CN201515466U - Back-up aid system - Google Patents
Back-up aid system Download PDFInfo
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- CN201515466U CN201515466U CN2009202632087U CN200920263208U CN201515466U CN 201515466 U CN201515466 U CN 201515466U CN 2009202632087 U CN2009202632087 U CN 2009202632087U CN 200920263208 U CN200920263208 U CN 200920263208U CN 201515466 U CN201515466 U CN 201515466U
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Abstract
The utility model relates to a back-up aid system, in particular to the back-up aid system which can mechanically identify barriers. The back-up aid system comprises a camera device and an image display device, and also comprises a microprocessor, wherein the microprocessor is used for conducting noise removal, contrast stretch, line detection, edge recognition operation of an image signal acquired by the camera device, and transmitting the processed information to the image display device for controlling the displaying thereof; the camera device comprises a color camera lens and an image reverser which are mutually connected; and the image display device comprises an LCD display screen and an image OSD controller which are mutually connected. Compared with the prior art, the backing aid system not only can display a shot scene behind a vehicle to a driver, but also can indicate the barrier from the barriers and backgrounds which are indistinct or difficult to recognize by edge intensification, thus being beneficial for the driver to better master the condition behind the vehicle and back the vehicle safely.
Description
Technical field
The utility model relates to reversing aid system, specifically is meant a kind of reversing aid system that can carry out Machine Vision Recognition to barrier.
Background technology
Existing reversing aid system with backsight shooting is at automobile tail camera to be installed, when the driver begins to move backward, camera is just taken scene and the transmission behind the car in real time, on display, show at last, make the driver can directly see the situation at car rear, be convenient to reversing.The reversing aid system of this form is simple, but there is following shortcoming: because LCD screen is less, resolution is low, and general and vertical direction formation 20-40 degree angle when camera is installed, if car rear insufficient light, the picture of taking is unclear, show and blur that the driver just is difficult to judge whether some concrete image is barrier.
The utility model content
The problem that the utility model need solve provides a kind of reversing aid system that can discern the image outline of common barrier and the various barriers of outstanding sign.
For addressing the above problem, the technical scheme that the utility model is taked is: a kind of reversing aid system is provided, comprise the cam device and the image display device that are used to gather the car back spectacle, also comprise be used for the picture signal that described cam device collects removed make an uproar, contrast stretches, line detects, edge identification computing and the information that will handle are sent to the microprocessor that image display device is controlled its demonstration, described microprocessor is connected with cam device and image display device.
Concrete, described cam device comprises interconnective colour imagery shot and image reversal device.
Concrete, described image display device comprises interconnective LCD display and image osd controller.
Compared with prior art, the utility model beneficial effect is: reversing aid system described in the utility model not only can be shown to the driver with the car back spectacle that photographs, can also be from the fuzzy or difficult barrier of judging and background, by the accentuated edges mode barrier is identified out, be beneficial to the driver and better grasp situation behind the car, the safety reversing.
Description of drawings
Fig. 1 is that the utility model principle is formed schematic block diagram;
Fig. 2 is microprocessor image processing workflow figure described in the utility model.
Embodiment
Specify for ease of it will be appreciated by those skilled in the art that below in conjunction with drawings and Examples.
As shown in Figure 1, described reversing aid system comprises microprocessor MCU and the cam device, the image display device that connect in microprocessor; Store what image recognition algorithm software of operating system among the described microprocessor MCU; Because the processing of MCU also comprises the computing and the control of audio-video system each side,, do not give unnecessary details here so its program storage that includes also is mounted with the algorithm or the like of the broadcast of various medium.
Described cam device comprises colour imagery shot and image reversal device, because the picture that camera photographs is opposite with picture in kind just, therefore need install the image reversal device additional.The image reversal device is connected by the image digitization optical cable with colour imagery shot.
Described image display device comprises LCD and OSD display controller.Because display result is the strong edge sign demonstration that will superpose on the basis of original image, therefore need install the OSD display controller additional.
Described microprocessor MCU adopts cable for digital communication to be connected with cam device and image display device during concrete enforcement, and unified power supply, unified generating positive and negative voltage are to guarantee that data image signal effectively transmits.
Be illustrated in figure 2 as described microprocessor image processing workflow figure.The method of work of described reversing aid system is as follows:
One,, at first coloured image is become gray level image (two-dimensional matrix) according to each intensity equalization of RGB for requirement of real time; Because described reversing aid system work real-time requires high, if directly handle coloured image, that is to say and handle three-dimensional matrice, compute heavy, often microprocessor does not reach the processing requirements of real-time;
Two, the two dimensional gray image is carried out balanced histogram and stretch, the numerical value of two-dimensional matrix is made amendment according to the probability equalization, make data be distributed in whole matrix to strengthen picture contrast;
Three, utilize median filtering method that each regional numerical value of matrix is carried out the size ordering, select Mesophyticum, remove the noise of image for the central point pixel;
Four, according to the discontinuous variation of pixel, the two-dimensional matrix of entire image is carried out differentiate, promptly utilize Laplacian that whole pixel level or vertical direction are carried out derivative operation, obtain the sharpening image;
Five, utilize the Sobel-Hough operator that the edge is discerned, extracted to image;
In this step, because the front has obtained removing the sharpening image after making an uproar, adopt the outstanding two-dimensional matrix discrete digital variation of Sobel filter neighbor greatly, eliminate mild conversion pixel, both can also can carry out computing to horizontal direction to vertical direction, utilize threshold value to cut apart again, obtain the two-valued function image.Then, whole two-valued function image is carried out the Hough computing, cardinal principle is to judge which bar line segment is constituted by the pixel of maximum logical ones, and then straight line is chosen;
Six, the edge line overstriking that extracts is added color, show with original color image stack back.
The reversing aid system scope of application described in the utility model is extensive, can make full use of existing resource on the car, the family-sized car that more for example has vehicle carried video system and microprocessor, camera, only need by modification microprocessor program, described reversing aid system is integrated mutually with former vehicle carried video system, realize the common pillar class in the image that automatic identification camera gathers or the function of step class barrier, and the outstanding sign of image (for example adding red or flicker) is reminded driver safety reversing by display unit.
Claims (3)
1. reversing aid system, comprise the cam device and the image display device that are used to gather the car back spectacle, it is characterized in that: also comprise be used for the picture signal that described cam device collects removed make an uproar, contrast stretches, line detects, edge identification computing and the information that will handle are sent to the microprocessor that image display device is controlled its demonstration, described microprocessor is connected with cam device and image display device.
2. reversing aid system according to claim 1 is characterized in that: described cam device comprises interconnective colour imagery shot and image reversal device.
3. reversing aid system according to claim 2 is characterized in that: described image display device comprises interconnective LCD display and image osd controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202632087U CN201515466U (en) | 2009-11-20 | 2009-11-20 | Back-up aid system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202632087U CN201515466U (en) | 2009-11-20 | 2009-11-20 | Back-up aid system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201515466U true CN201515466U (en) | 2010-06-23 |
Family
ID=42486877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202632087U Expired - Fee Related CN201515466U (en) | 2009-11-20 | 2009-11-20 | Back-up aid system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201515466U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109544552A (en) * | 2018-12-06 | 2019-03-29 | 合刃科技（深圳）有限公司 | A kind of grating lossless detection method and system |
-
2009
- 2009-11-20 CN CN2009202632087U patent/CN201515466U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109544552A (en) * | 2018-12-06 | 2019-03-29 | 合刃科技（深圳）有限公司 | A kind of grating lossless detection method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20141120 |
|
| EXPY | Termination of patent right or utility model |