CN111836006A - Vehicle-mounted streaming media rearview visual display method - Google Patents
Vehicle-mounted streaming media rearview visual display method Download PDFInfo
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- CN111836006A CN111836006A CN201910329028.2A CN201910329028A CN111836006A CN 111836006 A CN111836006 A CN 111836006A CN 201910329028 A CN201910329028 A CN 201910329028A CN 111836006 A CN111836006 A CN 111836006A
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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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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
The invention discloses a vehicle-mounted streaming media rearview visual display method, which comprises the following steps: acquiring a rear-view image, splicing and correcting the rear-view image, and displaying the rear-view image; the invention has the advantages that the camera devices are arranged AT three directions behind the vehicle, the image picture without blind areas is provided, the AT89S51 series single-chip microcomputer is matched, the processing capabilities of image splicing, correction and the like are improved, the image quality is also ensured to be clear, and high-definition vehicle panoramic images can be obtained even AT night with weak light; when the steering wheel of the vehicle rotates, the camera device can also rotate towards the same direction, so that more comprehensive rearview images in the turning direction can be obtained, and unnecessary traffic accidents caused by vision blind areas in the turning direction are avoided; the invention increases the gray scale value comparison and the definition comparison of the pixel points in the process of processing the rear-view image, improves the brightness of the rear-view environment by adopting a light supplementing mode and improves the color quality of the rear-view image.
Description
Technical Field
The invention relates to the technical field of vehicle rearview, in particular to a vehicle-mounted streaming media rearview visual display method.
Background
When looking at an inside rearview mirror, a driver is sometimes shielded from a part of backward vision by objects such as a back row passenger of an automobile, a backseat headrest, a rear car bumper or a horizontal tail wing outside a sports automobile, and the view of the rear vision of the automobile is influenced; when a traditional automobile is designed, a driver can be guaranteed to watch the front view through glass preferentially, meanwhile, the proportion of parts in a cockpit is attractive, and other factors are considered, when the automobile runs on a road without street lamps at night, and when no vehicle or other light sources exist behind the automobile, the rear view of the automobile cannot be watched through a rearview mirror; when a vehicle is driven behind, the strong light of the rear headlights can also influence the judgment of the driver on the direction, distance and shape of the vehicle or other objects in the rear field of view.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a vehicle-mounted streaming media rearview visual display method, which solves the problems of low quality of rearview images, narrow coverage of rearview images, etc. by increasing the number of camera devices and incorporating the color quality comparison into the processing flow of a processor.
In order to achieve the purpose, the technical scheme of the invention is as follows: a vehicle-mounted streaming media rearview visual display method comprises the following steps:
step 1, respectively collecting rear-view images of the right back, the left back and the right back of a vehicle according to the rotation direction of a steering wheel and the orientation of three camera devices adjusted by a rotation angle of the steering wheel;
step 2, the processor carries out rear-view environment light supplement by triggering the light supplement device to start and automatically adjusting the optical parameters of the camera device according to the brightness of the rear-view environment in the step 1;
step 3, when the definition of the back vision images collected by the three camera devices is larger than the preset definition, splicing and distortion correction are carried out on the back vision images in three directions by the processor;
and 4, the processor sends the rear-view images spliced and corrected in the step 3 to a vehicle current-carrying medium for displaying.
Preferably, in the step 2, by detecting a gray scale value of each pixel point of the rear view image, when the detected gray scale value is lower than a preset gray scale value, the light supplementing device is triggered, and the optical parameters of the camera device are automatically adjusted.
Preferably, the light supplement device in step 2 adjusts an optical parameter of the light supplement device by adjusting an input current.
Preferably, in the step 3, the stitching seam of the stitched image is eliminated by a weighted fusion method.
Preferably, the camera device comprises a fisheye camera; the three camera devices are respectively installed in the center of a vehicle trunk cover, below a left brake lamp and below a right brake lamp, and are installed on the electric holder to adjust the direction.
Preferably, the processor is an AT89S51 series single chip microcomputer.
Preferably, the step 3 comprises the following steps:
step 3.1, comparing the definition of the rear-view image with a preset definition by a processor, and judging the sizes of the definition and the preset definition;
step 3.2, if the definition of the rear-view image is larger than the preset definition, splicing and correcting the three rear-view images by the processor;
and 3.3, if the definition of the rear-view image is smaller than the preset definition, the processor sends a re-recording instruction to the camera device with lower definition, and simultaneously reminds the driver through the vehicle-mounted streaming media.
Preferably, said step 3.2 comprises the steps of:
step 3.2.1, splicing the repeated parts of the three rear-view images by a processor to obtain a distorted image;
and 3.2.2, the processor corrects the distortion of the distorted image spliced in the step 3.2.1 by using the vehicle speed, the acceleration and the corner parameters acquired by the vehicle ADAS system and by using a model which the user wants to start, so as to obtain the real rearview image.
In conclusion, the beneficial effects of the invention are as follows:
(1) the camera devices are arranged in three directions behind the vehicle, so that a non-blind-area image is provided, the processing capabilities of image splicing, correction and the like are improved, the image quality is also ensured to be clear by matching with an AT89S51 series single chip microcomputer, and a high-definition vehicle panoramic image can be obtained even AT night with weak light;
(1) when the steering wheel of the vehicle rotates, the camera device can also rotate towards the same direction, so that more comprehensive rearview images in the turning direction can be obtained, and unnecessary traffic accidents caused by vision blind areas in the turning direction are avoided;
(2) the invention increases the gray scale value comparison and the definition comparison of the pixel points in the process of processing the rear-view image, improves the brightness of the rear-view environment by adopting a light supplementing mode and improves the color quality of the rear-view image.
Drawings
Fig. 1 is a flowchart illustrating a method for displaying a rear-view visual display of a vehicle-mounted streaming media according to the present invention.
Detailed Description
The embodiments of the present invention are further described below with reference to the drawings.
Referring to fig. 1, a method for displaying a rear view of a vehicle-mounted streaming media includes the following steps:
step 1, a vehicle respectively collects rear-view images of the right rear, the left rear and the right rear of the vehicle according to the rotating direction and the orientation of three camera devices adjusted by a rotating angle of a steering wheel, when the vehicle turns to the right, the three camera devices all turn to the right, when the vehicle turns to the left, the three camera devices all turn to the left, and when the vehicle moves straight, the three camera devices all are in a middle position, so that the vehicle can collect more visual images of the rear in the steering direction, and the visual blind area in the steering direction is avoided;
step 2, the processor carries out light supplement on the rear-view environment by triggering a light supplement device to start and automatically adjusting optical parameters of the camera device according to the brightness of the rear-view environment in the step 1, wherein the light supplement device adjusts the optical parameters of the light supplement device by adjusting input current so as to adjust the ambient brightness, and the camera device realizes the adjustment of the brightness by changing the size of an aperture;
step 3, when the definition of the back vision images acquired by the three camera devices is larger than the preset definition, the processor splices and distorts and corrects the back vision images in three directions, so that the back vision image of the vehicle with high definition in a 3D panorama is obtained, a driver can know the situation behind the vehicle conveniently, and a basis is provided for realizing automatic driving and automatic parking;
and 4, the processor sends the rear-view image spliced and corrected in the step 3 to a vehicle current-carrying medium for displaying, so that a driver can obtain the vehicle rear-view image more intuitively.
Preferably, in the step 2, by detecting a gray-scale value of each pixel point of the rear-view image, when the detected gray-scale value is lower than a preset gray-scale value, the light supplementing device is triggered, optical parameters of the camera device are automatically adjusted, and the brightness of the rear-view environment is improved, so that the camera device obtains the rear-view image of the vehicle with higher quality and fuller color.
Preferably, in the step 3, the splicing seam of the spliced images is eliminated by adopting a weighted fusion method, so that the defects of influence on visual effect, such as black lines and the like, can not occur after the three rear-view images are spliced.
Preferably, the camera device comprises a fisheye camera; the three camera devices are respectively installed in the center of a vehicle trunk cover, below a left brake lamp and below a right brake lamp, and are installed on the electric holder to adjust the direction.
Preferably, the processor is an AT89S51 series single chip microcomputer.
Preferably, the step 3 comprises the following steps:
step 3.1, comparing the definition of the rear-view image with a preset definition by a processor, and judging the sizes of the definition and the preset definition;
step 3.2, if the definition of the rear-view image is larger than the preset definition, splicing and correcting the three rear-view images by the processor;
and 3.3, if the definition of the rear-view image is smaller than the preset definition, the processor sends a re-recording instruction to the camera device with lower definition, and simultaneously reminds the driver through the vehicle-mounted streaming media.
Preferably, said step 3.2 comprises the steps of:
step 3.2.1, splicing the repeated parts of the three rear-view images by a processor to obtain a distorted image;
and 3.2.2, the processor corrects the distortion of the distorted image spliced in the step 3.2.1 by using the vehicle speed, the acceleration and the corner parameters acquired by the vehicle ADAS system and by using a model which the user wants to start, so as to obtain the real rearview image.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification, or any direct or indirect application attached to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A vehicle-mounted streaming media rearview visual display method is characterized by comprising the following steps:
step 1, respectively collecting rear-view images of the right back, the left back and the right back of a vehicle according to the rotation direction of a steering wheel and the orientation of three camera devices adjusted by a rotation angle of the steering wheel;
step 2, the processor carries out rear-view environment light supplement by triggering the light supplement device to start and automatically adjusting the optical parameters of the camera device according to the brightness of the rear-view environment in the step 1;
step 3, when the definition of the back vision images collected by the three camera devices is larger than the preset definition, splicing and distortion correction are carried out on the back vision images in three directions by the processor;
and 4, the processor sends the rear-view images spliced and corrected in the step 3 to a vehicle current-carrying medium for displaying.
2. The vehicle-mounted streaming media rearview visual display method according to claim 1, wherein the method comprises the following steps: and in the step 2, by detecting the gray scale value of each pixel point of the rear-view image, when the detected gray scale value is lower than a preset gray scale value, triggering the light supplementing device and automatically adjusting the optical parameters of the camera device.
3. The vehicle-mounted streaming media rearview visual display method according to claim 2, wherein the method comprises the following steps: and the light supplementing device in the step 2 adjusts optical parameters of the light supplementing device by adjusting input current.
4. The vehicle-mounted streaming media rearview visual display method according to claim 1, wherein the method comprises the following steps: and 3, eliminating the splicing seams of the spliced images by adopting a weighted fusion method.
5. The vehicle-mounted streaming media rearview visual display method according to claim 1, wherein the method comprises the following steps: the camera device comprises a fisheye camera; the three camera devices are respectively installed in the center of a vehicle trunk cover, below a left brake lamp and below a right brake lamp, and are installed on the electric holder to adjust the direction.
6. The vehicle-mounted streaming media rearview visual display method according to claim 1, wherein the method comprises the following steps: the processor is an AT89S51 series single chip microcomputer.
7. The vehicle-mounted streaming media rearview visual display method according to claim 1, wherein the method comprises the following steps: the step 3 comprises the following steps:
step 3.1, comparing the definition of the rear-view image with a preset definition by a processor, and judging the sizes of the definition and the preset definition;
step 3.2, if the definition of the rear-view image is larger than the preset definition, splicing and correcting the three rear-view images by the processor;
and 3.3, if the definition of the rear-view image is smaller than the preset definition, the processor sends a re-recording instruction to the camera device with lower definition, and simultaneously reminds the driver through the vehicle-mounted streaming media.
8. The vehicle-mounted streaming media rearview visual display method according to claim 7, wherein the method comprises the following steps: the step 3.2 comprises the following steps:
step 3.2.1, splicing the repeated parts of the three rear-view images by a processor to obtain a distorted image;
and 3.2.2, the processor corrects the distortion of the distorted image spliced in the step 3.2.1 by using the vehicle speed, the acceleration and the corner parameters acquired by the vehicle ADAS system and by using a model which the user wants to start, so as to obtain the real rearview image.
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| CN201910329028.2A CN111836006A (en) | 2019-04-23 | 2019-04-23 | Vehicle-mounted streaming media rearview visual display method |
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| CN201910329028.2A CN111836006A (en) | 2019-04-23 | 2019-04-23 | Vehicle-mounted streaming media rearview visual display method |
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Cited By (1)
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| CN114285999A (en) * | 2021-12-24 | 2022-04-05 | 深圳市人机共识科技有限公司 | Image generation method, device, electronic apparatus, and medium for on-site survey |
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Application publication date: 20201027 |
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