CN112562375A - Augmented reality road name display method and system, mobile terminal and vehicle-mounted terminal - Google Patents
Augmented reality road name display method and system, mobile terminal and vehicle-mounted terminal Download PDFInfo
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- CN112562375A CN112562375A CN202011458889.XA CN202011458889A CN112562375A CN 112562375 A CN112562375 A CN 112562375A CN 202011458889 A CN202011458889 A CN 202011458889A CN 112562375 A CN112562375 A CN 112562375A
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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
- G08G1/096855—Systems involving transmission of navigation instructions to the vehicle where the output is provided in a suitable form to the driver
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Abstract
The invention relates to the technical field of augmented reality display, and provides a road name display method for augmented reality, which specifically comprises the following steps: s1, shooting a road image and acquiring the name of the current road based on the road name display instruction; s2, converting the road name into an image to form a road name image; and S3, fusing the road name image to the road image, and outputting and displaying the road name image. Under the condition of starting positioning, the camera is utilized to shoot the road, the road name is identified, and the road name is perfectly superposed in the shot road picture in an augmented reality mode.
Description
Technical Field
The invention relates to the field of augmented reality display, and provides a road name display method and system for augmented reality, a mobile terminal and a vehicle-mounted terminal.
Background
With the continuous expansion of the urban scale, roads become intricate and complex. In a complex urban environment, people often get lost or even cannot know the name of the road. In conventional road acquisition, a road sign may acquire a current road name. However, signs are not ubiquitous on certain roads. In recent years, with the popularization of navigation and positioning functions, people have begun to acquire road names using navigation tools. However, for people who are not familiar with navigation operations or who have difficulty in recognizing navigation information, road names cannot be acquired in a friendly interactive manner. These drawbacks bring certain troubles to people going out.
Disclosure of Invention
The invention provides a road name display method for augmented reality, aiming at improving the problems.
The invention is realized in this way, a road name display method of augmented reality, the method includes the following steps:
s1, shooting a road image and acquiring the name of the current road based on the road name display instruction;
s2, converting the road name into an image to form a road name image;
and S3, fusing the road name image to the road image, and outputting and displaying the road name image.
Further, the method for fusing the road name image and the road image specifically comprises the following steps:
s31, using the top left corner of the road imageThe point is the origin of coordinates O (0,0), and the abscissa 1/2R of the projection base point P is the 1/2 position of the road image widthwThe road image height 3/4 position is the ordinate 3/4R of the projection base point Ph；
S32, based on projection base point P (P)x，Py) And projecting the road name image to the specified position of the road image through perspective transformation, and outputting the road name with the effect of the size along the extending direction of the road.
Further, the position coordinates of the four vertices of the road name image in the road image are sequentially (A)x，Ay)、(Bx，By)、(Cx，Cy)、(Dx，Dy) The coordinates are determined as follows:
abscissa A of top left vertex Ax＝Px-Iw/4, ordinate A of the top left vertex Ay＝Py-Ih/2；
Abscissa B of upper right vertex Bx＝Px+Iw/4, ordinate B of the top right vertex By＝Py-Ih/2；
Abscissa C of lower right corner vertex Cx＝Px+Iw/2, ordinate C of the lower right corner vertex Cy＝Py+Ih/2；
Abscissa D of lower left corner vertex Dx＝Px-Iw/2, ordinate D of the lower left corner vertex Dy＝Py+Ih/2；
Wherein, Iw、IhRespectively the width and height of the road name image.
Further, the road name display instruction is automatically generated according to the following conditions:
condition 1) the positioning device is in an open state; condition 2) the network of the apparatus integrating the positioning device is in an on state; condition 3) the camera is in an activated state.
The present invention is thus implemented, an augmented reality road name presentation system, said system comprising:
the camera is used for acquiring a road image;
a positioning device for positioning the current road of the vehicle in real time
And the processing unit is used for displaying the name of the road in the road surface image based on the augmented reality road name display method.
The invention is realized in such a way that a mobile terminal is integrated with an augmented reality road name display system.
The invention is realized in such a way that the vehicle-mounted terminal is characterized in that an augmented reality road name display system is integrated on the vehicle-mounted terminal.
The invention provides a novel road name display method based on augmented reality, which is characterized in that under the condition of starting positioning, a camera is utilized to shoot a road, the road name is identified, and the road name is perfectly superposed in a shot road picture in an augmented reality mode.
Drawings
FIG. 1 is a schematic diagram of a road name display system for providing augmented reality according to an embodiment of the present invention;
fig. 2 is a flowchart of a road name display method for augmented reality according to an embodiment of the present invention;
fig. 3 is a road name display diagram of augmented reality according to an embodiment of the present invention.
Detailed Description
The following description of preferred embodiments of the invention will be made in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a road name display system for providing augmented reality according to an embodiment of the present invention, and for convenience of description, only a part related to the embodiment of the present invention is shown.
The system comprises:
the camera is used for acquiring a road image;
a positioning device for positioning the current road of the vehicle in real time
And the processing unit is used for fusing the name of the road to the road image and displaying the road image.
In the embodiment of the present invention, the camera and the positioning device are integrated in the same vehicle-mounted terminal or mobile terminal, or the camera, the positioning device and the processing unit are integrated in the same vehicle-mounted terminal or mobile terminal, and the mobile terminal includes: the camera and the positioning unit of the mobile phone, the tablet computer and the like can be the camera and the positioning device integrated with the mobile terminal.
Fig. 2 is a flowchart of a road name display method for augmented reality according to an embodiment of the present invention, where the method specifically includes the following steps:
s1, shooting a road image and acquiring the name of the current road based on the road name display instruction;
in the embodiment of the invention, the road name display instruction meets the following conditions which are automatically generated, wherein the conditions are as follows: condition 1) the positioning device is in an open state; condition 2) the network of the apparatus integrating the positioning device is in an on state; condition 3) the camera is in an activated state.
In another embodiment of the present invention, the road name display instruction is generated based on a trigger unit, the trigger unit is a virtual key on the mobile terminal, after the virtual key is triggered, the road name display instruction is generated, the positioning device is controlled to be in an on state based on the road name display instruction, the network of the device where the positioning device is located is in the on state, and the camera is in the on state.
In real time, when the motion track of the equipment where the positioning device is located is in a road area, the name of the current road is the name of the road where the positioning device is located, and when the motion track of the equipment where the positioning device is located is in a non-road area, the name of the current road is the name of the road closest to the current position.
S2, converting the road name into an image to be a road name image, and fixing the width I of the road name imagewAnd height IhFixing the height R of the road imagehAnd a width Rw；
And S3, fusing the road name image to the road image, and outputting and displaying the road name image.
In the embodiment of the invention, the method for fusing the road name image and the road image specifically comprises the following steps:
s31, abscissa 1/2R using the top left corner of the road image as origin O (0,0) and the position 1/2 of the road image width as the base point of projectionwOrdinate 3/4R with road image height 3/4 position as projection base pointhProjecting a base point P (P)x，Py)＝(1/2Rw，3/4Rh)；
S32, based on projection base point P (P)x，Py) The road name image is projected to a specified position of the road image through perspective transformation, the road name is output in a near-far effect along the extending direction of the road, and fig. 3 is a real display diagram of the road name which is taken as a carrier by a mobile phone in the road image.
In the embodiment of the invention, the four vertexes of the road name image comprise an upper left vertex A, an upper right vertex B, a lower right vertex C and a lower left vertex D, and the position coordinates of the four vertexes in the road image are sequentially (A)x，Ay)、(Bx，By)、(Cx，Cy)、(Dx，Dy) The coordinates are determined as follows:
abscissa A of top left vertex Ax＝Px-Iw/4, ordinate A of the top left vertex Ay＝Py-Ih/2；
Abscissa B of upper right vertex Bx＝Px+Iw/4, ordinate B of the top right vertex By＝Py-Ih/2；
Abscissa C of lower right corner vertex Cx＝Px+Iw/2, ordinate C of the lower right corner vertex Cy＝Py+Ih/2；
Abscissa D of lower left corner vertex Dx＝Px-Iw/2, ordinate D of the lower left corner vertex Dy＝Py+Ih/2。
However, the specific implementation of the present invention is not limited by the above-mentioned manner, and various insubstantial modifications made by the method concept and technical scheme of the present invention are within the protection scope of the present invention.
Claims (7)
1. An augmented reality road name display method is characterized by specifically comprising the following steps:
s1, shooting a road image and acquiring the name of the current road based on the road name display instruction;
s2, converting the road name into an image to form a road name image;
and S3, fusing the road name image to the road image, and outputting and displaying the road name image.
2. The augmented reality road name display method according to claim 1, wherein the road name image and road image fusion method specifically comprises the following steps:
s31, using the top left corner of the road image as the origin of coordinates O (0,0), and using the 1/2 position of the road image width as the abscissa 1/2R of the projection base point PwThe road image height 3/4 position is the ordinate 3/4R of the projection base point Ph；
S32, based on projection base point P (P)x，Py) And projecting the road name image to the specified position of the road image through perspective transformation, and outputting the road name with the effect of the size along the extending direction of the road.
3. The augmented reality road name presentation method of claim 2, wherein the position coordinates of the four vertices of the road name image in the road image are sequentially (a)x，Ay)、(Bx，By)、(Cx，Cy)、(Dx，Dy) The coordinates are determined as follows:
abscissa A of top left vertex Ax＝Px-Iw/4, top left cornerOrdinate A of the point Ay＝Py-Ih/2；
Abscissa B of upper right vertex Bx＝Px+Iw/4, ordinate B of the top right vertex By＝Py-Ih/2；
Abscissa C of lower right corner vertex Cx＝Px+Iw/2, ordinate C of the lower right corner vertex Cy＝Py+Ih/2；
Abscissa D of lower left corner vertex Dx＝Px-Iw/2, ordinate D of the lower left corner vertex Dy＝Py+Ih/2；
Wherein, Iw、IhRespectively the width and height of the road name image.
4. The augmented reality road name display method of claim 1, wherein the road name display instruction is automatically generated according to the following conditions:
condition 1) the positioning device is in an open state; condition 2) the network of the apparatus integrating the positioning device is in an on state; condition 3) the camera is in an activated state.
5. An augmented reality road name presentation system, the system comprising:
the camera is used for acquiring a road image;
a positioning device for positioning the current road of the vehicle in real time
A processing unit for displaying the name of the road on the road surface image based on the augmented reality road name display method of claims 1 to 4.
6. A mobile terminal, characterized in that the augmented reality road name presentation system of claim 5 is integrated on the mobile terminal.
7. An in-vehicle terminal, characterized in that the augmented reality road name display system of claim 5 is integrated on the in-vehicle terminal.
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| CN107687863A (en) * | 2017-08-31 | 2018-02-13 | 城市生活（北京）资讯有限公司 | A kind of road name display methods and system |
| CN110926487A (en) * | 2018-09-19 | 2020-03-27 | 阿里巴巴集团控股有限公司 | Driving assistance method, driving assistance system, computing device, and storage medium |
| CN111928868A (en) * | 2020-09-22 | 2020-11-13 | 蘑菇车联信息科技有限公司 | Navigation map road name display method and device and electronic equipment |
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2020
- 2020-12-11 CN CN202011458889.XA patent/CN112562375A/en active Pending
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| US20080195315A1 (en) * | 2004-09-28 | 2008-08-14 | National University Corporation Kumamoto University | Movable-Body Navigation Information Display Method and Movable-Body Navigation Information Display Unit |
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| CN107687863A (en) * | 2017-08-31 | 2018-02-13 | 城市生活（北京）资讯有限公司 | A kind of road name display methods and system |
| CN110926487A (en) * | 2018-09-19 | 2020-03-27 | 阿里巴巴集团控股有限公司 | Driving assistance method, driving assistance system, computing device, and storage medium |
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Application publication date: 20210326 |