WO2008044309A1 - Navigation system, mobile terminal device, and route guiding method - Google Patents
Navigation system, mobile terminal device, and route guiding method Download PDFInfo
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- WO2008044309A1 WO2008044309A1 PCT/JP2006/320461 JP2006320461W WO2008044309A1 WO 2008044309 A1 WO2008044309 A1 WO 2008044309A1 JP 2006320461 W JP2006320461 W JP 2006320461W WO 2008044309 A1 WO2008044309 A1 WO 2008044309A1
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- Prior art keywords
- image
- route
- imaging
- guide
- display
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/36—Input/output arrangements for on-board computers
- G01C21/3626—Details of the output of route guidance instructions
- G01C21/3647—Guidance involving output of stored or live camera images or video streams
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/36—Input/output arrangements for on-board computers
- G01C21/3626—Details of the output of route guidance instructions
- G01C21/3632—Guidance using simplified or iconic instructions, e.g. using arrows
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
- G01S19/50—Determining position whereby the position solution is constrained to lie upon a particular curve or surface, e.g. for locomotives on railway tracks
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/005—Traffic control systems for road vehicles including pedestrian guidance indicator
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0968—Systems involving transmission of navigation instructions to the vehicle
- G08G1/0969—Systems involving transmission of navigation instructions to the vehicle having a display in the form of a map
Definitions
- Navigation system Portable terminal device, and route guidance method
- the present invention relates to a communication-type pedestrian navigation system that searches for a guidance route from a departure point to a destination and guides the guidance route using image information displayed on a display means. Yes, especially when the surrounding landscape at an intersection is imaged and displayed as a peripheral image on the display means, and when displaying the route guidance image on the displayed peripheral image, the route image cannot be displayed on the peripheral image.
- the present invention relates to a pedestrian navigation system that guides an imaging direction in which an image can be displayed.
- the above car navigation system uses GPS (Global Positioning System) and receives GPS signals transmitted from multiple GPS satellites orbiting the earth with a GPS antenna. The position is identified by analyzing the satellite position and clock information included in the GPS signal. At least four GPS satellites are required. The single positioning accuracy of GPS is improved to 5 m or less by adopting DGPS (Differential GPS), which is generally over 10 m. In particular, it is currently only installed on some mobile phones !, NA !, GPS receivers are now installed on all models of mobile phones called third generation! / ⁇ The
- a route searching device and a route searching method used in a general navigation device and a communication navigation system are disclosed in, for example, the following Patent Document 1 (Japanese Patent Laid-Open No. 2001-165681).
- this navigation system information on the departure and destination points is sent from the portable navigation terminal to the information distribution server, and the information distribution server searches the route network and traffic network data for the route that matches the search conditions and guides it. It is configured.
- Search conditions include transportation from the departure point to the destination, such as walking, automobiles, combined use of railways and walking, and route search is performed using this as one of the search conditions.
- the information distribution server uses the road (route) of the map data as the node and the position of the inflection point as the node, the route connecting each node as the link, and the cost information (distance and required time) of all the links. As a database. Then, the information distribution server refers to the database to sequentially search for a link from the departure node to the destination node, and traces the node and link with the smallest cost information of the link as a guide route. Can guide the shortest route to the mobile navigation terminal. As such a route search method, a method called label determination method or Dijkstra method is used. Patent Document 1 also discloses a route search method using the Dijkstra method.
- map information and guide route information displayed by a terminal device are downloaded by a server device such as a route search server connected via a network.
- the terminal device that has received the distribution of the map information and the guidance route from the information distribution server such as the route search server has a display means such as a liquid crystal display device, and displays the map and the guidance route on the display means and also the pedestrian and the car. Displays the current position (current position of the terminal device) on the guidance route and guides pedestrians and cars to the destination To do.
- the map displayed on the display means is a plan view, that is, a force for displaying a two-dimensional figure, a plane bird's-eye view with a sense of perspective on the display image, a landmark, and a building in order to easily see
- a method of displaying a bird's-eye view representing a pseudo three-dimensional representation of a building and a method of displaying roads and buildings as a three-dimensional polygon image using the Z-buffer method have been proposed.
- Patent Document 2 Japanese Patent Application Laid-Open No. 2001-27535 discloses a map display device that displays buildings and roads in a three-dimensional manner.
- the map display device disclosed in Patent Document 2 is configured to display a three-dimensional map with a shadow on a route guide line in a three-dimensional map display.
- the route guide line is in a positional relationship hidden in the building, the overlapping part of the route guide line is displayed in a different color from the overlapping part.
- the display color of the route guide line and the display color of the building on the VRAM (video RAM) are drawn in a semi-transparent method in which pixels are alternately set, and the relative positional relationship between the route guide line and the building is shown. It is clarified to improve the visibility of the route guide line.
- the shape data and height information of the building are stored in the map data, and a road such as a three-dimensional intersection is also stored. Shape data is stored. Based on this map data, the three-dimensional drawing of the standing intersection of buildings and roads is drawn on the drawing section. When the vehicle travels and reaches the position where the route should be guided, a desired image is drawn on the drawing section and output as audio.
- the unit is configured to utter a predetermined voice to guide the user to the destination.
- a three-dimensional display of a map using polygon data is performed as follows.
- each surface constituting each building to be displayed on the map is prepared as polygon data, and the polygon data of the building is sent to the map display device together with the map data.
- the map display device displays a map and displays each building located on the map in three dimensions using polygon data.
- Texture 1 is data indicating the pattern of the surface of the building, such as the shape of the window of the building and the pattern of the wall.
- Patent Document 3 Japanese Patent Laid-Open No. 2000-259861 discloses an invention of a texture mapping device that draws a texture by pasting it onto polygon data. It is shown.
- the invention disclosed in Patent Document 3 pastes a texture accurately and efficiently on a polygon to facilitate subsequent editing.
- This texture mapping device specifies rectangular polygons P1 to P4 arranged in M rows and N columns on the wire frame and the texture to be attached to it.
- the texture to be pasted is divided according to the ratio of the length of 1 ⁇ 1 to 1 ⁇ 12 of the specified polygons P1 to P4.
- the divided texture is configured to be pasted to the corresponding polygon in consideration of the orientation of the polygon.
- polygon data indicating each face of the building and the texture data to be attached to this face have a one-to-one correspondence.
- Polygon data and texture data are stored in advance in the database of the server, and the polygon data and texture data of the building to be displayed on the map are transmitted to the map display device together with a predetermined range of map data.
- map data is displayed three-dimensionally in addition to planar map data in order to display a map in three dimensions.
- Three-dimensional map data has a larger amount of data than planar map data, and a large-capacity storage device is required as a storage device for storing map data.
- the communication load between the terminal device and the route search server increases, and the communication time also increases. For this reason, various problems arise, such as a sufficiently high processing capacity being required for a route search server that provides services to a large number of terminal devices.
- the in-vehicle navigation device captures a landscape in the traveling direction using an imaging means such as a CCD camera, and displays the captured peripheral image on a display screen.
- An imaging means such as a CCD camera
- a navigation device configured to display a guidance image of the direction of the right or left turn superimposed on the surrounding image or to display a guidance route is disclosed in the following Patent Document 4 (Japanese Patent Laid-Open No. 2004-257979) and Patent Document 5 (Japanese Unexamined Patent Publication No. 2006-162442) It is.
- the navigation device disclosed in Patent Document 4 includes an imaging unit that captures a scene in the traveling direction and a display unit that displays an image captured by the imaging unit, and is detected by the path detection unit.
- an image for guiding the direction of travel at the branch point is superimposed on the image taken by the imaging means and displayed on the display means It is comprised as follows.
- the guide information specifying unit includes a position on the map for presenting the guide information, a guide information specifying unit for specifying the type of guide information to be presented, Obstacle detection unit that detects the position and type of obstacles (pedestrians, vehicles, etc.) around the vehicle by image recognition, etc., and does not overlap with the obstacle detected as the display position of guidance information
- Patent Document 6 Japanese Patent Publication No. 2005-241385
- a portable terminal device navigation device for display is disclosed.
- This mobile terminal device defines a screen of a digital camera based on the current position of the user (destination guidance device), defines destination direction coordinates corresponding to the destination on this screen, and determines a predetermined reference point ( It is configured to display instructions for destination direction coordinates on the screen, superimposed on the camera image, with the screen bottom center) as a reference.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2001-165681 (FIGS. 1 and 2)
- Patent Document 2 JP 2001-27535 A (FIG. 1, FIG. 4, paragraph [0054])
- Patent Document 3 Japanese Patent Laid-Open No. 2000-259861 (Figs. 2 and 8)
- Patent Document 4 Japanese Patent Laid-Open No. 2004-257979 (FIG. 4)
- Patent Document 5 Japanese Unexamined Patent Application Publication No. 2006-162442 ( Figures 4 and 5)
- Patent Document 6 Japanese Patent Laid-Open No. 2005-241385 (FIG. 9) Disclosure of the invention
- the navigation device for pedestrians is different from the in-vehicle navigation device in that the navigation device is not fixed in the advancing direction like in-vehicle use.
- the orientation of the terminal device when displaying a map image or a guidance route is completely arbitrary, and there is no guarantee that the guidance route is included in the display screen at that time.
- the horizontal angle of view of the camera is sufficiently small compared to 360 degrees, so the probability that the guide route is included in the screen display is rather small. For this reason, the technology of the in-vehicle navigation device disclosed in Patent Document 4 and Patent Document 5 cannot be applied as it is.
- this mobile terminal is configured to capture a landscape in the traveling direction with a camera and display a guide route (traveling direction) on the image, and the camera is directed in the traveling direction.
- a guide route traveling direction
- the user When the vehicle is in the correct direction of travel with respect to the guidance route at an intersection, etc., the guidance route, right turn, and left turn guidance can be displayed on the screen on which the image captured by the camera is displayed.
- Orientation i.e., when the orientation of the mobile terminal is not in the direction of travel, the guidance route and the image taken with the camera to the user without entering the guidance route on the screen on which the image captured by the camera is displayed If you can't indicate the direction of travel!
- a portable terminal device in a communication-type pedestrian navigation system includes an imaging means such as a CCD camera, a magnetic orientation sensor, a tilt sensor, and the like.
- a posture detection unit configured to detect the direction in which the mobile terminal device is facing and the angle with respect to the horizontal by the posture detection unit, and the surrounding image captured by the imaging unit does not include a guide route.
- the present invention has an object to solve the above-mentioned problems, and when displaying a route guidance image on a peripheral image captured by an imaging unit, the route image cannot be displayed on the peripheral image.
- An object of the present invention is to provide a pedestrian navigation system that guides an imaging direction in which a route image can be displayed.
- the first invention of the present application is:
- a route search server provided with route search means for searching for a guide route from the departure point to the destination with reference to network data for route search; guidance information storage means for storing guide information including guide route data; GPS receiving means for measuring the current position, imaging means, display means for displaying a peripheral image captured by the imaging means, and drawing for displaying a guidance route image or a traveling direction guidance image on the peripheral image displayed on the display means
- a navigation system comprising a control means and a mobile terminal device comprising
- the portable terminal device further includes a posture detection unit that detects a posture of the portable terminal device when the imaging unit picks up a peripheral image, and a guidance route based on the posture of the portable terminal device detected by the posture detection unit.
- Image layout means for determining the display position of the image or the traveling direction guide image, and When the image layout means determines that the surrounding image displayed on the display means does not include a guide route, the drawing control means guides the imaging direction guide image that guides the direction to be imaged by the imaging means. Is displayed on the peripheral image.
- the posture detecting means detects an orientation detecting means for detecting a direction of the imaging means when the imaging means picks up a peripheral image, and detects an inclination angle of the imaging means with respect to a horizontal direction. It is preferable that it is comprised including the inclination-angle detection means to do.
- the image layout means is based on the attitude of the mobile terminal device detected by the attitude detection means when the peripheral image displayed on the display means includes a guide route. It is preferable that the display position of the guide route image or the traveling direction guide image displayed on the peripheral image is determined.
- the drawing control unit when the image layout unit determines that the surrounding image displayed on the display unit does not include a guide route, the drawing control unit
- the imaging direction guide image that guides the direction in which the guide route exists is displayed on the peripheral image as the direction in which the imaging unit should take an image.
- the imaging direction guide image displayed by the drawing control means is displayed using an image different from the traveling direction guide image.
- the second invention of the present application is:
- a mobile terminal device connected via a network to a route search server having route search means for searching for a guide route from a departure point to a destination with reference to network data for route search, wherein the guide route data is Guidance information storage means for storing the guidance information including, GPS receiving means for positioning the current position, imaging means, display means for displaying the peripheral image captured by the imaging means, and peripheral images displayed on the display means
- Guidance information storage means for storing the guidance information including, GPS receiving means for positioning the current position, imaging means, display means for displaying the peripheral image captured by the imaging means, and peripheral images displayed on the display means
- a portable terminal device comprising a drawing control means for displaying a guidance route image or a traveling direction guidance image
- the portable terminal device further includes a posture detection unit that detects a posture of the portable terminal device when the imaging unit picks up a peripheral image, and a guidance route based on the posture of the portable terminal device detected by the posture detection unit. Determine the display position of the image or direction guidance image
- a posture detection unit that detects a posture of the portable terminal device when the imaging unit picks up a peripheral image, and a guidance route based on the posture of the portable terminal device detected by the posture detection unit. Determine the display position of the image or direction guidance image
- the drawing control means guides the imaging direction guide image that guides the direction to be imaged by the imaging means. Is displayed on the peripheral image.
- the posture detection means detects an orientation detection means for detecting the orientation of the image pickup means when the image pickup means picks up a peripheral image and an inclination angle of the image pickup means with respect to the horizontal direction. It is preferable that it is comprised including the inclination-angle detection means to do.
- the image layout means is based on the attitude of the mobile terminal device detected by the attitude detection means when the peripheral image displayed on the display means includes a guide route. It is preferable that the display position of the guide route image or the traveling direction guide image displayed on the peripheral image is determined.
- the drawing control means when the image layout means determines that the surrounding image displayed on the display means does not include a guide route, the drawing control means
- the imaging direction guide image that guides the direction in which the guide route exists is displayed on the peripheral image as the direction in which the imaging unit should take an image.
- the imaging direction guide image displayed by the drawing control means is displayed using an image different from the traveling direction guide image.
- the third invention of the present application is:
- a mobile terminal device connected via a network to a route search server having route search means for searching for a guide route from a departure point to a destination with reference to network data for route search, wherein the guide route data is Guidance information storage means for storing the guidance information including, GPS receiving means for positioning the current position, imaging means, display means for displaying the peripheral image captured by the imaging means, and peripheral images displayed on the display means
- Guidance information storage means for storing the guidance information including, GPS receiving means for positioning the current position, imaging means, display means for displaying the peripheral image captured by the imaging means, and peripheral images displayed on the display means
- the portable terminal device further includes a posture detection unit that detects a posture of the portable terminal device when the imaging unit picks up a peripheral image, and a portable terminal device detected by the posture detection unit.
- Image layout means for determining the display position of the guide route image or the traveling direction guide image based on the posture of
- the image layout means determines whether the peripheral image displayed on the display means includes a guidance route, and the image layout means has a guidance route on the peripheral image displayed on the display means.
- the drawing control means includes a step of displaying, on the peripheral image, an imaging direction guide image for guiding a direction to be imaged by the imaging means when it is determined that the image is not included.
- the posture detection means detects an orientation detection means for detecting the orientation of the image pickup means when the image pickup means picks up a peripheral image, and detects an inclination angle of the image pickup means with respect to the horizontal direction. And an inclination angle detecting means for
- the image layout unit in the step of determining whether or not the image layout unit includes a guide route in the peripheral image displayed on the display unit, includes the step When it is determined that a guidance route is included in the peripheral image displayed on the display means, the guidance route image displayed on the peripheral image or the display based on the attitude of the mobile terminal device detected by the attitude detection means or It is preferable to further comprise a step of determining the display position of the traveling direction guide image.
- the image layout means in the step of determining whether or not the image layout means includes a guide route in the peripheral image displayed on the display means, includes An imaging direction in which, when it is determined that the guide route is not included in the peripheral image displayed on the display unit, the drawing control unit guides the direction in which the guide route exists as the direction to be imaged by the imaging unit. It is preferable to further comprise a step of displaying a guide image on the peripheral image. [0041] Furthermore, in the third aspect of the invention, in the step of displaying the imaging direction guide image on the peripheral image, the imaging direction guidance image displayed by the drawing control means is different from the traveling direction guidance image. It is preferable to include a process of displaying using different images.
- the mobile terminal device includes a posture detection unit that detects a posture of the mobile terminal device when the imaging unit captures a peripheral image, and a posture of the mobile terminal device detected by the posture detection unit.
- Image layout means for determining the display position of the guidance route image or the traveling direction guidance image based on the image, and the image layout means determines that the surrounding image displayed on the display means does not include the guidance route
- the drawing control means displays an imaging direction guide image that guides the direction to be imaged by the imaging means on the peripheral image.
- the imaging means captures an image. Since the imaging direction guide image for guiding the power direction is displayed on the peripheral image, the user can change the imaging direction along the imaging direction guide image so that the in-route or traveling direction is displayed on the peripheral image. The orientation of the mobile terminal device can be corrected.
- the posture detection means detects an orientation detection means for detecting a direction of the imaging means when the imaging means picks up a peripheral image, and detects an inclination angle of the imaging means with respect to a horizontal direction. It is preferable that it is comprised including the inclination-angle detection means to do. With this configuration, since the direction (azimuth) and inclination angle of the optical axis captured by the imaging unit can be calculated, the guide route to be displayed and the traveling direction guide image are displayed for the peripheral images. The position can be determined.
- the image layout means is based on the attitude of the portable terminal device detected by the attitude detection means when the surrounding image displayed on the display means includes a guide route. It is preferable that the display position of the guide route image or the traveling direction guide image displayed on the peripheral image is determined. Configure like this If so, it is possible to determine the guide route to be displayed and the display position for displaying the traveling direction guide image with respect to the peripheral image according to the attitude of the mobile terminal device.
- the drawing control unit when the image layout unit determines that the surrounding image displayed on the display unit does not include a guide route, the drawing control unit
- the imaging direction guide image that guides the direction in which the guide route exists is displayed on the peripheral image as the direction in which the imaging unit should take an image.
- the image capturing direction guide image indicating the direction in which the guide route exists is displayed as the direction to be imaged by the image capturing unit. Therefore, the user can easily correct the orientation of the mobile terminal device so that the guide route or the traveling direction is displayed in the peripheral image by changing the imaging direction along the imaging direction guide image. Become.
- the imaging direction plan image displayed by the drawing control means is displayed using an image different from the traveling direction guide image.
- the user can easily distinguish between the traveling direction guide image and the imaging direction plan image.
- the mobile terminal device according to the first invention can be provided, and according to the second invention of the present application, the mobile terminal device according to the second invention.
- the route guidance display method for realizing can be provided.
- FIG. 1 is a block diagram showing a configuration of a navigation system according to an embodiment of the present invention.
- FIG. 2 is a schematic diagram showing the attitude of the mobile terminal device, the optical axis of the imaging means, and the imaging angle.
- FIG. 3 is a diagram showing an example of a display image when a peripheral image captured by the imaging unit is displayed on the display unit in the image guidance mode.
- FIG. 4 is a diagram showing an example of a display image when the optical axis of the imaging unit is the same as the traveling direction of the guide route and the guide route exists within the range of the peripheral image displayed on the display unit.
- FIG. 5 is a diagram showing an example of a display image for explaining a plan image display in the case where the displayed route image includes and does not include the guide route, and FIG. 5B shows the guide route displayed.
- Figure 5A shows a display example when it is included in the surrounding image
- Figure 5A shows a display example when the guidance route exists on the right side of the screen and is not included in the displayed peripheral image.
- FIG. 5C is a diagram showing a display example when the guide route is not included in the displayed peripheral image, and there is a guide route on the left side of the screen.
- FIG. 6 is a plan view showing an example of a geometric relationship between the optical axis of the imaging means and the guide path.
- FIG. 7 is a flowchart showing an operation procedure in the navigation system according to the embodiment of the present invention.
- ⁇ 9 This is a schematic diagram for explaining the concept of traffic network data for route search using transportation facilities.
- FIG. 10 is a diagram showing the structure of map data.
- FIG. 1 is a block diagram showing a configuration of a navigation system that is useful in an embodiment of the present invention.
- the navigation system 10 includes a mobile terminal device 20 and a route search server 30 that are connected via a network 12 such as the Internet.
- the route search server 30 includes route search means 33, a map database 34 that stores map data, a road search network database that stores road network data for route search and traffic network data that is network data for public transportation. Has 3-5.
- the route search server 30 also includes control means 301, communication means 31, and guidance information editing means 32.
- control means 301 is a microprocessor having a RAM, a ROM, and a processor, and controls the operation of each unit by a control program stored in the ROM.
- the communication means 31 is an interface for communicating with the mobile terminal device 20 via the network 12.
- the route search server 30 has a route search request including a route search condition from the mobile terminal device 20, such as a current position, a destination, and a moving means (automobile, walking, transportation, or a combination of walking and transportation).
- the route search network database 35 is referenced to search for a guide route that matches the route search condition.
- Guide route data obtained as a result of route search The map data is displayed in the guide information editing means 32 together with unit map data in a predetermined range including the current position of the mobile terminal device 20 selected from the map database 34 (map data divided into areas of a predetermined size by latitude and longitude). It is edited into guide information (data) for transmission to the mobile terminal device 20.
- the edited guide information is distributed to the mobile terminal device 20.
- the mobile terminal device 20 includes a control unit 201, a GPS reception unit 21, an imaging unit 22, an attitude detection unit 23, an image layout unit 24, a drawing control unit 25, a communication unit 26, a guidance information storage unit 27,
- the display unit 28 and the operation input unit 29 are provided.
- the control means 201 is a microprocessor having a RAM, a ROM, and a processor (not shown), and controls the operation of each unit by a control program stored in the ROM.
- the communication means 26 is an interface for communicating with the route search server 30 via the network 12.
- the operation input means 29 is for operation 'input means such as numeric keys, alphabet keys, other function keys, selection keys, scroll keys and the like, and is displayed on the display means 28 as output means.
- the menu screen power can be selected by selecting a desired menu or by operating keys to perform various input operations. Therefore, the display means 28 also functions as a part of the operation input means 29.
- the user When the user wants to request a route search from the route search server 30, the user operates the operation input means 29 in the mobile terminal device 20 and selects the route search from the service menu displayed on the display means 28. Enter the route search conditions such as the current position, destination, and means of transportation (automobile, walking, transportation or combined use of walking and transportation, etc.). The input route search conditions are edited into a distribution request to the route search server 30 and transmitted to the route search server 30 via the communication means 26 as a route search request.
- the route search conditions such as the current position, destination, and means of transportation (automobile, walking, transportation or combined use of walking and transportation, etc.).
- the input route search conditions are edited into a distribution request to the route search server 30 and transmitted to the route search server 30 via the communication means 26 as a route search request.
- the mobile terminal device 20 When the mobile terminal device 20 receives the guide information as a result of the route search from the route search server 30, the mobile terminal device 20 temporarily stores the guide information in the guide information storage means 27. Usually, based on this guidance information, a map image and an image of a guidance route are displayed on the display means 28 around the current position of the mobile terminal device 20. At this time, the current position mark is displayed at the corresponding position on the map image. When the current position approaches an intersection node, etc. on the guidance route, a traveling direction guidance image that indicates the traveling direction such as right turn, left turn, or straight ahead at the intersection node appears. Indicated. Further, when the mobile terminal device 20 includes output means such as a speaker, the mobile terminal device 20 can be configured to provide voice guidance for guiding the distance to the intersection node and the traveling direction by voice.
- the map display as described above is in the normal guidance mode.
- an image guidance mode is provided in which a peripheral image is picked up by the image pickup means 22 and the peripheral image is displayed on the display means 28, and a guide route image and a traveling direction guide image are displayed and guided.
- this image guidance mode is referred to as a live-action mode.
- the posture detection means 23 detects the posture of the mobile terminal device 20 and automatically switches to the live-action mode when it is in a predetermined state.
- the operation input means 29 may allow the user to switch.
- the focal length (ZOOM) of the photographing means 22 (for example, a CCD camera) of the portable terminal device 20 and the screen size of the display means 28 are fixed to predetermined set values. Since the GPS receiving means 21 measures the current position of the mobile terminal device 20 at predetermined time intervals, the imaging means 22 is operated, and the position where the peripheral image is taken can be specified. The positioning interval by the GPS receiving means 22 is, for example, every 1 second to every 5 seconds when the mobile terminal device 20 is a mobile phone.
- the posture detection means 23 detects this and automatically picks up the image pickup means. 2
- the shutter in 2 is activated and a peripheral image (still image) in the optical axis direction is taken.
- the attitude detection means 23 is composed of an azimuth sensor and an inclination sensor, the direction (azimuth) of the optical axis can be obtained from the azimuth sensor output, and the angle between the optical axis and the horizontal direction can be obtained from the inclination sensor output. it can.
- the direction of the optical axis and the tilt angle are stored together with the peripheral image captured by the imaging means 22.
- the imaging angle of the imaging means 22 has a certain angle, and the captured peripheral moving image is captured in a sufficiently wide range even at a portion outside the display range.
- the peripheral image thus captured may be displayed as it is on the display means 28, but in the present embodiment, the following correction is added.
- the image is shifted by an amount corresponding to the angle that the optical axis is horizontal, so that the center of the image is in the horizontal direction.
- the height (distance) of the optical axis from the ground surface is the height of the eyes of a person having a general height.
- FIG. 2 is a schematic diagram showing the posture, optical axis, and imaging angle of the imaging means 22.
- the posture detection means 23 detects the angle formed by the optical axis AX of the imaging means 22 and the horizontal direction, and If it is within the angle range, the shutter automatically operates to capture the front image.
- the imaging angle in the vertical direction with respect to the optical axis AX at this time is a.
- each of the points P1, P2, and P3 ahead of the imaging point P is calculated from the angles ⁇ 1, ⁇ 2, and ⁇ 3 formed with the optical axis AX, respectively. It is possible to calculate geometrically from the above angle which position in the displayed image corresponds to the point where the imaging position force is. That is, in FIG. 2, the point P1 is 3 m ahead of the imaging point P and is an angle ⁇ 1 made with the optical axis. The point P2 is 10m ahead of the image point P, and is the angle ⁇ 2 made with the optical axis. Point P3 (not shown) is 30m ahead of the image point P, and is an angle ⁇ 3 with the optical axis.
- FIG. 3 is a diagram showing an example of a display image when the peripheral image captured by the imaging unit 22 in this way is displayed on the display unit 28.
- the peripheral image is displayed so that the center of the display screen (the intersection of lines X and Y in Fig. 3) coincides with the optical axis AX and is horizontal.
- the image of the point PI (3m ahead) from the imaging point P is the angle ⁇ 1 made with the optical axis, and corresponds to the bottom of the display image.
- the point P2 (10m ahead) is at the angle ⁇ 2 made with the optical axis and corresponds to the position of the line L1 shown in the display image.
- the point 20m ahead is the position of line L2
- the point 3 Om ahead is the position of line L3.
- the display position of the guide route image to be displayed can be determined depending on how many meters ahead from the imaging point the guide route is displayed, and the display position is always stable.
- the route can be guided with the selected image, and the calculation processing of the display position can be simplified.
- the position and direction of the guide route is obtained based on the position information (current position at the time of image capture) when the peripheral image is captured, that is, when the still image is acquired.
- the direction of travel of the guide path is the same as that of the optical axis AX, the guide path exists within the range of the surrounding image displayed on the screen, and the guide path image GRI turns 30m ahead from the imaging point.
- FIG. 6 is a diagram showing an example of a display image drawn by being superimposed on an image.
- the image layout means 24 is based on the detection output of the attitude detection means 23.
- the display position of the guide route image GRI is determined by performing the above calculation.
- FIG. 5 is a diagram showing an example of a display image for explaining guidance image display when the displayed peripheral image includes and does not include the guidance route, and FIG. 5B shows the guidance route displayed.
- Fig. 5A shows a display example when it is included in the peripheral image (Fig. 4).
- Fig. 5A shows a display example when the guide route is not included in the displayed peripheral image and there is a guide route on the right side of the screen.
- FIG. 5C is a diagram showing a display example when the guide route is not included in the displayed peripheral image and there is a guide route on the left side when facing the screen.
- FIG. 5A shows a display image when facing the left side with respect to the guide route, and the guide route is not included at all. Therefore, the display is lost and the user is confused.
- which of the peripheral images displayed on the display screen is determined based on the position and optical axis angle at which the imaging unit 22 captures the peripheral image, and the position of the node of the route that is the guide route and the link angle.
- the force that has the guide route and its direction of travel on the side is determined by geometric calculation.
- an imaging direction guide image for example, a triangle mark
- the user is prompted to change the imaging direction. If the user changes the imaging direction in accordance with the imaging direction guide image, it is possible to display the guidance route image and the traveling direction guidance image in the peripheral image displayed on the display screen of the display means 28.
- FIG. 5A shows the case where the guide route is on the right side with respect to the guide route GRI, and the guide route can be seen in the distance, but the direction of travel of the guide route from the current location P is on the left side, so turn left!
- a shooting direction guide image (triangular mark) 53 is displayed for instructing to take an image.
- the surrounding image displayed on the display screen includes a guidance route.
- the guide route image GRI and the traveling direction guide image 51 can be displayed.
- This imaging direction guidance image (triangle mark) is a different image (mark) from the traveling direction guidance image (arrow mark in FIG. 5B) that shows the direction of turning left and right at a guidance point such as an intersection. It is good to make the difference immediately.
- FIG. 6 is a schematic diagram for explaining the concept of calculating the imaging direction from the positional relationship between the direction of the optical axis and the guide path.
- the geometrical relationship between the optical axis AX (imaging direction) of the imaging means 22 and the guide path GR is shown.
- the scientific relationship is shown as a plan view.
- the image pickup means 22 picks up a peripheral image at the point P in the direction of the optical axis AX
- the peripheral image displayed on the display screen of the display means 28 has an angle ⁇ (view angle) about the optical axis AX. Image).
- the guide route image GRI is displayed (Fig. 5B).
- the imaging position P is a guidance point such as an intersection
- a traveling direction guidance image 51 is displayed.
- FIG. 5C shows the case where the mobile terminal device 20 (imaging means 22) is facing the right side with respect to the guide route GR1, and the route is visible far away, but the traveling direction of the guide route from the current location is the left side. Therefore, an imaging direction instruction image indicating that it faces the left side is displayed. This point is different from the display method in which the destination direction is displayed on the display screen, and is a characteristic point of the present invention.
- FIG. 5A shows a case where the mobile terminal device 20 (imaging means 22) faces left with respect to the guide route GR1, and the direction of travel of the guide route from the current location is on the right side.
- An imaging direction instruction image indicating that the camera is facing is displayed.
- the image layout unit 24 performs the above calculation based on the detection output of the posture detection unit 23 to determine whether the surrounding image displayed on the display screen of the display unit 28 includes the guide route GR.
- FIG. 7 is a flowchart showing a route guidance operation procedure in the navigation system according to the embodiment of the present invention described above. It is assumed that the mobile terminal device 20 makes a route search request to the route search server 30, receives guidance information including data such as guidance route data and guidance points from the route search server 30 and temporarily stores it.
- the map image displayed on the display means 28 in this state is a general display mode using a planar map image.
- the mobile terminal 20 (the optical axis of the imaging means 22) is within a predetermined angle range with respect to the horizontal direction.
- the predetermined angle range may be set to an average angle when a general person holds a camera for imaging.
- step S109 If the tilt angle of the mobile terminal device 20 is within a predetermined angle range with respect to the horizontal! /, (NO), the process proceeds to step S109, and the normal mode, that is, the display using the plane map is performed. The process returns to step S101. If the tilt angle is within a predetermined angle range with respect to the horizontal (YES), the shutter of the imaging means 22 automatically operates in step S102 to capture a peripheral image in the optical axis direction. Next, in the process of step S103, the drawing control means 25 switches to the display control in the live-action mode.
- the image data captured by the imaging means 22 in the process of step S102 is the current position at the time of imaging, the tilt angle detected by the attitude detection means 23, the optical axis is directed in the process of step S104, and Along with data such as the orientation (the orientation of the mobile terminal device 20) and the like are temporarily stored in an appropriate memory means.
- image layout means 24 6 refers to the guide route data stored in the guide information storage means 27 based on the angle of view ⁇ with respect to the optical axis as described with reference to FIG. 6, and the traveling direction of the guide route at the imaging point (current position) Is determined.
- step S105 when the current position, that is, from the imaging position, is within the range of the advancing direction force angle of view ⁇ of the guide path, the process proceeds to step S106, and the image layout means 24 is shown in FIG.
- the display positions of the guide route image and the traveling direction plan image are calculated, and the drawing control means 25 determines a predetermined peripheral image captured by the imaging means 22 based on the calculation result.
- a guide route image and a traveling direction guide image are displayed at the display position (see FIG. 5B).
- step S105 if the traveling direction of the guide route viewed from the imaging position is not included in the angle of view ⁇ and is on the left side when viewed from the optical axis AX, the process proceeds to step S108.
- the drawing control means 25 displays an instruction to change the imaging direction to the left (imaging direction guide image 53 in FIG. 5C).
- the traveling direction of the guide route from the imaging position P is not included in the angle of view ⁇ and is on the right side when viewed from the optical axis AX
- the process proceeds to step S107, and the drawing control means 25 turns the imaging direction to the right side. Display an instruction to change (image direction guidance image 52 in FIG. 5A).
- the route search network database 35 includes road network data and traffic network data. These network data are structured as follows. For example, if the road has roads A, B, and C as shown in Fig. 8, the end points, intersections, and inflection points of roads A, B, and C are used as nodes, and the roads connecting the nodes are directed links. Link cost data with node data (node latitude and longitude), link data (link number) and link cost of each link (link distance or time required to travel the link) as data Composed of
- Nn ( ⁇ mark) and Nm (( ⁇ ) mark) indicate nodes
- Nm (( ⁇ ) mark) indicates a road intersection.
- Directional links connecting each node are indicated by arrow lines (solid line, dotted line, two-dot chain line).
- the links there are links facing in the upward and downward directions of the road.
- FIG. 8 only the links in the direction of the arrows are shown in order to simplify the illustration.
- the traffic network data for route search of transportation facilities is configured as follows.
- each station (each airport on an aircraft route) provided on each of the traffic routes A, B, and C is a node, and between each node
- the section to be connected is represented by a directional link, and node data (latitude / longitude) and link data (link number) are used as network data.
- Nn ( ⁇ mark) and Nm ( ⁇ mark) indicate nodes
- Nm ( ⁇ mark) indicates a transit point (such as a transfer station) on a traffic route, indicating a directional connection between the nodes.
- Links are indicated by arrow lines (solid line, dotted line, two-dot chain line).
- the link is a force in which there are links facing in the up and down directions of the traffic route.
- FIG. 9 only the links in the direction of the arrows are shown in order to simplify the illustration.
- the traffic network basically differs in link cost from the road network.
- trains and airplanes that operate traffic routes (hereinafter referred to as individual trains and airplanes).
- the time to depart from each node and the time to arrive at the next node is determined (specified by timetable data and operation data), and each route is not necessarily linked to an adjacent node. Shi There may not be. This is the case, for example, with express trains and trains that stop at each station. In such cases, there will be multiple different links on the same route, and the required time between nodes may vary depending on the mode of transportation.
- the guidance route searched with reference to such network data is distributed to the mobile terminal device 20 together with the vector map data.
- the map data stored in the map database 34 is also composed of unit map data power divided by a predetermined latitude and longitude range.
- map data is divided into map areas in units of predetermined latitude and longitude, and is configured as mesh unit map data Ml 1 to M33.
- the unit map data M21, M23 which are adjacent to the unit map data M22 including the current position PP of the mobile terminal device 20 in the vertical direction, the horizontal direction, and the diagonal direction.
- M12, M32, Mi l, M13, M31, M33 total 9 units The figure is distributed.
- the route search server 30 delivers the insufficient unit map data.
- the guide route data is distributed to the mobile terminal device 20 together with the vector map data.
- the mobile terminal device 20 receives the map data and the guidance route data from the route search server 30 in this way, and displays the map and the guidance route on the display means 28.
- the present invention can be used as a method for instructing the direction in which the guide route can be seen even when the pedestrian deviates slightly from the route force and the guide route disappears from the display screen.
- the peripheral image captured by the imaging unit 22 is a still image.
- a moving image may be used. Good.
- the posture detection means 23 detects this and the shutter of the image pickup means 22 is automatically activated. Therefore, the mode is automatically switched to the live-action mode, and when the condition is not satisfied, the normal map display mode is restored. Therefore, it is possible to maintain the safety of walking without going into the live-action mode by displaying the peripheral image captured by the imaging means 22 during walking.
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- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
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- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
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Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2006/320461 WO2008044309A1 (en) | 2006-10-13 | 2006-10-13 | Navigation system, mobile terminal device, and route guiding method |
KR1020097007604A KR101084450B1 (ko) | 2006-10-13 | 2006-10-13 | 네비게이션 시스템, 휴대 단말 장치 및 경로 안내 방법 |
JP2007523913A JP4068661B1 (ja) | 2006-10-13 | 2006-10-13 | ナビゲーションシステム、携帯端末装置および経路案内方法 |
CN2006800560825A CN101523158B (zh) | 2006-10-13 | 2006-10-13 | 导航***、便携终端装置及路径向导方法 |
US12/445,237 US20100070162A1 (en) | 2006-10-13 | 2006-10-13 | Navigation system, mobile terminal device, and route guiding method |
EP06811740.7A EP2080983B1 (en) | 2006-10-13 | 2006-10-13 | Navigation system, mobile terminal device, and route guiding method |
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PCT/JP2006/320461 WO2008044309A1 (en) | 2006-10-13 | 2006-10-13 | Navigation system, mobile terminal device, and route guiding method |
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US (1) | US20100070162A1 (ja) |
EP (1) | EP2080983B1 (ja) |
JP (1) | JP4068661B1 (ja) |
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CN (1) | CN101523158B (ja) |
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Also Published As
Publication number | Publication date |
---|---|
CN101523158A (zh) | 2009-09-02 |
EP2080983A1 (en) | 2009-07-22 |
KR101084450B1 (ko) | 2011-11-21 |
EP2080983A4 (en) | 2012-01-04 |
EP2080983B1 (en) | 2014-07-02 |
CN101523158B (zh) | 2013-01-16 |
KR20090052903A (ko) | 2009-05-26 |
JPWO2008044309A1 (ja) | 2010-02-04 |
US20100070162A1 (en) | 2010-03-18 |
JP4068661B1 (ja) | 2008-03-26 |
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