CN104575097A - Parking space identification method and device by using laser light knife as auxiliary light source - Google Patents
Parking space identification method and device by using laser light knife as auxiliary light source Download PDFInfo
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- CN104575097A CN104575097A CN201510002719.3A CN201510002719A CN104575097A CN 104575097 A CN104575097 A CN 104575097A CN 201510002719 A CN201510002719 A CN 201510002719A CN 104575097 A CN104575097 A CN 104575097A
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Abstract
The invention provides a parking space identification method and device by using a laser light knife as an auxiliary light source. The device is composed of the laser light knife, a camera, a computer and display equipment. When detection is needed, the computer gives out a control instruction first, the laser light knife is used for emitting a fan beam, and the fan beam is projected to a whole row of parking spaces to be detected to form a straight line beam which penetrates through the whole row of parking spaces transversely; the camera is used for collecting the beam images formed by the laser light knife on all the parking spaces, if one image is a section of straight line, it means that the corresponding parking space is vacant, and if the image is a section of arc placed above the straight line, it means that the corresponding parking space is occupied. The parking space identification device can be used for detecting one row of parking spaces, the image processing algorithm is simple and reliable, meanwhile, the requirement for lighting conditions is lowered, and normal detection can still be conducted even in an all-black underground parking garage.
Description
Technical field
The invention belongs to location recognition technical field, particularly a kind of take laser light knife as parking stall recognition methods and the device of secondary light source.
Background technology
The automatic identification of parking lot empty parking space can improve parking lot management efficiency, and existing and multiple empty parking space recognition methods is at present applied, and conventional method has ultrasonic ranging method and pattern-recognition method.Ultrasonic ranging method is above each parking stall, install a ultrasonic ranging probe, and whether park cars under judging probe by measuring distance, the method is simple and reliable, and shortcoming installs ultrasonic probe above each parking stall of requirement, and equipment is many.Pattern-recognition method takes image by camera, carrying out interpretation by Digital Image Processing is empty parking space, the method can set multiple parking stall by a camera, and shortcoming is image processing algorithm more complicated, goes back the illumination condition that demand fulfillment is certain simultaneously.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of take laser light knife as parking stall recognition methods and the device of secondary light source, using laser light knife as secondary light source, require low to illumination condition, based on simple image processing process, can identify whether multiple parking stall is empty simultaneously.
To achieve these goals, the technical solution used in the present invention is:
Take laser light knife as a parking stall recognition methods for secondary light source, comprise the steps:
Utilize laser light knife to launch fan beam, this beam projection forms the straight line that is traversed whole row parking stall on whole row parking stall to be measured;
Utilize the light image that laser light knife described in camera collection is formed in each parking stall, if the image formed is one section of straight line, then illustrate that parking stall is empty; If the image formed is one section of camber line being positioned at above straight line, then illustrate that there is car parking stall.
Described cam lens installs a narrow band pass filter, only allows the light identical with laser light knife wavelength to pass through.
Described laser light knife and camera are all connected the computing machine with display device, computing machine sends control command, and laser light knife is lighted, and then controls camera collection image, image passes to computing machine to carry out judging whether each parking stall has car, and testing result display on the display device the most at last.
Invention also provides a kind of take laser light knife as the parking stall identification equipment of secondary light source, comprising:
Be arranged at the laser light knife directly over parking stall, laser light knife launches fan beam, is projeced on whole row parking stall to be measured and forms the straight line that is traversed whole row parking stall;
Be arranged at the camera of oblique upper, parking stall, gather the light image that described laser light knife is formed in each parking stall;
Connect the computing machine of described camera and laser light knife, computing machine controls lighting of laser light knife, and whether receive the collection image of described camera, be that sky judges to parking stall simultaneously;
Connect the display device of described computing machine, judged result is shown.
Described display device can be installed in garage port or duty room.
Compared with prior art, the invention has the beneficial effects as follows:
1, one group of equipment can detect a row parking stall.
2, image processing algorithm is simple and reliable.
3, adopt laser light knife to combine with narrow-band-filter, reduce illumination condition requirement, even if also can normally detect in entirely black underground parking.
Accompanying drawing explanation
Fig. 1 is the theory of constitution block diagram of the inventive method.
Fig. 2 is laser light knife and camera installation site schematic diagram.
Fig. 3 is the image schematic diagram of camera picked-up.
Fig. 4 is another kind of laser light knife and camera installation site schematic diagram, and camera adopts wide-angle lens, and a camera can detect two row parking stalls simultaneously.
Embodiment
Embodiments of the present invention are described in detail below in conjunction with drawings and Examples.
As shown in Figure 1, stall recognition device is made up of laser light knife 1, camera 2, computing machine 3 and display device 4.The power supply of laser light knife 1 can be controlled to open or close by computing machine 2.
Laser light knife 1 is a LASER Light Source of launching fan beam, as shown in Figure 2, laser light knife 1 is arranged on above row parking stall to be detected, open parking ground needs to arrange mounting bracket, indoor or underground parking can be directly installed on garage ceiling, the light source that laser light knife 1 is launched forms straight line on ground, and this straight line traverses a row parking stall to be detected.
A narrow band pass filter installed by camera 2 camera lens, only allows the light identical with finishing tool wavelength to pass through.As shown in Figure 2, camera 2 is arranged on the oblique upper of a row parking stall to be detected, and open parking ground needs to arrange mounting bracket, and indoor or underground parking can be directly installed on garage ceiling, and finishing tool is in camera visual field at the light that ground is formed.
Computing machine 3 and display device 4 are arranged in garage port or duty room, when needing to detect, first send control command by computing machine 3, laser light knife 1 is lighted; Then control camera 2 and gather image; Image passes in computing machine 3 and processes, and judges whether each parking stall has car; Finally testing result is presented on display device 4.Display device 4 is graphoscope, intuitively shows the full situation of sky of each parking stall with image mode.
Embodiment 1
As shown in Figure 1, stall recognition device is made up of laser light knife 1, camera 2, computing machine 3 and display device 4.Laser light knife 1 power supply can be controlled to open or close by computing machine 3.
Laser light knife 1 is a LASER Light Source of launching fan beam, and as shown in Figure 2, laser light knife 1 is arranged on above row parking stall to be detected on garage ceiling, and finishing tool forms straight line on ground, and this straight line traverses a row parking stall to be detected.
A narrow band pass filter installed by camera 2 camera lens, only allows the light identical with finishing tool wavelength to pass through.As shown in Figure 2, camera 2 is arranged on garage, the oblique upper ceiling of a row parking stall to be detected, and finishing tool is in camera 2 visual field at the light that ground is formed.
Computing machine 3 and display device 4 are arranged in garage port or duty room, when needing to detect, first send control command by computing machine 3, finishing tool is lighted; Then control camera 2 and gather image; Image passes in computing machine 3 and processes, and judges whether each parking stall has car; Finally testing result is presented on display device 4.Display device 4 is graphoscope, intuitively shows the full situation of sky of each parking stall with image mode.
Embodiment 2
As shown in Figure 1, stall recognition device is made up of laser light knife 1, camera 2, computing machine 3 and display device 4.Laser light knife 1 power supply can be controlled to open or close by computing machine 3.
Laser light knife 1 is a LASER Light Source of launching fan beam, and as shown in Figure 4, each is arranged above parking stall to be detected and installs a laser light knife 1, and finishing tool forms straight line on ground, and this straight line traverses a row parking stall to be detected.
A narrow band pass filter installed by camera 2 camera lens, only allows the light identical with finishing tool wavelength to pass through.As shown in Figure 4, camera 2 is arranged on above the passageway in the middle of two row parking stalls to be detected, and camera 2 adopts wide-angle lens, makes adjacent two finishing tools all be in camera 2 visual field at the light that ground is formed, a camera 2 grams of detection simultaneously two row parking stalls.
Computing machine 3 and display device 4 are arranged in garage port or duty room, when needing to detect, first send control command by computing machine 3, finishing tool is lighted; Then control camera 2 and gather image; Image passes in computing machine 3 and processes, and judges whether each parking stall has car; Finally testing result is presented on display device 4.Display device 4 is graphoscope, intuitively shows the full situation of sky of each parking stall with image mode.
Claims (6)
1. be a parking stall recognition methods for secondary light source with laser light knife, it is characterized in that, comprise the steps:
Utilize laser light knife to launch fan beam, this beam projection forms the straight line that is traversed whole row parking stall on whole row parking stall to be measured;
Utilize the light image that laser light knife described in camera collection is formed in each parking stall, if the image formed is one section of straight line, then illustrate that parking stall is empty; If the image formed is one section of camber line being positioned at above straight line, then illustrate that there is car parking stall.
2. be the parking stall recognition methods of secondary light source according to claim 1 with laser light knife, it is characterized in that, described cam lens installs a narrow band pass filter, only allow the light identical with laser light knife wavelength to pass through.
3. be the parking stall recognition methods of secondary light source with laser light knife according to claim 1 or 2, it is characterized in that, described laser light knife and camera are all connected the computing machine with display device, computing machine sends control command, laser light knife is lighted, then control camera collection image, image passes to computing machine to carry out judging whether each parking stall has car, and testing result display on the display device the most at last.
4. be a parking stall identification equipment for secondary light source with laser light knife, it is characterized in that, comprising:
Be arranged at the laser light knife directly over parking stall, laser light knife launches fan beam, is projeced on whole row parking stall to be measured and forms the straight line that is traversed whole row parking stall;
Be arranged at the camera of oblique upper, parking stall, gather the light image that described laser light knife is formed in each parking stall;
Connect the computing machine of described camera and laser light knife, computing machine controls lighting of laser light knife, and whether receive the collection image of described camera, be that sky judges to parking stall simultaneously;
Connect the display device of described computing machine, judged result is shown.
5. be the parking stall identification equipment of secondary light source according to claim 4 with laser light knife, it is characterized in that, described cam lens installs a narrow band pass filter, only allow the light identical with laser light knife wavelength to pass through.
6. be the parking stall identification equipment of secondary light source with laser light knife according to claim 4 or 5, it is characterized in that, described display device is installed in garage port or duty room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510002719.3A CN104575097B (en) | 2015-01-05 | 2015-01-05 | Parking space identification method and device by using laser light knife as auxiliary light source |
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| CN201510002719.3A CN104575097B (en) | 2015-01-05 | 2015-01-05 | Parking space identification method and device by using laser light knife as auxiliary light source |
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| CN104575097A true CN104575097A (en) | 2015-04-29 |
| CN104575097B CN104575097B (en) | 2017-01-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105513410A (en) * | 2015-11-25 | 2016-04-20 | 成都臻识科技发展有限公司 | Parking stall identification method and apparatus based on invisible structured light projection |
| CN105551296A (en) * | 2016-01-12 | 2016-05-04 | 浙江大学 | Multifunctional ultrasonic detector for detecting and displaying multiple parking stalls and detection system thereof |
| CN107221190A (en) * | 2017-05-27 | 2017-09-29 | 苏州互真创智能科技有限公司 | A kind of parking management system |
| CN109872558A (en) * | 2017-12-04 | 2019-06-11 | 广州市捷众智能科技有限公司 | A kind of indoor parking stall state-detection method based on Cross hair laser projection |
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| CN102034087A (en) * | 2009-10-01 | 2011-04-27 | 卡波施交通公司 | Devices and methods for classifying vehicles |
| CN102722985A (en) * | 2012-06-28 | 2012-10-10 | 田果成 | Laser video vehicle detection system |
| CN202976511U (en) * | 2012-11-02 | 2013-06-05 | 陈雪娜 | Parking lot parking space vacancy detection management system based on light induction |
| CN203366542U (en) * | 2013-08-02 | 2013-12-25 | 裴华飏 | Multi-parking space laser detection device |
| US20140232562A1 (en) * | 2010-11-09 | 2014-08-21 | International Business Machines Corporation | Smart spacing allocation |
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2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034087A (en) * | 2009-10-01 | 2011-04-27 | 卡波施交通公司 | Devices and methods for classifying vehicles |
| US20140232562A1 (en) * | 2010-11-09 | 2014-08-21 | International Business Machines Corporation | Smart spacing allocation |
| CN102722985A (en) * | 2012-06-28 | 2012-10-10 | 田果成 | Laser video vehicle detection system |
| CN202976511U (en) * | 2012-11-02 | 2013-06-05 | 陈雪娜 | Parking lot parking space vacancy detection management system based on light induction |
| CN203366542U (en) * | 2013-08-02 | 2013-12-25 | 裴华飏 | Multi-parking space laser detection device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105513410A (en) * | 2015-11-25 | 2016-04-20 | 成都臻识科技发展有限公司 | Parking stall identification method and apparatus based on invisible structured light projection |
| CN105513410B (en) * | 2015-11-25 | 2018-04-06 | 成都臻识科技发展有限公司 | A kind of parking stall recognition methods and device based on imperceptible structured light projection |
| CN105551296A (en) * | 2016-01-12 | 2016-05-04 | 浙江大学 | Multifunctional ultrasonic detector for detecting and displaying multiple parking stalls and detection system thereof |
| CN107221190A (en) * | 2017-05-27 | 2017-09-29 | 苏州互真创智能科技有限公司 | A kind of parking management system |
| CN109872558A (en) * | 2017-12-04 | 2019-06-11 | 广州市捷众智能科技有限公司 | A kind of indoor parking stall state-detection method based on Cross hair laser projection |
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| Publication number | Publication date |
|---|---|
| CN104575097B (en) | 2017-01-11 |
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