CN110650305A - Method for rapidly processing reversing image by intelligent rearview mirror - Google Patents
Method for rapidly processing reversing image by intelligent rearview mirror Download PDFInfo
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- CN110650305A CN110650305A CN201910953123.XA CN201910953123A CN110650305A CN 110650305 A CN110650305 A CN 110650305A CN 201910953123 A CN201910953123 A CN 201910953123A CN 110650305 A CN110650305 A CN 110650305A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/015—High-definition television systems
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- 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
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- 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
- B60R2300/10—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of camera system used
- B60R2300/105—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of camera system used using multiple cameras
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- 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
- B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
- B60R2300/8066—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for monitoring rearward traffic
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a method for quickly processing a reversing image by an intelligent rearview mirror, which executes an image processing process in a U-Boot, wherein the image processing process comprises the following steps: s1, the rear-view camera converts video image information behind the vehicle into an analog video signal and transmits the analog video signal to the high-definition decoding chip, and the high-definition decoding chip decodes the analog video signal into a digital video signal and then inputs the digital video signal into the CSI video processing module of the main control chip through the CSI interface; and S2, the right-view camera converts the video image information at the rear right of the vehicle into an analog video signal and inputs the analog video signal into the TVD video processing module of the main control chip through the TVIN interface. The method has the advantages that the reversing image function is operated in the bootstrap U-Boot, the camera controller is started to receive image data when the U-Boot is started, then the image data is transmitted to the display module of the system chip, the reversing image function is operated at the earliest time point, the waiting time of a vehicle owner is reduced, and the user experience is improved.
Description
Technical Field
The invention relates to the technical field of auxiliary driving, in particular to a method for quickly processing a reversing image by an intelligent rearview mirror.
Background
With the continuous and high-speed increase of the economy in China, the automobile industry is rapidly developed, the number of automobiles in China is continuously increased, and the number of automobiles in large and medium-sized cities, even small cities and rural areas is rapidly increased. However, the automobile brings great convenience to people and also brings many problems. Among them, various traffic accidents caused by backing up a car tend to increase year by year. The early radar anti-collision device for backing a car can detect obstacles in a certain distance range behind the car, so that an alarm is given out, and then the alarm is developed to be in a sectional mode according to the distance. By using the radar collision-proof system, the driver can not visually see the view behind the vehicle. With the improvement of the requirements of people on the automobile auxiliary driving system, the requirements on the backing auxiliary system are higher and higher. Aiming at the situation, the intelligent rearview mirror supporting the reversing image function is produced and is popular in the market, and the market acceptance is high. However, the intelligent rearview mirror basically adopts an Android system, the system is started for a long time, and the function of displaying the reversing image can be supported only after the system kernel is started. Therefore, when a vehicle owner is in a reverse gear state after the vehicle is ignited, the vehicle owner often needs to wait for more than 5 seconds before a reverse image appears, the experience is poor, and the reverse safety is greatly reduced.
Disclosure of Invention
In order to overcome the defect that the processing of the reversing image by the intelligent rearview mirror is too slow in the prior art, the invention provides a method for rapidly processing the reversing image by the intelligent rearview mirror, which is realized by the following technical scheme.
A method for rapidly processing a reversing image by an intelligent rearview mirror executes an image processing process in a U-Boot, wherein the image processing process comprises the following steps: s1, the rear-view camera converts video image information behind the vehicle into an analog video signal and transmits the analog video signal to the high-definition decoding chip, and the high-definition decoding chip decodes the analog video signal into a digital video signal and then inputs the digital video signal into the CSI video processing module of the main control chip through the CSI interface; s2, the right-view camera converts the video image information of the rear right of the vehicle into an analog video signal and inputs the analog video signal into the TVD video processing module of the main control chip through the TVIN interface; and S3, the CSI video processing module and the TVD video processing module respectively process the corresponding video image signals and output the processed video image signals to the display unit for video image display.
Further, before S1, the method further includes the following steps: a, judging whether the level of a backing pin is a high level after the U-Boot is started, and if so, executing an image processing process; if not, normally starting the U-Boot and guiding the system kernel to start.
Further, after the U-Boot is normally started and the system kernel is guided to be started, the system kernel monitors whether the level of a backing pin is high level or not in the starting process and before the system application does not have the backing display processing capacity, and if yes, the system is reset and restarted; if not, the system kernel continues to start and load Android system resources to display the starting animation, when the starting of the CameraServer service is completed, the kernel is informed of the reversing event triggered by the reversing detection module, the system does not need to be reset to the U-Boot for processing, and the system application has the capability of completing the reversing display processing.
Further, after S3, the method further includes the following steps: b, the U-Boot continuously monitors whether the level of the backing pin is high level, if so, an image processing process is executed; if not, normally starting the U-Boot and guiding the system kernel to start.
The invention has the beneficial effects that: the method comprises the steps of operating a car backing image function in a bootstrap program U-Boot, starting a camera controller to receive image data when the U-Boot is started, transmitting the image data to a display module of a system chip, and operating the car backing image function at the earliest time point, so that the waiting time of a car owner is reduced, and the user experience is improved.
Drawings
Fig. 1 is a video image processing flow diagram of the present invention.
FIG. 2 is a logic judgment diagram of the U-Boot of the present invention.
Fig. 3 is a specific flowchart of the U-Boot executing the image processing process according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the prior art, the intelligent rearview mirrors in the market are based on an android system and all have a reversing image function, and after the running of the function is finished by a system bootstrap program U-Boot, the U-Boot bootstrap system initializes a camera controller and a display module and then can run the reversing image function.
Compared with the prior art, the method and the device run the reversing image function in the bootstrap U-Boot, start the camera controller in the U-Boot to receive the image data, then transmit the image data to the display module of the system chip, and run the reversing image function at the earliest time point, thereby reducing the waiting time of the car owner and improving the user experience.
The invention aims to provide a method for realizing rapid reversing image display by utilizing a U-Boot based on an automobile rearview mirror, which can shorten the time from shutdown to reversing image display of a system to the maximum extent and improve the response speed.
A method for rapidly processing a reversing image by an intelligent rearview mirror is characterized in that the following image processing processes are executed in a U-Boot:
the video image processing flow is as shown in fig. 1, a rear-view digital camera is installed at the tail of an automobile, acquired video image information behind the automobile is converted into an analog signal, the conversion process is converted by a camera module, and the converted analog signal is transmitted to a high-definition decoding chip. The high-definition decoding chip restores the analog signals into BT656 format digital video signals, and then inputs the digital video signals into the main control CSI video processing module through the CSI interface. The right-view camera is arranged on the right outer rear-view mirror of the vehicle, video image information (analog video signals) at the right rear of the vehicle is acquired through the standard NTSC camera, and the output CVBS signals are input into the main control TVD video processing module through the TVIN interface. After the CSI video processing module and the TVD video processing module complete the processing of the corresponding video image signal, the processed video image signal is output to the display unit for video image display.
After the video image processing flow is analyzed, a software logic flow of the rapid reversing system is designed according to the video image processing flow.
The software logic flow of the rapid reversing system is shown in fig. 2, after the U-Boot is started, whether the level of a reversing pin is high level is judged, and if yes, a reversing image processing process is executed; if not, normally starting the U-Boot and guiding the system kernel to start. And monitoring whether the level of a backing pin is high level or not by a system kernel in the starting process and before the system application does not have the backing display processing capacity, resetting and restarting the system if the level of the backing pin is high level, and executing the backing image processing process if the level of the backing pin is still high level after the U-Boot is started. If not, the system kernel continues to start and load Android system resources to display the starting animation, the system application has the backing display processing capacity when the CameraServer service is started, the kernel backing detection module is informed that a backing event triggered from then on does not need to be processed in the U-Boot by resetting the system, the system directly completes the backing display processing, and then the whole system is started.
In a specific embodiment, a specific flow of the U-Boot executing the process of processing the reverse image is shown in fig. 3, after the U-Boot is started, whether a reverse event exists is detected, if so, system reverse setting information is immediately obtained, if the system reverse setting information includes a right-view camera and whether the system of the right-view camera is NTSC or PAL, and a specific area of image display, then a CSI controller is initialized to obtain image data of the camera, then whether the right-view camera exists is judged, if so, a TVD controller is continuously initialized to receive a CVBS signal of the right-view camera, image data of the right-view camera is obtained, finally, corresponding reverse warning lines are superimposed and sent to a display module together, and the system kernel is continuously started until the system is started until no reverse signal is detected.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A method for rapidly processing a reversing image by an intelligent rearview mirror is characterized in that an image processing process is executed in a U-Boot, and the image processing process comprises the following steps:
s1, the rear-view camera converts video image information behind the vehicle into an analog video signal and transmits the analog video signal to the high-definition decoding chip, and the high-definition decoding chip decodes the analog video signal into a digital video signal and then inputs the digital video signal into the CSI video processing module of the main control chip through the CSI interface;
s2, the right-view camera converts the video image information of the rear right of the vehicle into an analog video signal and inputs the analog video signal into the TVD video processing module of the main control chip through the TVIN interface;
and S3, the CSI video processing module and the TVD video processing module respectively process the corresponding video image signals and output the processed video image signals to the display unit for video image display.
2. The method for processing reverse images rapidly by using intelligent rearview mirrors as claimed in claim 1, wherein the method further comprises the following steps before S1:
a, judging whether the level of a backing pin is a high level after the U-Boot is started, and if so, executing an image processing process; if not, normally starting the U-Boot and guiding the system kernel to start.
3. The method for rapidly processing the reversing image by the intelligent rearview mirror according to claim 2, wherein after the U-Boot is normally started and the system kernel is guided to be started, the system kernel monitors whether the level of a reversing pin is high level or not in the starting process and before the system application does not have reversing display processing capacity, and if yes, the system is reset and restarted; if not, the system kernel continues to start and load Android system resources to display the starting animation, when the Camera Server is started, the kernel is informed of a reversing event triggered by the kernel reversing detection module, the system does not need to be reset to the U-Boot for processing, and the system application has the capability of finishing reversing display processing.
4. The method for processing reverse images rapidly by using intelligent rearview mirrors according to claim 1, wherein the method further comprises the following steps after S3:
b, the U-Boot continuously monitors whether the level of the backing pin is high level, if so, an image processing process is executed; if not, normally starting the U-Boot and guiding the system kernel to start.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910953123.XA CN110650305A (en) | 2019-10-08 | 2019-10-08 | Method for rapidly processing reversing image by intelligent rearview mirror |
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| CN201910953123.XA CN110650305A (en) | 2019-10-08 | 2019-10-08 | Method for rapidly processing reversing image by intelligent rearview mirror |
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Application publication date: 20200103 |