Activation and optimization of night mode in camera surveillance applications

Abstract

The invention relates to a method for operating an image data processing device (16) of a vision system (10) of a vehicle (20). The method comprises receiving image data captured by at least one imaging device (12); receiving a state signal indicative of a daytime state or a night state; and processing the received image data according to the received status signal. Furthermore, the invention relates to a vision system (10) comprising an image data processing device (16) configured to perform the method and a vehicle (20) comprising the vision system (10).

Description

Technical Field

[0001] The invention relates to a method for operating an image data processing device of a vision system of a vehicle, a vision system with a corresponding image data processing device, and a vehicle with a corresponding vision system. Background Art

[0002] It is well known in the art to provide a vehicle with a camera monitoring system (CMS) to facilitate vehicle operation. Such a camera monitoring system generally includes a monitoring device connected to at least one camera device. Thus, the at least one camera device is generally configured to capture image data of the vehicle's surroundings and then display it on a monitoring device arranged in the vehicle.

[0003] Image quality (i.e., image signal processor (ISP)) settings for camera monitoring systems are typically optimized for daylight scenes. Using the same ISP settings when driving at night typically results in mediocre image quality (e.g., high colored noise, low dynamic range, over / under exposure), which increases the risk of accidents due to fatigue, distraction, or misjudgment of the situation.

[0004] One known approach to addressing this problem is to modify the operating settings of the monitoring device, for example by reducing the display brightness of the monitoring device at night (dimming). By reducing the power of the LED backlight located behind the display, the driver can be prevented from getting tired or distracted by the bright screen at night. However, the image content itself is usually not improved or adjusted. Therefore, image quality factors (key performance indicators) such as colored noise, dynamic range, exposure and / or white balance will still be insufficient. Summary of the invention

[0005] The object of the present invention is to provide an improved method for providing image data, for example to a vehicle driver, which method preferably avoids the disadvantages of conventional techniques. Preferably, the object of the present invention is to provide image data with improved image quality, in particular to provide image data suitable for night conditions and / or the current situation.

[0006] These objects are achieved by the subject matter of the independent claims, respectively. Preferred embodiments and applications of the invention are covered by the dependent claims.

[0007] According to a first independent aspect, a method for operating an image data processing device is provided.Preferably, the image data processing device is an image data processing device of a vision system of a vehicle, such as a rear view mirror replacement system.

[0008] The method comprises receiving image data captured by at least one imaging device. The at least one imaging device may be part of a vehicle and / or a vehicle vision system. For example, the at least one imaging device may comprise, for example, one or more cameras mounted on a vehicle. Preferably, the image data comprises rear-view image data captured at the side (e.g., lateral) and / or rear of the vehicle. For example, the at least one imaging device may be configured to capture a Class II field of view, a Class IV field of view and / or a Class V field of view in accordance with Directives 2003 / 97 / EC and 2007 / 38 / EC.

[0009] The method further comprises receiving a state signal, which state signal preferably indicates a day state or a night state. The state signal may be generated by a state device of the vehicle and / or a visual system of the vehicle. For example, the state device may be a brightness and / or light sensor. The brightness and / or light sensor may be configured to output a first state signal value indicating a day state when the brightness of the vehicle surroundings is above a predefined value, and to output a second state signal value indicating a night state when the brightness of the vehicle surroundings is below the predefined value.

[0010] The method further comprises (e.g. automatically) processing (e.g. post-processing) the received image data in accordance with the received status signal (e.g. by an image data processing device). Thus, the received image data may be processed differently depending on the received status signal, in particular depending on whether the status signal indicates a daytime state or a nighttime state. In this case, the processing step may comprise changing and / or modifying image processing settings based on the received status signal. For example, the processing step may comprise adjusting the contrast and / or brightness of the received image data. Preferably, the method further comprises outputting the processed image data, e.g. to a display device.

[0011] Unlike known concepts that only adjust (e.g. dim) display properties of the monitoring device (e.g. LED backlight intensity) for night conditions, the present solution advantageously adjusts the image content itself by correspondingly processing the captured image data. This advantageously enables the image data processing device to actively modify the image data more flexibly than simply adjusting the display appearance by the monitoring device. In this way, the image quality can be optimized to a greater extent (e.g. automatically) for the respective situation, so that the provided image data is better adapted to the current needs of the driver.

[0012] According to a first aspect, the processing steps may differ depending on whether the received status signal indicates a daytime state or a nighttime state. For example, the processing steps may include a daytime mode and a nighttime mode. Preferably, the image processing settings for processing the received image data differ depending on whether a nighttime state (e.g., nighttime mode) or a daytime state (e.g., daytime mode) is met or exists. By way of example only, the contrast, digital gain and / or white balance of the received image data may be changed based on the received status signal and / or the mode (e.g., daytime or nighttime) that exists. Advantageously, this allows the image data to be adapted to the current ambient light conditions.

[0013] According to another aspect, the processing step can include adjusting (e.g., enhancing and / or reducing) the contrast of the received image data. For example, the term "contrast" can refer to the difference between light and dark areas of the image data. Adjustment of contrast can be performed globally (e.g., affecting the entire tonal range of the image data) and / or locally (e.g., affecting regions of the image data individually).

[0014] Additionally or alternatively, the processing step may include adjusting (e.g., increasing and / or decreasing) a digital gain of the received image data. For example, the term "digital gain" may refer to a factor by which the image data is amplified after digital processing of at least one imaging device. Conversely, the term "analog gain or gain" may refer to a magnification of an output voltage of a photodetector of at least one imaging device before sampling by an analog-to-digital converter.

[0015] Additionally or alternatively, the processing step may comprise adjusting (e.g. increasing and / or reducing) noise filtering of the received image data. This may be done, for example, by using a denoising algorithm known per se (e.g. a spatial domain filter and / or a Wiener filter). In this case, the term "noise filtering" may, for example, refer to removing noise from the image data, in particular restoring a "real" image. Preferably, the adjustment of the noise filtering (e.g. depending on the received status signal) comprises changing the degree to which noise filtering is used and / or whether noise filtering is used.

[0016] According to another aspect, the method may further include outputting a control signal for at least one imaging device based on a received status signal (e.g., by an image data processing device). Thus, the control signal may cause at least one imaging device to adjust at least one image capture setting (e.g., frame rate, (analog) gain, exposure time, and / or exposure threshold) of at least one imaging device. For example, when the received status signal indicates a night state, the output control signal may cause at least one imaging device to reduce the frame rate (e.g., from 50fps to 25fps) and / or increase the exposure time. In addition to the above-mentioned adjustment of the image processing settings, this aspect advantageously allows active modification of the capture mode of the (e.g., original) image data, thereby further increasing the flexibility of adjusting / optimizing the image quality for the current state.

[0017] According to another aspect, the method may further include receiving a situation signal. The situation signal may be generated by a situation detection device of the vehicle and / or a visual system of the vehicle. The situation signal may indicate the current speed of the vehicle, the gear selection of the vehicle (e.g., forward or reverse) and / or the operating state of the vehicle (e.g., maneuvering, turning and / or highway driving). Therefore, the processing step also depends on the received situation signal. Therefore, preferably, the processing of the received image data may depend on the received state signal and the received situation signal. For example, the processing in the night mode may be different depending on whether the vehicle is reverse parking or driving on a highway. For example, in the first case, the image data processing device may enhance the contrast and brightness of the image data (e.g., in the night mode / setting) (e.g., so that the driver can see as many details as possible), while in the second case, the contrast and brightness of the image data (in the night mode / setting) may be reduced (e.g., so that the driver is less distracted). Advantageously, this allows the image quality to be optimally adjusted according to the corresponding driving situation, thereby improving the driver's situational awareness of various scenes.

[0018] According to another aspect, the processing step (e.g. of the received image data) may include reducing the contrast, digital gain and / or brightness of the received image data when the received situation signal indicates that the vehicle is traveling a long distance. For example, when the vehicle is traveling at a speed exceeding 60 km / h, a corresponding situation signal may be generated. This has the advantage of preventing the driver from becoming fatigued and / or distracted by the displayed image data.

[0019] Additionally or alternatively, the processing step (e.g. of the received image data) may also include increasing the contrast, digital gain and / or brightness of the received image data when the received situation signal indicates that the vehicle is maneuvering (e.g. parking process). For example, a corresponding situation signal may be generated when the vehicle is driving in reverse and / or driving at a speed below 25 km / h. This has the advantage that the driver can better identify objects and / or obstacles in the displayed image data.

[0020] According to another aspect, the method further comprises selecting an image data processing mode from predefined possible image data processing modes according to the received situation signal. For example, the predefined possible image data processing modes may include at least three predefined possible image data processing modes, preferably at least four (e.g. different) predefined possible image data processing modes. Merely by way of example, the predefined possible image data processing modes may include a reversing mode, a highway driving mode, a maneuvering mode and / or an urban driving mode. Preferably, each predefined possible image data processing mode may be associated with a specific processing method and / or a specific image processing setting of the received image data, respectively. Thus, the processing steps may be performed according to the selected image data processing mode. Advantageously, this allows the image quality to be optimally adjusted according to the respective driving situation.

[0021] According to another aspect, the predefined possible image data processing modes may include a reversing mode. For example, the reversing mode may include generating a wide angle field of view for the received image data. Preferably, only rear image data are processed during the processing step in the reversing mode. This may be achieved by selecting (e.g., only selecting) rear image data from the received image data and / or by controlling at least one imaging device such that the image data processing device receives (e.g., only receives) rear image data. This has the advantage that a larger overview of the rear area may be provided to the driver, thereby enabling him to easily detect possible objects or obstacles.

[0022] Additionally or alternatively, the predefined possible image data processing modes may include a highway driving mode. For example, the highway driving mode may include generating a zoomed field of view for the received image data. Preferably, the zoomed field of view is focused on a specific portion of the captured image data, for example on a portion relating to a distant area of ​​the vehicle's surroundings. Merely by way of example, the step of processing according to the highway driving mode may include processing the received image data such that the class II field of view is enlarged and / or the class V field of view is reduced. This has the advantage that the driver may be provided with relevant areas of interest without the need for additional interfering information about the direct surroundings.

[0023] Additionally or alternatively, the predefined possible image data processing modes may include a steering mode. For example, the steering mode may include generating a wide-angle field of view for the received image data. Preferably, the step of processing according to the steering mode may include processing the received image data such that information about a lateral area on the side of the vehicle is amplified and / or becomes more prominent. Merely by way of example, the step of processing according to the steering mode may include processing the received image data such that the field of view of class V is amplified, while the field of view of class II and / or the field of view of class IV is reduced. This has the advantage that a larger overview of the lateral area may be provided to the driver, thereby enabling him to easily detect possible objects or obstacles, for example when turning.

[0024] According to another aspect, the predefined possible image data processing modes may also include a default mode (e.g., an urban driving mode). For example, the default mode may be enabled by default unless the received situation signal indicates that the vehicle is in a specific operating state (e.g., reversing, highway driving and / or maneuvering). In this case, the above-mentioned reversing mode may preferably define a higher contrast, brightness and / or digital gain than the default mode. Additionally or alternatively, the above-mentioned highway driving mode may preferably define a lower contrast, brightness and / or digital gain than the default mode. Additionally or alternatively, the above-mentioned maneuvering mode may define a higher contrast, brightness and / or digital gain than the default mode. Advantageously, this again allows avoiding distraction or fatigue in driving situations where little additional image information is needed, but providing easily recognizable image information in parking and / or turning situations.

[0025] According to another aspect, the received image data may include data related to different fields of view. For example, the received image data may include a Class I field of view, a Class II field of view, a Class III field of view, a Class IV field of view, a Class V field of view and / or a Class VI field of view (e.g., in accordance with Directives 2003 / 97 / EC and 2007 / 38 / EC). Different fields of view preferably correspond to different viewing directions and / or fields of view of the vehicle's surroundings when the driver is sitting in the vehicle's driver's seat in a normal driving position. In addition or alternatively, different fields of view preferably correspond to the driver's field of view, which will actually be displayed in the vehicle's rearview mirror device (e.g., required by law). In this case, the processing step (e.g., of the received image data) may preferably include merging different fields of view into a combined field of view. For example, different fields of view may be combined and / or adjacent to each other. Preferably, the combined field of view provides a (possibly distorted) visualization of different fields of view in a single image, preferably providing a continuous visualization of different fields of view. Advantageously, this allows a single representation of the vehicle's surroundings to be provided to the driver, the single representation including relevant information for safe vehicle guidance.

[0026] According to another aspect, the relative portions of the different fields of view in the combined field of view are changed in dependence on the selected image data processing mode. Thus, preferably, the merging step comprises changing the relative portions of the different fields of view in the combined field of view in dependence on the selected image data processing mode. Thus, the expression "relative portions" may correspond, for example, to the relative areas that the different fields of view should occupy when displayed (e.g. on a display device).

[0027] For example, in highway driving mode, the Class V field of view or a portion of the Class V field of view may be reduced (e.g., narrowed) compared to the default mode. In other words, the different fields of view may be combined in highway driving mode such that the Class V field of view accounts for a smaller portion of the combined field of view than in the default mode. Additionally or alternatively, in highway driving mode, the Class IV field of view and / or the Class II field of view may be increased (e.g., enlarged and / or expanded) compared to the default mode.

[0028] Additionally or alternatively, in the steering mode, the Class V field of view or a portion of the Class V field of view may be increased (e.g., enlarged and / or magnified) compared to the default mode. In other words, in the steering mode, the different fields of view may be combined so that the Class V field of view accounts for a larger proportion of the combined field of view than is the case in the default mode. Additionally or alternatively, in the steering mode, the Class IV field of view and / or the Class II field of view may be reduced (e.g., narrowed) compared to the default mode. Advantageously, this allows the driver to be provided with relevant vehicle surroundings information in a situation-specific manner, such that areas of particular relevance to the current situation may be displayed larger.

[0029] According to another aspect, the method may further include receiving a display brightness signal from a display device. For example, the display brightness signal may indicate the brightness of a display (e.g., an LCD display) of the display device, in particular the brightness of a backlight of the display of the display device. Therefore, preferably, the display brightness signal indicates the (e.g., manually adjusted or adjustable) brightness level of the display. In this case, the processing step may be performed according to the received display brightness signal. Therefore, preferably, the processing step may be performed according to the received display brightness signal, so that when the display brightness signal indicates that the brightness of the display increases, the contrast of the received image data is increased, and / or when the display brightness signal indicates that the brightness of the display decreases, the contrast of the received image data is reduced. Therefore, processing and / or image processing settings may be associated with (e.g., manual) brightness adjustment of the display of the display device. Advantageously, this allows synergy between backlight brightness and image processing settings.

[0030] According to another aspect, the method may further include receiving a user request signal. The user request signal may be generated by a control device of the vehicle and / or a visual system of the vehicle. For example, the control device may be arranged on and / or integrated in the display device. For example, the control device may be configured as a touch-sensitive surface of a display. The user request signal may preferably indicate a command and / or request of a user. In this case, the method may further include adjusting an image processing setting (e.g., of an image data processing device) according to the received user request signal, the image processing setting being used, for example, to process the received image data. For example, this may include selecting another (e.g., currently unselected) image data processing mode and / or adjusting the (e.g., currently) selected image data processing mode according to the received user request signal. Advantageously, in this way, the user may actively select and / or change the image data processing mode. In addition or alternatively, the method and / or step of adjusting the image processing setting may include adjusting the contrast, digital gain and / or noise filtering of the received image data according to the received user request signal. Advantageously, the user is thus able to actively adjust the processing mode of the received image data. In addition or alternatively, the method and / or step of adjusting the image processing setting may include adjusting the portion of the received image data to be displayed according to the received user request signal. For example, the user can switch from a zoomed view to a wide-angle view, or vice versa.

[0031] According to another aspect, the method may further include outputting (e.g., by an image data processing device) processed image data. For example, the image data processing device may include a corresponding output terminal at which the processed image data may be provided. Preferably, the processed image data is output to be displayed on a display device. For example, the processed image data may be output in a data format readable by a display device. Thus, the display device may be part of a vehicle and / or a visual system of a vehicle (e.g., a rearview mirror replacement system). The processed image data may include image data of a Class II field of view, a Class IV field of view, and / or a Class V field of view. The display device may be configured to simultaneously display Class II, Class IV, and / or Class V fields of view, for example, on the same monitor and / or display of the display device.

[0032] According to another aspect, the method may further comprise generating a zoomed field of view and / or a wide angle field of view of the received image data in dependence on the received situation signal. The zoomed field of view preferably focuses on a specific portion of the captured image data, while the wide angle field of view preferably displays the entire detection range of the at least one imaging device. Advantageously, this allows providing a situation-specific field of view of the received image data.

[0033] According to another independent aspect, a vision system is provided. Preferably, the vision system is a vision system for a vehicle (eg, a car or a truck).

[0034] The vision system includes at least one imaging device (e.g., a camera) configured to capture image data. Preferably, the image data includes rear-view image data captured on the side (e.g., laterally) of the vehicle and / or behind the vehicle. The at least one imaging device may be part of the vehicle and / or arranged on the vehicle. For example, the at least one imaging device may be mounted in or on a camera arm that extends laterally outward from the vehicle body. Particularly preferably, the at least one imaging device is configured to capture one or more legally prescribed fields of view, such as a Class II field of view, a Class IV field of view, and / or a Class V field of view in accordance with Directives 2003 / 97 / EC and 2007 / 38 / EC.

[0035] The visual system further comprises a state device (e.g., a brightness and / or light sensor). The state device is configured to generate a state signal, which preferably indicates a day state or a night state. The state device may be part of the vehicle and / or arranged on the vehicle.

[0036] The visual system also includes an image data processing device (e.g., a processor). The image data processing device is configured to receive the captured image data and the generated status signal. To this end, the image data processing device can be connected to at least one imaging device and a status device, for example, via a corresponding cable or wireless signal connection. The image data processing device is also configured to process the received image data according to the received status signal. For example, the image data processing device can be configured to perform the method described herein. Therefore, the aspects related to the method described herein will also be disclosed and can be claimed in conjunction with the above-mentioned visual system, and vice versa.

[0037] According to one aspect, the visual system may further include a display device. The display device may be configured to display the processed image data. For example, the display device may include a display (e.g., an LCD display), which is preferably configured to display the processed image data. The display device may be part of the vehicle and / or arranged on the vehicle. For example, the display device may be arranged in the cab of the vehicle and / or in the cockpit of the vehicle, preferably arranged in the driver's field of view. The display device may be connected to the image data processing device, for example, via a cable or wireless signal connection. As described above, the display device may be configured to simultaneously display different fields of view, for example, simultaneously displaying Class II, Class IV and / or Class V fields of view, for example, on the same display of the display device.

[0038] According to another independent aspect, a (e.g. motor) vehicle is provided. Preferably, the vehicle may be a commercial vehicle, such as a truck or a bus. Thus, the vehicle may be specifically designed, for example due to its structure and equipment, for transporting goods, for conveying people and / or for towing one or more (e.g. agricultural) trailers. The vehicle comprises a vision system as described herein. Therefore, aspects described herein relating to the vision system and method will also be disclosed and claimable in conjunction with the vehicle, and vice versa.

[0039] According to one aspect, at least one imaging device may be configured to capture different fields of view, preferably class II, class IV and / or class V fields of view (e.g., in accordance with Directives 2003 / 97 / EC and 2007 / 38 / EC). For example, at least one imaging device may include a plurality of cameras, e.g., mounted in or on a common camera arm. The plurality of cameras may be aimed differently and / or have different viewing angles, respectively. In this case, the image data processing device may be configured to select image data of a subset of the plurality of cameras and / or merge / combine image data of the plurality of cameras.

[0040] In addition or as an alternative, the vision system may be part of a rearview mirror replacement system, in particular an external rearview mirror replacement system, of the vehicle. For example, the term "rearview mirror replacement system" may refer to a (e.g. primarily known) driver assistance system in which a (e.g. legally required) rearview mirror arrangement (e.g. external rearview mirror) of the vehicle is replaced by one or more imaging devices, wherein the images captured by these imaging devices are displayed on a display device in the vehicle. Thus, the imaging device in particular captures a portion of the vehicle's surroundings which would actually be displayed in the corresponding (e.g. legally required) rearview mirror arrangement. For example, at least one imaging device may be configured to capture image data corresponding to a main external rearview mirror (e.g. field of view II), a wide-angle external rearview mirror (e.g. field of view IV) and / or a close-up or oblique rearview mirror (e.g. field of view V). Thus, at least one imaging device may include and / or be at least one rearview mirror replacement imaging device.

[0041] Additionally or alternatively, the visual system may be operated to display a surround view of the vehicle's surroundings on a display device. For example, the term "surround view" (also referred to as a bird's-eye view) may refer to a (e.g. primarily known) driver assistance system in which the driver obtains a (e.g. artificial) image of the vehicle's surroundings and / or the vehicle from a bird's-eye view. In this case, the at least one imaging device may include a plurality of surround view cameras (e.g. including a front view camera, a rear view camera and / or at least one side view camera), wherein preferably the surround view cameras may be aimed in different directions. Additionally or alternatively, the at least one imaging device may be part of a combination of more than two imaging devices, the image data of which are merged / combined together to form a bird's-eye view of the vehicle. In this case, the at least one imaging device may preferably include at least four imaging devices (e.g. surround view cameras). BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The various aspects and features of the present disclosure described above may be combined in any manner. Further details and advantages will be described below with reference to the accompanying drawings.

[0043] Figure 1 A schematic diagram of a vehicle according to an embodiment is shown.

[0044] Figure 2 Two schematic diagrams of processed image data in a default mode according to an embodiment are shown, wherein different image processing settings are used.

[0045] Figure 3 Two schematic diagrams showing processed image data in highway driving mode, where different image processing settings were used.

[0046] Figure 4 Schematic diagram showing processed image data in default, maneuver, and highway driving modes. DETAILED DESCRIPTION

[0047] Figure 1 , Figure 2 , Figure 3 and Figure 4 The illustrated embodiments correspond at least in part, so that similar or identical parts are provided with the same reference numerals and, in order to avoid repetitions, reference is also made to the description of the other embodiments or figures for explanation.

[0048] Figure 1 A vehicle 20 according to an embodiment of the present disclosure is shown. For example only, the vehicle 20 is Figure 1 However, the vehicle 20 may be any type of vehicle, such as a car, a bus, a construction machine, an agricultural machine, etc.

[0049] The vehicle 20 includes at least one imaging device 12 , a status device 14 , and an image data processing device 16 .

[0050] The above components may be connected to each other. For example, the image data processing device 16 may be connected to at least one imaging device 12 and the status device 14, for example, via corresponding signal connections (dashed lines). Each corresponding signal connection may be a wired connection and / or a wireless connection.

[0051] Furthermore, at least one imaging device 12, state device 14, and image data processing device 16 may form a vision system 10 and / or may be part of a vision system 10 (e.g., a rearview mirror replacement system) of a vehicle 20. Thus, the vehicle 20 may have a vision system 10 that includes at least one imaging device 12, state device 14, and image data processing device 16.

[0052] At least one imaging device 12 may be configured to capture (e.g., in real time) image data. For example, at least one imaging device 12 may include one or more cameras. The one or more cameras may be mounted in or on a camera arm that preferably extends laterally outward from the vehicle body (e.g., extends laterally outward from the cab of the vehicle). At least one imaging device 12 may include at least one image sensor (e.g., a complementary metal oxide semiconductor (CMOS) image sensor and / or a charge coupled device (CCD) image sensor). At least one imaging device 12 may include one or more optical elements (e.g., a lens, a mechanical shutter, an electronic shutter, and / or an aperture).

[0053] The at least one imaging device 12 may be configured to detect optical information of the vehicle surroundings. In particular, the at least one imaging device 12 may be configured to capture front image data (of the vehicle surroundings) in front of the vehicle 20, capture lateral image data (of the vehicle surroundings) on the side (e.g., left and / or right) of the vehicle 20 and / or capture rear image data (of the vehicle surroundings) behind the vehicle 20. Preferably, the at least one imaging device 12 may be configured to capture a rearward side view of the vehicle surroundings (along the vehicle 20). This rearward side view (e.g., due to the arrangement of the at least one imaging device 12 in front of the windshield of the vehicle 20) may at least partially also include a portion of the vehicle surroundings (directly) in front of the vehicle and / or laterally in front of the vehicle. The at least one imaging device 12 may be configured to capture a field of view of the vehicle surroundings, e.g., in accordance with the legal requirements of Directives 2003 / 97 / EC and 2007 / 38 / EC.

[0054] For example, at least one imaging device 12 may be configured to capture a Class II field of view, which may include a long-range rearward field of view along the side of the vehicle 20. The Class II field of view may correspond to the field of view typically captured by the primary exterior rearview mirror of the vehicle 20.

[0055] Additionally or alternatively, at least one imaging device 12 may be configured to capture a Class IV field of view, which may include a wide-angle (rearward) field of view lateral to the vehicle 20. The Class IV field of view may cover a shorter but wider lateral portion of the vehicle's surroundings than the Class II field of view. The Class IV field of view may correspond to the field of view typically captured by a wide-angle exterior rearview mirror of the vehicle 20.

[0056] Additionally or alternatively, at least one imaging device 12 may be configured to capture a Class V field of view, which may include a close-up view of the lateral areas to the side of the cab of the vehicle 20 (and possibly partially in front of the cab), in particular to the passenger side of the vehicle 20 and / or to the lateral areas to the side of the cab of the vehicle 20. The lateral area may start from the leading edge of the vehicle 20. The Class IV field of view may correspond to the field of view typically captured by the oblique rearview mirrors and / or side zone safety mirrors of the vehicle 20.

[0057] Therefore, the (received) image data may include Class II field of view image data, Class IV field of view image data and / or Class V field of view image data. Additionally or alternatively, the (received) image data may also include Class I field of view image data and / or Class III field of view image data.

[0058] In addition, the at least one imaging device 12 may include a plurality of (e.g., four) imaging devices 12. The plurality of imaging devices 12 may be dispersedly arranged on the vehicle 20. The plurality of imaging devices 12 may be oriented differently and / or have different viewing ranges. For example, the at least one imaging device 12 may include a rear-view camera, a front-view camera, and / or a side-view camera. The at least one imaging device 12 or the plurality of imaging devices 12 may form part of a rear-view mirror replacement system (e.g., a replacement for an external rearview mirror) of the vehicle 20 and / or a bird's-eye view system of the vehicle 20.

[0059] The state device 14 may be configured to generate and / or output a state signal. Preferably, the state signal may indicate a day state or a night state. Additionally or alternatively, the state signal may also indicate the light conditions of the vehicle's surroundings. For example, when the brightness of the vehicle's surroundings is higher than a predefined value, the state signal may have a first state signal value, and when the brightness of the vehicle's surroundings is lower than the predefined value, the state signal may have a second state signal value. In this case, the state device 14 may include a brightness and / or light sensor. Additionally or alternatively, the state device 14 may also include a clock, a timer and / or an interface configured to receive external input indicating a day state and / or a night state.

[0060] The image data processing device 16 may be configured to receive inputs from at least one imaging device 12 and the status device 14. In particular, the image data processing device 16 may be configured to receive captured image data from at least one imaging device 12 and a status signal generated from the status device 14. The image data processing device 16 may include a memory and / or at least one processor (e.g., an image signal processor (ISP)) for processing images and / or image data. The memory may be configured to store instructions executable by at least one processor.

[0061] The image data processing device 16 may be configured to process the received image data. For example, the image data processing device 16 may be configured to change the received image data (e.g., change the quality and / or key performance indicators of the received image data) by image processing. Preferably, the image data processing device 16 may be configured to adjust or change the contrast, digital gain, noise filtering, white balance, brightness, lightness and / or clarity of the received image data.

[0062] Therefore, the image data processing device 16 can be configured to process the received image data according to the received status signal. Therefore, the image data processing device 16 can be configured to process the received image data in different ways according to the received status signal, which will be Figure 2 , Figure 3 and Figure 4. In particular, the processing may be different depending on whether the received status signal indicates a daytime state or a nighttime state. For example, the received status signal may trigger a daytime mode or a nighttime mode of the image data processing device 16 to process the received image data. Depending on the status signal and / or the corresponding mode (daytime or nighttime mode), the image processing settings for processing the received image data may vary. For example, the image data processing device 16 may be configured to adjust the contrast, digital gain, noise filtering, white balance, brightness, lightness and / or clarity of the received image data according to the received status signal and / or mode. In particular, the image data processing device 16 may be configured to optimize the image quality for the daytime state and / or the nighttime state, respectively. For example, the image data processing device 16 may be configured to increase the contrast and / or reduce the brightness of the received image data when the received status signal indicates a nighttime state.

[0063] Furthermore, the image data processing device 16 may be configured to output a control signal to the at least one imaging device 12. The control signal may cause the at least one imaging device 12 to change and / or adjust at least one image capture setting of the at least one imaging device 12. In this case, the term "image capture setting" may, for example, refer to a (hardware or software) setting of the at least one imaging device 12, which determines the manner in which the at least one imaging device 12 captures (e.g., raw) image data. For example, the at least one image capture setting may include a frame rate, (analog) gain, black level, exposure time, and / or exposure threshold of the at least one imaging device 12. Thus, the frame rate may define the number of frames per second that the at least one imaging device 12 will attempt to transmit. The black level may define a brightness level, which corresponds to the darkest value of the at least one imaging device 12. By adjusting the black level, possible dark currents may be compensated. The exposure time may define the length of time that the at least one imaging device 12 collects photons per frame. The exposure threshold may define the level at which the saturation of the at least one imaging device 12 is reached. In addition or alternatively, the at least one image capture setting may also include a focus and / or an aperture of the at least one imaging device 12.

[0064] In particular, the image data processing device 16 may be configured to output a control signal to at least one imaging device 12 according to the received signal. Therefore, the image data processing device 16 may be configured to output a control signal in different ways according to the received status signal, which will be Figure 2 , Figure 3 and Figure 4 For example, the output may differ depending on whether the received status signal indicates a day state or a night state.

[0065] Furthermore, the vehicle 20 may comprise a situation detection device 15. The situation detection device 15 may be connected to the image data processing device 16, for example by corresponding signal connections (dashed lines). The situation detection device 15 may be part of the vision system 10 of the vehicle 20. Therefore, the vision system 10 may also comprise the situation detection device 15.

[0066] The situation detection device 15 may be configured to generate and / or output a situation signal. The situation signal may indicate the (e.g. current) speed, gear selection and / or operating state of the vehicle 20. To this end, the situation detection device 15 may be connected to a corresponding controller and / or sensor device of the vehicle 20, such as a speed sensor, a gear sensor and / or a steering angle sensor. Furthermore, the situation detection device 15 may be configured to receive positioning data from a (e.g. GPS) positioning system of the vehicle. The situation detection device 15 may be configured to generate and / or output a situation signal based on information received from the controller, the sensor device and / or the positioning system.

[0067] Merely as an example, for example when the reverse gear of the vehicle 20 is engaged, the situation signal generated by the situation detection device 15 may have a first situation signal value indicating that the vehicle 20 is reversing. For example when the speed of the vehicle 20 exceeds 60 km / h or 100 km / h, the situation signal may have a second situation signal value indicating that the vehicle 20 is traveling on a highway. For example when the speed of the vehicle 20 is lower than 25 km / h and / or there is a (strong) steering movement, the situation signal may have a third situation signal value indicating that the vehicle 20 is maneuvering.

[0068] The image data processing device 16 may also be configured to process the received image data in accordance with the received situation signal. Thus, the image data processing device 16 may be configured to process the received image data in different ways in accordance with the received situation signal. For example, the received situation signal may trigger different image data processing modes of the image data processing device 16 to process the received image data. Merely as an example, the night mode may (automatically) adapt to different situations and / or operating states of the vehicle 20 (at night) in accordance with the situation signal. Thus, the image processing settings may (automatically) change for different driving speeds and directions (forward / reverse).

[0069] For example, different predefined image data processing modes can be stored and / or specified in the image data processing device 16. For example, the predefined image data processing modes can include at least three predefined image data processing modes, preferably at least four predefined image data processing modes. Different predefined image data processing modes can define different image processing settings for processing received image data. Therefore, the image data processing device 16 can be configured to select an image data processing mode from predefined possible image data processing modes according to the received situation signal. This can be achieved by predefined rules or allocation tables, which assign different values ​​of the situation signal to the corresponding image data processing modes. In addition or alternatively, optimization methods (e.g., gradient-based Newton method and / or genetic optimization) can also be used. In addition, the image data processing device 16 can be configured to process the received image data according to the selected image data processing mode. For example, the processing method of the received image data and / or the image processing settings used may be different due to the selected image data processing mode.

[0070] For example, the predefined image data processing modes may include a default mode, a reverse mode, a highway driving mode, and / or a maneuvering mode.

[0071] Figure 2 The default mode shown may be, for example, an urban driving mode. The default mode may be enabled by default unless the situation signal indicates another operating state of the vehicle (e.g., reversing, highway driving and / or maneuvering). Additionally or alternatively, the image data processing device 16 may also select the default mode when the received situation signal indicates that the vehicle is driving in the city. For example, when the speed of the vehicle 20 is between 25 km / h and 60 km / h, the situation signal may, for example, have a fourth situation signal value indicating that the vehicle is driving in the city.

[0072] In a default mode, the image data processing device 16 may be configured to generate a combined field of view of the received image data (in a single image). To this end, different fields of view contained in the received image data may be combined. In particular, Figure 4 As shown, the II, IV and V field of view image data may be combined and / or merged into a single image. In this case, the image data or processed image data may include (eg perspective) distortions and / or deformations.

[0073] When the received situation signal indicates that the vehicle 20 is reversing, the reversing mode may be selected by the image data processing device 16. In the reversing mode, the image data processing device 16 may be configured to generate a wide angle field of view of the received image data. Preferably, the received image data may include rear image data (e.g. captured by a rear camera). Particularly preferably, only the rear image data is processed in the processing step in the reversing mode. In the reversing mode, the image data processing device 16 may also be configured to increase the contrast, brightness and / or digital gain of the received image data compared to the contrast, brightness and / or digital gain in the default mode.

[0074] When the received situation signal indicates that the vehicle 20 is traveling on a highway, the image data processing device 16 may select Figure 3 and Figure 4 In the highway driving mode, the image data processing device 16 may be configured to generate a zoomed view of the received image data. For example, the term "zoomed view" may refer to a view that is focused on a particular portion of the captured image data, such as a view that is focused on a particular portion of the environment outside the vehicle 20. The zoomed view may include an enlarged and / or magnified representation of a portion of the captured image data. Figure 4 As shown, in the highway driving mode, the Class V field of view may be reduced (e.g., narrowed) compared to the default mode and / or the maneuvering mode. The received image data may be processed so that information about the vehicle surroundings in the front and lateral directions is minimized and information about the vehicle surroundings in the rear direction is maximized. In the highway driving mode, the image data processing device 16 may also be configured to reduce the contrast, brightness, and / or digital gain of the received image data compared to the contrast, brightness, and / or digital gain in the default mode.

[0075] When the received situation signal indicates that the vehicle 20 is maneuvering, the maneuvering mode may be selected by the image data processing device 16. In the maneuvering mode, the image data processing device 16 may be configured to generate a wide angle view of the received image data. Figure 4 As shown, the Class V field of view may be increased (e.g., enlarged) compared to the default mode and / or highway driving mode. In addition, the Class IV field of view and / or the Class II field of view may be reduced (e.g., shrunk) compared to the default mode and / or highway driving mode. In addition, in the maneuvering mode, the image data processing device 16 may also be configured to increase the contrast, brightness, and / or digital gain of the received image data compared to the contrast, brightness, and / or digital gain in the default mode. Therefore, this association may be asymmetric, that is, the degree of increase in contrast (for maneuvering) may be much greater than the degree of decrease in contrast (for highway driving and / or long-distance driving).

[0076] Furthermore, the vehicle 20 may include a display device 18. The display device 18 may be connected to the image data processing device 16, for example via a corresponding signal connection (dashed line). The display device 18 may be part of the vision system 10 of the vehicle 20. Therefore, the vision system 10 may also include a display device 18.

[0077] The display device 18 may be configured to display the processed image data (e.g., real-time display, i.e., the situation displayed on the display device 18 preferably corresponds to the actual situation outside the vehicle 20). The display device 18 may be configured to receive the processed image data from the image data processing device 16. The display device 18 may include a display (e.g., an LCD display) and / or a monitor. The display and / or the monitor may be touch-sensitive (e.g., configured as a touch screen). The processed image data may be displayed on the monitor and / or the display of the display device 18.

[0078] The display device 18 may be arranged on the dashboard of the vehicle 20. Alternatively, the display device 18 may be arranged on an A-pillar of the vehicle 20. The display device 18 and / or the entire visual system 10 may be part of a rearview mirror replacement system of the vehicle 20. Thus, the display device 18 may be configured to display the vehicle surroundings that would normally be visible through the (missing) rearview mirror of the vehicle 20. The display device 18 may be permanently activated during operation of the vehicle 20. Additionally or alternatively, the display device 18 and / or the entire visual system 10 may be operated to display a surround view (or bird's eye view) of the vehicle surroundings.

[0079] The display device 18 may include a dimmer for adjusting the brightness of the display and / or monitor of the display device 18. For example, the dimmer may be formed as a knob and / or button on the display device 18. However, the dimmer may also be formed as a (virtual) key displayed on a (touch-sensitive) display and / or monitor. The display device 18 may be configured to generate and / or output a display brightness signal. Therefore, the display brightness signal may indicate the (current) brightness of the display and / or monitor of the display device 18. For example, the display brightness signal may be proportional to the displacement or setting of the dimmer. In particular, the display brightness signal may indicate the brightness of the backlight of the display and / or monitor of the display device 18. In particular, the image data processing device 16 may be configured to process the received image data according to the received display brightness signal. Therefore, the image data processing device 16 may be configured to process the received image data in different ways according to the received display brightness signal. For example, the image processing setting may be associated with the dimmer (i.e., the manual brightness adjustment of the display). In particular, the image data processing device 16 may be configured to increase the contrast of the received image data when the display brightness signal indicates that the brightness of the display is increased, and / or to reduce the contrast of the received image data when the display brightness signal indicates that the brightness of the display is decreased. Additionally or alternatively, the display brightness signal may be asymmetrically associated with the image processing setting.

[0080] In addition, the display device 18 and / or the vehicle 20 may include a control device 17. For example, the control device 17 may include one or more of a touch screen, a button, or a switch. The control device 17 may be arranged on the display device 18 and / or integrated in the display device 18. Therefore, the control device 17 may be part of the visual system 10 of the vehicle 20.

[0081] The control device 17 may be configured to generate and / or output a user request signal, for example based on input and / or actuation of the control device 17. The user request signal may indicate a command and / or request of a user, such as a command and / or request related to (post) processing of received image data. For example, the user request signal may indicate selection and / or adjustment of an image data processing mode; a change in an image processing setting; and / or a change and / or selection of a field of view (e.g., a zoom or wide-angle field of view).

[0082] In this case, the image data processing device 16 may be configured to process the received image data according to the received user request signal. Thus, the processing of the image data processing device 16 may be actively changed and / or adjusted by the user. The image data processing device 16 may be configured to adjust the image processing settings according to the received user request signal. Thus, as a supplement or alternative to the automatic adjustment, the driver may preferably manually control the range of the image processing settings. For example, the image processing settings for the night mode may be manually adjusted by the driver.

[0083] For example, the image data processing device 16 may be configured to adjust the selected image data processing mode according to the received user request signal, and / or select another image data processing mode according to the received user request signal. As an example only, the user may (manually) request to change the reverse mode to the maneuvering mode, for example, by performing a corresponding control action at the control device 17 (e.g., by pressing a maneuvering mode button of the control device 17). The control device 17 may then generate and output a corresponding user request signal indicating the above-mentioned image data processing mode change, and the image data processing device 16 may be configured to change the corresponding image data processing mode based on the received user request signal.

[0084] Additionally or alternatively, the image data processing device 16 may be configured to adjust the contrast, digital gain, noise filtering, white balance, brightness, lightness and / or sharpness of the received image data according to the received user request signal. As an example only, the user may (manually) request to change the contrast of the (displayed) image data, for example, by performing a corresponding control action at the control device 17 (e.g., by operating a contrast key of the control device 17). The control device 17 may then generate and output a corresponding user request signal indicating the above-mentioned contrast change, and the image data processing device 16 may be configured to change the contrast of the received image data based on the received user request signal.

[0085] In addition or alternatively, the image data processing device 16 may be configured to adjust the portion of the received image data to be displayed according to the received user request signal. For example, the image data processing device 16 may be configured to adjust the image range and / or field of view to be displayed generated from the received image data according to the received user request signal. In particular, the image data processing device 16 may be configured to generate a zoom field of view or a wide-angle field of view of the received image data according to the received user request signal. As an example only, the user may (manually) request to change the field of view from the current (displayed) zoom field of view to the wide-angle field of view, for example, by performing a corresponding control action at the control device 17 (for example, by pressing a wide-angle field of view button of the control device 17). Then, the control device 17 may generate a corresponding user request signal indicating the above-mentioned field of view change, and the image data processing device 16 may be configured to generate a wide-angle field of view of the received image data based on the received user request signal.

[0086] Figure 2An example of processed image data in a default mode (e.g., displayed on a display device 18) is shown. Thus, the left image and the right image show the same shooting situation or received image (raw) data, but different image processing settings are used when processing the received image data. For ease of display, the difference mainly relates to image brightness, but this does not mean to limit the subject matter in any way. As shown, both processed image data exemplarily show a view of an inner city street at night, wherein in this exemplary case, the received image data includes rear image data. For example, the side portion of a vehicle 20 is visible on the respective left portions of the left and right images. By comparing the images, it can be seen that in the left image, essentially only the street 22 is visible, which is illuminated by another vehicle 21 behind the vehicle 20, while the surroundings of the street 22 are very dark. In the right image, the image processing settings are changed so that the overall brightness of the image is increased and more details of the surroundings of the street 22 (e.g., parked cars) can be better recognized. By default, only the standard settings of the image processing settings (e.g., the settings that produce the left image or the right image) can be used. However, the driver can manually adjust the image processing settings, for example via the vehicle's control device and / or the vehicle's visual system, so that the respective other image (right image or left image) is generated in this exemplary case. In addition, it should be pointed out again that it is also possible to change other image processing settings, such as changing the contrast, digital gain and / or sharpness of the received image data, but these settings are difficult to represent with a line diagram.

[0087] Figure 3 An example of processed image data (e.g., displayed on the display device 18) in highway driving mode is shown. Again, the left image and the right image here show the same shooting situation or received image (raw) data, but different image processing settings are used when processing the received image data. Figure 2The same situation, for ease of display, the different image processing settings mainly relate to image brightness, but this is not meant to limit the subject matter in any way. As shown in the figure, two processed image data exemplarily show a zoomed view of a highway situation at night, wherein in this exemplary case, the received image data includes rear image data. By comparing the images, it can be seen that in the left image, another vehicle 21 traveling behind the vehicle 20 can be seen, but due to the overall reduced brightness, the driver will not be overly dazzled by the light from the other vehicle 21. In contrast, in the right image, the image processing settings have been changed so that the overall brightness of the image is increased, resulting in a very bright image being displayed on the display device 18. By default, the standard settings of the image processing settings (e.g., settings that produce a darker left image) can be used. However, the driver can manually adjust the image processing settings, for example, through the vehicle's control device and / or the vehicle's visual system, so as to produce the right image in this exemplary case. In addition, it should be pointed out again that other image processing settings may also be changed, such as changing the contrast, digital gain and / or clarity of the received image data, but these settings are difficult to represent with line drawings.

[0088] Figure 4 A schematic diagram of processed image data in default, maneuvering and highway driving modes is shown, wherein the processed image data includes different fields of view. In this example, the processed image data (and received image data) include image data related to class II, class IV and class V fields of view of the vehicle surroundings according to Directives 2003 / 97 / EC and 2007 / 38 / EC. In the processing step, different fields of view can be combined into a combined field of view, wherein the relative portions of different fields of view in the combined field of view can vary according to the corresponding image processing mode. For example, in the maneuvering mode, the portion of the class V field of view can be increased compared to the default mode. Therefore, the size of the (same) class V field of view or class V field of view image data displayed on the display device 18 can be larger than in the default mode. In addition, the portion of the class IV field of view and the class II field of view can be reduced compared to the default mode. Therefore, the size of the class II and class IV fields of view displayed on the display device 18 can be smaller than in the default mode. In addition or alternatively, in the highway driving mode, the portion of the class V field of view can be reduced (e.g., reduced) compared to the default mode. Therefore, the size of the V-type field of view or the V-type field of view image data displayed on the display device 18 may be smaller than that in the default mode.

[0089] Although the present invention has been described with reference to specific embodiments, it will be apparent to those skilled in the art that various modifications and equivalent substitutions may be made without departing from the scope of the present invention. Therefore, the present invention should not be limited to the disclosed embodiments, but should cover all embodiments falling within the scope of the appended claims. In particular, the present invention also claims the subject matter and features of the dependent claims independent of the cited claims.

[0090] Reference numerals list

[0091] 10Vision System

[0092] 12 Imaging device

[0093] 14 Status Device

[0094] 15. Condition detection device

[0095] 16. Image data processing device

[0096] 17 Control Device

[0097] 18 Display device

[0098] 20 vehicles

[0099] 21 Another vehicle

[0100] 22 Street

Claims

1. A method for operating an image data processing device (16) of a vision system (10) of a vehicle (20), comprising: Receiving image data captured by at least one imaging device (12), wherein the image data preferably includes rear-view image data captured at the side and / or rear of the vehicle (20); receiving a state signal indicating a day state or a night state, the state signal preferably being generated by a state device (14), such as a brightness sensor; and The received image data is processed according to the received status signal, and the processing preferably includes adjusting the contrast and / or brightness of the received image data.

2. The method according to claim 1, wherein: The processing steps differ depending on whether the received state signal indicates a day state or a night state.

3. The method according to claim 1 or 2, wherein: The processing steps include: adjusting the contrast of the received image data; and / or adjusting a digital gain of the received image data; and / or Adjusting noise filtering of the received image data.

4. The method according to any one of the preceding claims, further comprising: A control signal for the at least one imaging device (12) is outputted based on the received status signal, wherein the control signal causes the at least one imaging device (12) to adjust at least one image capture setting, preferably a frame rate, gain, exposure time and / or exposure threshold of the at least one imaging device (12).

5. The method according to any one of the preceding claims, further comprising: preferably receiving a situation signal from a situation detection device (15), the situation signal indicating the current speed, gear selection and / or operating state of the vehicle (20), and Therein, the processing step is also dependent on the received situation signal.

6. The method according to claim 5, wherein: The processing steps include: When the received situation signal indicates that the vehicle (20) is traveling a long distance, reducing the contrast, digital gain and / or brightness of the received image data; and / or When the received situation signal indicates that the vehicle (20) is in a maneuver, the contrast, digital gain and / or brightness of the received image data is increased, and the maneuver is preferably a parking process.

7. The method according to claim 5 or 6, further comprising: selecting an image data processing mode from predefined possible image data processing modes according to the received situation signal, the predefined possible image data processing modes preferably comprising at least three predefined possible image data processing modes, particularly preferably comprising at least four predefined possible image data processing modes, and The processing steps are performed according to the selected image data processing mode.

8. The method according to claim 7, wherein: The predefined possible image data processing modes include: a reverse mode, which preferably includes generating a wide angle field of view of said received image data; and / or a highway driving mode, which preferably includes generating a zoomed view of said received image data; and / or A manipulation mode which preferably includes generating a wide angle field of view of said received image data.

9. The method according to claim 8, wherein: The predefined possible image data processing modes also include a default mode, which is preferably an urban driving mode. in: The reverse mode defines a higher contrast, brightness and / or digital gain than the default mode; and / or The highway driving mode defines a lower contrast, brightness and / or digital gain than the default mode; and / or The manipulation mode defines a higher contrast, brightness and / or digital gain compared to the default mode.

10. A method according to any one of the preceding claims, wherein: The received image data includes data related to different fields of view, the different fields of view are preferably class II fields of view, class IV fields of view and / or class V fields of view, and The processing step includes merging the different fields of view into a combined field of view.

11. A method according to claim 10 when dependent on any one of claims 7 to 9, wherein: The relative portions of the different fields of view in the combined field of view vary according to the selected image data processing mode, Among them, preferably: In the highway driving mode, reducing the Class V field of view compared to the default mode; and / or In the maneuvering mode, the V-level field of view is increased compared to the default mode.

12. The method according to any one of the preceding claims, further comprising: receiving a display brightness signal from a display device (18), wherein the display brightness signal indicates the brightness of a display of the display device (18), preferably indicates the brightness of a backlight of the display of the display device (18), Wherein, the processing step is performed according to the received display brightness signal, preferably such that: When the display brightness signal indicates that the brightness of the display is increased, increasing the contrast of the received image data, and / or When the display brightness signal indicates that the brightness of the display is reduced, the contrast of the received image data is reduced.

13. The method according to any one of the preceding claims, further comprising: receiving a user request signal; as well as Adjusting image processing settings according to the received user request signal preferably results in: a) selecting another image data processing mode and / or adjusting the selected image data processing mode according to the received user request signal; and / or b) adjusting the contrast, digital gain and / or noise filtering of the received image data according to the received user request signal; and / or c) adjusting the portion of the received image data to be displayed according to the received user request signal.

14. A vision system (10) for a vehicle (20), comprising: at least one imaging device (12) configured to capture image data, the image data preferably comprising rear-view image data captured at the side and / or rear of the vehicle (20); A state device (14), which is preferably a brightness sensor, wherein the state device (14) is configured to generate a state signal indicating a day state or a night state; and An image data processing device (16), wherein the image data processing device (16) is constructed to receive the captured image data and the generated status signal, and is also constructed to process the received image data according to the received status signal, wherein the image data processing device (16) is preferably constructed to perform the method according to any one of the preceding claims.

15. The visual system (10) of claim 14, further comprising: A display device (18) is configured to display the processed image data, wherein the display device (18) preferably comprises a display configured to simultaneously display a Class II field of view, a Class IV field of view, and a Class V field of view.

16. A vehicle (20), preferably a commercial vehicle, comprising: A visual system (10) according to claim 14 or 15.

17. The vehicle (20) of claim 16, wherein: The at least one imaging device (12) is configured to capture different fields of view, preferably a class II field of view, a class IV field of view and / or a class V field of view; and / or The vision system (10) is part of a rearview mirror replacement system of the vehicle; and / or The vision system (10) is operable to display a surround view of the vehicle's surroundings on the display device (18).

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