WO2018233733A1 - Kamerasystem mit unterschiedlichen shuttermodi - Google Patents
Kamerasystem mit unterschiedlichen shuttermodi Download PDFInfo
- Publication number
- WO2018233733A1 WO2018233733A1 PCT/DE2017/200125 DE2017200125W WO2018233733A1 WO 2018233733 A1 WO2018233733 A1 WO 2018233733A1 DE 2017200125 W DE2017200125 W DE 2017200125W WO 2018233733 A1 WO2018233733 A1 WO 2018233733A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- camera
- camera system
- image
- angle
- global shutter
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/20—Image signal generators
- H04N13/204—Image signal generators using stereoscopic image cameras
- H04N13/25—Image signal generators using stereoscopic image cameras using two or more image sensors with different characteristics other than in their location or field of view, e.g. having different resolutions or colour pickup characteristics; using image signals from one sensor to control the characteristics of another sensor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/20—Image signal generators
- H04N13/204—Image signal generators using stereoscopic image cameras
- H04N13/239—Image signal generators using stereoscopic image cameras using two two-dimensional [2D] image sensors having a relative position equal to or related to the interocular distance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/20—Image signal generators
- H04N13/296—Synchronisation thereof; Control thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/61—Control of cameras or camera modules based on recognised objects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/50—Control of the SSIS exposure
- H04N25/53—Control of the integration time
- H04N25/531—Control of the integration time by controlling rolling shutters in CMOS SSIS
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/06—Generation of synchronising signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/45—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from two or more image sensors being of different type or operating in different modes, e.g. with a CMOS sensor for moving images in combination with a charge-coupled device [CCD] for still images
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/2628—Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation
Definitions
- the invention relates to a camera system, in particular a stereo camera system, for a driver assistance system comprising a camera with a rolling shutter and a camera with a global shutter.
- Conventional stereo cameras known from the prior art consist of two identical cameras which have both the same aperture angle and identical imagers with the same shutter modes .
- shutter modes a distinction is made between rolling shutter (all pixels are successively exposed and read out) and global shutter (all pixels are exposed simultaneously and then successively read out).
- Stereo cameras are preferably operated with global shutter imagers, since a synchronization of all pixels of the imagers is easy to realize even with different opening angle. Even with stereo cameras with rolling shutter imagers and the same aperture angle of the cameras, a good synchronicity of the exposure of the pixels can be realized, so that even depth images can be created with high precision.
- WO 2014/111814 A2 describes how imagers with rolling shutters are to be synchronized when they are used in a stereo camera system whose cameras have a different aperture angle in order to produce depth images with acceptable precision even with such camera systems. It is therefore an object of the invention to provide a novel camera system, which is adapted to receive depth images with high precision. This object is achieved by an inventive device according to claim 1 and by a method according to claim 11. Advantageous embodiments and embodiments are the subject of the dependent claims. Initial thoughts were to the effect that can at Stereokame ⁇ rasystemen not only cameras are used with different opening angles, but also cameras with different imagers and in particular with different ⁇ union Shuttermodi. Here it was important to provide a sufficiently high accuracy in the distance determination, since different shutter modes, the pixels of both cameras are exposed at different times.
- the invention relates to a camera system, in particular a stereo camera system, for a driver assistance system which comprises a first camera with a first aperture angle and a second camera with a second aperture angle, wherein the first camera generates a wide angle camera image and the second camera generates a telecamera image, wherein both camera images Have overlap area.
- the first camera is a rolling shutter camera and the second camera is a global shutter camera, wherein the camera system is designed to synchronize the two cameras.
- the optical axes of the first and second cameras may be parallel to each other.
- the overlapping area is preferably arranged centrally in the recorded wide-angle camera image.
- the over ⁇ overlapping part can also be arranged in another arbitrary image area of the wide-angle image.
- the rolling shutter camera is designed to trigger the synchronization.
- the synchronization takes place in such a way that, when a specific pixel is exposed by the rolling shutter camera, the global shutter of the second camera is opened. At one point in time, the exposure of the particular pixel of the rolling shutter camera and of the entire image sensor of the global shutter camera takes place. The selected pixel thus sets the synchronization point.
- the synchronization point can be arranged arbitrarily in the overlapping area.
- the camera system is arranged such that the global shutter of the telephoto camera image is syn ⁇ chronized towards the center of the overlap region.
- the global shutter is triggered when a central pixel in the overlapping area is exposed by the rolling shutter.
- a central area of the listed taken image can be taken with a high distance accuracy ⁇ . This may be advantageous, for example, for objects such as lost cargo on lanes (Highways, highways) to be recognized at great distances.
- the camera system is designed to synchronize the global shutter of the telecamera image so that it is triggered when the detected object is exposed in the wide-angle camera image upon detection of an object relevant to the driving situation.
- the global shutter is triggered when the relevant object is exposed in the wide-angle camera by the rolling shutter. That is, the synchro nization ⁇ the two cameras is adjusted upon detection of a relevant object, so that an alternative synchronization is possible.
- a regular synchronization of the cameras takes place again. In this way it is possible to perform an accurate size and distance determination of the detected object.
- Such an object may, for example, be another road user, such as a car or pedestrian, or else an obstacle or traffic sign.
- the rolling shutter camera has an opening angle between 100 ° and 140 °, preferably between 110 ° and 130 ° and particularly preferably of 120 °.
- the global shutter camera has an opening angle between 15 ° and 35 °, preferably between 20 ° and 30 ° and particularly preferably of 25 °.
- the Global Shutter Camera has a 2 n -fold higher resolution in pixels / degree than the Rolling Shutter Camera.
- the exponent n is selected from the set of natural numbers and 0.
- the camera system is designed such that a trigger signal is output to a pulsed operable illumination source such that the illumination source is operated synchronously with the global shutter camera.
- a trigger signal is output to a pulsed operable illumination source such that the illumination source is operated synchronously with the global shutter camera.
- the camera system comprises the pulsed operable illumination source and the illumination source is designed to provide illumination in the non-visible wavelength range.
- An invisible pulsed illumination is vor ⁇ geous, not to dazzle other road users.
- the pulsed illumination is preferably an infrared illumination.
- other light spectra not visible to humans would also be conceivable.
- the camera system is designed such that the resolution in the overlapping region of the cameras is upscaled by interpolation of the resolution of the wide-angle camera image.
- the invention further relates to a method for synchro nize a camera system, in particular a Stereokame ⁇ rasystem, for a driver assistance system, comprising a first camera having a first angle and a second camera with a second opening angle,
- the first camera is a wide-angle camera image and the second Camera generates a telecamera image
- both camera images have an overlap area
- the first camera is a rolling shutter camera and the second camera is a global shutter camera
- the global shutter camera is set to a time synchro nized ⁇ , when a specific pixel of the rolling shutter camera is exposed in the overlap region.
- FIG. 1 shows an exemplary representation of an image taken by the Ka ⁇ merasystem image in accordance with a preferred embodiment
- Figure 2 another exemplary representation of a through the
- FIG. 3 is a schematic flow diagram for a method according to the invention.
- Figure 4 a schematic view of an inventive
- FIG. 1 shows an exemplary representation of an image 1 taken by the camera system 10 according to a preferred embodiment.
- a wide-angle camera image 2 and a telecamera image 3 are shown.
- an overlapping region 6 of the two camera images 2, 3 is obtained.
- This synchronization point 4 is defined by a pixel which is located centrally within the overlap area 6. The synchronization therefore takes place when the central pixel or the synchronization point 4 is exposed by the rolling shutter. Furthermore, a roadway 5 is shown in this illustration.
- FIG. 2 shows a further exemplary representation of an image 1 taken by the camera system 10 according to a preferred embodiment.
- the individual camera images 2, 3 and the overlapping region 6 are shown here.
- the roadway 5 is also recognizable.
- a relevant object 7 is detected.
- the relevant object 7 is another, located on the roadway 5 vehicle. Due to the detection of this object 7, the synchronization point 4 is moved out of the center of the camera image 1, so that it is now located centrally on the object 7.
- the global shutter is triggered only when the pixel of the shifted synchronization ⁇ point 4 is exposed by the rolling shutter.
- FIG. 3 shows a schematic flow diagram for a method according to the invention.
- step S1 a wide-angle camera image 2 is recorded.
- a Te ⁇ legensent 3 is received in step S2, which is initially synchronized such that it is triggered in a step S3, when the center of the overlap region is exposed in Sl.
- the overlap area has previously been determined in a calibration step. This can for example already be carried out at the factory. However, the overlap area 6 of the two images can be moderately continuously recalibrated online.
- an adaptation of the synchronization takes place the global shutter camera instead when an object in the overlapping ⁇ pungs Scheme is detected.
- FIG. 4 shows a schematic view of a camera system 10 according to the invention.
- two cameras 11 and 12 are shown. These cameras 11, 12 each have a different opening angle.
- a camera as a rolling shutter camera and the other camera as a global shutter camera is formed from ⁇ .
- the two cameras 11, 12 are in turn connected to an image processing module 13.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Studio Devices (AREA)
- Cameras In General (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112017007452.5T DE112017007452B4 (de) | 2017-06-21 | 2017-12-05 | Kamerasystem mit unterschiedlichen Shuttermodi |
| US16/612,477 US11146719B2 (en) | 2017-06-21 | 2017-12-05 | Camera system having different shutter modes |
| CN201780092285.8A CN110771153B (zh) | 2017-06-21 | 2017-12-05 | 具有不同快门模式的摄像机系统 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017210408.2 | 2017-06-21 | ||
| DE102017210408.2A DE102017210408A1 (de) | 2017-06-21 | 2017-06-21 | Kamerasystem mit unterschiedlichen Shuttermodi |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2018233733A1 true WO2018233733A1 (de) | 2018-12-27 |
Family
ID=61005644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2017/200125 Ceased WO2018233733A1 (de) | 2017-06-21 | 2017-12-05 | Kamerasystem mit unterschiedlichen shuttermodi |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US11146719B2 (de) |
| CN (1) | CN110771153B (de) |
| DE (2) | DE102017210408A1 (de) |
| WO (1) | WO2018233733A1 (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110493526B (zh) * | 2019-09-10 | 2020-11-20 | 北京小米移动软件有限公司 | 基于多摄像模块的图像处理方法、装置、设备及介质 |
| US20230239452A1 (en) * | 2020-06-04 | 2023-07-27 | Advanced Farm Technologies, Inc. | Color stereo camera systems with global shutter synchronization |
| CN112261309B (zh) * | 2020-10-22 | 2022-04-08 | 北京嘀嘀无限科技发展有限公司 | 基于ims摄像头和dms摄像头的拍摄方法及系统 |
| WO2022099482A1 (zh) * | 2020-11-10 | 2022-05-19 | 深圳市大疆创新科技有限公司 | 曝光控制方法、装置、可移动平台及计算机可读存储介质 |
| US12372744B2 (en) | 2021-01-27 | 2025-07-29 | Samsung Electronics Co., Ltd. | Lens assembly and electronic device including the same |
| US11962912B2 (en) * | 2021-06-16 | 2024-04-16 | Aptiv Technologies AG | Object detection via comparison of synchronized pulsed illumination and camera imaging |
| CN115714899A (zh) * | 2021-08-20 | 2023-02-24 | 北京小米移动软件有限公司 | 微距拍摄方法、装置、电子设备和存储介质 |
| US11425304B1 (en) * | 2021-12-06 | 2022-08-23 | Black Sesame Technologies Inc. | Reducing global motion and rolling shutter in a dual camera system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014111814A2 (en) | 2013-01-15 | 2014-07-24 | Mobileye Technologies Limited | Stereo assist with rolling shutters |
| DE112013001647T5 (de) * | 2012-03-23 | 2014-12-18 | Hitachi Automotive Systems, Ltd. | Bildverarbeitungsvorrichtung und Bildverarbeitungsverfahren im Fahrzeug |
| KR101610512B1 (ko) * | 2014-09-23 | 2016-04-07 | 현대자동차주식회사 | 스테레오 카메라 및 그 작동 방법 |
| DE102014220585A1 (de) * | 2014-10-10 | 2016-04-14 | Conti Temic Microelectronic Gmbh | Stereokamera für Fahrzeuge |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2998791B2 (ja) * | 1996-10-31 | 2000-01-11 | 日本電気株式会社 | 三次元構造推定装置 |
| US7599521B2 (en) * | 2004-11-30 | 2009-10-06 | Honda Motor Co., Ltd. | Vehicle vicinity monitoring apparatus |
| JP2011071605A (ja) * | 2009-09-24 | 2011-04-07 | Fujifilm Corp | 立体撮像装置及び立体撮像方法 |
| US8803990B2 (en) * | 2011-01-25 | 2014-08-12 | Aptina Imaging Corporation | Imaging system with multiple sensors for producing high-dynamic-range images |
| DE102012106860A1 (de) * | 2012-07-27 | 2014-02-13 | Jenoptik Robot Gmbh | Vorrichtung und Verfahren zum Identifizieren und Dokumentieren mindestens eines ein Strahlungsfeld durchfahrenden Objektes |
| US20150002734A1 (en) * | 2013-07-01 | 2015-01-01 | Motorola Mobility Llc | Electronic Device with Modulated Light Flash Operation for Rolling Shutter Image Sensor |
| US9185291B1 (en) * | 2013-06-13 | 2015-11-10 | Corephotonics Ltd. | Dual aperture zoom digital camera |
| US20160205378A1 (en) * | 2015-01-08 | 2016-07-14 | Amir Nevet | Multimode depth imaging |
| US20160309135A1 (en) * | 2015-04-20 | 2016-10-20 | Ilia Ovsiannikov | Concurrent rgbz sensor and system |
| CN104918019A (zh) * | 2015-06-16 | 2015-09-16 | 武汉烽火众智数字技术有限责任公司 | 一种能全天候同时看清车牌和车内人员的双目摄像机 |
| KR102384175B1 (ko) * | 2015-07-29 | 2022-04-08 | 주식회사 만도모빌리티솔루션즈 | 차량의 카메라 장치 |
| US10453185B2 (en) * | 2015-11-12 | 2019-10-22 | Aquifi, Inc. | System and method for high dynamic range depth capture using multiple cameras |
| CN106534632B (zh) * | 2016-11-03 | 2019-03-29 | 桂林电子科技大学 | 同步扫描成像系统 |
-
2017
- 2017-06-21 DE DE102017210408.2A patent/DE102017210408A1/de not_active Withdrawn
- 2017-12-05 CN CN201780092285.8A patent/CN110771153B/zh active Active
- 2017-12-05 DE DE112017007452.5T patent/DE112017007452B4/de active Active
- 2017-12-05 US US16/612,477 patent/US11146719B2/en active Active
- 2017-12-05 WO PCT/DE2017/200125 patent/WO2018233733A1/de not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112013001647T5 (de) * | 2012-03-23 | 2014-12-18 | Hitachi Automotive Systems, Ltd. | Bildverarbeitungsvorrichtung und Bildverarbeitungsverfahren im Fahrzeug |
| WO2014111814A2 (en) | 2013-01-15 | 2014-07-24 | Mobileye Technologies Limited | Stereo assist with rolling shutters |
| KR101610512B1 (ko) * | 2014-09-23 | 2016-04-07 | 현대자동차주식회사 | 스테레오 카메라 및 그 작동 방법 |
| DE102014220585A1 (de) * | 2014-10-10 | 2016-04-14 | Conti Temic Microelectronic Gmbh | Stereokamera für Fahrzeuge |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112017007452B4 (de) | 2025-11-13 |
| CN110771153B (zh) | 2022-07-29 |
| CN110771153A (zh) | 2020-02-07 |
| DE102017210408A1 (de) | 2018-12-27 |
| US20200128161A1 (en) | 2020-04-23 |
| US11146719B2 (en) | 2021-10-12 |
| DE112017007452A5 (de) | 2020-04-16 |
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