the operation of the image display device 20 will be described with reference to the flowchart of FIG.

  When the inspection target ROM 24a is inserted into the external recording medium drive 24 while the power of the image display device 20 is turned on, the program of the present invention is started, and initialization (step 1) and increment processing (step 1) of the frame counter value T are performed. After step 2) is executed, the virtual model generation unit 31 arranges one or more objects and light sources in the virtual three-dimensional space according to the virtual model data for the frame counter value T recorded in the inspection target ROM 24a. Then, a virtual model is constructed in the virtual three-dimensional space (step 3).

  Subsequently, the main virtual camera control unit 32 sets the position, direction, angle of view, and roll of the main virtual camera 13b in the virtual three-dimensional space according to the virtual camera attribute data regarding the frame counter value T recorded in the inspection target ROM 24a. (Step 4).

  Subsequently, the main image generation unit 33 generates a main image by rendering the virtual model generated in step 3 according to the attribute of the main virtual camera 13 b set in step 4, and transmits this to the image selection unit 37. (Step 5).

  Subsequently, the sub-image flag in the flag recording unit 40 is checked (step 6). If it is set to ON, the process proceeds to step 7.

  In step 7, the debug light source flag in the flag recording unit 40 is checked, and if it is set to ON, the virtual model generation unit 31 selects a debug light source according to the attribute set by the debug light source control unit 38 in step 3. A corrected virtual model is generated by arranging in the virtual model constructed in (Step 8).

  Subsequently, the sub virtual camera control unit 35 sets the attribute data of the sub virtual camera 13c according to the sub virtual camera control signal transmitted from the input control IC 25 (step 9), and the sub image generation unit 36 further performs step 7 of step 7. A sub-image is generated by rendering the virtual model constructed in step 3 or the corrected virtual model generated in step 8 according to the attribute data of the sub-virtual camera 13c set in step (step 10).

  The sub image generated in step 10 is transmitted to the image selection unit 37, and the image selection unit 37 transmits this to the display device 26a to display a CG moving image based on the sub image (step 11).

  Thereafter, the debug light source control unit 38 executes processing for switching on / off of the debug light source flag and setting the attribute data of the debug light source in the flag recording unit 40 in accordance with the debug light source control signal transmitted from the input control IC 25 (step 12) The secondary virtual camera history recording unit 39 records the secondary virtual camera 13c and the debug light source attribute data set in Steps 9 and 12 in the nonvolatile memory 23 in association with the frame counter value T (Step 13). .

  On the other hand, if the sub-image flag is set off in step 6, the process proceeds to step 14, and the image selection unit 37 sends the main image received from the main image generation unit 33 in step 5 to the display device 26a. The transmitted CG moving image based on the main image is displayed (step 14).

  After the process of step 13 or 14 is executed, it is checked whether or not the image switching unit 34 has received a switching signal (step 15). If received, the flag recording unit 14 determines whether the switching signal has been received. After the process of setting the sub-image flag to ON or OFF is executed (step 16), if not received, the CG moving image is displayed for the next frame counter value T without executing step 16. The processing is returned to step 2.

  The present invention has been described above based on the preferred embodiment, but the present invention is not limited to this embodiment, and various modifications can be made within the scope of the claims.

  For example, in the above-described embodiment, the case where the image display program according to the present invention is recorded in the nonvolatile memory 23 has been described. However, the image display program may be recorded in the inspection target ROM 24a which is an external recording medium. is there.

  Further, in the above embodiment, the case where the main image is rendered by the main virtual camera 13b provided with an angle of view that matches the display screen of the diversion destination has been described. However, the image rendered by the diversion source virtual camera is the main image. It can also be used as an image.

  In the above embodiment, the case where the image display device 20 includes the image switching unit 34 so that the inspection of the main image and the sub image can be executed by the single display device 26a has been described. However, the image switching unit 34 is omitted. For example, the main image and the sub image are simultaneously displayed on each of the two display areas on the display screen of the two display devices 26a or the single display device 26a so that the CG moving image is inspected. It is also possible to make it.

  In the above embodiment, the case where the attribute data of the main virtual camera 13b at the time of switching to the sub image is given as the initial value of the attribute data of the sub virtual camera 13c is exemplified. When the person inspecting the inspection notices any defect, it is intended to enable smooth inspection by the sub-image of the part in the virtual model displayed in the main image, The initial value of the attribute data of the secondary virtual camera 13c may be set in any other manner such as starting from the origin in the virtual three-dimensional space.

  Further, the image display apparatus of the present invention is not limited to each configuration shown in the above embodiment, and may be any publicly known means such as a means for debugging a virtual model or a main virtual camera, a means for rewinding a CG movie, or a means for fast-forwarding. It is also possible to additionally provide these means.

(A) is explanatory drawing which shows the positional relationship of the virtual model 10 comprised by the object arrange | positioned in virtual three-dimensional space, and virtual camera 13a-13c. (B) is explanatory drawing which shows the scene assumed in production of the said virtual model. (A)-(c) is explanatory drawing which shows the images 10a-10c obtained by rendering the virtual model 10 of Fig.1 (a) by virtual camera 13a-13c, respectively. Explanatory drawing which shows the hardware constitutions of the image display apparatus 20 which concerns on one Embodiment of this invention. Explanatory drawing which shows the functional block 30 implement | achieved in the image display apparatus 20 which concerns on one Embodiment of this invention. The flowchart which shows the flow of the process performed in the image display apparatus 20 which concerns on one Embodiment of this invention.

Explanation of symbols

10 virtual models 10a to 10c image 11 human object 12 fence object 13a diversion source virtual camera 13b main virtual camera 13c sub virtual camera 20 image display device 21 CPU
22 Volatile memory 23 Non-volatile memory 24 External recording medium drive 24a ROM to be inspected
25 Input control IC
25a Operation device 26 Image composition IC
26a Display device 27 Speech synthesis IC 27
27a Speaker 28 Bus 31 Virtual model generation unit 32 Main virtual camera control unit 33 Main image generation unit 34 Image switching unit 35 Sub virtual camera control unit 36 Sub image generation unit 37 Image selection unit 38 Debug light source control unit 39 Sub virtual camera history recording Section 40 Flag recording section

Claims (7)

An image display device for inspecting the virtual model in a CG video generated by rendering a virtual model composed of one or a plurality of objects arranged in a virtual three-dimensional space by a main virtual camera,
An operation means for accepting an operation input;
Main image generation means for generating a main image by rendering the virtual model by the main virtual camera;
Sub virtual camera control means for setting attributes of the sub virtual camera including at least the position and direction in the virtual three-dimensional space in response to an operation signal to the operation means;
Sub-image generating means for generating a sub-image by rendering the virtual model by the sub-virtual camera;
An image display device comprising: display means for visually displaying the main image and the sub-image.   The image display according to claim 1, further comprising switching means for switching the display on the display means between the main image and the sub-image in response to an operation input to the operation means. apparatus. When switching from the main image to the sub-image by the switching means,
The image display apparatus according to claim 1, wherein the same attribute as the attribute of the main virtual camera at the time of switching is given as an initial value of the attribute of the sub virtual camera.   4. The data about the virtual model and the main virtual camera is recorded in a read-only memory, and the data about the sub virtual camera is recorded in a rewritable memory. The image display device according to claim 1. A debug light source control unit configured to set an attribute of a debug light source arranged in a virtual three-dimensional space in response to an operation input to the operation unit;
The said sub image is produced | generated by rendering with the said sub virtual camera the correction | amendment virtual model formed by adding the said debug light source to the said virtual model. The image display device according to one item.   The image display according to claim 1, further comprising: a sub virtual camera history storage unit that records the attributes of the sub virtual camera received by the sub virtual camera control unit in time series. apparatus. An image display program for inspecting the virtual model in a CG moving image generated by rendering a virtual model composed of one or a plurality of objects arranged in a virtual three-dimensional space by a main virtual camera,
On the computer,
Control to generate a main image by rendering the virtual model by the main virtual camera;
Control for setting attributes of the sub-virtual camera including at least the position and direction in the virtual three-dimensional space in accordance with a signal from the operation means;
Control to generate a sub-image by rendering the virtual model by the sub-virtual camera;
An image display program for causing the display unit to display the main image and the sub-image.

Images