System and method for projecting informative content for a motor vehicle

Abstract

System (1) for projecting informative content for a motor vehicle (50), comprising: an environmental sensor system (51), a controller (2) and at least one projection device (3) for projecting the content (11), wherein the environmental sensor system (51) is designed to detect the position (10) of a projection surface (20) outside the motor vehicle (50), and wherein the control (2) is designed to receive a content (11) to be projected and to adjust it on the basis of the detected position (10) so that, when projected onto the projection surface (20), it can be captured in a perspectively correct form from the perspective of a given viewer, and wherein the control (2) is further configured to control at least one projection device (3) on the basis of the adapted content (12), wherein at least one projection device (3) is a high-resolution spotlight (52), wherein the control (2) is further configured to adapt an intensity distribution within the content to be projected based on the detected position (10) and a detected surface texture (13), wherein the intensity distribution is adjusted based on the reflection and / or remission capacity of individual sections of the projection surface (20), so that, when projecting, a homogeneous illumination is achieved in terms of intensity from the perspective of the intended viewer.

Description

[0001] The invention relates to a system and a method for projecting informative content for a motor vehicle.

[0002] It is known to project informative content onto projection surfaces outside a motor vehicle, for example to warn a driver or another person, or to convey information.

[0003] From EP 2 689 966 A1, a projection system is known in which informative content can be projected onto a surface outside a motor vehicle using a projector. The projected content can be corrected based on the position of the surface and the perspective of a given viewer.

[0004] From DE 10 2015 012 021 A1, a method for operating a lighting device of a motor vehicle is known, which is controlled by means of control signals determined from image data to illuminate a projection surface, wherein the image data describe at least one image to be generated on the projection surface by the lighting device, wherein a headlight of the motor vehicle is used as the lighting device, wherein the control signals are adapted as a function of sensor data describing a position and / or an orientation of the projection surface with respect to the motor vehicle of a sensor device detecting the environment of the motor vehicle, such that an expected distortion of the image when illuminating the projection surface by the headlight is compensated.

[0005] From DE 10 2009 020 910 A1, a headlight system for a vehicle is known, comprising at least one light source, an image sensor arranged in the direction of the light emission of the light source, an environment detection device for detecting objects in the vicinity of the vehicle, and a control device coupled to the environment detection device and the image sensor, by means of which the image sensor can be controlled in such a way that a variable light emission of the headlight system can be generated. The headlight system is designed such that the light emitted by the light source passes through the image sensor and that, by means of the control device, the transmittance of the image sensor can be varied depending on the area, depending on the objects detected by the environment detection device in the vicinity of the vehicle.

[0006] From DE 10 2006 050 550 A1, a method for controlling a driving maneuver that can be performed at least partially automatically is known, by which a motor vehicle can be moved from an actual position to a target position, comprising the following steps: In the vicinity of the motor vehicle, a virtual target object at a target position for the motor vehicle is generated in the vicinity of the motor vehicle by projection using projection means provided on the motor vehicle; depending on operating actions of an operator of the motor vehicle, the target position is changed, whereby the target object in the vicinity of the motor vehicle is also moved; by a selection action of the operator, the changed target position is selected and adopted as the target position of the driving maneuver.

[0007] From WO 2017 / 050986 A1, a method for generating a light pattern to inform or assist an observer or driver is known. This involves a lighting device and a method for projecting a predefined light pattern into the vehicle's surroundings using the vehicle's lighting device. This includes determining a projection surface in the vehicle's vicinity, determining or providing the position of a predetermined observer, and controlling a lighting unit of the lighting device pixel by pixel, depending on the determined projection surface and the determined position of the predetermined observer, to generate the predefined light pattern.

[0008] From DE 10 2016 006 391 A1, a driver assistance system for a motor vehicle is known, comprising a lighting device which is designed to provide, in a first operating mode, a first beam of light rays with a first light distribution for imaging a first image content onto the environment of the motor vehicle and, in a second operating mode, a second beam of light rays with a second light distribution for imaging a second image content onto the environment; and an image acquisition unit which is designed to determine image data depending on the first image content and / or on the second image content.The driver assistance system comprises a control device designed to alternately activate the first operating mode and the second operating mode in periodic succession, and a calibration unit designed to modify the first image content based on image data acquired in the second operating mode. Furthermore, a motor vehicle with such a driver assistance system is known. In addition, a corresponding method is known.

[0009] Projecting informative content onto a surface outside a motor vehicle is currently only unsatisfactorily solved.

[0010] The invention is based on the objective of creating a system and a method for projecting informative content for a motor vehicle, in which the content can be projected in a simpler way onto a projection surface outside the motor vehicle.

[0011] The problem is solved according to the invention by a system with the features of claim 1 and a method with the features of claim 8. Advantageous embodiments of the invention are set forth in the dependent claims.

[0012] In particular, a system for projecting informative content for a motor vehicle is provided, comprising environmental sensors, a control unit, and at least one projection device for projecting the content. The environmental sensors are configured to detect the position of a projection surface outside the motor vehicle. The control unit is configured to receive content to be projected and, based on the detected position, to adapt it so that, when projected onto the projection surface, it can be perceived in perspectively correct form from the perspective of a predetermined viewer. The control unit is further configured to control the at least one projection device based on the adapted content. According to the invention, the at least one projection device is a high-resolution headlight.

[0013] Furthermore, a method for projecting informative content for a motor vehicle is provided, comprising the following steps: detecting the position of a projection surface by means of an environment sensor, receiving the content to be projected and adapting the received content to be projected based on the detected position by means of a control system, so that the content to be projected can be perceived in perspectively correct form from the perspective of a predetermined viewer when projected onto the projection surface, and projecting the adapted content onto the projection surface by means of at least one projection device, wherein the at least one projection device is, according to the invention, a high-resolution headlight.

[0014] A fundamental idea of ​​the invention is to use a high-resolution headlight as a projection device for projecting informative content onto a projection surface. In particular, the at least one high-resolution headlight is a headlight of a motor vehicle. The environmental sensors detect the position of the projection surface. The projection surface can be, for example, a roadway, the rear of a preceding vehicle, a sidewalk, or another suitable surface, such as a wall in a parking garage. Based on the detected position, the control system adjusts the content to be projected, for example, an infographic or a pictogram, in such a way that the content can be perceived in perspectively correct form from the viewpoint of a predetermined observer when projected onto the projection surface.For this purpose, for example, a perspective distortion is adjusted, and the content is pre-distorted by the control system so that it appears in a perspectively correct representation when projected from the viewer's point of view. The control system then adjusts the high-resolution spotlight according to the adjusted content.

[0015] The advantage of the invention is that by using a high-resolution spotlight as a projection device, no additional projector is required. This saves on material and manufacturing costs as well as installation space.

[0016] The intended viewer can be, for example, a driver, a passenger, or another occupant of the vehicle. However, the intended viewer can also be located outside the vehicle, such as a pedestrian or a driver or passenger of an oncoming vehicle. The control system then adjusts the projected content according to the respective perspective of the intended viewer. The system may use environmental sensors or other sensors designed to detect and determine the position, orientation, and / or viewing direction of the intended viewer, for example, using a camera, and transmit this information to the control system. Based on this data, the control system can then determine the intended viewer and their position, orientation, and / or viewing direction. Alternatively, the intended viewer may be predefined, e.g.,The intended observer can always be the driver of the vehicle. Due to the driver's fixed position in the vehicle, their position relative to the high-resolution headlight is also constant. In this case, the viewing direction can only change due to the choice of the projection surface's position.

[0017] A high-resolution spotlight is specifically a spotlight that comprises an array of individual light sources or pixels, each of which can be individually controlled. This allows for the projection of any desired pattern or information.

[0018] The at least one high-resolution headlight can, in particular, be a high-resolution front headlight of the motor vehicle. Furthermore, it can be provided that at least two of the front headlights of the motor vehicle, in particular a right and a left front headlight, are operated together in the system.

[0019] The at least one high-resolution spotlight can include at least one modulator in the form of a digital mirror device, a liquid crystal display, or a liquid crystal on silicon. Individual image elements of the modulator can be controlled separately, allowing for the generation of any desired content. For example, the at least one spotlight then includes a light source, imaging optics between the light source and the modulator, and projection optics for projecting the light modulated by the modulator onto the projection surface.

[0020] Alternatively, at least one headlight can incorporate a micropixel LED. Such a micropixel LED comprises several hundred to a thousand pixels, each of which can be individually controlled. Micropixel LEDs with a surface area of ​​4×4 mm are particularly common. 2 and 1024 image elements (pixels). In the future, there will be micropixel LEDs with between 10,000 and 20,000 image elements. This will allow any content to be displayed in high resolution. It may be possible for at least one high-resolution spotlight to also have a projection lens behind the micropixel LED.

[0021] The content to be projected can be in the form of a graphic, for example, graphic information such as traffic signs or pictograms. Alternatively, the projected content can also be text. The projected content does not have to be static; it can also change over time. For example, the projected content can consist of a film composed of several individual images.

[0022] It may be provided that at least one of the spotlights includes a Gaussian filter. This Gaussian filter serves to smooth edges, so that, for example, an infographic projected onto the projection surface does not appear pixelated due to a resolution limitation of the high-resolution spotlight, but rather edges and corners are rounded and can therefore be projected in a more appealing form for the intended viewer.

[0023] In one embodiment, the environmental sensors include a camera and / or a light detection and ranging (LIDAR) device and / or a laser scanner. This allows the position of the projection surface to be determined with high resolution.

[0024] In a further embodiment, the environmental sensors are additionally configured to detect the surface properties of the projection surface. The control system is further configured to adapt the received content based on these detected surface properties so that, when projected onto the projection surface, the content can be perceived by the intended viewer in an undistorted form across the entire projection. The surface properties include, in particular, the orientation of parts or sections of the projection surface. Furthermore, the surface properties can also include surface characteristics such as reflectivity and / or remission. The surface properties can be detected, for example, by means of a camera and / or a LiDAR system.In this context, "unrecorded" means, in particular, that the projection of the adapted content, as perceived by the viewer, should correspond to the content to be projected at all positions, especially with regard to the relative sizes of individual parts of the projection. The content perceptible to the viewer then corresponds to the content to be projected. Specifically, it can be provided that the projection surface is divided into individual sections, with a position, that is, in particular, an orientation of a surface normal, being determined for each section. In this way, the projection surface can be divided into a regular grid, for example, a square one. A surface normal is then determined for each grid element, for example, using environmental sensors.Based on the defined surface normals of the individual grid elements, the content to be projected is then adjusted so that, when projected onto the projection surface, it can be perceived by the intended viewer in a perspectively correct and undistorted form. In particular, this allows for the adjustment of any unevenness in the projection surface. For the intended viewer, the projected content then appears undistorted and without distortion.

[0025] In particular, it may be possible to create a three-dimensional model of the projection surface from the recorded surface properties. Based on this three-dimensional model, the control system creates a virtual back-projection of the unadapted content to be projected from the perspective of the specified viewer. The content to be projected is then calculated from the viewer's perspective, based on the three-dimensional model of the projection surface, to the adapted content to be projected by the high-resolution spotlight; that is, the path of the light is traced back from a target content at the location of the specified viewer (what the specified viewer is supposed to perceive) to the adapted content to be projected by the high-resolution spotlight (what the spotlight is supposed to project).As a result, the back-calculation provides, for example, a mapping function between the content to be projected and the adapted content, in which the three-dimensional model is reflected.

[0026] In particular, by taking surface properties into account, projection surfaces of any structure can be used. For example, the projection surface can be positioned, at least partially, on a non-planar object, such as a bridge pier or a bollard. By considering the surface properties during adjustment, the content to be projected can be perceived undistorted from the perspective of the intended viewer, even on the bridge pier or bollard.

[0027] In a further embodiment, the control system is designed to take into account current and / or predicted roll, pitch, and / or yaw movements of the vehicle during adaptation. This allows the content to be projected precisely onto the projection surface. Projection while the vehicle is in motion is also improved, as vehicle movements can be compensated for. The roll, pitch, and / or yaw movements of the vehicle can, for example, be detected by an inertial measurement system and queried by the control system from the vehicle's onboard electronics.

[0028] In one embodiment, the environmental sensor system comprises at least one laser and at least one camera. The control system is configured to control the laser and camera such that the laser projects a predetermined optical grating onto the projection surface, and the camera detects this projected optical grating. Furthermore, the control system is configured to determine the position and / or surface texture of the projection surface based on camera data captured by the optical grating projected onto the surface. This enables, in particular, a high-resolution determination of the surface texture. The optical grating can, for example, be a regular grid, consisting of regular straight lines arranged at right angles to each other. However, the optical grating can also have a more complex shape.When the optical grating is projected onto the projection surface, it is perspectively distorted according to the position of the projection surface and recorded according to the surface properties of individual sections of the projection surface, i.e., in particular from the perspective of the specified viewer or the at least one camera, it is compressed and / or stretched, etc. Since a shape of the optical grating is known, the position and surface properties of the projection surface can be determined and provided from the captured camera data.

[0029] In a further developed embodiment, the duration of the imaging and detection of the optical grating is selected such that a human observer cannot perceive the imaged optical grating, and / or the wavelength of the at least one laser is selected such that a human observer cannot perceive it. In other words, the optical grating is imaged in such a way that the intended observer does not perceive it and can only detect and perceive the projection of its content. Due to the reaction times of the human eye, the duration can be, for example, a few milliseconds or less. The wavelength can, for example, be in the infrared wavelength range, which is invisible to the human eye.

[0030] The control system is designed to adjust the intensity distribution within the projected content based on its detected position and / or surface properties. This intensity distribution is adjusted based on the reflectance and / or remission of individual sections of the projection surface, ensuring a homogeneous illumination from the perspective of the intended viewer.

[0031] In a further embodiment, the control system is additionally configured to receive illumination profile information and to control the high-resolution headlight in such a way that a predetermined area outside the vehicle is illuminated in a predetermined manner. The illumination profile information includes information about areas in the vicinity of the vehicle that are to be illuminated. In particular, environmental data acquired by the vehicle's sensors can also be taken into account. The control system is then configured to adjust the illumination profile based on the acquired environmental data so that the predetermined area outside the vehicle is illuminated in the predetermined manner.In particular, the position and / or surface properties of surfaces to be illuminated in the vicinity of the vehicle can also be taken into account, for example to change or adjust illumination intensities section by section.

[0032] In a further developed embodiment, the control system is designed to control the high-resolution spotlight in at least two operating states. In a first operating state, the content to be projected is projected, and in a second operating state, illumination occurs according to the received illumination profile information. A third operating state may also be provided, in which both illumination and projection of the content to be projected take place.

[0033] Parts of the system, especially the control system, can be designed individually or collectively as a combination of hardware and software, for example as program code that is executed on a microcontroller or microprocessor.

[0034] The advantages of individual embodiments of the method are the same as the advantages of individual embodiments of the system.

[0035] The invention is explained in more detail below with reference to preferred embodiments and the figures. These show: Fig. 1 a schematic representation of an embodiment of a system for projecting informative content for a motor vehicle; Fig. 2a a schematic representation of a projection of a zebra crossing from a perspective in a motor vehicle; Fig. 2b a schematic representation of the in Fig. 2a Projection of a zebra crossing shown from a perspective outside the motor vehicle; Fig. 3a a schematic representation of the projection of an arrow onto a flat road surface; Fig. 3b a schematic representation of a projection of the arrow onto an uneven road surface; Fig. 4a a schematic representation of a projection of a “STOP” text onto a flat road surface; Fig. 4b a schematic representation of a projection of the “STOP” text onto an uneven road surface.

[0036] In Fig. Figure 1 is a schematic representation of an embodiment of the system 1 for projecting informative content n for a motor vehicle 50. The system 1 comprises an environmental sensor 51, a control unit 2, and a high-resolution headlight 52 as a projection device 3. The system 1 is arranged in the motor vehicle 50.

[0037] The environmental sensor 51, for example a camera and / or a LIDAR sensor, detects the position 10 of a projection surface 20 outside the vehicle 50. The control unit 2 receives content 11 to be projected and adjusts it based on the detected position 10 so that the content 11 to be projected onto the projection surface can be perceived by a specified viewer in perspectively correct form.

[0038] After adjustment, the control unit 2 controls the high-resolution spotlight 52 based on the adjusted content 12, so that it projects the adjusted content 12 onto the projection surface.

[0039] In one embodiment, the environmental sensor 51 may be designed to additionally detect a surface condition 13 of the projection surface, and the control 2 may further be designed to additionally adapt the received content 11 on the basis of the detected surface condition 13 so that, when projected onto the projection surface, it can be perceived by the viewer in an undistorted form over the entire projection.

[0040] In one embodiment, the controller 2 can take into account current and / or predicted roll, pitch, and / or yaw movements of the vehicle 50 when adapting. For example, the controller 2 can query the relevant values ​​from the vehicle 50's on-board electronics, for example via a Controller Area Network (CAN) bus 4.

[0041] In one embodiment, the environmental sensor system 51 may comprise a laser 5 and a camera 6, wherein the controller 2 is configured to control the laser 5 and the camera 6 such that the laser 5 projects a predetermined optical grating, for example, a regular grid of lines, onto the projection surface, and the camera 6 detects this projected optical grating. The controller 2 or the environmental sensor system 2 then determines a position 10 and / or a surface finish 13 of the projection surface based on camera data captured by the optical grating projected onto the projection surface.

[0042] In a further developed embodiment, it can be provided that the duration of the imaging and detection of the optical grating is selected such that a human observer cannot perceive the imaged optical grating and / or that a wavelength of the laser 6 is selected such that a human observer cannot perceive it. This allows the position 10 and / or the surface texture 13 to be determined without the observer being aware of it.

[0043] It is intended that the control unit 2 adjusts an intensity distribution within the content to be projected based on the detected location 10 and / or the detected surface texture 13.

[0044] In some embodiments, it may be provided that the control unit 2 additionally receives illumination profile information 14 and controls the high-resolution headlight 52 in such a way that a predetermined area outside the motor vehicle 50 is illuminated in a predetermined manner.

[0045] In a further developed embodiment, the control unit 2 can control the high-resolution spotlight 52 in at least two operating states, wherein in a first operating state the content 11 to be projected is projected and in a second operating state illumination is provided according to the received illumination profile information 14. Furthermore, a third operating state can be provided in which both illumination and projection of the informative content take place.

[0046] In the Fig. 2a and Fig. Figure 2b shows schematic representations of a projection 30 of a zebra crossing onto a projection surface 20 from two different perspectives to illustrate the invention, wherein Fig. 2a the projection 30 from a perspective inside the motor vehicle 50 and Fig. 2b shows the same projection 30 from a perspective outside the motor vehicle 50. It is clearly visible that a viewer from the inside Fig. From the perspective shown in 2a, the projection 30 of the zebra crossing can be perceived correctly from the perspective shown in Fig. However, the perspective shown in 2b is not correct, as projection 30 is not displayed correctly there. With the help of the system, projection 30 can be adjusted so that the projection 30 of the zebra crossing can alternatively be seen from the viewer's perspective in the Fig. The perspective shown in 2b is displayed correctly in perspective, for example by making a corresponding pre-distortion of the content to be projected, i.e. the graphic of the zebra crossing.

[0047] In the Fig. 3a and Fig. Figure 3b shows schematic representations of a projection 30 of an arrow onto a projection surface 20, each from the same perspective, to illustrate the invention. Fig. 3a The projection 30 of the arrow onto a flat road surface 60 takes place, so that the projection surface 20 has a flat surface structure. In Fig. 3b, under otherwise identical conditions, the projection 30 of the arrow is onto an uneven road surface 61, so that the projection area 20 has an uneven surface structure. Due to the local irregularities of the uneven road surface 61, sections of the projection 30 vary in their orientation and area, so that the projection 30 of the arrow is locally deformed and can only be perceived incorrectly from the perspective of a given observer in the motor vehicle 50.

[0048] By determining the surface properties of the uneven road surface 61 using the vehicle's environmental sensors 50, the irregularities can be taken into account when adjusting the content to be projected. For example, by means of a virtual rear projection originating from the viewer, the content to be projected is adjusted, taking into account the detected surface properties, so that the content to be projected, when projected from the perspective of the specified viewer (here a viewer in the vehicle 50), can be perceived both perspectively correctly and in an undistorted form over the entire projection 30.

[0049] In particular, it may be provided that the control system creates a three-dimensional model of the projection surface 20, i.e., of the uneven road surface 61.

[0050] The described system and method allow the arrow to be perceived in a perspectively correct manner from the viewpoint of the specified observer, even on an uneven road surface 61, and in an undistorted form across an entire projection 30, as shown in Fig. 3a is the case.

[0051] In the Fig. 4a and Fig. Figure 4b shows further schematic representations of a projection 30 of the text “STOP” onto a projection surface 20, each from the same perspective, to illustrate the invention. Fig. 4a The projection 30 of the “STOP” text onto a flat road surface 60 takes place, so that the projection area 20 has a flat surface structure. In Fig. 4b, however, the projection 30 of the "STOP" text, under otherwise identical conditions, is onto an uneven road surface 61, so that the projection area 20 has an uneven surface structure. Due to the local irregularities of the uneven road surface 61, sections of the projection 30 vary in their orientation and area, so that the projection 30 of the "STOP" text is locally deformed and the "STOP" text can only be perceived incorrectly from the perspective of a given observer in the vehicle 50. Thus, the two middle letters appear significantly larger than the two outer letters.

[0052] The described system and procedure allow the "STOP" text to be perceived in a perspectively correct manner and without distortion across an entire projection 30, even on an uneven road surface 61, from the perspective of the specified observer, as shown in Fig. 4a is the case. Reference symbol list 1 system 2 Control 3 Projection equipment 4 CAN bus 5 lasers 6 cameras 10 positions 11 Contents 12 adapted content 13 Surface finish 14 Illumination profile information 20 projection surfaces 30 Projection 50 motor vehicles 51 Environmental sensors 52 high-resolution spotlights 60 level road surface 61 uneven road surface

Claims

[1] System (1) for projecting informative content for a motor vehicle (50), comprising: an environmental sensor system (51), a control (2) and at least one projection device (3) for projecting the content (11), wherein the environmental sensor system (51) is designed to detect a position (10) of a projection surface (20) outside the motor vehicle (50), and wherein the controller (2) is designed to receive a content (11) to be projected and to adapt it on the basis of the detected position (10) in such a way that, when projected onto the projection surface (20), it can be captured in a perspectively correct form from the viewpoint of a given observer, and wherein the controller (2) is further configured to control the at least one projection device (3) on the basis of the adapted content (12), wherein the at least one projection device (3) is a high-resolution headlight (52), wherein the controller (2) is further configured to adapt an intensity distribution within the content to be projected on the basis of the detected position (10) and a detected surface condition (13), wherein the intensity distribution is adjusted on the basis of a reflectance and / or remission capability of individual sections of the projection surface (20), so that when projecting, a homogeneous illumination is achieved in terms of intensity from the perspective of the given viewer. [2] System (1) according to claim 1, characterized byin that the environmental sensor system (51) is further designed to additionally detect the surface quality (13) of the projection surface (20), wherein the controller (2) is further designed to additionally adapt the received content (11) on the basis of the detected surface quality (13) in such a way that, when projected onto the projection surface (20), said content can be detected in undistorted form from the perspective of the predetermined viewer over an entire projection (30). [3] System (1) according to one of claims 1 or 2, characterized by that the controller (2) is further designed to take into account current and / or predicted rolling movements and / or pitching movements and / or yaw movements of the motor vehicle (50) during adaptation. [4] System (1) according to one of the preceding claims, characterized byin that the environmental sensor system (51) comprises at least one laser (5) and at least one camera (6), wherein the controller (2) is designed to control the at least one laser (5) and the at least one camera (6) in such a way that the at least one laser (5) images a predetermined optical grating onto the projection surface (20) and the at least one camera (6) captures this imaged optical grating, wherein the controller (2) or the environmental sensor system (51) is further designed to determine the position (10) and / or the surface quality (13) of the projection surface (20) on the basis of camera data captured by the optical grating projected onto the projection surface (20). [5] System (1) according to claim 4, characterized bythat a duration of imaging and detecting the optical grating is selected such that a human observer cannot perceive the imaged optical grating and / or that a wavelength of the at least one laser (5) is selected such that a human observer cannot perceive it. [6] System (1) according to one of the preceding claims, characterized by that the controller (2) is further designed to additionally receive illumination profile information (14) and to control the high-resolution headlight (52) in such a way that a predetermined area outside the motor vehicle (50) is illuminated in a predetermined manner. [7] System (1) according to claim 6, characterized byin that the controller (2) is further designed to control the high-resolution headlight (52) in at least two operating states, wherein in a first operating state a projection of the content (11) to be projected takes place and in a second operating state an illumination takes place according to the received illumination profile information (14). [8] A method for projecting informative content for a motor vehicle (50), comprising the following steps: Detecting a position (10) of a projection surface (20) by means of an environment sensor (51), receiving the content (11) to be projected and adapting the received content (11) to be projected on the basis of the detected position (10) by means of a controller (2), so that the content (11) to be projected can be captured in a perspectively correct form from the viewpoint of a given observer when projected onto the projection surface (20), and Projecting the adapted content (12) onto the projection surface (20) by means of at least one projection device (3), wherein the at least one projection device (3) is a high-resolution headlight (52), wherein, by means of the controller (2), an intensity distribution within the content to be projected is further adapted on the basis of the detected position (10) and a detected surface quality (13), wherein the intensity distribution is adapted on the basis of a reflectivity and / or remission capacity of individual sections of the projection surface (20), so that during projection, homogeneous illumination is achieved with regard to intensity from the perspective of the specified observer. [9] Method according to claim 8, characterized bythat the surface quality (13) of the projection surface (20) is additionally detected by means of the environmental sensor system (51) and the adaptation of the received content (11) is additionally carried out on the basis of the detected surface quality (13), so that when projected onto the projection surface (20), the latter can be detected in undistorted form from the perspective of the specified viewer over an entire projection (30).

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