JP2002170132A - Information presenting device and method and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an accurate viewing point position of an observer and to accurately position a virtual space and a real space relative to each other. SOLUTION: A plurality of points where information can be presented is provided in advance and the observer is urged to stand at either of those positions with accuracy. An information presenting device specifies the ID of the point where the observer stands, based on an input made by the observer himself or on the observer's position information. As a result, the information presenting device obtains from the ID of the point the viewing point position of the observer matching the ID. Based on the measurements of the azimuth and attitude of the observer at the viewing point position and on the viewing point obtained, an MR image is created and presented to the observer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information presenting apparatus for presenting an image corresponding to a viewpoint position and an azimuth posture of an observer at a plurality of points provided in a field in advance, a method thereof, and a storage medium.

[0002]

2. Description of the Related Art In recent years, Mixed Reality (Mixed Re
system (MR) has been proposed. MR is a technology that complements and enhances information in both spaces by superimposing and presenting to a viewer a virtual space generated by a computer in a state where the virtual space is three-dimensionally aligned with a real space. MR includes an optical see-through system in which a virtual space image generated by a computer is superimposed on a real space visually observed by an observer through a transmission type display device, and a photographing means such as a camera (in many cases, the observer himself / herself). There is a video see-through method in which a virtual space generated by a computer is superimposed and drawn on a real space image captured by the camera (moving in conjunction with the movement of the viewpoint) and presented to an observer. In the present specification, hereinafter, an image (a virtual space image in an optical see-through system and an image in which a virtual space image is superimposed and drawn on a real space image in a video see-through system) presented to an observer in both systems are collectively referred to as M.
It is called an R image. Further, in the present specification, the viewpoint of the observer himself in the optical see-through system and the viewpoint of an imaging unit such as a camera in the video see-through system are collectively referred to as an observer viewpoint or a viewpoint of the observer.

On the other hand, due to the improvement of computer performance and miniaturization,
Realization of a wearable system in which a user wears a computer, an information display device, and the like is being studied. Wearable systems have the advantage of being outdoors and not limiting their use.

An MR using this wearable system
Research has also been carried out to realize technology, one of which is described in the literature "T. Hollerer, S. Feiner, and J. Pavlik:" Situated
documentaries: embedding multimedia presentations
in the real world, "Proc. ISWC'99, pp. 79-86, 199
9. " The MR system disclosed in this document is a system that provides an observer with guidance on the campus,
An optical see-through HMD (Glass Positioning System, etc.) generated by the GPS (Global Positioning System), inclinometer, and geomagnetic sensor based on the observer's viewpoint position and azimuth orientation information Head Mounted Di
splay; head-mounted display). As a result, the observer can, for example, visually recognize the school building existing in the real space and the school building name aligned and displayed on the display at the same time, and can receive guidance in real time while walking on the premises.

[0005]

In the study of the realization of the MR technology by the wearable system, it is necessary to accurately align the virtual space and the real space with a small and non-installed system. Become. This alignment problem can be reduced to how to accurately obtain the position and orientation of the observer's viewpoint. However, there is no small, non-installed, high-precision position measurement device, and how to obtain an accurate viewpoint position. The question is how to get it. In the MR system disclosed in the above document,
Although GPS is used as an observer's viewpoint position measuring device, its accuracy is insufficient, and the positioning problem has not been solved.

The present invention has been made in view of the above problems, and has as its object to acquire an accurate viewpoint position of an observer. It is another object of the present invention to perform accurate positioning between a virtual space and a real space.

[0007]

In order to achieve the object of the present invention, for example, an information presenting apparatus of the present invention has the following arrangement.

That is, an information presenting apparatus for presenting an image in accordance with a viewpoint position and an azimuth posture of an observer at a plurality of points provided in a field in advance, storing a table of the observer's viewpoint positions at the points. Viewpoint position storage means to perform, viewpoint position specification means for specifying the viewpoint position of the observer from the viewpoint position storage means according to the information for specifying the point where the observer is located, and azimuth orientation of the viewpoint of the observer Viewpoint azimuth and posture measurement means for measuring, azimuth and posture of the observer's viewpoint by the viewpoint azimuth and posture measurement means, and image generation means for generating an image corresponding to the observer's viewpoint position by the viewpoint position specifying means. With
The image is presented to the observer via predetermined display means.

Further, there is provided input means by which the observer can input information for instructing start and end of information presentation.

[0010] Further, there is provided input means by which the observer can input information for specifying the point.

[0011] Further, input means is provided at the point, and the observer can input information for instructing start and end of information presentation, and the viewpoint position specifying means determines at which point the input means is installed. Can be recognized.

[0012] Further, there is provided input means by which the observer can input information for specifying the observer, and the viewpoint position of the observer is specified from the viewpoint position storage means in accordance with the information for specifying the observer. A viewpoint position specifying unit is provided.

Further, there is provided observer position measuring means for measuring the approximate position of the observer.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail according to preferred embodiments with reference to the accompanying drawings.

[First Embodiment] The information presenting apparatus of the present embodiment is an apparatus for allowing a viewer to experience mixed reality, and the viewer has one of a number of predetermined points. By fixing the viewpoint position while standing at a certain point, a mixed reality that can be looked around based on the viewpoint position and the azimuth posture at that point, that is, can be looked around is obtained.

FIG. 2 shows each point in the field 200. In the figure, a field 200 is an area irrespective of whether it is indoors or outdoors. In FIG.
The y coordinate value is an altitude value. This field 20
Each point (point) A, B, and C in 0 has the same altitude value (10), but may have a different value at each point. An information presenting apparatus and method for providing mixed reality to an observer in the field 200 according to the present embodiment will be described below.

FIG. 1 is a block diagram showing a basic configuration of the information presenting apparatus according to the present embodiment.

Reference numeral 108 denotes an input unit constituted by an information input device such as a keyboard, which specifies an instruction to start information presentation (presentation start instruction) and an instruction to end information presentation (presentation end instruction), and specifies points. ID (point ID) to identify and the ID specifying the observer 105 (observer I
D) can be entered. When the digitized point ID and the observer ID are stored in a readable storage medium, a storage medium reader that reads the digitized point ID and the observer ID from this storage medium is added to the input unit 108. Is also good.

Reference numeral 100 denotes an observer position measuring unit constituted by a measuring device such as a GPS or a computer, and measures the position of the observer 105. The measurement of the position of the observer 105 does not need to have sufficient accuracy, and it is sufficient that the measurement has an accuracy (rough accuracy) that does not hinder the processing described below. When the input unit 108 is provided, the observer position measuring unit 100 is not necessarily required.

Further, the observer position measuring unit 100 is constituted by a real space image capturing device such as a CCD camera to detect a landmark (an object whose absolute position is known or its characteristic point) of the real space image. The position of the observer may be calculated from the similarity, or the position of the observer may be calculated from the similarity between the real space image around the observer and the real space image whose shooting position stored in advance is known. .

Further, the observer position measuring section 100 is constituted by a signal receiving device, receives a signal emitted from a signal transmitter placed in the real space, and obtains the position of the observer from the content of the received signal. Is also good. In addition, any mechanism that acquires the position of the observer may be used.

A viewpoint position database 107 stores the two tables shown in FIGS. FIG. 3 shows a table in which the coordinate values of each point corresponding to each point ID are described, and FIG. 4 shows the absolute height of the viewpoint of each observer corresponding to the observer ID of the observer including the observer 105 (FIG. 2 is described on a scale in the coordinate system shown in FIG. 2).

Reference numeral 101 denotes an observer position information and viewpoint position information recognition unit which receives a presentation start instruction from the input unit 108,
The operation of each unit except the observer position measuring unit 100, the input unit 108, and the observer position information & viewpoint position information recognizing unit 101 is started. Also, the observer position information & viewpoint position information recognition unit 101 inputs a point ID and an observer ID from the input unit 108.
And holds it, and outputs it to the viewpoint position information extracting unit 102. If the observer ID cannot be received, the default ID is output to the viewpoint position information extracting unit 102 as the observer ID. In this case, the observer position measuring unit 100 may not be provided.

However, the present embodiment is not limited to this,
In addition, for example, observer position information & viewpoint position information recognition unit 1
01 is the observer 1 input from the observer position measuring unit 100 instead of receiving the presentation start instruction from the input unit 108.
05 is within a predetermined distance from a point whose coordinates are stored in the viewpoint position database 107, and whether or not the moving speed of the observer 105 is lower than or equal to a predetermined moving speed for a certain period of time. Judge and observer 105
Is within a predetermined distance from a certain point and the moving speed of the observer 105 is equal to or lower than a predetermined moving speed for a certain period of time (hereinafter, this case is referred to as “being at a point”). Unit 100, input unit 108,
The operation of each unit except the observer position information & viewpoint position information recognition unit 101 may be started. In this case, the presentation start instruction may not be input from the input unit 108. Similarly, the observer position information & viewpoint position information recognizing unit 101 includes the input unit 1
Instead of receiving the point ID from 08, the point ID of the point closest to the viewpoint position of the observer 105 received from the observer position measurement unit 100 is obtained from the viewpoint position database 107 and output to the viewpoint position information extraction unit 102. Is also good. In this case, the input of the point ID from the input unit 108 may not be required.

Reference numeral 102 denotes the point ID and the observer I output from the observer position information & viewpoint position information recognition unit 101.
The viewpoint position coordinates based on D are stored in the viewpoint position database 10.
The viewpoint position information extracting unit specified from step 7 outputs the specified viewpoint position coordinates to the mixed reality space generating unit 103.

Reference numeral 106 denotes a viewpoint orientation and posture measurement unit that measures the orientation and orientation of the viewpoint of the observer 105, and is configured by an orientation and orientation measurement sensor or device (azimuth and orientation measurement device) such as a geomagnetic sensor or a gyro sensor. Since these azimuth and posture measuring devices cannot be installed at the viewpoint of the observer, the outputs of these azimuth and posture measuring devices do not match the viewpoint azimuth and orientation of the observer. Therefore, the viewpoint orientation / posture detection unit 106
Calculates the viewpoint orientation of the observer by correcting the output of the orientation measurement device, and outputs the result to the mixed reality space generation unit 103.

For example, as shown in FIG. 5, when a gyro sensor as an azimuth / posture measuring device is fixed to the head of the observer 105, the azimuth / posture relationship between the azimuth / posture measuring device 106 and the viewpoint of the observer 105 is kept constant. By applying a fixed conversion formula to the output result of the azimuth and orientation measurement device,
The viewpoint posture of the observer can be calculated. Details of each unit in the figure will be described later.

Further, the viewpoint orientation and posture measurement unit 106 is constituted by a real space image capturing device, and recognizes the position of a landmark (an object whose absolute posture is known or its feature point) on the captured image in the real space image. Thus, the viewpoint orientation of the observer can be calculated. In addition, any mechanism may be used as long as the mechanism acquires the viewpoint orientation of the observer.

Reference numeral 103 denotes a mixed reality space generation unit for generating an image (MR image) for causing the observer 105 to experience mixed reality, and the viewpoint position coordinates of the observer 105 from the viewpoint position information extraction unit 102 and the viewpoint position An MR image is generated based on the azimuth and orientation of the observer 105 from the azimuth and orientation measurement unit 106. Note that the mixed reality space generation unit 103 is configured by a normal computer, and outputs the generated MR image to the image display unit 104.

Reference numeral 104 denotes an image display unit for presenting the MR image input from the mixed reality space generation unit 103 to the observer 105. The image display unit 104 is configured by an image display device such as an HMD or a computer display. To be displayed. Any of a video see-through method and an optical see-through method may be used as a method of presenting an MR image.

Reference numeral 105 denotes an observer.

A specific flow up to presenting an MR image to an observer using the information presenting apparatus of the present embodiment having the above configuration will be described below with reference to the flowchart of the same process shown in FIG. Note that the processing of the information presentation device in the present embodiment is processing after step S200.

In the following, it is assumed that the observer 105 is present in the field 200 as an example. Each point A,
B and C have marks such as footprints indicating that the information presenting device in the present embodiment can be used, and a point ID for specifying the point is explicitly assigned. In step S100, the observer 105
Choose one of the points and stand exactly at that location.

As shown in FIG. 5, the observer 105 wears a PC, which is a part of the information presentation device, on his back, and has a wireless keyboard as an input unit 108 in his hand. Also,
GPS is installed as the observer position measuring unit 100,
The observer position is always transmitted to the observer position information & viewpoint position information recognition unit 101 by the observer position measuring unit 100. Also, as shown in FIG.
HMD attached to the head as 4
The gyro sensor is attached to the head as 06.

Next, in step S200, the observer 1
05 inputs the point ID of the point where the user stands and the observer ID attached to the observer to the observer position information & viewpoint position information recognition unit 101 via the input unit 108. If the observer ID is not input by the observer in step S200, the default ID held in advance is set as the observer ID.

In step S200, the observer position information and viewpoint position information recognizing unit 101 obtains the position of the observer 105 from the observer position measuring unit 100, and based on this position information, the position of the point at which the observer stands is obtained. A point ID may be obtained. That is, the observer 105 is obtained from the table shown in FIG.
Is identified, and the identified point is determined to be a point on which the observer stands, and the point ID is determined.
To win.

Next, in step S300, the observer gives a presentation start instruction via the input unit 108 to the observer position information &
The information is input to the viewpoint position information recognition unit 101.

In step S300, the observer position information and viewpoint position information recognizing unit 101 obtains the position of the observer 105 from the observer position measuring unit 100, and determines the timing of starting information presentation based on this position information. Then, a presentation start instruction may be generated and input to the user. That is, the point closest to the observer 105 is specified from the table shown in FIG. 3 stored in the viewpoint position database 107, and whether or not the specified point is within a predetermined distance from the observer 105 is determined. to decide. Further, it is determined whether or not the moving speed of the observer 105 is equal to or lower than a predetermined moving speed for a certain time by calculating from the moving distance of the observer 105 within the certain time. For example, if the observer 105 exists within a predetermined distance from the point B and at a predetermined speed or less for a predetermined time, the observer position information & viewpoint position information recognition unit 101 determines that "the observer 105 is at the point B". Judgment, as described above, generates a presentation start instruction by itself,
Type in yourself.

Step S200 and step S300
May be performed first or simultaneously. In step S200, when the observer 105 inputs the point ID and the observer ID, the presentation start instruction may be automatically input simultaneously. Also,
When the input unit 108 is installed at the point where the observer stands, in step S300, the observer 105 is set.
When the user inputs the presentation start instruction, the observer position information & viewpoint position information recognizing unit 101 can determine from which input unit the information has been input by using a unique code number of the input unit 108, for example. You may do so. By doing so, the observer 105 only needs to input the observer ID by connecting the input unit to the information presenting device to which the observer 105 is attached. The input observer ID is input, and the point where the input unit 108 is installed is recognized from the unique code number of the input unit 108.

Next, in step S400, the observer position information & viewpoint position information recognizing unit 101 includes the observer position measuring unit 100, the input unit 108, and the other units (excluding the observer position information & viewpoint position information recognizing unit 101). The operation of the starting unit) is started, and the point ID and the observer ID are sent to the viewpoint position information extracting unit 102.

Next, in step S500, the viewpoint position information extracting unit 102 acquires the viewpoint position coordinates of the observer from the viewpoint position database 107 based on the input point ID and observer ID. For example, when the observer 105 is at point A (point A), the coordinate value (100, 10, 15) of point A is obtained from the table shown in FIG.
Next, referring to the observer ID, the height of the observer's viewpoint is acquired from the viewpoint position database 107 as the observer's viewpoint position coordinates. For example, when the observer ID is 0002, the height of the observer's viewpoint can be specified as 180 from FIG. As a result, when the observer whose observer ID is 0002 is at point A, the viewpoint position of this observer is
It is calculated by the coordinate value of the point A + the height of the viewpoint of the observer specified by the observer ID 0002, and as a result (100, 1
90, 15). In this way, the viewpoint position (viewpoint coordinate) of each observer at each point can be obtained.

In step S600, the viewpoint azimuth and orientation measurement unit 106 measures the observer's azimuth and orientation.

Next, in step S700, the azimuth and orientation of the viewpoint of the observer 105 measured by the azimuth and orientation measurement unit 106 in step S600 and the viewpoint position coordinates obtained by the viewpoint position information extraction unit 102 in step S500 are mixed reality space. Send to generating section 103.

Next, in step S800, the mixed reality space generating unit 103 generates an MR image to be presented to the observer based on the observer's viewpoint coordinate and azimuth / posture.

Next, in step S900, the HMD as the image display unit 104 outputs an MR image. As a result, at the point where the observer 105 is, the observer 105 can see the MR image based on his / her own viewpoint position and azimuth posture via the HMD. Note that the method of generating an MR image is not in the category of the present embodiment, and thus the description is omitted here.

Next, in step S1000, it is confirmed whether or not there is an instruction to end presentation of information. When the presentation end instruction is confirmed, specifically, when the observer 105 inputs the presentation end instruction to the input unit 108, the observer position measurement unit 1
00, the input unit 108, and the operation of each unit except the observer position information and viewpoint position information recognition unit 101 are stopped, and the process proceeds to step S1100. If the presentation end instruction has not been input to the input unit, the process returns to step S600.

In step S1000, it is determined whether or not the observer 105 is at the same point based on the measurement result of the observer position measurement unit 100. Causes
The operation of each unit except the observer position measuring unit 100, the input unit 108, and the observer position information & viewpoint position information recognizing unit 101 may be stopped, and the process may proceed to step S1100. In this case, when it is determined that they are at the same point, step S600 and subsequent steps are repeatedly executed.

In step S1100, it is confirmed whether to end the entire system. If not, the process returns to step S100.

As described above, when generating an MR image based on the viewpoint position and azimuth posture of the observer at a plurality of points provided in the field in advance, according to the information presenting apparatus and method of the present embodiment, The object to be measured is only the observer's viewpoint orientation, and the observer's viewpoint position can be specified by the point ID of the point where the observer is present without measuring. As a result, it is possible to generate an MR image in which accurate positioning between the real space and the virtual space is realized and present it to the observer without preparing a highly accurate viewpoint position measuring device.

Also, when the equipment cannot be installed outdoors,
Even if a plurality of points are scattered over a wide range, an MR image in which the real space and the virtual space are accurately aligned can be generated and presented to the observer.

The name of the observer may be used as the observer ID. In that case, the observer ID described in FIG. 4 is changed to the observer's name. Further, either the observer ID or the observer's name may be selectable.

In the present embodiment, the observer ID and the point ID are manually input by using a wireless keyboard as the input unit 108. However, the input unit 108 and the microphone are used for inputting by voice. It may be configured with a recognition unit for recognition. When inputting the observer ID and the point ID using a barcode, the input unit 108 may be configured with a barcode reader. Further, the input unit 108 is configured by a signal transmitter installed at a plurality of points provided in the field in advance and a signal receiver worn by an observer, and the observer 105 presses a switch of the signal transmitter to set the point. The ID may be obtained.

In the present embodiment, the point ID and the presentation start instruction (presentation end instruction) are manually input through the input unit 108. However, as described above, the observer position measurement unit 1 is input.
00 may be used (hereinafter, non-manual). The input of the point ID and the presentation end instruction (presentation end instruction) may be manual or non-manual, or may be a combination thereof.

[Other Embodiments] An object of the present invention is to supply a storage medium (or a recording medium) in which a program code of software for realizing the functions of the above-described embodiments is recorded to a system or an apparatus, and to provide the system or the apparatus. It is needless to say that the present invention is also achieved when the computer (or CPU or MPU) of the device reads out and executes the program code stored in the storage medium. In this case, the program code itself read from the storage medium implements the functions of the above-described embodiment, and the storage medium storing the program code constitutes the present invention. By executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also an operating system (OS) running on the computer based on the instruction of the program code. Do some or all of the actual processing,
It goes without saying that a case where the function of the above-described embodiment is realized by the processing is also included.

Further, after the program code read from the storage medium is written into the memory provided in the function expansion card inserted into the computer or the function expansion unit connected to the computer, the program code is read based on the instruction of the program code. Needless to say, the CPU included in the function expansion card or the function expansion unit performs part or all of the actual processing, and the processing realizes the functions of the above-described embodiments.

When the present invention is applied to the storage medium, the storage medium stores program codes corresponding to the above-described processing (the processing in step S200 and subsequent steps in the flowchart shown in FIG. 6). Will be.

[0057]

As described above, according to the present invention, an accurate viewpoint position of the observer can be obtained. Also,
Accurate positioning between the virtual space and the real space can be performed.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a basic configuration of an information presentation device according to a first embodiment of the present invention.

FIG. 2 is a diagram showing each point in a field 200.

FIG. 3 is a diagram showing a table in which coordinate values of each point corresponding to each point ID are described.

FIG. 4 is a diagram showing a table in which absolute heights of viewpoints of observers corresponding to observer IDs of observers including an observer 105 are described.

FIG. 5 is a diagram illustrating an observer 105 and each device equipped with the observer 105.

FIG. 6 shows the first embodiment of the present invention,
It is a flowchart of a process until presenting an R image.

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Claims (21)

[Claims] 1. An information presenting apparatus for presenting an image corresponding to an observer's viewpoint position and azimuth posture at a plurality of points provided in a field in advance, wherein a table of observer's viewpoint positions at the points is stored. Viewpoint position storage means, and viewpoint position specifying means for specifying the viewpoint position of the observer from the viewpoint position storage means according to the information for specifying the point at which the observer is located. Viewpoint azimuth measurement means for measuring, azimuth attitude of the observer's viewpoint by the viewpoint azimuth and attitude measurement means, and image generation means for generating an image according to the observer's viewpoint position by the viewpoint position specifying means. An information presentation device, comprising: presenting the image to the observer via predetermined display means. 2. The information presentation apparatus according to claim 1, further comprising an input unit that allows the observer to input information for instructing start and end of information presentation. 3. The information presentation apparatus according to claim 1, further comprising an input unit that allows the observer to input information for specifying the point. 4. An input device installed at the point and capable of inputting information for instructing start and end of information presentation by the observer, wherein the viewpoint position specifying device is provided at any point where the input device is installed. The information presentation device according to claim 1, wherein the information presentation device can recognize whether the information is present. 5. An input means for allowing the observer to input information for specifying the observer, wherein the viewpoint position of the observer is stored from the viewpoint position storage means in accordance with the information for specifying the observer. The information presentation apparatus according to any one of claims 1 to 4, further comprising a viewpoint position specifying unit for specifying. 6. The information presentation apparatus according to claim 5, wherein said viewpoint position storage means stores a table of the viewpoint height of the observer as the table. 7. The information presentation apparatus according to claim 1, wherein the viewpoint position storage unit stores a table of the position of the point as the table. 8. The information presentation apparatus according to claim 6, wherein the viewpoint position of the observer is a sum of the position of the point and the viewpoint height of the observer. 9. The information presenting apparatus according to claim 1, further comprising observer position measuring means for measuring a rough position of the observer. 10. The viewpoint position specifying means determines whether or not the observer is in the vicinity of a point based on the approximate position of the observer by the observer position measuring means. 10. The information presentation apparatus according to claim 9, wherein a timing to start or end the image presentation to the observer is determined. 11. The method according to claim 11, wherein the viewpoint position specifying unit obtains, from the table, information for specifying a position of a point where the observer stands based on the approximate position of the observer by the observer position measurement unit. Claim 9
Or the information presentation device according to 10. 12. The information presentation apparatus according to claim 1, wherein said viewpoint orientation and posture measurement means includes a gyro sensor. 13. The information presentation device according to claim 1, wherein the predetermined display unit includes an HMD. 14. An information presenting method for presenting an image corresponding to a viewpoint position and an orientation of an observer at a plurality of points provided in a field in advance, wherein the image is presented in accordance with information specifying a point where the observer is located. A viewpoint position specifying step of specifying a viewpoint position of the observer from a predetermined viewpoint position storing means for storing a table of viewpoint positions of the observer at the points; and a viewpoint direction for measuring an orientation and posture of the viewpoint of the observer. A posture measurement step, comprising: an azimuth posture of the viewpoint of the observer in the viewpoint azimuth and posture measurement step; and an image generation step of generating an image according to the position of the viewpoint of the observer in the viewpoint position identification step. An information presentation method, wherein an image is presented to the observer via a predetermined display means. 15. The information presentation method according to claim 14, further comprising an observer position measuring step of measuring a rough position of the observer. 16. In the viewpoint position specifying step, it is determined whether or not the observer is in the vicinity of a point based on the approximate position of the observer in the observer position measuring step. 16. The information presentation method according to claim 15, wherein a timing of starting or ending the image presentation to the observer is determined. 17. In the viewpoint position specifying step, information for specifying a position of a point at which the observer stands based on the approximate position of the observer in the observer position measuring step is obtained from the table. 17. The information presentation method according to claim 15, wherein: 18. A storage medium for storing a program code of an information presenting process for presenting an image corresponding to a viewpoint position and an azimuth posture of an observer at a plurality of points provided in a field in advance, wherein the observer is present. A program code for a viewpoint position specifying step of specifying a viewpoint position of the observer from a predetermined viewpoint position storage unit that stores a table of viewpoint positions of the observer at the point according to the information for specifying the point; A program code for a viewpoint orientation and posture measurement step of measuring the orientation and orientation of the viewpoint of the observer; an orientation and orientation of the viewpoint of the observer in the viewpoint orientation and orientation measurement step; and a position of the viewpoint of the observer in the viewpoint position identification step. And a program code for an image generation step of generating an image corresponding to the image, wherein the image is provided to the observer via predetermined display means. Storage medium characterized by Shimesuru. 19. The storage medium according to claim 18, further comprising a program code for an observer position measuring step of measuring the approximate position of the observer. 20. Further, in the viewpoint position specifying step, it is determined whether or not the observer is near a point based on the approximate position of the observer in the observer position measuring step. 20. The storage medium according to claim 19, wherein a timing for starting or ending image presentation to an observer is determined. 21. Further, in the viewpoint position specifying step, information for specifying a position of a point at which the observer stands based on the approximate position of the observer in the observer position measuring step is obtained from the table. 21. The storage medium according to claim 19, wherein: