CN110435539B - Image display method of head-up display and head-up display system - Google Patents
Image display method of head-up display and head-up display system Download PDFInfo
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- CN110435539B CN110435539B CN201910662323.XA CN201910662323A CN110435539B CN 110435539 B CN110435539 B CN 110435539B CN 201910662323 A CN201910662323 A CN 201910662323A CN 110435539 B CN110435539 B CN 110435539B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/001—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles integrated in the windows, e.g. Fresnel lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0179—Display position adjusting means not related to the information to be displayed
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0179—Display position adjusting means not related to the information to be displayed
- G02B2027/0183—Adaptation to parameters characterising the motion of the vehicle
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B2027/0192—Supplementary details
- G02B2027/0196—Supplementary details having transparent supporting structure for display mounting, e.g. to a window or a windshield
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Abstract
The application belongs to the technical field of screen display, and provides an image display method and a head-up display system of a head-up display, wherein the method comprises the following steps: controlling a display device arranged on a windshield to output preset image information; acquiring monitoring data obtained by tracking and shooting the head or eyes of a driver by a tracking device; in the floating mode, the focusing state and the sight line moving track of the eyes of the driver on the display device are calculated according to the monitoring data; and if the focusing state is the far point focusing, controlling the image displayed in the moving track range to move so as to enable the image to be far away from the position of the moving track. According to the embodiment of the application, the image displayed in the range of the driver sight line moving track is controlled to be far away from the position of the sight line moving track, so that the problem that the driver sight line is easily shielded by the image displayed by the HUD is solved.
Description
Technical Field
The invention relates to the technical field of screen display, in particular to an image display method and a head-up display system of a head-up display.
Background
Head-up displays (HUDs) are a driving aid that can provide information or warnings to the driver through the windshield during driving without requiring the driver to move the field of view away from the road in front of the vehicle. The display image may be given by a display panel mounted directly on the windscreen or by an image projector, the emitted image light given by the projector being reflected by the windscreen.
However, the image displayed by the display device may block the view of the driver through the windshield, and especially when the driver attempts to view the external surroundings through the windshield, the line of sight is extremely easily blocked by the image displayed by the display device of the HUD, which is likely to cause a safety hazard.
Disclosure of Invention
In view of this, embodiments of the present invention provide an image display method and a head-up display system for a head-up display, so as to solve a problem that a line of sight of a driver is easily blocked by an image displayed by the head-up display.
A first aspect of an embodiment of the present invention provides an image display method of a head-up display, including:
controlling a display device arranged on a windshield to output preset image information;
acquiring monitoring data obtained by tracking and shooting the head or eyes of a driver by a tracking device;
in the floating mode, the focusing state and the sight line moving track of the eyes of the driver on the display device are calculated according to the monitoring data;
and if the focusing state is the far point focusing, controlling the image displayed in the moving track range to move so as to enable the image to be far away from the position of the moving track.
In one implementation example, the image information includes: security information images, status information images and information images arranged from high to low according to importance levels;
if the focusing state is the far point focusing, controlling the image displayed in the sight line movement track range to move so as to enable the image to be far away from the position of the sight line movement track, comprising:
and if the image positioned in the moving track range is a safety information image and the focusing state is a far point focusing state, controlling the image displayed in the sight line moving track range to move along with the sight line so as to enable the image to be displayed in the driver view range and positioned beside the center range of the sight line.
In an implementation example, if the focusing state is a far-point focusing state, controlling the image displayed in the range of the movement trajectory of the line of sight to move so that the image is away from the position of the movement trajectory of the line of sight, further includes:
if the image is a state information image or an information image and the focusing state is a far point focusing, re-determining the display position of the image displayed in the sight line moving track range so as to enable the image to be far away from the position of the sight line moving track;
and controlling the image to be displayed on the display position.
In one embodiment, in the floating mode, after calculating the focusing state and the sight line movement track of the eyes of the driver on the display device according to the monitoring data, the method further comprises the following steps:
and if the focusing state is near point focusing, keeping the current state of the image displayed in the sight line moving track range.
In one example implementation, the method further comprises:
acquiring steering data detected by a steering sensor arranged on a vehicle body;
and controlling the image in the preset range of the steering data corresponding direction in the display device to disappear so as to clear the image in the preset range.
In one example, the display device includes a first display area, a second display area, and a third display area distributed on the windshield; the first display area is arranged in an area, right opposite to a driver, of the windshield, and the second display area and the third display area are respectively arranged on two sides of the first display area; wherein the content of the first and second substances,
the first display region, the second display region, and the third display region each include at least three sub-display regions.
In one embodiment, when in the floating mode, calculating the focusing state and the sight line movement track of the eyes of the driver on the display device according to the monitoring data further comprises:
and when in the floating mode, calculating the focusing state and the sight line moving track of the eyes of the driver on the middle and/or lower display area of the display device according to the monitoring data.
In one example implementation, the method further comprises:
in a fixed mode, calculating the focusing state and sight line stopping position of the eyes of the driver on the display device according to the monitoring data;
and if the focusing state is the far point focusing, adjusting the transparency of the image displayed at the sight line stop position so that the sight line of the driver can pass through the image.
In one embodiment, after calculating the focusing state and the sight-line rest position of the eyes of the driver on the display device according to the monitoring data in the fixed mode, the method further comprises the following steps:
and if the focusing state is near point focusing, keeping the current state of the image displayed at the sight line stopping position or restoring the transparency of the image displayed at the sight line stopping position to the original value.
A second aspect of an embodiment of the present invention provides a head-up display system including: the device comprises a control device, a display device and a tracking device;
the display device is arranged on the windshield and comprises a transparent display screen and a 3D image generation element; the 3D image generation element covers the transparent display screen.
The control device is connected to the tracking device and the display device, respectively, for executing the image display method of the head-up display in the first aspect.
A third aspect of an embodiment of the present invention provides a control apparatus, including: a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the image display method of the head-up display in the first aspect when executing the computer program.
According to the image display method and the head-up display system of the head-up display, the preset image information is output by controlling the display device arranged on the windshield; acquiring monitoring data obtained by tracking and shooting the head or eyes of a driver by a tracking device; in the floating mode, the focusing state and the sight line moving track of the eyes of the driver on the display device are calculated according to the monitoring data; and if the focusing state is the far point focusing, controlling the image displayed in the moving track range to move so as to enable the image to be far away from the position of the moving track. In order to prevent the sight line of the driver from obstructing the sight line of the driver by the image at the position of the sight line when the sight line of the driver is observed through the display device, the control device controls the image displayed in the range of the sight line moving track on the display device to move according to the calculated sight line moving track to form an empty area, and no image (especially non-emergency image) is positioned at the center of the sight line and nearby the sight line on the windshield, so that the image which obstructs the sight line of the driver at present is far away from the position of the sight line moving track.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a flowchart illustrating an image displaying method of a head-up display according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a first scenario of controlling image movement on a display device in a floating mode according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a second scenario for controlling image movement on a display device in a floating mode according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating division of regions of a display device according to a second embodiment of the present invention;
FIG. 5 is a flowchart illustrating an image displaying method of a head-up display according to a second embodiment of the present invention;
FIG. 6 is a flowchart illustrating an image displaying method of a head-up display according to a third embodiment of the present invention;
fig. 7 is a schematic diagram of a first scene of an embodiment of adjusting transparency of an image on a display device in a fixed mode according to a third embodiment of the present invention;
fig. 8 is a schematic diagram of a second scene of an embodiment of adjusting transparency of an image on a display device in a fixed mode according to a third embodiment of the present invention;
fig. 9 is a schematic diagram of a first scene of another embodiment of adjusting transparency of an image on a display device in a fixed mode according to a third embodiment of the present invention;
fig. 10 is a schematic diagram of a second scene of another embodiment of adjusting transparency of an image on a display device in a fixed mode according to a third embodiment of the present invention;
FIG. 11 is a diagram illustrating a scenario of maintaining a current state of an image on a display device in a fixed mode according to a third embodiment of the present invention;
FIG. 12 is a flowchart illustrating an image displaying method of a head-up display according to a fourth embodiment of the present invention;
fig. 13 is a schematic structural diagram of a control device according to a fifth embodiment of the present invention;
fig. 14 is a schematic structural diagram of a head-up display system according to a sixth embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "comprises" and "comprising," and any variations thereof, in the description and claims of this invention and the above-described drawings are intended to cover non-exclusive inclusions. For example, a process, method, or system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," and "third," etc. are used to distinguish between different objects and are not used to describe a particular order.
Example one
Fig. 1 is a schematic flow chart of an image display method of a head-up display according to an embodiment of the present invention. The embodiment of the present invention is applicable to an application scenario in which an HUD displays image information for a driver, and the method may be executed by a control device, where the control device may be an intelligent terminal, a tablet, or a PC, and the like, and is described with a control device in a head-up display system as an execution subject in the embodiment of the present invention, the method specifically includes the following steps:
s110, controlling a display device arranged on the windshield to output preset image information;
a head-up display system (HUD) comprises a display device arranged on the windscreen of the vehicle, optionally over a partial region of the windscreen, avoiding obstructing the driver from viewing the external environment through the windscreen. The control device is electrically connected with the display device and outputs image signals to the display device to control the display device to output preset image information.
In one embodiment, the displaying means outputting the preset image information may include: the security information image, the status information image and the information image are arranged from high to low in the order of importance. Optionally, the safety information image includes images such as a collision warning, an overspeed warning, a vehicle failure warning, a navigation warning (driving guidance in an emergency), and parking guidance; the state information image includes: images such as vehicle speed (displayed in the form of an instrument), oil guide quantity reminding and the like; the information image includes: weather, temperature, time, upcoming schedules, etc. Preferably, the image information output by the display device may be a simple image having a shape and color that are easily distinguishable.
S120, acquiring monitoring data obtained by tracking and shooting the head or eye movement of the driver by the tracking device;
the head-up display system (HUD) further includes a tracking device for tracking and photographing the head or eyes of the driver in real time. Specifically, the tracking device is arranged in the carriage and at least comprises a shooting lens, and the head or eye movement of a driver in the process of watching a windshield is shot in real time through the shooting lens to obtain shot image data, namely monitoring data. The control device is in communication connection with the tracking device and receives monitoring data obtained by the tracking device tracking the movement of the head or eyes of the driver. Optionally, the tracking device may further comprise an infrared light source, which may be arranged on the windscreen such that infrared light emitted by the infrared light source impinges on the eyes of the driver. The photographing lens in the tracking device also has an infrared photographing function, and can photograph image data of infrared light reflected by pupils of the driver, so that the control device can determine whether to watch distant objects through the windshield or to watch image information displayed on the display device when the sight line of the driver falls on an image displayed by the display device according to the infrared reflection points of the pupils of the driver in the image data, namely, judge the eye focusing state of the driver.
S130, during the floating mode, calculating the focusing state and the sight line moving track of the eyes of the driver on the display device according to the monitoring data;
an image displayed on a display device by a head-up display system (HUD) may have two display modes, a floating mode and a fixed mode; specifically, when in the floating mode, the control device may control the image displayed on the display device to float, and may also control the displayed image to "float away" from the center of the line of sight of the driver on the display device, thereby enabling the image displayed by the display device to be clear of the driver's view. Specifically, in the floating mode, the control device calculates the eye focusing state and the sight line moving track of the driver when the sight line falls on the display device according to the monitoring data shot by the tracking device. The sight line moving track comprises position information of the sight line moving track on a display device, the sight line moving track is composed of positions where sight line midpoints of drivers on the display device move, and a certain area with the sight line midpoints as the center is preset as a sight line moving track range. The eye focusing state of the driver can comprise two states, namely near point focusing and far point focusing; the focusing state of the eyes of the driver can be preset to be a far point focusing state when the sight of the driver looks at distant objects through the windshield or the display device; the eye focus state of the driver is near-point focus when the driver's sight line is on the display device to view the displayed image information.
And S140, if the focusing state is the far-point focusing, controlling the image displayed in the moving track range to move so as to enable the image to be far away from the position of the moving track.
When the control device judges that the current eye focusing state of the driver is far-point focusing through the monitoring data sent by the calculation tracking device, in order to prevent the sight line of the driver from being obstructed by the image at the position of the sight line when the sight line of the driver is observed through the display device, the control device controls the image displayed in the sight line moving track range on the display device to move according to the sight line moving track obtained through calculation, so that the image obstructing the sight line of the driver at present is far away from the position of the sight line moving track. The control device controls the moving mode of the image to be floating away, disappearing or redetermining the display position and the like. Since the image information outputted from the display device of the HUD may include the safety information image, the status information image and the information image arranged from high to low in order of importance, the control device has different movement control modes for the images of different importance levels in order to prevent the driver from missing the emergency information when the images of different importance levels are displayed within the range of the driver's sight line movement locus.
In one implementation example, when the control device determines that the current eye focusing state of the driver is the far-point focusing state, if the image located in the movement track range is the safety information image, the control device controls the image displayed in the sight line movement track range to move along with the sight line, so that the image is displayed in the driver view range and located beside the center range of the sight line.
Specifically, when the safety information image with high importance level is positioned in the sight line moving track range of the driver, the image can not float away relative to the sight line center of the driver, the control device determines the next display position of the image again according to the movement track obtained through calculation, the determined next display position can be any one position of the region from the outside of the center range of the sight line of the current driver to the inside of the sight line range of the driver, and the image is controlled to be displayed at the next display position, so that the image displayed in the sight line moving track range is controlled to move along with the sight line of the driver, the image in the sight line center range of the driver is cleared to avoid the image from obstructing the sight line, and the image with important/emergency information can follow the sight line of the driver to timely attract attention of the driver and not affect the driving safety.
In another implementation example, when the control device determines that the current eye focusing state of the driver is the far-point focusing state, if the image is a state information image or an information image, the control device re-determines the display position of the image displayed in the sight-line movement track range so as to enable the image to be far away from the position of the sight-line movement track; and controlling the image to be displayed on the display position.
Specifically, as shown in fig. 2, when the status information image or the informational information image having a lower importance level is located within the range of the driver's sight-line movement locus, the image is not related to the key/emergency safety issue, and such information display does not need to be brought to the attention of the driver. Some images containing non-urgent information may already be displayed on the display device based on user presets or input or other reasons. When the driver looks out through the windscreen, the control device may control these non-emergency images to "float" away from the driver's view centre position on the display device to give the driver a view, which results in an empty area without any images (especially non-emergency images) being located in and near the centre of the view on the windscreen, as shown in fig. 3. The control device determines the next display position of the image again according to the movement track obtained by calculation, the determined next display position can be any position of an area between the outside of the range of the sight line movement track of the driver and the field of vision of the driver, and the image is controlled to be displayed at the next display position, so that the image displayed in the range of the sight line movement track is controlled to be far away from the position of the sight line movement track. Alternatively, the control means may also control the image to be moved to the determined next display position at a preset speed, i.e. the image is floated away.
Since the status information image and the information image have different importance levels, when the information image with the lowest importance level is located within the range of the sight line movement locus of the driver, the control device determines the next display position of the image again, in controlling the image to move to the next display position, if there is state information image with higher importance level than the image on the moving path of the image, the control device updates the next display position according to the position information of the image with higher importance level on the moving path of the image and controls the image to be displayed on the updated next display position, the image displayed in the sight line movement track range of the driver is far away from the image with higher importance level on the movement path, and the image with lower importance level is displayed in the way of giving way to the image with higher importance level.
In another example, the control means may further redetermine a next display position of the image displayed in the sight-line movement locus as a home position of the image so that the image temporarily disappears at a position where the sight-line movement locus of the driver is located; and when the controller judges that the image is not in the range of the sight line movement track of the driver, the controller controls the image to be displayed at the determined next display position. The image displayed in the sight line moving track range of the driver is displayed in a transparent state after being temporarily disappeared, and the sight line is prevented from being blocked by the image.
In one implementation example, the control means maintains the current state of the image displayed within the sight-line movement locus when determining that the current eye focus state of the driver is the near-point focus. Specifically, when the eye focus state of the driver is the near point focus, the driver is viewing the image information displayed on the display device, and therefore the control device controls the image displayed in the range of the driver's sight line movement locus to keep the current state, that is, the display position and transparency of the image, unchanged, facilitating the driver to view the image information on the display device.
According to the HUD image display method provided by the embodiment of the invention, the preset image information is output by controlling the display device arranged on the windshield; acquiring monitoring data obtained by tracking and shooting the head or eyes of a driver by a tracking device; in the floating mode, the focusing state and the sight line moving track of the eyes of the driver on the display device are calculated according to the monitoring data; and if the focusing state is the far point focusing, controlling the image displayed in the moving track range to move so as to enable the image to be far away from the position of the moving track. In order to prevent the sight line of the driver from obstructing the sight line of the driver by the image at the position of the sight line when the sight line of the driver is observed through the display device, the control device controls the image displayed in the range of the sight line moving track on the display device to move according to the calculated sight line moving track to form an empty area, and no image (especially non-emergency image) is positioned at the center of the sight line and nearby the sight line on the windshield, so that the image which obstructs the sight line of the driver at present is far away from the position of the sight line moving track.
Example two
Fig. 4 is a schematic diagram illustrating region division of a display device according to an image display method of a head-up display according to a second embodiment of the present invention. On the basis of the first embodiment, the embodiment also provides a display method of the image after the display area of the display device is divided, so that the use experience of the driver is improved.
The display device in the HUD comprises a first display area, a second display area and a third display area which are distributed on the windshield; the first display area is arranged in an area, right opposite to a driver, of the windshield, and the second display area and the third display area are respectively arranged on two sides of the first display area; wherein the content of the first and second substances,
the first display region, the second display region, and the third display region each include at least three sub-display regions, which may be an upper display region, a middle display region, and a lower display region, respectively.
Specifically, to improve the viewing experience of the driver on the image displayed by the display device, the display device may be divided into three display areas according to the distribution position of the display device on the windshield. The central area of the display device facing the driver can be set as a first display area, and the central area is the important visual field range of the driver, so that the display device is required to avoid displaying excessive images to interfere the visual field of the driver, and can be used for displaying a small amount of information with high importance level such as emergency/safety and the like. And the display regions of the display device located at both sides of the first display region may be set as the second and third display regions, respectively. Alternatively, the display area located at the left side of the driver may be set as the second display area and the display area located at the right side of the driver may be set as the third display area with reference to the front position direction of the driver. The second and third display areas may be used to display information of a lower importance level such as vehicle status or information.
The three display areas in the display device respectively comprise three sub-display areas which form nine sub-areas; the three display areas are an upper display area, a middle display area, and a lower display area, respectively. Wherein the first display region in the display device includes a first upper display region 31, a first middle display region 32, and a first lower display region 33; the second display region includes a second upper display region 34, a second middle display region 35, and a second lower display region 36; the third display area includes a third upper display area 37, a third middle display area 38, and a third lower display area 39. The upper and lower sub-display areas of the three display areas in the display device may be used to display information of a low importance level such as a vehicle state or information.
The first intermediate sub-area 32 in the display device is a position through which the driver mainly views the external situation and allows the driver to see the line of sight. The lower sub-area occupies a much smaller portion than the central sub-area and is typically arranged so that, from the driver's perspective, the lower sub-area covers the driver's view of the hood, but it should be noted that some vehicles are designed with a higher bottom position of the windscreen and do not necessarily allow space for the lower sub-area. The upper sub-area is an area which is not usually watched by the driver, the road condition cannot be watched through the area, and the area can be used for displaying information with different display grades. The information density of the intermediate sub-area, in particular the first intermediate sub-area, can be set to a minimum, and only the safety information image that needs to be displayed in this area to be brought to the driver's attention can be retained. While the upper sub-area allows for a higher information density, allowing more information to be displayed simultaneously. If the information density is to be ranked in order (from low to high), it may be: first region > second/third region; upper sub-region > lower sub-region > middle sub-region. In conjunction with vertical and horizontal partitioning, and usage habits and safety considerations, the density ordering is optionally: first middle sub-region > second/second middle sub-region > first/second/third lower sub-region > first/second/third upper sub-region.
According to the division of the display area on the display device, the display mode of the specific display area can be limited to two display modes, namely a floating mode and/or a fixed mode. Optionally, the upper display areas 31, 34 and 37 of the first, second and third display areas in the display device may be fixed to display images in a fixed mode; the middle and lower display regions 32, 33, 35, 36, 38, and 39 of the first, second, and third display regions may be manually selected to perform image display in a floating mode or a fixed mode. As shown in fig. 5, based on the display area definition of the display mode, when the middle and lower display areas of the first, second and third display areas are preset to display images in the floating mode, the specific flow steps of the image display method of the HUD include:
s210, controlling a display device arranged on the windshield to output preset image information; the image information includes: security information images, status information images and information images arranged from high to low according to importance levels;
s220, acquiring monitoring data obtained by tracking and shooting the head or eyes of the driver by the tracking device;
s230, during the floating mode, calculating the focusing state and the sight line moving track of the eyes of the driver on the middle and/or lower display area of the display device according to the monitoring data;
since the image display method of the middle and lower display areas of the first, second and third display areas of the display device that can be set on the windshield in advance is the floating mode, the control device controls the image of the display area that adopts the floating mode in such a manner that the eye focusing state and the line of sight moving trajectory when the line of sight of the driver falls on the middle and/or lower display area of the display device are calculated based on the monitoring data captured by the tracking device. The sight line moving track comprises position information of the sight line moving track on a display device, the sight line moving track is composed of positions where sight line midpoints of drivers on the display device move, and a certain area with the sight line midpoints as the center is preset as a sight line moving track range. The eye focusing state of the driver can comprise two states, namely near point focusing and far point focusing; the focusing state of the eyes of the driver can be preset to be a far point focusing state when the sight of the driver looks at distant objects through the windshield or the display device; the eye focus state of the driver is near-point focus when the driver's sight line is on the display device to view the displayed image information.
S240, if the focusing state is the far point focusing and the image is a state information image or an information image, determining the next display position of the image displayed in the sight line moving track range as an upper display area of a display device so as to enable the image to be far away from the position of the sight line moving track;
when the control device judges that the current eye focusing state of the driver is far-point focusing through the monitoring data sent by the calculation tracking device, in order to prevent the sight line of the driver from being obstructed by the image at the position of the sight line when the sight line of the driver is observed through the display device, the control device controls the image displayed in the sight line moving track range on the display device to move according to the sight line moving track obtained through calculation, so that the image obstructing the sight line of the driver at present is far away from the position of the sight line moving track.
Specifically, when the state information image or the informational information image of lower importance level is located within the range of the driver's sight-line movement locus, the image is irrelevant to the critical/emergency safety matters, and such information display does not need to be brought to the attention of the driver. Some images containing non-urgent information may already be displayed on the display device based on user presets or input or other reasons. When the driver looks out through the windscreen, the control device can control the non-emergency images to "float" relative to the driver's centre of sight position on the display device to the upper display area where the images are displayed in the fixed mode to give way to the driver's field of vision, which results in an empty area without any images (especially non-emergency images) being located at and near the centre of sight on the middle and/or lower display area where the images are displayed in the floating mode. The control device re-determines the next display position of the image according to the movement track obtained by calculation, and the determined next display position can be any position of the upper sub-display areas of the first display area, the second display area and the third display area of the display device.
And S250, controlling the image to be displayed at the next display position.
The control device controls the image displayed in the range of the sight line movement track of the driver to be displayed at the next display position so as to control the image displayed in the range of the sight line movement track to be away from the position of the sight line movement track and move to the display area for displaying the image in the fixed mode. Alternatively, the control means may also control the image to be moved to the determined next display position at a preset speed, i.e. the image is floated away.
EXAMPLE III
Fig. 6 is a schematic flow chart of an image display method of a head-up display according to a third embodiment of the present invention. On the basis of the first or second embodiment, the embodiment further provides an image display method of the HUD when the image display is performed in the fixed mode, so that the fixed display of the image is realized.
In the fixed mode, the image will be displayed on a fixed display area of a display device provided on the windscreen without being repositioned with respect to the driver's line of sight. The fixed mode may be used for specific image presentations, e.g. for certain types of signal images/characters. The signal image may be a safety information image such as a vehicle speed, a navigation guide, a warning, a status information image, an information image, and the like. Preferably, most of the signal images will be displayed on the first display area and the upper and lower sub-areas of the first display area. This image display arrangement reduces obstruction to the driver when looking forward through the windshield.
The image display method of the HUD during image display in the fixed mode comprises the following specific steps:
s310, controlling a display device arranged on the windshield to output preset image information;
a head-up display system (HUD) comprises a display device arranged on the windscreen of the vehicle, optionally over a partial region of the windscreen, avoiding obstructing the driver from viewing the external environment through the windscreen. The control device is electrically connected with the display device and outputs image signals to the display device to control the display device to output preset image information.
In one embodiment, the displaying means outputting the preset image information may include: the security information image, the status information image and the information image are arranged from high to low in the order of importance. Optionally, the safety information image includes images such as a collision warning, an overspeed warning, a vehicle failure warning, a navigation warning (driving guidance in an emergency), and parking guidance; the state information image includes: images such as vehicle speed (displayed in the form of an instrument), oil guide quantity reminding and the like; the information image includes: weather, temperature, time, upcoming schedules, etc. Preferably, the image information output by the display device may be a simple image having a shape and color that are easily distinguishable.
S320, acquiring monitoring data obtained by tracking and shooting the head or eyes of the driver by the tracking device;
s330, in a fixed mode, calculating the focusing state and sight line stopping position of the eyes of the driver on the display device according to the monitoring data;
in the fixed mode, the control device calculates the eye focusing state and the sight line stop position when the sight line of the driver falls on the display device according to the monitoring data shot by the tracking device. Wherein the sight line stop position comprises the position information of the current sight line on the display device. The eye focusing state of the driver can comprise two states, namely near point focusing and far point focusing; the focusing state of the eyes of the driver can be preset to be a far point focusing state when the sight of the driver looks at distant objects through the windshield or the display device; the eye focus state of the driver is near-point focus when the driver's sight line is on the display device to view the displayed image information.
S340, if the focusing state is the far point focusing, adjusting the transparency of the image displayed at the sight line stopping position so that the sight line of the driver can penetrate through the image;
when the control device judges that the current eye focusing state of the driver is far-point focusing through the monitoring data sent by the calculation tracking device, in order to prevent the sight line of the driver from being obstructed by the image at the position of the sight line when the sight line of the driver is observed through the display device, the control device adjusts the transparency of the image displayed at the sight line staying position on the display device according to the sight line staying position obtained through calculation, so that the sight line of the driver can penetrate through the image obstructing the sight line of the driver.
The image information output from the display device of the HUD may include a security information image, a status information image, and an information image arranged from high to low in order of importance. In one embodiment, when the control device determines that the current eye focus state of the driver is the far-point focus, as shown in fig. 7, the sight-line stop position is a first intermediate display area, and the image displayed at the sight-line stop position is a safety information image. If the image displayed at the sight-line stop position is the safety information image, the control device adjusts the transparency of the image displayed at the current sight-line stop position of the driver. Alternatively, the control means may adjust the transparency of the image in such a way that the image flashes. The control device may adjust the transparency of the image by adjusting the transparency of the image from the original transparency to the maximum transparency, and adjusting the transparency of the image back to the original value after a preset time, and repeating this process until the control device restores the original transparency of the image when the control device determines that the image is not at the driver's sight-line stop position, as shown in fig. 8. The method and the device can control the image displayed at the sight line stopping position to flash at preset time intervals, so that the image displayed at the sight line stopping position is controlled to disappear for a period of time to avoid the image from obstructing the sight line, and the image with important/emergency information can be redisplayed at the original position to attract the attention of a driver and not influence the driving safety.
In another embodiment, when the status information image or the informational information image of lower importance level is located at the driver's sight-line stop position, the image is not related to the critical/emergency safety issue, and such information display does not need to be brought to the driver's attention. Some images containing non-urgent information may already be displayed on the display device based on user presets or input or other reasons. When the driver looks out through the windscreen, the control device can adjust the transparency of these non-emergency images to achieve disappearance of the images, which results in an empty area without any images (especially non-emergency images) being located in and near the centre of the line of sight on the windscreen.
When the control device determines that the current eye focusing state of the driver is the far-point focusing, as shown in fig. 9, the sight-line stopping position is the third intermediate display area, and the image displayed at the sight-line stopping position is the state information image. If the image displayed at the sight-line stop position is a state information image or an information image, the control device adjusts the transparency of the image displayed at the driver's current sight-line stop position. Alternatively, the control means may adjust the transparency of the image in such a way that the image flashes or disappears. When the control means adjusts the transparency of the image in such a manner that the image disappears, the control means adjusts the transparency of the image in such a manner that the image is adjusted from the original transparency to the maximum transparency until the control means restores the original transparency of the image when the control means judges that the image is not at the driver's sight-line stop position, as shown in fig. 10.
And S350, if the focusing state is near point focusing, keeping the current state of the image displayed at the sight line stopping position or restoring the transparency of the image displayed at the sight line stopping position to an original value.
When the control device judges that the current eye focusing state of the driver is near point focusing, the driver watches the image information displayed on the display device, so that the control device controls the image displayed at the sight line stop position of the driver to keep the current state, namely the display position and the transparency of the image, unchanged, as shown in fig. 11, the sight line stop position is a first upper display area, and the image displayed at the sight line stop position is an information image. Optionally, if the eye focusing state of the driver is changed from the original far-point focusing state to the near-point focusing state and the sight line staying position of the driver is not changed, the control device may further restore the transparency of the image displayed at the sight line staying position of the driver to an original value, so that the driver can view the image information on the display device conveniently.
Example four
Fig. 12 is a schematic flowchart of an image display method of a head-up display according to a fourth embodiment of the present invention. On the basis of the above embodiment, the present embodiment also provides an image display method of the HUD when the driver controls the vehicle to turn, thereby realizing timely provision of a corresponding visual field space to the driver. The method comprises the following specific steps:
s410, controlling a display device arranged on the windshield to output preset image information;
s420, acquiring monitoring data obtained by tracking and shooting the head or eyes of the driver by the tracking device;
s430, in the floating mode, calculating the focusing state and the sight line moving track of the eyes of the driver on the display device according to the monitoring data;
s440, if the focusing state is the far-point focusing, controlling the image displayed in the moving track range to move so as to enable the image to be far away from the position of the moving track;
s450, acquiring steering data detected by a steering sensor arranged on a vehicle body;
the control device in the head-up display system (HUD) is also connected with a steering sensor provided on the vehicle body to obtain steering data detected by the steering sensor, thereby learning the steering intended by the driver to control the turning of the vehicle. Optionally, the control device may be further connected to a management system of the vehicle to obtain a steering signal of the vehicle, which includes the target steering.
And S460, controlling the image in the preset range of the steering data corresponding direction in the display device to disappear so as to eliminate the image in the preset range.
When a driver needs to control the vehicle to turn, the driver needs to observe the vehicle conditions in the front and the rear of the vehicle, the road conditions in the target steering direction and the like through a large-area unobstructed view, the controller can acquire the steering data of the vehicle to know the steering of the vehicle, so that the image corresponding to the steering direction on the display device is controlled to temporarily disappear or be repositioned to other display areas except the steering corresponding area on the display device, the image displayed in the target steering corresponding direction on the windshield is eliminated, and a sufficient space is provided for the driver to observe the external environment.
Specifically, after the controller obtains the steering data, the controller obtains the steering data through analysis, and controls the disappearance of the image in the preset range of the corresponding direction of the steering data in the display device after the vehicle is steered, so as to clear the image of the preset area corresponding to the steering on the display device. If the direction corresponding to the steering data in the display device is left, the preset range can be a second display area of the display device; if the direction corresponding to the steering data in the display device is right, the preset range may be a third display area of the display device.
In one embodiment, the control device re-determines a next display position of the image in the preset range of the direction corresponding to the steering data on the display device, where the determined next display position may be any position in a region between outside the preset range of the direction corresponding to the steering data and within the driver's field of view, and controls the image to be displayed at the next display position, so as to clear the image in the preset range of the direction corresponding to the steering data on the display device. Alternatively, the control means may also control the image to be moved to the determined next display position at a preset speed, i.e. the image is floated away.
In another example, the control means may further redetermine a next display position of an image within a preset range of a direction corresponding to the turn data in the display means as a home position of the image, so that the image temporarily disappears within the preset range of the direction corresponding to the turn data in the display means; and when the controller judges that the vehicle has finished steering according to the steering data or the steering signal, the controller controls the image to be displayed at the determined next display position. The image displayed in the preset range of the corresponding direction of the steering data on the display device is temporarily disappeared to be displayed in a transparent state, and the visual field obstruction caused by the image when a driver controls the vehicle to steer is avoided.
EXAMPLE five
Fig. 13 is a schematic structural diagram of a control device according to a fifth embodiment of the present invention. The control device includes: a processor 1, a memory 2 and a computer program 3, such as a program for the image display method of a HUD, stored in said memory 2 and executable on said processor 1. The processor 1 implements the steps in the embodiment of the image display method of the HUD described above, such as the steps S110 to S140 shown in fig. 1, when executing the computer program 3.
Illustratively, the computer program 3 may be divided into one or more modules, which are stored in the memory 2 and executed by the processor 1 to complete the present application. The one or more modules may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 3 in the control apparatus. For example, the computer program 3 may be divided into a first control module, a monitoring data acquisition module, a calculation module and a second control module, and the specific functions of each module are as follows:
the first control module is used for controlling a display device arranged on the windshield to output preset image information;
the monitoring data acquisition module is used for acquiring monitoring data obtained by tracking and shooting the head or eyes of the driver by the tracking device;
the calculation module is used for calculating the focusing state and the sight line moving track of the eyes of the driver on the display device according to the monitoring data in the floating mode;
and the second control module is used for controlling the image displayed in the moving track range to move if the focusing state is the far point focusing so as to enable the image to be far away from the position of the moving track.
The control device can be a desktop computer, a notebook computer, a palm computer, a cloud server and other computing equipment. The control means may comprise, but are not limited to, a processor 1, a memory 2 and a computer program 3 stored in the memory 2. It will be understood by those skilled in the art that fig. 10 is merely an example of a control device, and does not constitute a limitation of the control device, and may include more or less components than those shown, or combine some components, or different components, for example, the control device may also include input and output devices, network access devices, buses, etc.
The Processor 1 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 2 may be an internal storage unit of the control device, such as a hard disk or a memory of the control device. The memory 2 may also be an external storage device, such as a plug-in hard disk provided on the control device, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), or the like. Further, the memory 2 may also include both an internal storage unit of the control apparatus and an external storage device. The memory 2 is used to store the computer program and other programs and data required for the image display method of the HUD. The memory 2 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
EXAMPLE six
Fig. 14 is a schematic structural diagram of a head-up display system according to a sixth embodiment of the present invention. The head-up display system includes: a control device 101, a display device 102, and a tracking device 103; wherein the content of the first and second substances,
the display device 102 comprises a transparent display screen arranged on a windshield and a 3D image generation element; the 3D image generation element covers the transparent display screen.
The control device 101 is connected to the tracking device 103 and the display device 102, respectively, and is configured to execute the steps of the image display method of the head-up display according to any one of the first to fourth embodiments.
According to the head-up display system provided by the embodiment of the invention, the preset image information is output by controlling the display device arranged on the windshield; acquiring monitoring data obtained by tracking and shooting the head or eyes of a driver by a tracking device; in the floating mode, the focusing state and the sight line moving track of the eyes of the driver on the display device are calculated according to the monitoring data; and if the focusing state is the far point focusing, controlling the image displayed in the moving track range to move so as to enable the image to be far away from the position of the moving track. In order to prevent the sight line of the driver from obstructing the sight line of the driver by the image at the position of the sight line when the sight line of the driver is observed through the display device, the control device controls the image displayed in the range of the sight line moving track on the display device to move according to the calculated sight line moving track to form an empty area, and no image (especially non-emergency image) is positioned at the center of the sight line and nearby the sight line on the windshield, so that the image which obstructs the sight line of the driver at present is far away from the position of the sight line moving track.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. An image display method of a head-up display, comprising:
controlling a display device arranged on a windshield to output preset image information;
acquiring monitoring data obtained by tracking and shooting the head or eyes of a driver by a tracking device;
in the floating mode, the focusing state and the sight line moving track of the eyes of the driver on the display device are calculated according to the monitoring data; the sight line moving track is composed of positions moved by the sight line middle points of the drivers falling on the display device;
and if the focusing state is the far point focusing, controlling the image displayed in the moving track range to move so as to enable the image to be far away from the position of the moving track.
2. The image display method of a head-up display as claimed in claim 1, wherein the image information includes: security information images, status information images and information images arranged from high to low according to importance levels;
if the focusing state is the far point focusing, controlling the image displayed in the sight line movement track range to move so as to enable the image to be far away from the position of the sight line movement track, comprising:
and if the image positioned in the moving track range is a safety information image and the focusing state is a far point focusing state, controlling the image displayed in the sight line moving track range to move along with the sight line so as to enable the image to be displayed in the driver view range and positioned beside the center range of the sight line.
3. The image displaying method of a head-up display as claimed in claim 2, wherein if the focusing state is a far-point focusing, controlling the movement of the image displayed within the sight-line movement locus so as to move the image away from the position of the sight-line movement locus, further comprises:
if the image is a state information image or an information image and the focusing state is a far point focusing, re-determining the display position of the image displayed in the sight line moving track range so as to enable the image to be far away from the position of the sight line moving track;
and controlling the image to be displayed on the display position.
4. The image display method of a head-up display according to claim 3, further comprising, after calculating a focusing state of the eyes of the driver on the display device and a sight-line moving locus from the monitoring data in the floating mode:
and if the focusing state is near point focusing, keeping the current state of the image displayed in the sight line moving track range.
5. The image display method of a head-up display as claimed in claim 4, further comprising:
acquiring steering data detected by a steering sensor arranged on a vehicle body;
and controlling the image in the preset range of the steering data corresponding direction in the display device to disappear so as to clear the image in the preset range.
6. The image display method of a heads-up display as claimed in any of claims 1-5, characterized in that the display device includes a first display area, a second display area and a third display area distributed on the windshield; the first display area is arranged in an area, right opposite to a driver, of the windshield, and the second display area and the third display area are respectively arranged on two sides of the first display area; wherein the content of the first and second substances,
the first display region, the second display region, and the third display region each include at least three sub-display regions.
7. The image display method of a head-up display according to claim 6, wherein the calculating of the focusing state and the sight-line movement locus of the eyes of the driver on the display device based on the monitoring data in the floating mode further comprises:
and when in the floating mode, calculating the focusing state and the sight line moving track of the eyes of the driver on the middle and/or lower display area of the display device according to the monitoring data.
8. The image display method of a head-up display as claimed in claim 7, further comprising:
in a fixed mode, calculating the focusing state and sight line stopping position of the eyes of the driver on the display device according to the monitoring data;
and if the focusing state is the far point focusing, adjusting the transparency of the image displayed at the sight line stop position so that the sight line of the driver can pass through the image.
9. The image display method of a head-up display according to claim 8, further comprising, after calculating a focus state and a sight-line stop position of the eyes of the driver on the display device based on the monitoring data in the fixed mode:
and if the focusing state is near point focusing, keeping the current state of the image displayed at the sight line stopping position or restoring the transparency of the image displayed at the sight line stopping position to the original value.
10. A head-up display system comprising control means, display means and tracking means;
the display device comprises a transparent display screen arranged on a windshield and a 3D image generation element; the 3D image generation element covers the transparent display screen;
the control device is connected to the tracking device and the display device, respectively, for performing the image display method of the head-up display according to any one of claims 1 to 9.
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| CN113253455B (en) * | 2021-04-06 | 2022-11-15 | 东风汽车集团股份有限公司 | Automatic lane changing AR-HUD display system and use method |
| CN114879367B (en) * | 2022-05-27 | 2024-03-19 | 中国第一汽车股份有限公司 | Display control method and device of vehicle-mounted head-up display device, vehicle and storage medium |
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| US10532634B2 (en) * | 2016-07-29 | 2020-01-14 | Faraday&Future Inc. | Vehicle windscreens for enhanced visibility |
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| US20140368540A1 (en) * | 2013-06-14 | 2014-12-18 | Denso Corporation | In-vehicle display apparatus and program product |
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