JP5093667B2 - Navigation system, navigation method, and navigation program - Google Patents

Description

The present invention relates to a navigation system, a navigation method, and a navigation program.

In recent years, various navigation systems that provide useful information when driving a car have been proposed. A general navigation system detects the position and direction of the own vehicle with a GPS receiver or a gyro, and based on the destination or waypoint input from the detected own vehicle position by a remote control, a voice recognition device, etc. A guide route is calculated, and the vehicle position and a map of the surrounding area are displayed on the display, and the map is scrolled to guide the vehicle position to the destination (for example, Patent Documents 1 to 3). See).

JP-A-6-309595 JP 2004-94444 A JP 2004-140811 A

However, in a conventional navigation system, the user can search for a route to a destination desired by the user by setting several points as transit points in advance, but specific road risk information (for example, The road under construction etc.) cannot be presented. Therefore, there is a problem that it is impossible to determine whether or not the vehicle can be easily passed only by the information provided by the navigation system. Some conventional navigation systems, mainly used for driving a car, can present traffic congestion information and accident information on the route in addition to route search, but such systems also present road risk information as described above. I can't do it.

Further, some conventional navigation systems can display an object desired by a user with an image. However, the image presented here is only an image obtained by photographing the object or the like from a certain direction, and is not photographed from the direction desired by the user. For this reason, information that the user really needs cannot be acquired.

An object of the present invention is to provide a navigation system, a navigation method, and a navigation program that can acquire information necessary for a user in order to solve the above-described problems caused by the prior art.

In order to solve the above-described problems and achieve the object, a navigation system according to claim 1 is a navigation system including a navigation device and a server connected via a network, and the navigation device A camera that acquires various information around the user's existing point as an image, a display unit that displays an image, an input unit that inputs various types of information, a position recognition unit that recognizes information about the user's existing location, Direction detection means for detecting a direction in which the camera is facing; an image acquired by the camera; a subject name of an acquired image input from the input means; a user's existing position information recognized by the position recognition means; The sun used in the processing in the server in association with the orientation information of the acquired image detected by the orientation detection means. Characterized in that it comprises an image data generation means for generating Le image data.

The navigation system according to a second aspect of the present invention is the navigation system according to the first aspect, wherein the navigation device always displays the position information recognized by the position recognition unit and the direction information detected by the direction detection unit. It transmits to the said server via, It is characterized by the above-mentioned.

A navigation system according to a third aspect of the invention is the navigation system according to the first or second aspect, wherein the server classifies the sample image data acquired from the navigation device for each subject, and Data classification construction means for constructing supply image data to be supplied to the user, including images taken from a plurality of directions; a database for storing supply image data classified and constructed by the data classification construction means; Data for searching whether or not supply image data matching the destination point information desired to be acquired by the navigation device exists in the database, and extracting the image data from the database when there is a matching supply image data And a search extraction means.

According to a fourth aspect of the present invention, there is provided the navigation system according to the third aspect, wherein the data classification and construction means includes the positional information associated with the image and the position information associated with the image included in the acquired sample image data. It is characterized by classifying each position and orientation with reference to the direction information, analyzing the classified image, and constructing danger information image data that can visually distinguish the danger information of the road included in the image.

According to a fifth aspect of the present invention, in the navigation system according to the third or fourth aspect, the server detects an existing position of the user based on position information and direction information sent from the navigation device. A user position detecting means that searches the database for image data that matches the existing position of the user detected by the user position detecting means. In some cases, the image data is extracted from the database.

A navigation system according to a sixth aspect of the present invention is the navigation system according to any one of the third to fifth aspects, wherein the navigation device acquires the supply image data from the server via the network. Of the images included in the supply image data,
And data processing means for extracting an image that matches the information input from the input means and displaying the image on the display means.

The navigation system according to a seventh aspect of the present invention is the navigation system according to the sixth aspect, wherein the data processing means recognizes the position information recognized by the position recognition means from the acquired supply image information data, and the The display means displays an image associated with position information and azimuth information that match the azimuth information detected by the azimuth detection means.

A navigation system according to an eighth aspect of the present invention is the navigation system according to any one of the third to seventh aspects, wherein the server stores a history of position information and direction information of a user sent from the navigation device. And a user situation estimation means for estimating the user situation, and the estimation result is input to a search and extraction condition of the data search and extraction means.

A navigation system according to a ninth aspect of the present invention is the navigation system according to any one of the third to eighth aspects, wherein the server is sent from the navigation device when the azimuth detecting means is not used. User orientation estimation means for estimating user orientation information based on a history of user position information is provided, and the estimation result is input to a search extraction condition of the data search extraction means.

A navigation system according to a tenth aspect of the present invention is the navigation system according to any one of the third to ninth aspects, wherein the server is based on the position information of the user sent from the navigation device. Recommended spot search extraction means for searching and extracting recommended spots around the existing position from the database, and the search extraction result is input to a search extraction condition of the data search extraction means.

The navigation system according to an eleventh aspect of the present invention is the navigation system according to the tenth aspect, wherein when the azimuth detecting means is not used, the server obtains recommended spot information with azimuth information by the recommended spot search extracting means. It is characterized by searching and extracting.

A navigation method according to a twelfth aspect of the present invention includes a position information acquisition step of acquiring information on a user's existing position, an image acquisition step of acquiring an image, and a subject name setting step of setting a subject name of the acquired image. And an orientation information acquisition step of acquiring orientation information of the acquired image,
The position information acquired in the position information acquisition step, the image acquired in the image acquisition step, and
A sample image data generation step for generating sample image data by associating the subject name set in the subject name setting step with the azimuth information acquired in the azimuth information acquisition step, and generated in the sample image data generation step Categorized sample image data for each subject,
And a supply image data classification and construction step for constructing supply image data to be supplied to a user including images taken from a plurality of directions with respect to one subject.

According to a thirteenth aspect of the present invention, in the navigation method according to the twelfth aspect of the present invention, a destination point information setting step for setting destination point information of image information desired by a user, and the supply image data classification Supply image data search and extraction step for searching and extracting supply image data that matches the destination point information set in the destination point information setting step from among the supply image data classified and constructed in the construction step, and the supply An image selection display step of selecting and displaying an image photographed from a direction desired by the user from the supply image data searched and extracted in the image data search and extraction step.

Further, the navigation method according to the invention of claim 14 includes a position information acquisition step of acquiring information on the user's existing position, an image acquisition step of acquiring an image, and an orientation information acquisition step of acquiring the orientation information of the acquired image. A sample image that generates sample image data by associating the position information acquired in the position information acquisition step, the image acquired in the image acquisition step, and the direction information acquired in the direction information acquisition step A data generation step and an image included in the sample image data generated in the sample image data generation step are classified for each position and direction by referring to the position information associated with the image and the direction information, and the classified image A risk information image data classification construction step for constructing risk information image data that can be visually discriminated from the level of the image included in the image. Characterized in that it.

According to a fifteenth aspect of the present invention, there is provided a navigation method according to the fourteenth aspect of the present invention, further comprising: a user position / orientation information acquisition step of acquiring position information and direction information of the current location of the user; Danger information that retrieves and extracts danger information image data that matches the position information and direction information of the current location of the user acquired in the user position / orientation information acquisition step from the danger information image data classified and constructed in the classification / construction step An image data search and extraction step; and a risk information image display step for displaying the risk information image data searched and extracted in the risk information image data search and extraction step.

According to a sixteenth aspect of the present invention, in the navigation method according to any one of the twelfth to fifteenth aspects, the user position / orientation information acquisition step is continuously performed a plurality of times to obtain user position information. A user position / azimuth history information acquisition step for obtaining a history of the user position / azimuth information, and a user situation estimation step for estimating a user's gaze situation from a history of the user's position information and direction information acquired in the user position / direction history information acquisition step It is characterized by having.

In addition, the navigation method according to the invention of claim 17 is the navigation method according to claim 16, wherein the user situation estimation step further includes two consecutive gazes of the user acquired in the user position / direction history information acquisition step. If the target is the same, the user is determined to be in a situation where he / she is looking at the gaze target, and has a gaze target information providing step of providing information regarding the gaze target to the user.

Further, the navigation method according to the invention of claim 18 is the navigation method according to claim 16, wherein the user's gaze of the user twice acquired in the user position direction history information acquisition step in the user situation estimation step is further provided. If the target is different, wait for the next user ’s gaze input,
If it is the same as the preceding gaze target in the previous two times, the user determines that he / she is confused about what to see between the previous two gaze targets, and relates to the previous two gaze targets. It has a gaze target information providing step of providing information to the user.

Further, the navigation method according to the invention of claim 19 is the navigation method according to claim 16, wherein the user's situation estimation step further includes two continuous gazes of the user acquired in the user position / direction history information acquisition step. If the target is different, wait for the next user ’s gaze input,
If it is the same as the object to be watched later in the previous two times, it is determined that the user is looking at the object to be watched in the latter two times, and the rear of the previous two times. It has the gaze target information provision process which provides the user with the information regarding the gaze target of the direction to a user.

Further, the navigation method according to the invention of claim 20 is the navigation method according to claim 16, wherein the user situation estimation step further includes two continuous gazes of the user acquired in the user position / direction history information acquisition step. If the target is different, wait for the next user ’s gaze input,
If it differs from any of the previous two user's gaze targets, the gaze target information providing step of determining that the user has not determined the gaze target and providing the user with information about the periphery of the user's existing position It is characterized by having.

The navigation method according to the invention of claim 21 is the navigation method according to any one of claims 17 to 19, wherein the information regarding the gaze target provided in the gaze target information providing step further comprises: It is characterized by including a photograph.

The navigation method according to a twenty-second aspect of the present invention is the navigation method according to any one of the seventeenth to nineteenth aspects, wherein the information regarding the gaze target provided in the gaze target information providing step further includes: The name is included.

A navigation method according to a twenty-third aspect of the present invention is the navigation method according to any one of the seventeenth to nineteenth aspects, wherein the information regarding the gaze target provided in the gaze target information providing step further includes: Includes links to detailed descriptions.

The navigation method according to a twenty-fourth aspect of the present invention is the navigation method according to the twentieth aspect, wherein the information related to the periphery of the user's existing position provided in the gaze target information providing step is the periphery of the user's existing position. It is characterized by including the photograph of.

According to a 25th aspect of the present invention, in the navigation method according to the 20th aspect of the present invention, the information related to the periphery of the user's existing position provided in the gaze target information providing step is the periphery of the user's existing position. It is characterized by including the map of.

The navigation method according to the invention of claim 26 is the navigation method according to claim 25, wherein the information about the periphery of the user's existing position provided in the gaze target information providing step is displayed on a map. It includes the gaze information of the user.

Further, in the navigation method according to the invention of claim 27, in the invention of claim 20, information on the periphery of the existing position of the user provided in the gaze target information providing step is:
It includes a link to detailed information around the user's existing location.

A navigation method according to the invention of claim 28 is the navigation method according to any one of claims 12 to 27, wherein the position acquired in the position information acquisition step when the orientation information acquisition step is not passed. It has a user azimuth | direction estimation process which estimates a user's azimuth | direction information based on the history of information.

According to a 29th aspect of the present invention, in the navigation method according to the 28th aspect of the present invention, the user orientation estimating step performs the user position information twice in succession, and based on the change in the position, It is the calculation which estimates the azimuth | direction of.

A navigation method according to a thirtieth aspect of the present invention is the navigation method according to any one of the twelfth to thirty-ninth aspects, based on the position information acquired in the position information acquisition step. A recommended spot search and extraction step of searching and extracting a recommended spot from a database including the supply image data or the danger information image data is provided.

A navigation method according to a thirty-first aspect of the present invention is the navigation method according to any one of the twelfth to thirty-ninth aspects, wherein the navigation method is acquired in the position information acquisition step when the direction information acquisition step is not performed. It has a recommended spot search extraction step of searching and extracting recommended spot information with orientation information around the existing position of the user from the database including the supply image data or the danger information image data based on the position information. To do.

Further, in the navigation method according to the invention of claim 32, in the invention of claim 30 or 31, the information on the recommended spot searched and extracted in the recommended spot search extracting step includes a photograph of the recommended spot. And

Further, in the navigation method according to the invention of claim 33, in the invention of claim 30 or 31, the information on the recommended spot searched and extracted in the recommended spot search extracting step includes a map of recommended spots. And

Further, in the navigation method according to the invention of claim 34, in the invention of claim 30 or 31, the information on the recommended spot searched and extracted in the recommended spot search extracting step includes the name of the recommended spot. And

Further, in the navigation method according to the invention of claim 35, in the invention of claim 30 or 31, the information regarding the recommended spot searched and extracted in the recommended spot search extracting step provides a link to a detailed description of the recommended spot. It is characterized by including.

A navigation program according to a thirty-sixth aspect of the invention causes a computer to execute the navigation method according to any one of the twelfth to thirty-fifth aspects.

According to the navigation system, the navigation method, and the navigation program according to the present invention, the user can obtain image information of a target object from a direction desired by the user, road danger information, a guide for estimating the user situation, and the like. There is an effect that information that is really necessary can be easily provided by an image.

DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a navigation system, a navigation method, and a navigation program according to the present invention will be described in detail with reference to the accompanying drawings.

(Outline of the navigation system)
FIG. 1 is a diagram showing a schematic configuration of a navigation system according to an embodiment of the present invention. The navigation system according to the present embodiment includes a plurality of navigation devices 101.
And the server 102 are connected via the network 100. Navigation device 1
As 01, for example, a mobile phone, a personal digital assistant (PDA), a notebook computer, or the like can be used. It is preferable that a camera capable of photographing the surrounding situation is provided or connected. The server 102 uses a personal computer capable of constructing a database.

The navigation system of the present embodiment is a navigation device 10 possessed by a user.
The image information collected in step 1 is reconstructed so as to match the needs of individual users and provided to each user. In other words, the information provided to each user is not unified information, but is intended to provide more sophisticated information that satisfies each user's request based on information received from each user. It is said.

(Functional configuration of navigation device)
FIG. 2 is a block diagram showing an example of a functional configuration of the navigation device used in the navigation system according to the embodiment of the present invention. The navigation device 101 includes a camera 201, a display unit 202, an input unit 203, a storage unit 204, a position recognition unit 205, an orientation detection unit 206, an image data generation unit 207, a data processing unit 208, Transceiver 2
09.

  The camera 201 acquires various information around the user's existing point as an image.

  The display unit 202 displays an image.

The input unit 203 inputs various types of information (for example, a user ID and password for identifying a user, a subject name of the acquired image, destination point information, and the like).

The storage unit 204 stores an image acquired by the camera 201, various information input from the input unit 203, various data acquired via the network 100, and the like.

The position recognition unit 205 acquires information about the user's existing position. The location information here is GPS
It receives radio waves from a satellite and obtains a geometric position with respect to a GPS satellite, and can be measured anywhere on the earth. As a radio wave, a carrier wave of 1.575.42 MHz, C / A (Co
arse and access) code and navigation messages are used.

The direction detection unit 206 detects a direction in which the camera 201 is facing. Therefore, by acquiring the image information with the camera 201, it is possible to grasp the point where the image is acquired and the azimuth from the point, together with the user's existing position information acquired by the position recognition unit 205.
As the camera 201, for example, in the case of a general type provided by the user such as a mobile phone, the direction detection function can be operated with the acquisition of image information as a trigger. In the case of a camera installed on the road, such as a street camera, a type that can change the orientation of the camera is preferable. When the orientation of the fixed camera is variable, when requesting image information from the server 102, the orientation of the image desired to be acquired can be obtained by pointing the camera 201 in a desired direction while moving the camera 201. Can be set.

The image data generation unit 207 includes the image acquired by the camera 201, the subject name of the acquired image input from the input unit 203, the user's existing position information recognized by the position recognition unit 205, and the acquisition detected by the direction detection unit 206. Sample image data is generated by associating image orientation information and the like. The sample image data generated here is sent to the server 102 via the network 100 and used in processing in the server 102.

The data processing unit 208 acquires supply image data (details will be described later) via the network 100. Then, the image desired by the user among the images included in the acquired supply image data is extracted and displayed on the display unit 202. The data processing unit 208 also detects the position information and orientation detection unit 2 recognized by the position recognition unit 205 from the acquired supply image data.
An image associated with position information and direction information that matches the direction information detected by 06 may be automatically extracted and displayed on the display unit 202.

The transmission / reception unit 209 controls transmission / reception of data performed on the network 100. Information input from the input unit 203 and sample image data generated by the image data generation unit 207 are transmitted to the network 100. Further, the image data for supply desired by the user is received from the network 100.

In the navigation apparatus 101, the position information recognized by the position recognition unit 205 and the direction information detected by the direction detection unit 206 are always transmitted via the network 100 to the server 102.
By transmitting to, the server 102 can grasp the user's existing position.

Further, in this navigation apparatus 101, a voice acquisition unit or the like may be provided to acquire a user's voice or voice around the user as voice information and add this to the image information.

(Functional configuration of server)
FIG. 3 is a block diagram illustrating an example of a functional configuration of a server used in the navigation system according to the embodiment of the present invention. The server 102 includes a database 301, a transmission / reception unit 302, a data classification construction unit 303, a data search / extraction unit 304, a user position detection unit 305, and a route guidance information generation unit 306.

The database 301 stores various information. For example, it stores information about map information and buildings. In addition, data (details will be described later) for storing a user generated by reconstructing various information transmitted from the navigation device 101 (see FIG. 1) of each user is stored. The database 301 may be connected to the server 102 via the network 100.

  The transmission / reception unit 302 controls transmission / reception of data to / from the network 100.

The data classification construction unit 303 classifies and constructs supply image data to be supplied to the user. For example, a plurality of acquired images are classified for each subject, and image data for each subject is constructed. Each image information is provided with position information and direction information that indicate from which direction and where the subject was taken, so by classifying by subject, for example, the same subject can be Images taken from can be used as a set of data. In addition, when generating dangerous point information on the road from the received sample image data, the image included in the sample image data is classified for each position and direction by referring to the position information associated with the image and the direction information. Then, risk information image data is constructed for analyzing the classified images and constructing image data capable of discriminating road risk information included in the images. Each data constructed here is stored in the database 301.

The data search / extraction unit 304 searches the database 301 for data that matches the destination point information desired by the user sent from the navigation apparatus 101. If there is matching data, the data 301 is stored in the database 301. Extract from The data extracted here is transmitted to the navigation device 101 via the network 100 by the transmission / reception unit 302.
Sent to.

The user position detection unit 305 detects the user's existing position based on the position information and the direction information sent from the navigation device 101. The server 102 causes the data search / extraction unit 304 to search the database 301 for data matching the user's existing position detected by the user position detection unit 305. If there is matching data, the data search / extraction is performed. The unit 304 may extract the data from the database 301.

The route guidance information generation unit 306 detects a route to the destination from the destination point information set by the user and the user's existing location information acquired by the transmission / reception unit 302. And the map information of the periphery containing the path | route detected here is acquired from the database 301, and the route guidance information from a user's existing position to the destination is produced | generated. The route guidance information generated here is the transmission / reception unit 302.
Thus, information is sent to the navigation device 101 via the network 100.

(Hardware configuration of navigation device)
Next, the hardware configuration of the navigation device 101 will be described. FIG. 4 is a block diagram showing an example of a hardware configuration of the navigation device used in the navigation system according to the embodiment of the present invention. The navigation device 101 includes a CPU 40.
1, ROM 402, RAM 403, audio I / F (interface) 404, microphone 405, speaker 406, input device 407, and video I / F (interface).
408, display 409, camera 410, and communication I / F (interface) 41
1, a GPS unit 412, and various sensors 413. Each component 4
01 to 413 are connected by a bus 420.

First, the CPU 401 governs overall control of the navigation device 101. ROM402
For example, various programs such as a boot program, a sound generation program, a map information display program, and a communication program are recorded. The CPU 401 executes the respective programs, thereby realizing the functions of the image data generation unit 207 and the data processing unit 208 shown in FIG.

The voice generation program generates tone and voice information corresponding to the voice pattern. For example, it outputs to audio | voice I / F404 via CPU401.

Further, the map information display program determines the display format of the map information (acquired from the server 102) to be displayed on the display 409 by the video I / F 408, and displays the map information on the display 409 according to the determined display format.

The RAM 403 is used as a work area for the CPU 401, for example. The RAM 403 and the ROM 402 described above realize the functions of the storage unit 204 shown in FIG.

The audio I / F 404 includes an audio input microphone 405 and an audio output speaker 4.
06 is connected. The sound received by the microphone 405 is A / D converted in the sound I / F 404. From the speaker 406, sound based on the sound signal from the sound I / F 404 is output. The voice input from the microphone 405 can be recorded as voice data, for example.

The input device 407 may be a keyboard having a plurality of keys for inputting characters, numerical values, various instructions, a touch panel, and the like, and implements the function of the input unit 203 illustrated in FIG.

The video I / F 408 is connected to the display 409 and the camera 410. The display 409 realizes the function of the display unit 202 shown in FIG.
The function of the camera 201 shown in FIG. Specifically, the video I / F 408 includes, for example, a graphic controller that controls the entire display 409, a buffer memory such as a VRAM (Video RAM) that temporarily records image information that can be displayed immediately,
A control IC that controls display of the display 409 based on image data output from the graphic controller is included.

The display 409 displays icons, cursors, menus, windows, or various data such as characters and images. As this display 409, for example, T
An FT liquid crystal display or the like can be employed.

In addition, the communication I / F 411 is connected to a network via wireless and functions as an interface with the CPU 401. The communication I / F 411 is the transmission / reception unit 209 shown in FIG.
Realize the function.

In addition, the GPS unit 412 receives received waves from GPS satellites and various sensors 413 described later.
Is used to calculate position information indicating the current position of the navigation device 101. The position information indicating the current position is information specifying one point on map information such as latitude / longitude and altitude, for example. The GPS unit 412 realizes the function of the position recognition unit 205 shown in FIG.

The various sensors 413 are a vehicle speed sensor, an acceleration sensor, an angular velocity sensor, an azimuth sensor, and the like, and output values thereof are used for calculation of position information by the GPS unit 412 and measurement of changes in speed and azimuth. The various sensors 413 realize the function of the orientation detection unit 206 shown in FIG.

(Hardware configuration of the server)
Next, the hardware configuration of the server 102 will be described. FIG. 5 is a block diagram showing an example of a hardware configuration of a server used in the navigation system according to the embodiment of the present invention. The server 102 includes a CPU 501, ROM 502, RAM 503, magnetic disk drive 504, magnetic disk 505, optical disk drive 506, optical disk 507, audio I / F (interface) 508, microphone 509, and speaker 510. An input device 511, a video I / F (interface) 512, a display 513, and a communication I / F (interface) 514. Note that the components 501 to 514 are connected by a bus 520, respectively.

First, the CPU 501 governs overall control of the server 102. The ROM 502 records various programs such as a boot program, a route search program, a voice generation program, a map information display program, a communication program, a database creation program, and a data analysis program. In particular, the function of the data classification construction unit 303 shown in FIG. 3 can be realized by the CPU 501 executing the database creation program. Further, the CPU 501 executes the data analysis program, thereby realizing the function of the data search / extraction unit 304 shown in FIG. Also, the function of the user position detection unit 305 shown in FIG. 3 can be realized by the CPU 501 executing the boot program.

The route search program searches for an optimum route from the departure point to the destination using map information recorded on the optical disk 507 described later. The guidance route searched by executing this route search program is distributed to the user's navigation device 101 via the network. When the CPU 501 executes this route search program,
The function of the route guidance information generation unit 306 shown in FIG. 4 can be realized.

Further, the sound generation program generates tone and sound information corresponding to the sound pattern and outputs the sound and sound information to the sound I / F 508 via the CPU 501, for example.

The RAM 503 is used as a work area for the CPU 501, for example. The magnetic disk drive 504 controls reading / writing of data with respect to the magnetic disk 505 according to the control of the CPU 501. The magnetic disk 505 records data written under the control of the magnetic disk drive 504.

The optical disk drive 506 controls the reading / writing of the data with respect to the optical disk 507 according to control of CPU501. The optical disc 507 is the optical disc drive 50.
6 is a detachable recording medium from which data is read out from the optical disc 507 in accordance with control 6. As the optical disc 507, a writable recording medium can be used. In addition to the optical disk 507, an MO, a memory card, or the like can be used as a removable recording medium.

As an example of information recorded on the magnetic disk 505 and the optical disk 507, there is data classified and constructed for supply to the user. Thus, the database 301 shown in FIG. 3 is configured.

Other examples of information recorded on the magnetic disk 505 and the optical disk 507 include map information used for route search and route guidance. The map information includes background data representing features (features) such as buildings, rivers, and the ground surface, and road shape data representing the shape of the road, and is delivered to the navigation device 101 of each user. , Display 409
Rendered in two or three dimensions.

The road shape data further includes traffic condition data. Examples of traffic condition data include:
For each node, whether there are traffic lights or pedestrian crossings, highway entrances / junctions, length (distance) for each link, road width, direction of travel, road type (highway, toll road, general road, etc.) Information is included.

Although the map information is recorded on the magnetic disk 505, the optical disk 507, etc. here, the present invention is not limited to this. For example, the map information may be acquired via a network through the communication I / F 514. The map information acquired in this way is stored in the RAM 503, for example.

The voice I / F 508 includes a microphone 509 for voice input and a speaker 5 for voice output.
10 is connected. The sound received by the microphone 509 is A / D converted in the sound I / F 508. From the speaker 510, sound based on the sound signal from the sound I / F 508 is output. The sound input from the microphone 509 can be recorded on the magnetic disk 505 or the optical disk 507 as sound data, for example.

Examples of the input device 511 include a remote controller having a plurality of keys for inputting characters, numerical values, various instructions, a keyboard, a mouse, a touch panel, and the like.

The video I / F 512 is connected to the display 513. This video I / F512
Specifically, for example, a graphic controller that controls the entire display 513, a buffer memory such as a VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and an image output from the graphic controller A control IC that controls display of the display 513 based on the data is used.

The display 513 displays icons, cursors, menus, windows, or various data such as characters and images. As this display 513, for example, C
RT, TFT liquid crystal display, plasma display, etc. can be employed.

In addition, the communication I / F 514 is connected to a network via wireless and functions as an interface with the CPU 501. The communication I / F 514 implements the function of the transmission / reception unit 302 shown in FIG.

(Navigation system processing)
Next, processing of the navigation system according to the embodiment of the present invention will be described.
Hereinafter, a process for obtaining an image of a target object and a process for obtaining road danger information will be described.

(Process when obtaining image information of the object)
First, a process for obtaining an object image by the navigation system according to the embodiment of the present invention will be described. Hereinafter, a processing procedure for collecting an image of an object to be provided to the user and a processing procedure for the user to receive an image of the object will be described.

First, a processing procedure for collecting an image of an object to be provided to the user will be described. FIG.
It is a flowchart which shows the process sequence of the image collection of the target object provided to the user in the navigation system concerning embodiment of this invention.

In the flowchart of FIG. 6, first, position information is acquired (step S601). Specifically, the position recognition unit 205 of the navigation device 101 acquires information on the user's existing position.

Next, an image is acquired (step S602). Specifically, the navigation device 101
The camera 201 included in the camera acquires an image.

Next, the subject name of the acquired image is set (step S603). For example, here, the subject name (title) of the image acquired in step S601 is input from the input unit 203 of the navigation device 101.

Next, the orientation information of the image is acquired (step S604). Here, the direction detection unit 206 of the navigation device 101 detects the direction of the camera 201. That is, step S6
By acquiring an image with the camera 201 in 02, it is possible to acquire image orientation information.

Next, sample image data is generated (step S605). Here, step S6
Sample image data to be processed by the server 102 is generated by associating the image, the subject name of the image, the position information of the image, and the azimuth information acquired by the processing from 01 to step S604.

Sample image data is transmitted (step S606). Here, step S605 is performed.
The sample image data generated in (1) is transmitted from the navigation device 101 to the network 100.

The server receives sample image data (step S607). Here, the server 10
2 receives the sample image data from the navigation apparatus 101 via the network 100.

The image data for supply to be supplied to the user is classified and constructed (step S608). This process is executed by the data classification construction unit 303 of the server 102. For example, a plurality of acquired images are classified for each subject, and image data for each subject is constructed. Each image is given position and orientation information that indicates where the subject was taken from which direction, so by classifying by subject, for example, the same subject can be taken from multiple directions The obtained image can be used as a set of data.

The classified image data for supply is stored (step S609). Here, the supply image data classified and constructed in step S608 is stored in the database 301.

Through the above-described steps, the collection of the target image data to be supplied to the user is completed. Since the image data obtained here is collected with the cooperation of the user who uses the navigation system, it is possible to collect image data that more meets the needs of the user.

Next, a processing procedure for the user to receive the target image will be described. FIG. 7 is a flowchart showing a processing procedure for a user to receive an object image in the navigation system according to the embodiment of the present invention.

In the flowchart of FIG. 7, first, destination point information is set (step S701).
. Here, the destination point information (position, direction, subject name, etc.) of the image that the user wants to acquire is input from the input unit 203 of the navigation device 101.

The destination point information is transmitted (step S702). Here, the navigation apparatus 101 transmits the destination point information set in step S701 to the network 100.

The supply image data that matches the destination point information is retrieved and extracted (step S703). Here, the data search / extraction unit 304 of the server 102 searches whether or not the supply image data that matches the transmitted destination point information (position, orientation, subject name, etc.) exists in the database 301, and matches. If there is supply image data to be extracted, the data is extracted from the database 301.

The distribution of the supply image data is received (step S704). Here, step S703 is performed.
The user's navigation device 101 receives the supply image data extracted in step S1. The data received here includes a plurality of images (for example, images obtained by photographing one subject from a plurality of directions) that match the destination point information (position, direction, subject name, etc.).

An image is selected and displayed (step S705). The supply image data acquired in step S704 includes images obtained by photographing one subject from a plurality of directions. there,
The user operates the input unit 203 of the navigation device 101 to select an image taken from a desired direction, so that the data processing unit 208 displays the selected image.
02 is displayed. In addition, since the image data for supply includes an image obtained by photographing one subject from a plurality of directions, the user did not want it at first, but later wanted an image from a different direction. In this case, it is only necessary to execute the process of step S705 without executing the process from step S701 again.

In step S705, the position and orientation of the user can be detected by the operations of the position recognition unit 205 and the orientation detection unit 206 in the navigation device 101.
The data processing unit 208 may extract an image that matches the position and orientation detected from the image included in the acquired supply image data, and display the image on the display unit 202.

By going through the steps as described above, the user can acquire an image of the object photographed from a desired direction.

(Process for obtaining road hazard information)
Next, processing when road danger information is obtained by the navigation system according to the embodiment of the present invention will be described. Hereinafter, a processing procedure for performing road risk information provided to the user and a processing procedure for the user to receive road risk information will be described.
As a method of presenting road danger information, a photograph of a construction site or an obstacle, a figure indicating danger, or the like is displayed, and the position is shown as a rough place. Even if you do not know the detailed location, information about the presence or absence of danger is useful and can also be a measure of road congestion.

First, a processing procedure for collecting road danger information provided to the user will be described.
FIG. 8 is a flowchart showing a processing procedure for collecting road risk information provided to the user in the navigation system according to the embodiment of the present invention, and FIG. 9 is a navigation system according to the embodiment of the present invention. It is a flowchart which shows the process sequence for the user in to receive provision of the danger information of a road.

In the flowchart of FIG. 8, first, position information is acquired (step S801). Specifically, the position recognition unit 205 of the navigation device 101 acquires information on the user's existing position.

Next, an image is acquired (step S802). Specifically, the navigation device 101
The camera 201 included in the camera acquires an image.

Next, the orientation information of the image is acquired (step S803). Here, the direction detection unit 206 of the navigation device 101 detects the direction of the camera 201. That is, step S8
By acquiring an image with the camera 201 in 02, the orientation information of the image can be acquired.

Next, sample image data is generated (step S804). Here, step S8
Sample image data is generated by integrating the image, the position information of the image information, and the orientation information acquired by the processing of 01 to step S803. This sample image data is used for processing of the server 102.

The sample image data is transmitted (step S805). Here, step S804 is performed.
The sample image data generated in (1) is transmitted from the navigation device 101 to the network 100.

The server receives sample image data (step S806). Here, the server 10
2 receives the sample image data from the navigation apparatus 101 via the network 100.

The image data for supply to be supplied to the user is classified and constructed (step S807). This process is executed by the data classification construction unit 303 of the server 102. The image included in the acquired sample image data is classified for each position and direction by referring to the position information and the direction information added to the image, the classified image is analyzed, and road risk information included in the image is analyzed. Build risk information image data that can be identified.

The classified image data for supply is stored (step S808). Here, the supply image data classified and constructed in step S807 is stored in the database 301.

Through the above steps, collection of road danger information provided to the user is completed. The image data obtained here is collected with the cooperation of each user who uses the navigation system, and can be collected as much as the danger information of the area frequently used by the user. Therefore, it is possible to collect danger information that better meets the needs of the user.

In addition, although the example which collects an image with the portable navigation apparatus 101 was shown here, you may collect an image with a street camera, for example. However, in this case, it is necessary that the street camera has a function capable of acquiring the position information and the orientation information of the image to be taken.

Next, a processing procedure for the user to receive provision of road danger information will be described. FIG.
These are the flowcharts which show the process sequence for the user in the navigation system concerning embodiment of this invention to receive provision of road danger information.

In the flowchart of FIG. 9, first, position information and direction information of the current location of the user are acquired (step S1001). Here, the position information and the direction information of the user are acquired by the operations of the position recognition unit 205 and the direction detection unit 206 in the navigation device 101.

Next, the location information and direction information of the current location of the user are transmitted (step S1002).
. Here, the navigation apparatus 101 transmits the position information and direction information of the current location of the user acquired in step S1001 to the network 100.

The risk information image data that matches the position information and direction information of the current location of the user is retrieved and extracted (step S1003). Here, the user position detection unit 305 of the server 102 detects the user's existing position based on the position information and the direction information sent from the navigation device 101. Then, the data search / extraction unit 304 is searched for whether or not the risk information image data matching the user's existing position and orientation detected by the user position detection unit 305 exists in the database 301, and there is matching risk information image data. Data retrieval and extraction unit 30
4, the data is extracted from the database 301.

The distribution of the danger information image data is received (step S1004). Here, step S1
The danger information image data extracted in 003 is received by the user's navigation device 101.

A danger information image is displayed (step S1005). Since the danger information image data acquired in step S1004 is danger information image data in which the danger information in the position and direction in which the user currently exists can be visually discriminated, the data processing unit 208 displays this on the display unit 202. The user can acquire road danger information by visually grasping the situation such as construction.

Through the above-described steps, the user can acquire danger information image data from which danger information in the existing position and orientation can be easily determined, and can perform efficient and safe passage.

Further, in the navigation system according to the embodiment of the present invention, the route guidance function that the general navigation system has is provided in the server 102, so that the same route guidance information as the general navigation system is acquired. You can also

(Process when estimating the user situation)
Next, a description will be given of processing in the case where the navigation system according to the embodiment of the present invention estimates a user's situation and intention using a plurality of line-of-sight histories and provides appropriate information accordingly.

FIG. 11 is four schematic diagrams showing changes in the user's gaze target, and FIG. 12 is an explanatory diagram showing patterns for estimating the user's situation from the change in the gaze target.
The line-of-sight information (P1, P2, P3) indicating which position the user is facing in which direction is continuously acquired within a short time, and the change pattern of the gaze target (A, B, C) is obtained from the history. (I,
(B), (c), (d) can be obtained, and the current situation of the user's interest or the like can be estimated.

In the pattern (a), the gaze target is the same building (A) twice in succession, so it can be estimated that the user's interest is in the building (A).
If the gaze target is not the same twice, the next gaze target is taken into account.
That is, when the third gaze target returns to the first gaze target as in the pattern (b), it can be estimated that the user's interest is lost between the buildings (A) and (B). Also, the pattern (
If the third gaze target is the same as the second gaze target as in (c), it can be estimated that the user's interest is in the building (B) as in the pattern (A). Also, as in pattern (d), 3
If the first gaze target is different from the first and second gaze targets, it can be estimated that the user's interest is not fixed.

Using this estimation result, in the case of pattern (A), information on the building (A) is provided to the user, and in the case of pattern (B), information on the building (A) (B) is provided to the user. In the case of the pattern (c), information on the building (B) is provided to the user. In the case of the pattern (d), information on the surroundings of the user's existing position such as the buildings (A), (B), and (C). Is provided to the user.

FIG. 13 is a main part flowchart showing a processing procedure for estimating a user situation and providing appropriate information in the navigation system according to the embodiment of the present invention.
First, user position information is acquired (step S1301). Specifically, the position recognition unit 205 of the navigation device 101 acquires information on the user's existing position.

Subsequently, direction information is acquired (step S1302). Here, the direction detection unit 206 of the navigation device 101 detects the direction of the camera 201.
In other words, by acquiring image information with a general-purpose camera 201 provided by the user, the user's existing position information acquired by the position recognition unit 205 and the orientation from the point where the image is acquired are grasped. can do.

The obtained position / orientation information data is transmitted to the server 102 via the network 100 (step 1303). Here, it may be transmitted as sample image data as in the above-described embodiment, or only data of position and orientation may be used. Moreover, it is preferable to transmit the position / orientation information data sequentially and continuously.

The server 102 receives the position / orientation information data transmitted from the navigation device 101 (step S1304).

Then, the user's gaze state is estimated from the history of position and orientation information received from the navigation device 101. That is, the user's gaze target for two consecutive times is compared (step S1305).
If they are the same (A, A), the user judges that the user is looking at the gaze target (A) (pattern (A)) and provides the user with information about the gaze target (A) (Step S1306).

If the user's gaze target for two consecutive times is different (A, B), it waits for the next user's gaze target input to be compared (step S1307), which is the earlier gaze target of the previous two times ( A)
(A, B, A), it is determined that the user is wondering what to look at between the gaze targets (A) and (B) (pattern (b)), and the plurality of Gaze target (A) (B)
The information regarding is provided to the user (step S1308).

Also, the user's gaze target for two consecutive times is different (A, B), and comparison is made after waiting for the next user's gaze target input (step S1307). (
If it is the same as (B) (A, B, B), the user judges that it is the situation where he / she is looking at the target (B) in the latter two times (Pattern (C)), Information on the later gaze target (B) of the previous two times is provided to the user (step S1309).

Further, the user's gaze target for two consecutive times is different (A, B), and comparison is made after waiting for the next user's gaze target input (step S1307), which is the previous two user's gaze target (A).
If it is different from any of (B) (A, B, C), it is determined that the user has not determined a gaze target (pattern (d)), and those gaze targets (A) (B) (C) For example, information about the periphery of the user's existing position is provided to the user (step S1310).

FIG. 14 is an explanatory view exemplifying a state in which information regarding the gaze target (A) is provided to the user in the case of the patterns (A) and (C).
On the screen of a mobile phone or the like as the navigation device 101, the name of the building as the gaze target (A), the description (D1), the photograph (D2), and the link (D3) to the detailed description are displayed.

By displaying the photograph (D2), the user can compare with the scenery in front of the eyes, and the sense of security for navigation can be obtained. Further, if the photograph (D2) and the actual gaze target (A) are different, it contributes to correction of the search.

Further, the user can obtain detailed information regarding the gaze target (A) by proceeding to the link (D3) to the detailed description. Such detailed information includes, for example, information such as the name of a company that has a company building, a contact information of the company, a link to HP, and the like if the object to be watched (A) is a building. Furthermore, if the gaze target (A) is limited to a specific level of the building, the operator can also be limited, which is useful for navigation as route guidance.

FIG. 15 is an explanatory diagram exemplifying a state in which information regarding the gaze target (A) (B) is provided to the user in the case of the pattern (b).
On the screen of the mobile phone or the like as the navigation device 101, the names of two buildings as the gaze target (A) (B), the description (D1), the photograph (D2), and the link (D3) to the detailed description are displayed. Is done.

FIG. 16 is an explanatory view exemplifying a state in which information relating to the periphery of the user's existing position such as the gaze target (A), (B), or (C) is provided to the user in the case of the pattern (d).
On the screen of the mobile phone or the like as the navigation device 101, the map (D4) and the names, descriptions (D1), photographs (D2), and detailed descriptions of the three buildings as the gaze target (A) and (B) (
A link (D3) to D5) is displayed.

In the illustrated example, the user's line-of-sight information (P), the line-of-sight information (Q) of other users, and the recommended spot (D6) are also displayed. Store information, directions, and the like of the recommended spot (D6) may be indicated.
As the user's line-of-sight information (P), the latest data in time is used, and as the line-of-sight information (Q) of other users, the data of one user who is closest in time or the average number of users indicated May be correct data. The recommended spot (D6) includes popular shops and scenic spots.

(Process when estimating direction information from position information)
Next, a description will be given of processing in the case of estimating user orientation information using a history of position information by the navigation system according to the embodiment of the present invention.

FIG. 17 is an explanatory diagram showing a state in which user orientation information is estimated from a history of position information.
The user's location information (R1) (R2) is acquired twice in a short time using GPS or the like,
The direction of the vector having the first position (R1) as a fulcrum and the latter position (R2) as an end point is estimated as the user's direction.
The acquisition of the user's position information is not limited to two times, and may be performed appropriately, for example, by averaging the directions of vectors obtained from the number of times.

According to this, even when an electronic compass or the like cannot be used or is not provided depending on environmental conditions, or when a failure occurs, photo mapping and guidance based on the user's position and line-of-sight direction can be performed.

(Processing when direction information cannot be obtained)
Next, navigation processing when direction information cannot be obtained by the navigation system according to the embodiment of the present invention will be described.

FIG. 18 is an explanatory diagram illustrating a navigation screen that can be used even when direction information cannot be obtained.
Depending on the form of service to the user, it may not be necessary to know the direction information of the user when providing information. For example, a recommended spot around the user's existing position is guided.

In the illustrated example, a recommended photographing spot (D6) is presented as a recommended spot. The map (D4) shows the user's existing location (R) obtained from GPS and the like, and recommended shooting spots (D6) in the vicinity, and a detailed description of the recommended shooting spot (D6) is shown in the margin. A link (D7) and a link (D7) to a condition input menu for searching for other recommended shooting spots (D6) are shown.
The recommended shooting spot (D6) shows not only the position but also the recommended shooting direction,
Therefore, a link to the photograph taken may be attached. According to this, the user can easily know where and what kind of sight can be seen, and can find a recommended shooting spot (D6) efficiently in a large place such as a park, It is also useful for route guidance.

The selection criteria for the recommended shooting spot (D6) include, for example, the newness of the shooting date, the shooting of many people, the season such as summer fountains and autumn leaves, weather, time zone, Various conditions can be used, such as being able to follow only the promenade from the user's existing location and not having much difference in elevation.

In the example of FIG. 19, the recommended shooting spots (D6) are not displayed individually but collectively displayed (D8). A link to a detailed map that presents the recommended shooting spots (D6) individually may be attached to the collective display spot (D8).

FIG. 20 is an explanatory diagram of an example of displaying a photograph (D2) taken at the recommended shooting spot (D6) in a blog style.
In the illustrated example, a photograph (D2) taken at a plurality of recommended shooting spots (D6) is displayed together with its title (D9), description (D1), and a link (D3) to detailed explanation. At the end of the link (D3) to the detailed description, in addition to the enlarged photo (D2), a link (D10) to the detailed description of the shooting information such as direction and photographer name, and a map (D4) indicating the shooting position are displayed. Is done. A route guide from the user's existing location to the shooting position may be added to the map (D4).

As described above, according to the present invention, it is possible to provide information required by each user such as image information of a target object from a direction desired by the user and road danger information as an image.
In addition, navigation that organically links the relationship between the database storing photographs, the electronic map, and the user's existing location can be obtained.

The navigation method described in this embodiment (FIGS. 6 and 7, FIG. 8 and FIG. 1).
The processing shown in FIG. 0) can be realized by executing a prepared program on a computer such as a personal computer or a workstation.
This program is hard disk, flexible disk, CD-ROM, MO, DV
The program is recorded on a computer-readable recording medium such as D, and is executed by being read from the recording medium by the computer. The program may be a transmission medium that can be distributed via a network such as the Internet.

As described above, the present invention is useful for a navigation system, and in particular, can provide information that meets the needs of individual users.

It is a figure which shows schematic structure of the navigation system concerning embodiment of this invention. It is a block diagram which shows an example of a functional structure of the navigation apparatus used for the navigation system concerning embodiment of this invention. It is a block diagram which shows an example of the functional structure of the server used for the navigation system concerning embodiment of this invention. It is a block diagram which shows an example of the hardware constitutions of the navigation apparatus used for the navigation system concerning embodiment of this invention. It is a block diagram which shows an example of the hardware constitutions of the server used for the navigation system concerning embodiment of this invention. It is a flowchart which shows the process sequence of the image collection of the target object provided to the user in the navigation system concerning embodiment of this invention. It is a flowchart which shows the process sequence for the user in the navigation system concerning embodiment of this invention to receive provision of the image of a target object. It is a flowchart which shows the process sequence for performing the dangerous point information collection of the road provided to the user in the navigation system concerning embodiment of this invention. It is a flowchart which shows the process sequence for the user in the navigation system concerning embodiment of this invention to receive provision of road danger information. It is four schematic diagrams which show the change of the user's gaze object concerning embodiment of this invention. It is explanatory drawing which shows the pattern which estimates a user's condition from the change of the gaze object concerning embodiment of this invention. It is a flowchart of the principal part which shows the process sequence for estimating the user condition in the navigation system concerning embodiment of this invention, and providing suitable information. It is explanatory drawing which illustrates the aspect which provides the user regarding the gaze object (A) in the case of the pattern (I) and (C) concerning embodiment of this invention. It is explanatory drawing which illustrates the aspect which provides the user regarding the gaze object (A) (B) in the case of the pattern (b) concerning embodiment of this invention. It is explanatory drawing which illustrates the aspect which provides the user with the information regarding the periphery of a user's existing position, such as gaze object (A) (B) (C) in the case of the pattern (d) concerning embodiment of this invention. It is explanatory drawing which shows the aspect which estimates a user's azimuth | direction information from the log | history of the positional information concerning embodiment of this invention. It is explanatory drawing which illustrates the navigation screen which can be utilized even when the azimuth | direction information concerning embodiment of this invention is not obtained. It is explanatory drawing which shows another Example of the navigation screen which can be utilized even when the azimuth | direction information concerning embodiment of this invention is not obtained. It is explanatory drawing of the example which displays the photograph image | photographed at the recommended photography spot concerning embodiment of this invention like a blog.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Network 101 Navigation apparatus 102 Server 201 Camera 202 Display part 203 Input part 204 Storage part 205 Position recognition part 206 Direction detection part 207 Image data generation part 208 Data processing part 209,302 Transmission / reception part 301 Database 303 Data classification construction part 304 Data search Extraction unit 305 User position detection unit 306 Route guidance information generation unit

Claims (17)

A navigation system including a navigation device and a server connected via a network,
The navigation device
A camera that acquires various information around the user's existing location as an image,
Display means for displaying an image;
Input means for inputting various information;
Position recognition means for recognizing information of the user's existing position;
Orientation detection means for detecting the direction in which the camera is facing;
The image acquired by the camera, the subject name of the acquired image input from the input unit, the user's existing position information recognized by the position recognition unit, and the direction information of the acquired image detected by the direction detection unit are associated with each other. Image data generating means for generating sample image data used in the processing in the server;
Transmission means for constantly transmitting the position information recognized by the position recognition means and the direction information detected by the direction detection means to the server via the network;
The server
Data classification construction means for classifying sample image data acquired from the navigation device for each subject and constructing supply image data to be supplied to a user including images taken from a plurality of directions with respect to one subject. When,
A database for storing supply image data classified and constructed by the data classification construction means;
Data for searching whether or not supply image data matching the destination point information desired to be acquired by the navigation device exists in the database, and extracting the image data from the database when there is a matching supply image data A search extraction means ,
The data classification construction means classifies the image included in the acquired sample image data for each position and orientation with reference to the position information associated with the image and the orientation information, and analyzes the classified image. A navigation system characterized by constructing image data capable of discriminating road danger information included in the image . The server
User position detection means for detecting the user's existing position based on the position information and direction information sent from the navigation device,
The data search and extraction means searches whether or not there is image data that matches the existing position of the user detected by the user position detection means in the database, and if there is matching image data, the image data is Characterized by extracting from the database
The navigation system according to claim 1 . The navigation device
The supply image data is acquired from the server via the network, and an image that matches information input from the input unit is extracted from the images included in the supply image data and displayed on the display unit Data processing means,
The navigation system according to claim 1, further comprising: The data processing means is an image in which position information and direction information matching the position information recognized by the position recognition means and the direction information detected by the direction detection means are associated from the acquired supply image information data. Is displayed on the display means.
The navigation system according to claim 3 . The server
Based on the user position information and the direction information history sent from the navigation device, the user situation estimation means for estimating the user situation,
The estimation result is input to a search extraction condition of the data search extraction means.
The navigation system according to any one of claims 1 to 4 . When not using the direction detection means,
The server
Based on a history of user location information sent from the navigation device, comprising user orientation estimation means for estimating user orientation information,
The estimation result is input to a search extraction condition of the data search extraction means.
The navigation system according to any one of claims 1 to 5 . The server
Based on the user's position information sent from the navigation device, a recommended spot search extracting means for searching and extracting recommended spots around the user's existing position from the database,
The search extraction result is input to a search extraction condition of the data search extraction means.
The navigation system according to any one of claims 1 to 6 . When the orientation detection means is not used,
The server
The recommended spot search extracting means searches and extracts recommended spot information with direction information.
The navigation system according to claim 7 . A location information acquisition step for acquiring information of the user's existing location;
An image acquisition process for acquiring images;
An orientation information acquisition step of acquiring orientation information of the acquired image;
Sample image data generation for generating sample image data by associating the position information acquired in the position information acquisition step, the image acquired in the image acquisition step, and the direction information acquired in the direction information acquisition step Process,
The image included in the sample image data generated in the sample image data generation step is classified for each position and direction with reference to the position information associated with the image and the direction information, and the classified image is analyzed and the image is analyzed. A risk information image data classification construction process for constructing image data capable of discriminating road risk information included in the road,
A user position and direction information acquisition step of acquiring position information and direction information of the current location of the user;
Among the danger information image data classified and constructed in the danger information image data classification construction process, risk information image data that matches the position information and orientation information of the current location of the user acquired in the user position and orientation information acquisition process is obtained. Danger information image data search extraction process to search and extract,
A risk information image display step for displaying the risk information image data searched and extracted in the risk information image data search and extraction step;
A navigation method characterized by comprising: The user position and orientation information acquisition step is continuously performed a plurality of times, and the user position and orientation history information acquisition step for obtaining a history of the user's position information and orientation information; and
A user situation estimation step of estimating a user's gaze situation from a history of the user position information and orientation information acquired in the user position orientation history information acquisition step;
The navigation method according to claim 9 , further comprising: In the user situation estimation step,
If the user's gaze target for two consecutive times acquired in the user position / azimuth history information acquisition step is the same, it is determined that the user is viewing the gaze target,
The navigation method according to claim 10 , further comprising a gaze target information providing step of providing information regarding the gaze target to the user. The navigation method according to claim 11 , wherein the information regarding the gaze target provided in the gaze target information providing step includes a photograph of the gaze target. When not going through the direction information acquisition step,
The navigation method according to any one of claims 9 to 12 , further comprising: a user orientation estimation step of estimating user orientation information based on a history of location information acquired in the location information acquisition step. The navigation method according to claim 13 , wherein the user orientation estimation step is an operation of continuously performing user position information twice and estimating a user orientation based on a change in the location. Based on the position information acquired in the position information acquisition step, a recommended spot search extraction step of searching and extracting recommended spots around the user's existing position from the database including the supply image data or the danger information image data The navigation method according to any one of claims 9 to 14 , wherein: The navigation method according to claim 15 , wherein the information related to the recommended spot searched and extracted in the recommended spot search and extraction step includes a photograph of the recommended spot. A navigation program causing a computer to execute the navigation method according to any one of claims 9 to 16 .

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