CN112346245B - Near-far view optical path switching method for AR-HUD equipment, terminal equipment and storage medium - Google Patents
Near-far view optical path switching method for AR-HUD equipment, terminal equipment and storage medium Download PDFInfo
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Abstract
The invention relates to a near-far view optical path switching method of AR-HUD equipment, terminal equipment and a storage medium, wherein the method comprises the following steps: judging whether to open a distant view light path according to the relation between the current speed and the speed threshold value and the relation between the current speed and the distance between the current speed and the moving target in front of the current speed, and judging whether to open a close view light path according to the switching state of the view light path, whether to be in a navigation process and the distance between the current speed and the next intersection. The invention can independently control the display logic of the near view light path and the far view light path, ensure the visual effect and prevent interference with the sight of a driver.
Description
Technical Field
The invention relates to the technical field of head-up displays, in particular to a method for switching near-far view optical paths of AR-HUD equipment, terminal equipment and a storage medium.
Background
In view of good visual experience and auxiliary effect on safe driving, HUD (head up display) products are widely and widely applied in the automobile industry at present, especially along with the development of AR (augmented reality) concepts in recent two years, a HUD based on AR technology, namely AR-HUD, is also put forward by a few manufacturers, on the basis of retaining the light path structure (imaging area is within 10 inches and imaging distance is 2-3 meters) of the traditional HUD, a set of augmented reality light path structure is additionally added, an image can be projected to a place (beyond 7 meters) farther in a larger area (more than 40 inches), the projected image (such as the mark of the navigation arrow/the front vehicle position) can be attached to the actual road surface condition, the augmented reality display effect is achieved, and the practicability of the HUD is greatly improved.
The patent application 201710077032.5 "an augmented reality head-up display" refers to an AR-HUD with a dual light path structure, in which the close-range light path is responsible for displaying real-time speed, car navigation information 2-3 meters in front of the driver, and the distant-range light path is responsible for displaying augmented reality symbol information 7-15 meters in front of the driver, etc. The patent with application number 201710571838.X, the patent with application number 201811199649.5, the patent with application number 201880000985.4, the patent with application number HUD system and the method for generating HUD image, and the like, refer to similar structures, and can realize double-image-plane double-imaging distance display. By adopting the HUD light path structure of the idea, two sets of images with different depth of field and different visual senses can be generated, and the images are respectively used for displaying different contents, so that real augmented reality display is realized.
However, none of the above-mentioned patents address another problem of how to control the alternate display of the two sets of HUD light paths (i.e., the near and far view light paths, or the conventional light path and the AR light path). Because, in practical applications, the two sets of HUD light paths each have a suitable scene, they need not be all enabled at all times. If two sets of light paths work simultaneously all the time, not only information redundancy and power waste can be caused, but also uncomfortable experience can be brought to a user if control is improper, and even normal use is affected.
For example, in the navigation process of a complex intersection, the long-range light path can intuitively draw a navigation arrow on a corresponding route to guide a driver to run correctly. At this time, the close-range light path is not necessary to be displayed at all, otherwise, the effect of the far-range light path is disturbed, and even the visual field of a driver is influenced.
For another example, when driving on a road in an urban area, the distance between the front and rear vehicles is often relatively short, and especially when waiting for traffic lights, the distance is often only 3-5 meters. The image of the HUD is projected to the distance of 7-15 meters by the long-range light path, so that the illusion that the image penetrates through a front vehicle is caused, and the experience of a user is influenced. Meanwhile, if the navigation is in progress, the guiding arrow of navigation is probably being played by the long-range light path, the drawn arrow is not overlapped on the actual road surface/lane line, but is overlapped on the front vehicle, and even penetrates into the vehicle, so that visual illusion is caused, and even a driver is misled when the situation is serious.
Disclosure of Invention
In order to solve the problems, the invention provides a near-far view optical path switching method of AR-HUD equipment, terminal equipment and a storage medium.
The specific scheme is as follows:
a near-far view optical path switching method of AR-HUD equipment comprises the following steps:
s1: initially setting a distant view optical path and a close view optical path to be in an open state;
s2: collecting a current vehicle speed, judging whether the current vehicle speed is smaller than a vehicle speed threshold value, and if so, entering S3; otherwise, entering S5;
s3: acquiring front target information of the vehicle, judging whether a moving target exists right in front of the vehicle according to the front target information, and if so, entering S4; otherwise, entering S5;
s4: judging whether the distance between the vehicle and the front target is smaller than a first distance threshold value, if so, closing a distant view optical path, opening a close view optical path, completely transferring the content to be displayed into the close view optical path for display, and returning to the step S2 for next round of judgment; otherwise, entering S5;
s5: starting a distant view light path and recovering display contents in the distant view light path;
s6: judging whether the current navigation state exists or not, if so, entering S7; otherwise, entering S8;
s7: judging whether the distance between the current position of the vehicle and the next intersection is smaller than a second distance threshold value, if so, closing a close-range light path, completely transferring the content to be displayed into a distant-range light path for display, and returning to S2 for next round of judgment; otherwise, entering S8;
s8: and opening a close-range light path, reasonably distributing the content to be displayed to the close-range light path and the far-range light path for display, and returning to the step S2 for the next round of judgment.
Further, the opening and closing of the far view optical path and the near view optical path are realized by controlling the angles of the reflecting mirrors of the far view optical path and the near view optical path.
Further, the opening and closing of the distant view optical path and the close view optical path are controlled as follows: the far view light path and the near view light path are respectively provided with corresponding display devices, and when the far view light path and the near view light path are opened or closed, the corresponding display devices are respectively turned on or off.
The near-far view optical path switching terminal equipment of the AR-HUD equipment comprises a processor, a memory and a computer program which is stored in the memory and can run on the processor, wherein the steps of the method of the embodiment of the invention are realized when the processor executes the computer program.
A computer readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the steps of the method according to the embodiments of the present invention.
By adopting the technical scheme, the invention can respectively and independently control the display logic of the near view optical path and the far view optical path, and can display when the display is needed and can not display when the display is not needed. On the one hand, the power consumption of the whole machine is reduced, and unnecessary electric quantity loss is avoided. The most critical is that the effect of guaranteeing visual effect and preventing interference to the sight of a driver is achieved, for example, when the road traffic jam speed is slow and the distance from the front vehicle is very close, the distant view light path is closed, only the close view light path is opened, all necessary information is transferred to the close view light path system for display, the image projected by the distant view light path is prevented from penetrating into the front vehicle for display, uncomfortable experience is brought to the driver, and the problem that the driver is misled and even the driving of the driver is influenced is avoided.
Drawings
FIG. 1 is a schematic diagram showing the operation of an AR-HUD according to the first embodiment of the present invention.
Fig. 2 is a flow chart showing switching of the long-range view optical path in this embodiment.
Fig. 3 is a flowchart showing switching of the close-up optical path in this embodiment.
Detailed Description
For further illustration of the various embodiments, the invention is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present invention.
The invention will now be further described with reference to the drawings and detailed description.
Embodiment one:
the embodiment of the invention provides a near-far view optical path switching method of AR-HUD equipment, which is characterized by firstly describing the working process of the AR-HUD in detail.
Working procedure of AR-HUD
As shown in fig. 1, the AR-HUD device receives data from a navigation module, an ADAS (advanced driving assistance system) module, and an ECU (vehicle computer) module on a vehicle through a bus, wherein:
(1) Obtaining navigation data from a navigation module, wherein the navigation data comprises a current road name, a next road junction type, a distance from the next road junction to the next road junction, a driving direction, a road congestion state and the like, whether the navigation module is in a navigation mode or not at present;
(2) Acquiring ADAS related data from an ADAS module, wherein the ADAS related data at least comprises lane line position coordinates of a current lane, whether a vehicle runs off a lane line, whether a vehicle and a distance thereof exist in front of the lane, whether a vehicle and a distance thereof exist in front of a partition lane, whether a vehicle exists in a blind area of a driver's sight, and the like;
(3) The vehicle condition data of the current vehicle is obtained from the ECU module and at least comprises the running speed of the vehicle, the gear state of the vehicle, the engine speed value, the instantaneous fuel consumption value, the average fuel consumption value, the continuous mileage of the vehicle and the like.
After the AR-HUD equipment acquires the data, extracting the data in the data according to preset processing logic, and respectively synthesizing an image of a near view light path part and an image of a far view light path part for final display.
Control of near and far vision optical paths by AR-HUD
Two control schemes are included in this embodiment:
scheme one: by controlling the lens position of the corresponding light path.
In this embodiment, a micro motor is mounted on the mirror of the near view optical path and the far view optical path in the AR-HUD device, respectively. At ordinary times, the motor does not work, the reflecting mirror is in a closed state, and the light path cannot image. When the corresponding light path system is started, the motor is controlled to rotate to a designated position, and imaging can be achieved. In other embodiments, other implementations may also be employed.
Scheme II: by controlling the display state of the display screen of the corresponding light path.
In the embodiment, a single display screen is respectively arranged for the close-range light path and the far-range light path, and when the close-range light path is required to be started, the display screen corresponding to the close-range light path is lightened; when the long-range light path is to be started, a display screen corresponding to the long-range light path is lightened. In other embodiments, other implementations may also be employed.
The short-range light path and the long-range light path are only mere light path systems, and are not specific to the displayed content. In other words, both the near view optical path and the far view optical path herein may be used to display vehicle running data, navigation guidance information, ADAS assistance information, other prompt information, and the like. Their greatest difference is only the difference in distance between the imaging regions.
3. Process for switching near-far view optical path
(1) As shown in fig. 2, the switching of the distant view optical path includes the following steps:
step one, initially setting a distant view light path and a close view light path to be in an open state, and collecting the current speed of the vehicle.
Step two, judging whether the current vehicle speed is smaller than a vehicle speed threshold Q (10 km/h in the embodiment), if so, entering a step three; otherwise, go to step six.
Step three, acquiring front target information of the vehicle, judging whether a moving target exists right in front of the vehicle according to the front target information, if so, entering step four, otherwise, entering step six.
Step four, judging whether the distance between the vehicle and the front target is smaller than a distance threshold K (7 meters in the embodiment), if so, entering step five, otherwise, entering step six.
And fifthly, closing the distant view optical path, transferring the content to be displayed to the close view optical path for display, and returning to the second step for next round of judgment.
And step six, starting a long-range light path, recovering display content in the long-range light path, and returning to the step two to carry out next round of judgment.
(2) As shown in fig. 3, the switching of the close-up light path includes the following steps:
step one, acquiring the on-off state of a distant view light path, namely, whether the distant view light path is on or off, judging whether the distant view light path is off or not, and if yes, entering a step four; otherwise, enter step two.
Step two, judging whether the navigation process is currently in progress, if so, entering a step three; otherwise, enter step four.
Step three, judging whether the distance between the current position of the vehicle and the next intersection is smaller than a distance threshold T (15 meters in the embodiment), if so, closing a close-range light path, transferring the content to be displayed to a distant-range light path for display, and returning to the step one for next round of judgment; otherwise, enter step four.
And fourthly, starting a close-range light path, recovering display content in the close-range light path, and returning to the first step for next round of judgment.
The first embodiment of the invention can respectively and independently control the display logic of the near view optical path and the far view optical path, and can display when the display is needed and can not display when the display is not needed. On the one hand, the power consumption of the whole machine is reduced, and unnecessary electric quantity loss is avoided. The most critical is that the effect of guaranteeing visual effect and preventing interference to the sight of a driver is achieved, for example, when the road traffic jam speed is slow and the distance from the front vehicle is very close, the distant view light path is closed, only the close view light path is opened, all necessary information is transferred to the close view light path system for display, the image projected by the distant view light path is prevented from penetrating into the front vehicle for display, uncomfortable experience is brought to the driver, and the problem that the driver is misled and even the driving of the driver is influenced is avoided.
Embodiment two:
the invention also provides near-far view optical path switching terminal equipment of the AR-HUD equipment, which comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the steps in the method embodiment of the first embodiment of the invention are realized when the processor executes the computer program.
Further, as an executable scheme, the near-far view optical path switching terminal device of the AR-HUD device may be a computing device such as a vehicle-mounted computer and a cloud server. The AR-HUD device near-far view optical path switching terminal device can comprise, but is not limited to, a processor and a memory. It will be appreciated by those skilled in the art that the above-mentioned construction of the near-far view optical path switching terminal device of the AR-HUD device is merely an example of the near-far view optical path switching terminal device of the AR-HUD device, and does not constitute limitation of the near-far view optical path switching terminal device of the AR-HUD device, and may include more or fewer components than the above-mentioned components, or may combine some components, or different components, for example, the near-far view optical path switching terminal device of the AR-HUD device may further include an input/output device, a network access device, a bus, and the like, which is not limited by the embodiment of the present invention.
Further, as an implementation, the processor may be a central processing unit (Central Processing Unit, CPU), other general purpose processor, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc. The general processor may be a microprocessor or the processor may also be any conventional processor, etc., and the processor is a control center of the near-far view optical path switching terminal device of the AR-HUD device, and connects various parts of the entire near-far view optical path switching terminal device of the AR-HUD device by using various interfaces and lines.
The memory may be used to store the computer program and/or the module, and the processor may implement various functions of the near-far view optical path switching terminal device of the AR-HUD device by running or executing the computer program and/or the module stored in the memory and invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for a function; the storage data area may store data created according to the use of the cellular phone, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, memory, plug-in hard disk, smart Media Card (SMC), secure Digital (SD) Card, flash Card (Flash Card), at least one disk storage device, flash memory device, or other volatile solid-state storage device.
The present invention also provides a computer readable storage medium storing a computer program which when executed by a processor implements the steps of the above-described method of an embodiment of the present invention.
The module/unit integrated with the AR-HUD device near-far optical path switching terminal device may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, the present invention may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a software distribution medium, and so forth.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. The near-far view optical path switching method of the AR-HUD equipment is characterized by comprising the following steps of:
s1: initially setting a distant view optical path and a close view optical path to be in an open state;
s2: collecting a current vehicle speed, judging whether the current vehicle speed is smaller than a vehicle speed threshold value, and if so, entering S3; otherwise, entering S5;
s3: acquiring front target information of the vehicle, judging whether a moving target exists right in front of the vehicle according to the front target information, and if so, entering S4; otherwise, entering S5;
s4: judging whether the distance between the vehicle and the front target is smaller than a first distance threshold value, if so, closing a distant view optical path, opening a close view optical path, completely transferring the content to be displayed into the close view optical path for display, and returning to the step S2 for next round of judgment; otherwise, entering S5;
s5: starting a distant view light path and recovering display contents in the distant view light path;
s6: judging whether the current navigation state exists or not, if so, entering S7; otherwise, entering S8;
s7: judging whether the distance between the current position of the vehicle and the next intersection is smaller than a second distance threshold value, if so, closing a close-range light path, completely transferring the content to be displayed into a distant-range light path for display, and returning to S2 for next round of judgment; otherwise, entering S8;
s8: and opening a close-range light path, reasonably distributing the content to be displayed to the close-range light path and the far-range light path for display, and returning to the step S2 for the next round of judgment.
2. The method according to claim 1, characterized in that: the opening and closing of the far view optical path and the near view optical path are realized by controlling the angles of the reflecting mirrors of the far view optical path and the near view optical path.
3. The method according to claim 1, characterized in that: the control of opening and closing of the far view light path and the near view light path is as follows: the far view light path and the near view light path are respectively provided with corresponding display devices, and when the far view light path and the near view light path are opened or closed, the corresponding display devices are respectively turned on or off.
4. The utility model provides a near-far view light path switching terminal equipment of AR-HUD equipment which characterized in that: comprising a processor, a memory and a computer program stored in the memory and running on the processor, which processor, when executing the computer program, carries out the steps of the method according to any one of claims 1 to 3.
5. A computer readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the method according to any one of claims 1-3.
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