EP3747188A1 - Surroundview-system für ein fahrzeug - Google Patents
Surroundview-system für ein fahrzeugInfo
- Publication number
- EP3747188A1 EP3747188A1 EP19701755.1A EP19701755A EP3747188A1 EP 3747188 A1 EP3747188 A1 EP 3747188A1 EP 19701755 A EP19701755 A EP 19701755A EP 3747188 A1 EP3747188 A1 EP 3747188A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- image data
- camera
- image
- surround view
- pixels
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/20—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/22—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles for viewing an area outside the vehicle, e.g. the exterior of the vehicle
- B60R1/23—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles for viewing an area outside the vehicle, e.g. the exterior of the vehicle with a predetermined field of view
- B60R1/27—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles for viewing an area outside the vehicle, e.g. the exterior of the vehicle with a predetermined field of view providing all-round vision, e.g. using omnidirectional cameras
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
- G06T3/4038—Image mosaicing, e.g. composing plane images from plane sub-images
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
- B60R2300/30—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of image processing
Definitions
- the invention relates to a surround view system for generating a surround view image for a vehicle, a vehicle with such a surround view system, a method for generating a surround view images, a program element and a computer-readable medium.
- driver assistance systems include surround view systems that allow the driver of the vehicle to view the vehicle environment.
- surround view systems include one or more
- Vehicle cameras which provide real images of the vehicle environment, which by a data processing unit of the surround view system to an environmental image of the
- Display unit is displayed.
- the real images of the vehicle environment acquired by the cameras of the surroundview system must first be projected on projection points of a virtual environment model of the
- Vehicle environment can be projected. Subsequently, from the perspective of a virtual camera, the thus created composite surround view image of the vehicle environment can be closed, which in turn can be displayed on the display unit as a surround view image. The position of the virtual camera for the calculation of the displayed
- Surroundview image can be varied here, so depending on the need or depending on the driving situation, the driver a different view of the vehicle environment can be displayed.
- the choice of the three - dimensional environment model, for the projection of the Real images as well as for the creation of the composite Surroundview image, is crucial for the quality of the displayed image.
- a first aspect of the invention relates to a surround view system for a vehicle.
- This surround view system has at least a first and a second camera and a control unit.
- the first and second cameras are configured to generate image data each having a plurality of pixels.
- the image data of the first camera has a first pixel density and the image data of the second camera has a second pixel density, which can also vary within the image data.
- the image data of the first and the second camera have at least one, at least partially, overlapping image area.
- the control unit is set up to select, select and / or weight the pixels image data in the overlapping image area on the basis of the pixel density for the purpose of combining the first and the second image data in order to produce a surround view image with the highest possible resolution.
- the overlapping image area control unit can control pixels (pixels) and image constituents of the
- Image data which are generated by the at least two cameras, first and second camera, determine on the basis of the pixel density in the respective region of the overlapping image area. Either a weighting between the pixels of the Image data of the first and the second camera on the basis of
- the first and second cameras may be different cameras, but also the same.
- the cameras can be side by side but also at an angle to each other, e.g. 60 ° or 90 °.
- the pixel density in this disclosure is the number of pixels covering a particular real area (area). In other words, the number of pixels per area.
- the pixel density can be influenced in particular by the optics in front of the camera, for example, by enlargement, reduction, distortion, compression or bending of the
- the overlapping image area in the context of this disclosure is an image area which occurs in at least two image data from two different cameras.
- the image information in the overlapping image area is present in at least two image data from different cameras.
- a surround view image does not necessarily have to image the entire environment (360 °), but a surround view image in the context of this application is rather an image with a high information content and viewing angle to understand, which image data of at least two Cameras was assembled.
- the surround view system may include more than two cameras, for example four or more.
- the weighting or selection of the pixels in the overlapping image area described above and below can also be transferred to a plurality of overlapping image areas.
- the pixel density of the image data of the first camera is different from the pixel density of the image data of the second camera.
- the pixel density of the first camera may be higher in at least one specific image area
- the image data of the first camera may be twice as high as the pixel density of the second camera in this image area.
- control unit is adapted to weight the pixels of the first image data and the corresponding image data of the second image data for the overlapping image area according to their respective pixel density.
- control unit determines the resulting pixel of the overlapping image area based on the pixel density of the first and second image data by means of a corresponding weight between the pixels of the pixels
- a weighting of the first and the second image data for the overlapping image area can be made on the basis of the respective pixel density.
- the weight may vary between 0 and 1 depending on the position of the pixel within the overlapping image area and the pixel density in that area, ie, the first image data or the second image data may be used (border areas or high difference in pixel density), but also a mixture (biending) of the first and second image data.
- the calculation of the resulting pixel based on the pixel density of the image data of the first and the second camera in the respective area of the overlapping image area can be done.
- a weighting based on pixel density may be appropriate to one
- control unit is adapted to set the respective pixels of the image data for the overlapping image area according to the formula
- Image data of the first and the second camera is the resulting pixel of the surroundview image.
- control unit is set up to select the pixels for the overlapping image area either from the first or the second image data on the basis of the respective pixel densities.
- the or pixels of the image data of the first or the second camera may be selected, which has a higher pixel density in the respective area.
- the weighting or selection of the pixels of the image data in the overlapping area is predetermined.
- the weighting or the selection of the pixels of the image data of the first and second cameras can be determined in advance how the weighting or the selection of the pixels of the image data of the first and second cameras takes place in the overlapping image area. This can be done, for example, on the basis of the physical properties or the intrinsic parameters of the camera or camera system used, i. Camera and optics, for example. Lens or lens, are determined.
- the weighting or the selection can be predetermined, since the characteristics of the cameras or the
- the fixed pre-determined weighting or selection of the pixels of the image data of the first and second cameras may depend on the characteristics of the cameras involved. For example, the resolution, the diffraction or distortion by the optics in front of the camera, the focal length, the aperture, the viewing angle, the field of view and the reduction or magnification by the optics in front of the camera. Furthermore, the intrinsic parameters of the cameras of the surround view system may be known in advance and these may be used to determine the weighting or selection of the pixels for the overlapping image area. According to a further embodiment of the invention, the weighting or the selection of the pixels of the image data in the overlapping image region takes place dynamically on the basis of the current image data of the first and the second camera.
- the weighting or selection may also be dynamic, i. at repetitive intervals, to be calculated by the control unit.
- the dynamic weighting or selection of the pixels of the image data in the overlapping image area is triggered by an event on the first or the second camera.
- the dynamic calculation of the pixels for the overlapping image area can be triggered by an event on one of the cameras involved. For example, contamination may cause one of the cameras to be compromised, as a result of which the control unit may adjust the weighting or selection of pixels for the overlapping image area to still produce or provide an optimal surround view image.
- the surround view system has at least four cameras, which are preferably arranged at the same angle to each other. Furthermore, two of the four cameras each have a pair
- the four or more cameras can be used to create a surround view image.
- the four cameras can be at equal angles to each other be arranged so that a camera is available for each front, back, left and right.
- the control unit can assemble the image data of all four cameras into a surroundview image. Furthermore, this can be four overlapping
- Image areas are created, which are each imaged in image data from two of the four cameras.
- the control unit may weight or select the pixels of the image data from two of the four cameras based on the pixel density.
- Another aspect of this invention relates to a vehicle having a previously described and described below
- the designation vehicle is not alone on one
- Construction machinery, rail vehicles, ships and aircraft such as helicopters or aircraft with a Construction machinery, rail vehicles, ships and aircraft such as helicopters or aircraft with a.
- Another aspect of the invention relates to a method for generating a surround view image.
- the method comprises the following steps:
- Another aspect of the invention relates to a program element that, when executed on a control unit of a surroundview system, instructs the surroundview system to perform the method described above and below.
- Another aspect of this invention relates to
- FIG. 1 shows a schematic representation of a vehicle with a surround view system according to an embodiment of the invention.
- FIG. 2 shows a block diagram of a surround view system according to an embodiment of the invention.
- FIG. 3 shows a schematic representation of a vehicle with a surround view system according to an embodiment of the invention.
- FIG. 4 shows a vehicle with a surround view system according to an embodiment of the invention.
- 5 shows a flow chart for a method for generating a surround view image according to an embodiment of the invention.
- the surroundview system 1 in FIG. 1 has four cameras 21, 22, 23, 24. These four cameras 21, 22, 23, 24 are each connected to a control unit 10 and transmit to this control unit 10 their respective image data.
- the image data of the four cameras 21, 22, 23, 24 each have a plurality of pixels (pixels).
- the number of pixels in the respective image data may be the same or different between the individual ones of the four cameras 21, 22, 23, 24. Further, by the number of pixels of the respective camera and the area covered by the camera (area), a pixel density for a certain area within the
- Image data This pixel density can also be influenced by the optics (lens or objective) in front of the respective camera 21, 22, 23, 24.
- the vehicle 2 is shown from above.
- the first camera 21 is directed to the right, the second camera 22 is directed forward, the third camera 23 is directed to the left and the fourth camera 24 is directed to the rear.
- the image data of the four cameras 21, 22, 23, 24 have an overlapping one in each pair
- the first camera 21 and the second camera 22 have a first overlapping image area 31.
- the second camera 22 and the third camera 23 have a second overlapping image area 32, the third camera 23 and the fourth camera 24 have a third overlapping image area 33, and the fourth camera 24 and the first camera 21 have a fourth overlapping image area 34 ,
- the control unit 10 is configured to assemble the image data of the four cameras 21, 22, 23, 24 such that a large one composite image arises, for example, a
- the pixels for the overlapping image areas 31, 32, 33, 34 can each be selected from two of the four cameras 21, 22, 23, 24 or the pixels of two cameras of the four cameras 21, 22, 23, 24 can each be weighted (biending).
- the control unit 10 is hereby set up to weight the pixels for the overlapping image areas 31, 32, 33, 34 on the basis of the pixel density of the respective image data of the cameras 21, 22, 23, 24, so that a composite image with the highest possible resolution results.
- the weighting of the pixels for the overlapping image area 31, 32, 33, 34 may be predetermined, so that no additional computing power is required for generating the surround view image.
- the weighting may also be dynamic, so that changes, such as
- the surroundview system 1 here has four cameras 21, 22, 23, 24 and a control unit 10.
- the four cameras 21, 22, 23, 24 are each connected to the control unit 10 and are adapted to transmit generated image data to the control unit 10.
- the transmitted image data each have a plurality of pixels (pixels).
- the image data of the cameras have pixel densities. In other words, different sized real areas are represented by different numbers of pixels (number).
- the type of camera and the camera arranged in front of the lens play a role.
- the pixel density may vary within the image data of the camera, for example depending on the position of the real object and its projection onto the image sensor of the camera, the distortions or the optical Effects in the optical system (camera and lens).
- the control unit 10 may be adapted to the individual image data of the four cameras 21, 22, 23, 24 to a
- Image areas the weighting or selection of the respective pixel of the image data of the four cameras 21, 22, 23, 24 based on the pixel density in this region. This can produce an image with the highest possible resolution and thus high quality.
- FIG. 3 has a selection of pixels from one of the two image regions which form the respective overlapping image region 31, 32, 33, 34.
- a separating line 41, 42, 43, 44 between the two image areas involved.
- On one side of the dividing line 41, 42, 43, 44 only pixels of the image data of a first camera are used, and on the other side of the dividing line 41, 42, 43, 44, only pixels of the image data of a second camera are used.
- four different dividing lines 41, 42, 43, 44 are shown for pixel selection in the respective overlapping image areas 31, 32, 33, 34.
- These dividing lines 41, 42, 43, 44 are exemplary and do not necessarily correspond to a real dividing line between image data from two cameras 21, 22, 23, 24 of an overlapping image area 31, 32, 33, 34.
- the first possible dividing line 41 will be in the first overlapping image area 31 shown, which from the viewpoint of the image data of the second camera 22 is a parabolic
- Dividing line is.
- the second possible dividing line 42 is shown within the second overlapping image area 32 and has a hyperbola shape as seen by the second camera 22.
- the third possible dividing line 43 is in the third overlapping one
- the pixel density of the fourth camera 24 in the third overlapping image area will be higher than the pixel density of the third camera 23 in the third overlapping image area 33.
- the fourth possible dividing line 44 is shown in the fourth overlapping image area 34 a zigzag shape between the image data of the fourth camera 24 and the first camera 21.
- the respective dividing lines 41, 42, 43, 44 can be fixed or dynamic. With a fixed dividing line 41, 42, 43, 44, this can be done in advance on the basis of the pixel density.
- the dynamic determination of the dividing line 41, 42, 43, 44 can be performed by the control unit 10 during operation.
- the surround view system 1 is hereby advantageously mounted in or on the vehicle 2 in order to generate an environment image of the vehicle 2 and to display it to the driver.
- a composite surround view image with the highest possible resolution is advantageous in order to be able to recognize as many details as possible.
- FIG. 5 shows a flow chart for a method for generating a surround view image.
- image data is generated by at least a first and a second camera.
- a second step S2 an overlapping image area of the image data of the first and the second camera determined, wherein this overlapping area is included in the image data of the first and the second camera.
- the pixel density is determined in the image data and in particular in the overlapping image area.
- an image is composed of the image data of the first and second cameras, wherein the pixels for the overlapping region are determined based on the pixel density of the image data of the first and second cameras.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Studio Devices (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Closed-Circuit Television Systems (AREA)
- Image Processing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018201316.0A DE102018201316A1 (de) | 2018-01-29 | 2018-01-29 | Surroundview-System für ein Fahrzeug |
| PCT/DE2019/200000 WO2019144999A1 (de) | 2018-01-29 | 2019-01-14 | Surroundview-system für ein fahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3747188A1 true EP3747188A1 (de) | 2020-12-09 |
Family
ID=65234342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19701755.1A Withdrawn EP3747188A1 (de) | 2018-01-29 | 2019-01-14 | Surroundview-system für ein fahrzeug |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3747188A1 (de) |
| DE (2) | DE102018201316A1 (de) |
| WO (1) | WO2019144999A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100020170A1 (en) * | 2008-07-24 | 2010-01-28 | Higgins-Luthman Michael J | Vehicle Imaging System |
| WO2011037964A1 (en) * | 2009-09-22 | 2011-03-31 | Tenebraex Corporation | Systems and methods for correcting images in a multi-sensor system |
| CN103377372B (zh) * | 2012-04-23 | 2017-12-22 | 无锡维森智能传感技术有限公司 | 一种环视合成图重叠区域划分方法和环视合成图表示方法 |
| US9509909B2 (en) * | 2013-11-18 | 2016-11-29 | Texas Instruments Incorporated | Method and apparatus for a surround view camera system photometric alignment |
| US10525883B2 (en) * | 2014-06-13 | 2020-01-07 | Magna Electronics Inc. | Vehicle vision system with panoramic view |
| EP3142066B1 (de) * | 2015-09-10 | 2024-06-12 | KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH | Bildsynthesizer für ein umgebendes überwachungssystem |
| EP3319306B1 (de) * | 2016-07-22 | 2019-10-09 | Panasonic Intellectual Property Management Co., Ltd. | Bildgebungssystem, und mobiles system |
| DE102016224905A1 (de) * | 2016-12-14 | 2018-06-14 | Conti Temic Microelectronic Gmbh | Vorrichtung und Verfahren zum Fusionieren von Bilddaten von einem Multikamerasystem für ein Kraftfahrzeug |
-
2018
- 2018-01-29 DE DE102018201316.0A patent/DE102018201316A1/de not_active Withdrawn
-
2019
- 2019-01-14 EP EP19701755.1A patent/EP3747188A1/de not_active Withdrawn
- 2019-01-14 WO PCT/DE2019/200000 patent/WO2019144999A1/de not_active Ceased
- 2019-01-14 DE DE112019000138.8T patent/DE112019000138A5/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018201316A1 (de) | 2019-08-01 |
| WO2019144999A1 (de) | 2019-08-01 |
| DE112019000138A5 (de) | 2020-07-02 |
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