CN111768614A - Braking frequency detection system and method based on visual analysis - Google Patents

Braking frequency detection system and method based on visual analysis Download PDF

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Publication number
CN111768614A
CN111768614A CN201911078961.3A CN201911078961A CN111768614A CN 111768614 A CN111768614 A CN 111768614A CN 201911078961 A CN201911078961 A CN 201911078961A CN 111768614 A CN111768614 A CN 111768614A
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Prior art keywords
image
braking frequency
artifact
vehicle
braking
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CN201911078961.3A
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CN111768614B (en
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张晓东
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Shenzhen xinghengtong Equipment Co.,Ltd.
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张晓东
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    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/01Detecting movement of traffic to be counted or controlled
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00Image analysis
    • G06T7/0002Inspection of images, e.g. flaw detection
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/09Arrangements for giving variable traffic instructions
    • G08G1/0962Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0968Systems involving transmission of navigation instructions to the vehicle

Abstract

The invention relates to a braking frequency detection system and method based on visual analysis, wherein the system comprises: the content conversion equipment is arranged on a center console in the vehicle and used for receiving the reference braking frequency and adjusting the braking frequency of the vehicle based on the reference braking frequency; the LED display screen is used for receiving and displaying the braking frequency of the vehicle for the reference of a driver; in the content conversion apparatus, the adjusted braking frequency of the host vehicle is in a positive correlation with the reference braking frequency; and the live-action shooting equipment is used for carrying out live-action shooting on the front of the vehicle so as to obtain and output a plurality of frames of live-action imaging images which are continuous in time, and outputting each frame of live-action imaging image. The brake frequency detection system and method based on visual analysis are timely in detection and reliable in parameters. The vehicle braking frequency for the vehicle driver to refer to can be calculated according to the acquired front vehicle braking frequency, so that the vehicle driver can conveniently acquire driving assistance data.

Description

Braking frequency detection system and method based on visual analysis
Technical Field
The invention relates to the field of brake control, in particular to a brake frequency detection system and method based on visual analysis.
Background
The brake, also called braking, is an operation for stopping or reducing the speed of a running locomotive, vehicle, other transportation means, machine, or the like. The general principle of braking is that a wheel or disk is fixed on the high-speed shaft of the machine, and a brake shoe, belt or disk matched with the wheel or disk is mounted on the machine base, so that the wheel or disk can produce braking torque under the action of external force.
The braking device is a mechanical braking device which can slow down the speed of the vehicle, also known as a speed reducer. Briefly, the method comprises the following steps: the automobile brake pedal is arranged below the steering wheel, and when the brake pedal is stepped on, the brake lever is pressed in a linkage manner and is transmitted to the brake block on the brake drum to clamp the brake wheel disc, so that the automobile is decelerated or stops running. The manual brake of the automobile is arranged beside the gear and connected with a brake lever. Bicycle brakes are also known, which are decelerated by means of a lever brake or a disc brake fixed to the frame.
Disclosure of Invention
In order to solve the technical problems related to the related field, the invention provides a braking frequency detection system based on visual analysis, which can calculate the braking frequency of a vehicle based on the braking frequency of a front vehicle so as to provide driving reference data for a vehicle driver; counting the number of processed images with brake lamps in the multi-frame processed images, and calculating the front vehicle braking frequency based on the number of the processed images with brake lamps and the duration shooting time of the multi-frame processed images.
According to an aspect of the present invention, there is provided a braking frequency detection system based on visual analysis, the system including:
the content conversion equipment is arranged on a center console in the vehicle and used for receiving the reference braking frequency and adjusting the braking frequency of the vehicle based on the reference braking frequency;
the LED display screen is arranged on a center console in the vehicle, is connected with the content conversion equipment and is used for receiving and displaying the braking frequency of the vehicle for the reference of a driver;
in the content conversion apparatus, the adjusted braking frequency of the host vehicle is in a positive correlation with the reference braking frequency;
the real-scene shooting equipment is used for carrying out real-scene shooting on the front of the vehicle so as to obtain and output a plurality of frames of real-scene imaging images which are continuous in time and output each frame of real-scene imaging image;
the arithmetic mean filtering device is connected with the live-action shooting device and used for executing arithmetic mean filtering processing on the live-action imaging image based on the maximum amplitude of the noise in the received live-action imaging image so as to obtain a corresponding arithmetic mean filtering image, wherein the larger the maximum amplitude of the noise is, the larger the amplitude of the arithmetic mean filtering processing on the live-action imaging image is;
a bicubic interpolation device connected to the arithmetic mean filtering device, for receiving the arithmetic mean filtered image, performing bicubic interpolation processing based on a neighborhood of 16 × 16 pixels on the arithmetic mean filtered image based on a resolution of the arithmetic mean filtered image to obtain a bicubic interpolated image, a magnitude of performing the bicubic interpolation processing on the arithmetic mean filtered image being larger the lower the resolution of the arithmetic mean filtered image is;
the artifact removing device is connected with the bicubic interpolation device and used for removing the artifact of the received bicubic interpolation image to obtain an artifact removed image;
the quantity extraction equipment is connected with the artifact removal equipment and is used for receiving the artifact removal image corresponding to each frame of live-action imaging image and counting the quantity of the artifact removal images with brake lamps in the multi-frame artifact removal images respectively corresponding to the multi-frame live-action imaging images;
and the number analysis device is respectively connected with the content conversion device and the number extraction device and is used for calculating the reference braking frequency based on the number of artifact removal images with brake lamps and the duration shooting time of the multi-frame live-action imaging images.
According to another aspect of the present invention, there is also provided a braking frequency detection method based on visual analysis, the method including: a braking frequency detection system based on visual analysis is used to calculate the braking frequency of the host vehicle based on the braking frequency of the host vehicle in front to provide driving reference data for the driver of the vehicle.
The brake frequency detection system and method based on visual analysis are timely in detection and reliable in parameters. The vehicle braking frequency for the vehicle driver to refer to can be calculated according to the acquired front vehicle braking frequency, so that the vehicle driver can conveniently acquire driving assistance data.
It can be seen that the present invention needs to have the following two main points:
(1) calculating the braking frequency of the vehicle based on the braking frequency of the front vehicle so as to provide driving reference data for a vehicle driver;
(2) counting the number of processed images with brake lamps in the multi-frame processed images, and calculating the front vehicle braking frequency based on the number of processed images with brake lamps and the duration shooting time of the multi-frame processed images.
Drawings
Embodiments of the invention will now be described with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural diagram illustrating a braking mechanism applied to a braking frequency detection system based on visual analysis according to an embodiment of the present invention.
Detailed Description
Embodiments of a braking frequency detection system and method based on visual analysis according to the present invention will be described in detail with reference to the accompanying drawings.
Image analysis generally utilizes mathematical models in conjunction with image processing techniques to analyze underlying features and overlying structures to extract information with some intelligence.
The mode recognition and artificial intelligence method is also called scene analysis or image understanding. Since the 60's of the 20 th century, there have been many studies on image analysis, and the development of image analysis techniques for specific problems and applications has gradually moved toward the establishment of general theories. The image analysis is closely related to the research content of image processing, computer graphics and the like, and is mutually crossed and overlapped. But image processing mainly studies image transmission, storage, enhancement and restoration; the method for representing the main points, lines, faces and volumes of computer graphics and the method for displaying visual information; the image analysis focuses on a description method for constructing images, and more particularly, symbols are used for representing various images, rather than calculating the images and carrying out reasoning by using various related knowledge. Image analysis is also germane to research on human vision, where research on certain recognizable modules in human vision mechanisms may contribute to improved computer vision capabilities.
Currently, there is a confusion of getting on the road of the vehicle driver, and the driving skill and the driving habit of the driver are as good as fingers, and the driver can feel relieved, however, the driving skill and the driving habit of the driver of the nearby vehicle and the vehicle condition of the nearby vehicle are unknown, for example, some novices like frequent braking, and are easy to cause discomfort in operation to the following vehicle. How to help the driver of the vehicle to obtain the relevant driving assistance data is one of the technical problems which are not solved at present.
In order to overcome the defects, the invention builds a brake frequency detection system and method based on visual analysis, and can effectively solve the corresponding technical problem.
Fig. 1 is a schematic structural diagram illustrating a braking mechanism applied to a braking frequency detection system based on visual analysis according to an embodiment of the present invention.
The braking frequency detection system based on visual analysis according to the embodiment of the invention comprises:
the content conversion equipment is arranged on a center console in the vehicle and used for receiving the reference braking frequency and adjusting the braking frequency of the vehicle based on the reference braking frequency;
the LED display screen is arranged on a center console in the vehicle, is connected with the content conversion equipment and is used for receiving and displaying the braking frequency of the vehicle for the reference of a driver;
in the content conversion apparatus, the adjusted braking frequency of the host vehicle is in a positive correlation with the reference braking frequency;
the real-scene shooting equipment is used for carrying out real-scene shooting on the front of the vehicle so as to obtain and output a plurality of frames of real-scene imaging images which are continuous in time and output each frame of real-scene imaging image;
the arithmetic mean filtering device is connected with the live-action shooting device and used for executing arithmetic mean filtering processing on the live-action imaging image based on the maximum amplitude of the noise in the received live-action imaging image so as to obtain a corresponding arithmetic mean filtering image, wherein the larger the maximum amplitude of the noise is, the larger the amplitude of the arithmetic mean filtering processing on the live-action imaging image is;
a bicubic interpolation device connected to the arithmetic mean filtering device, for receiving the arithmetic mean filtered image, performing bicubic interpolation processing based on a neighborhood of 16 × 16 pixels on the arithmetic mean filtered image based on a resolution of the arithmetic mean filtered image to obtain a bicubic interpolated image, a magnitude of performing the bicubic interpolation processing on the arithmetic mean filtered image being larger the lower the resolution of the arithmetic mean filtered image is;
the artifact removing device is connected with the bicubic interpolation device and used for removing the artifact of the received bicubic interpolation image to obtain an artifact removed image;
the quantity extraction equipment is connected with the artifact removal equipment and is used for receiving the artifact removal image corresponding to each frame of live-action imaging image and counting the quantity of the artifact removal images with brake lamps in the multi-frame artifact removal images respectively corresponding to the multi-frame live-action imaging images;
and the number analysis device is respectively connected with the content conversion device and the number extraction device and is used for calculating the reference braking frequency based on the number of artifact removal images with brake lamps and the duration shooting time of the multi-frame live-action imaging images.
Next, the detailed structure of the braking frequency detection system based on visual analysis according to the present invention will be further described.
In the braking frequency detection system based on visual analysis:
the unit of the adjusted braking frequency of the vehicle and the unit of the reference braking frequency are the braking times per minute.
The braking frequency detection system based on the visual analysis can further comprise:
the first identification device is connected with the artifact removing device and used for receiving the artifact removing image, and measuring the signal-to-noise ratio of the artifact removing image to obtain and output a corresponding current signal-to-noise ratio.
The braking frequency detection system based on the visual analysis can further comprise:
and the second identification device is connected with the first identification device and used for performing average macro block processing on the artifact-removed image based on the current signal-to-noise ratio to obtain each image macro block, wherein the smaller the current signal-to-noise ratio is, the larger each image macro block obtained by performing average macro block processing on the artifact-removed image is.
The braking frequency detection system based on the visual analysis can further comprise:
and the signal extraction device is connected with the second identification device and used for performing redundancy analysis on each image macro block of the received artifact-removed image to obtain corresponding redundancy, and outputting the image macro block corresponding to the middle value of each redundancy of each image macro block as a target image macro block.
The braking frequency detection system based on the visual analysis can further comprise:
and the parameter acquisition equipment is connected with the signal extraction equipment and used for receiving the target image macro block and performing brightness analysis on the target image macro block to obtain a corresponding representative brightness value.
The braking frequency detection system based on the visual analysis can further comprise:
and the image compensation equipment is respectively connected with the quantity extraction equipment, the signal extraction equipment and the parameter acquisition equipment, and is used for executing brightness lifting operation on each image macro block in the artifact-removed image based on the representative brightness value to obtain each processed block, combining each processed block to obtain a current compensation image corresponding to the artifact-removed image, and replacing the artifact-removed image with the current compensation image to send the current compensation image to the quantity extraction equipment.
In the braking frequency detection system based on visual analysis:
in the signal extraction device, the intermediate value of each redundancy of each image macroblock is the redundancy corresponding to the central sequence number after the respective redundancies of each image macroblock are sorted.
In the braking frequency detection system based on visual analysis:
the image compensation device comprises a compensation execution unit and a combination processing unit, wherein the compensation execution unit is connected with the combination processing unit;
the compensation execution unit is used for executing brightness lifting operation on each image macro block in the artifact-removed image based on the representative brightness value so as to obtain each processed block;
wherein performing a brightness boost operation on each image macroblock in the artifact-removed image based on the representative brightness value comprises: the representative luminance value is inversely proportional to the magnitude of the luminance boost operation performed on each image macroblock in the artifact-removed image.
Meanwhile, in order to overcome the defects, the invention also provides a braking frequency detection method based on visual analysis, which comprises the following steps: a braking frequency detection system based on visual analysis is used to calculate the braking frequency of the host vehicle based on the braking frequency of the host vehicle in front to provide driving reference data for the driver of the vehicle.
In addition, the image compensation apparatus may be implemented using a GPU. The GPU is a display chip capable of supporting T & L (Transform and Lighting) from hardware, and since T & L is an important part in 3D rendering, it is used to calculate the 3D position of a polygon and process dynamic ray effects, also referred to as "geometric processing". A good T & L unit, which can provide fine 3D objects and high-level light special effects; however, in most PCs, most of the operations of T & L are handled by the CPU (that is, software T & L), and because the CPU has many tasks and performs non-3D graphics processing such as memory management and input response in addition to T & L, the performance is greatly reduced during actual operations, and the CPU generally waits for CPU data, and the operation speed of the CPU is far from the requirement of a complicated three-dimensional game. Even if the operating frequency of the CPU exceeds 1GHz or more, it is not greatly helpful because it is a problem in the design of the PC itself, and has no great relationship with the speed of the CPU.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A braking frequency detection system based on visual analysis, comprising:
the content conversion equipment is arranged on a center console in the vehicle and used for receiving the reference braking frequency and adjusting the braking frequency of the vehicle based on the reference braking frequency;
the LED display screen is arranged on a center console in the vehicle, is connected with the content conversion equipment and is used for receiving and displaying the braking frequency of the vehicle for the reference of a driver;
in the content conversion apparatus, the adjusted braking frequency of the host vehicle is in a positive correlation with the reference braking frequency;
the real-scene shooting equipment is used for carrying out real-scene shooting on the front of the vehicle so as to obtain and output a plurality of frames of real-scene imaging images which are continuous in time and output each frame of real-scene imaging image;
the arithmetic mean filtering device is connected with the live-action shooting device and used for executing arithmetic mean filtering processing on the live-action imaging image based on the maximum amplitude of the noise in the received live-action imaging image so as to obtain a corresponding arithmetic mean filtering image, wherein the larger the maximum amplitude of the noise is, the larger the amplitude of the arithmetic mean filtering processing on the live-action imaging image is;
a bicubic interpolation device connected to the arithmetic mean filtering device, for receiving the arithmetic mean filtered image, performing bicubic interpolation processing based on a neighborhood of 16 × 16 pixels on the arithmetic mean filtered image based on a resolution of the arithmetic mean filtered image to obtain a bicubic interpolated image, a magnitude of performing the bicubic interpolation processing on the arithmetic mean filtered image being larger the lower the resolution of the arithmetic mean filtered image is;
the artifact removing device is connected with the bicubic interpolation device and used for removing the artifact of the received bicubic interpolation image to obtain an artifact removed image;
the quantity extraction equipment is connected with the artifact removal equipment and is used for receiving the artifact removal image corresponding to each frame of live-action imaging image and counting the quantity of the artifact removal images with brake lamps in the multi-frame artifact removal images respectively corresponding to the multi-frame live-action imaging images;
and the number analysis device is respectively connected with the content conversion device and the number extraction device and is used for calculating the reference braking frequency based on the number of artifact removal images with brake lamps and the duration shooting time of the multi-frame live-action imaging images.
2. The vision analysis-based braking frequency detection system of claim 1, wherein:
the unit of the adjusted braking frequency of the vehicle and the unit of the reference braking frequency are the braking times per minute.
3. The visual analysis-based braking frequency detection system of claim 2, wherein the system further comprises:
the first identification device is connected with the artifact removing device and used for receiving the artifact removing image, and measuring the signal-to-noise ratio of the artifact removing image to obtain and output a corresponding current signal-to-noise ratio.
4. The visual analysis-based braking frequency detection system of claim 3, wherein the system further comprises:
and the second identification device is connected with the first identification device and used for performing average macro block processing on the artifact-removed image based on the current signal-to-noise ratio to obtain each image macro block, wherein the smaller the current signal-to-noise ratio is, the larger each image macro block obtained by performing average macro block processing on the artifact-removed image is.
5. The visual analysis-based braking frequency detection system of claim 4, wherein the system further comprises:
and the signal extraction device is connected with the second identification device and used for performing redundancy analysis on each image macro block of the received artifact-removed image to obtain corresponding redundancy, and outputting the image macro block corresponding to the middle value of each redundancy of each image macro block as a target image macro block.
6. The visual analysis-based braking frequency detection system of claim 5, wherein the system further comprises:
and the parameter acquisition equipment is connected with the signal extraction equipment and used for receiving the target image macro block and performing brightness analysis on the target image macro block to obtain a corresponding representative brightness value.
7. The visual analysis-based braking frequency detection system of claim 6, wherein the system further comprises:
and the image compensation equipment is respectively connected with the quantity extraction equipment, the signal extraction equipment and the parameter acquisition equipment, and is used for executing brightness lifting operation on each image macro block in the artifact-removed image based on the representative brightness value to obtain each processed block, combining each processed block to obtain a current compensation image corresponding to the artifact-removed image, and replacing the artifact-removed image with the current compensation image to send the current compensation image to the quantity extraction equipment.
8. The vision analysis-based braking frequency detection system of claim 7, wherein:
in the signal extraction device, the intermediate value of each redundancy of each image macroblock is the redundancy corresponding to the central sequence number after the respective redundancies of each image macroblock are sorted.
9. The vision analysis-based braking frequency detection system of claim 8, wherein:
the image compensation device comprises a compensation execution unit and a combination processing unit, wherein the compensation execution unit is connected with the combination processing unit;
the compensation execution unit is used for executing brightness lifting operation on each image macro block in the artifact-removed image based on the representative brightness value so as to obtain each processed block;
wherein performing a brightness boost operation on each image macroblock in the artifact-removed image based on the representative brightness value comprises: the representative luminance value is inversely proportional to the magnitude of the luminance boost operation performed on each image macroblock in the artifact-removed image.
10. A braking frequency detection method based on visual analysis is characterized by comprising the following steps: use of a vision analysis based braking frequency detection system according to any of claims 1-9 to calculate the braking frequency of the host vehicle based on the braking frequency of the preceding vehicle to provide driving reference data for the driver of the vehicle.
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