CN101441073A - Apparatus and method for detecting vehicle distance - Google Patents
Apparatus and method for detecting vehicle distance Download PDFInfo
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- CN101441073A CN101441073A CNA2007100316061A CN200710031606A CN101441073A CN 101441073 A CN101441073 A CN 101441073A CN A2007100316061 A CNA2007100316061 A CN A2007100316061A CN 200710031606 A CN200710031606 A CN 200710031606A CN 101441073 A CN101441073 A CN 101441073A
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Abstract
The invention discloses a device and a method for detecting vehicle distance. The vehicle distance detecting device at least includes a database unit, a shooting unit, a treatment unit and a caution module, wherein the database unit records at least a group of vehicle image data, after the shooting unit shoots image of front vehicle, the image is transmitted to the treatment unit to carry image cutting treatment, by comparing the cut image and the vehicle image data in the database unit, distance to the front vehicle is judged. If the distance is too close, a display unit or a sound unit or both in the caution module warn, thereby keeping safely distance to the front vehicle.
Description
[technical field]
The present invention is a kind of detecting vehicle distance apparatus and method, particularly relevant for utilizing a photographing module mode of comparing, reaches the effect of detecting distance.
[background technology]
See also Fig. 1, be existing laser detecting vehicle distance device.This laser detecting vehicle distance device 1 comprises a processing unit 11, a transmitter unit 12, a receiving element 13 and an alarm module 14 at least.In this figure, this laser detecting vehicle distance device 1 is launched a laser 16 by transmitter unit 12, when laser 16 runs into obstacle object 18, promptly by 18 reflections of obstacle object, produce reflected light 17, and the receiving element 13 in laser detecting vehicle distance device 1 receives, and the information of this reflected light 17 is back to processing unit 11, again by the distance between processing unit 11 judgements and the obstacle object 18, if and 18 distances of obstacle object are lower than a standard value, then processing unit 11 promptly transmits emergence message and gives alarm module 14, sends information warning 15 by alarm module 14, to remind the driver, reach the function that keeps a safe distance.
Yet, use laser as the detecting vehicle distance device, its cost is too high, involve great expense, be not easy to a large amount of popularizing, therefore also the someone uses infrared ray as the mode that substitutes, but, in the use of infrared ray detecting vehicle distance mode, infrared ray is through glass the time, and meeting stopping because of glass, cause deleterious, though can replace laser detecting vehicle distance device, reduce cost, need to consider error through being produced after the glass, in addition, also the someone uses the ultrasonic reflection way, reaching the mode of detecting vehicle distance, yet though the ultrasonic cost is lower than laser, and can in the measurement of spacing, not produce error because of the event of glass, yet ultrasonic but can only use in short-range detecting, and is anti-not as good as laser or infrared ray in the detecting for the long distance of general need.
For satisfying the above-mentioned demand that can reduce cost that proposes, and the obstruction of glass between can be not outer because of Che Nei and car, the error that causes spacing to measure, and can reach the demand of long distance detecting.The inventor is based on going in for the study for many years and many practical experience, inquires into special topic through research and design in many ways, satisfies in the present invention to propose a kind of detecting vehicle distance device with as aforementioned expectation one implementation and foundation.
[summary of the invention]
Because above-mentioned problem, purpose of the present invention utilizes a photographing module to obtain the front vehicles image for a kind of detecting vehicle distance device is provided, and judges that front vehicles image and vehicle image data compare, and reach the effect that spacing is detectd side.
For reaching above-mentioned purpose, according to a kind of detecting vehicle distance apparatus and method of the present invention, this detecting vehicle distance device includes a Database Unit at least, one image unit, one processing unit and an alarm module, wherein Database Unit writes down at least one vehicle image data, after taking the front vehicles image by image unit, be sent to and carry out the image cutting process in the processing unit, comparing with image after the cutting and the vehicle image data in the Database Unit, so as to the distance of judgement with front vehicles, if work as hypotelorism, then by display unit in the alarm module or audio unit or send alert news simultaneously, reach with front vehicles and keep a safe distance.
From the above, because of according to detecting vehicle distance device of the present invention, the method for a kind of detecting vehicle distance of more can deriving, its step is as follows:
Write down at least one vehicle image data in advance to Database Unit.
Utilize image unit to take the front vehicles image.
Accept the front vehicles image by processing unit, and the front vehicles image is done the image cutting process, to obtain cutting back image, will cut back image and vehicle image data again and do contrast, with the distance of judgement with front vehicles.
By alarm module, when processing unit is judged when being lower than a reference value with the front vehicles distance, by display unit in the alarm module or audio unit or send alarm signal simultaneously.
To sum up discuss, because of complying with detecting vehicle distance device and method of the present invention, obtain the front vehicles image by image unit after, do the image cutting via processing unit again, to cut back image and vehicle image data again and do contrast,, reach purpose of the present invention in fact to judge and the distance of front vehicles.
[description of drawings]
Fig. 1 is existing laser detecting vehicle distance device.
Fig. 2 is a detecting vehicle distance device of the present invention.
Fig. 3 is a vehicle distance detecting method process flow diagram of the present invention.
Fig. 4 is the implementing procedure figure of a kind of detecting vehicle distance device of the present invention.
Fig. 5 is another preferable detecting vehicle distance device calcspar of the present invention.
[embodiment]
Hereinafter with reference to correlative type, the detecting vehicle distance device according to preferred embodiment of the present invention is described, wherein components identical will be illustrated with identical reference marks.
Below be the preferred embodiment of detecting vehicle distance device of the present invention, be convenient to understand for making, the component symbol among the following embodiment continue to use with last embodiment in the symbol of similar elements illustrate.
See also Fig. 2, be detecting vehicle distance device of the present invention.This detecting vehicle distance device 2 includes a Database Unit 21, an image unit 22, a processing unit 23 and an alarm module 23 at least, wherein Database Unit 21 is stored at least one vehicle image data 211, image unit 22 is used to take the front vehicles image 221 of a front vehicles 25, and alarm module 24 includes a display unit 241 and an audio unit 242.By processing unit 23, receive the front vehicles image 221 that image unit 22 is obtained, again front vehicles image 221 is done an image cutting process 231, to obtain a cutting image 232, do a contrast 233 according to the vehicle image data 211 of being stored in the Database Unit 21 again, with the distance 234 of judgement with front vehicles 25, when if distance 234 is lower than a reference value, promptly by display unit in the alarm module 24 241 or audio unit 242 or send an information warning 26 simultaneously, reach the effect that keeps a safe distance to remind the user.
See also Fig. 3, it is the vehicle distance detecting method process flow diagram of a kind of detecting vehicle distance device of the present invention, and the step of its method is as back:
Step 31: write down at least one vehicle image data in advance to Database Unit;
Step 32: utilize image unit to take the front vehicles image;
Step 33: accept the front vehicles image by processing unit, and the front vehicles image is done the image cutting process, to obtain cutting back image, will cut back image and vehicle image data again and do contrast, with the distance of judgement with front vehicles; And
Step 34: by alarm module, when processing unit is judged when being lower than a reference value with the front vehicles distance, by display unit in the alarm module or audio unit or send information warning simultaneously.
Please continue to consult Fig. 4, be the implementing procedure figure of a kind of detecting vehicle distance device of the present invention, it implements process step as back:
Step 401: confirm the image unit state;
Step 402: obtain the front vehicles image;
Step 403: judge that front vehicles is one? if then carry out step 404.If not, then carry out step 405;
Step 404: obtain over against the front vehicles image;
Step 405: finish the contrast of carrying out other vehicle after the front vehicles image comparison again;
Step 406: the front vehicles image is done image cutting to obtain a cutting back image;
Step 407: judge that cutting back image is effective image? if then carry out step 408.If not, then return step 402;
Step 408: distinguish effective image;
Step 409: effective image area is told compact car, in-between car or large car;
Is step 410: the ambient brightness of judging vehicle higher than threshold value? if then carry out step 411.If not, then carry out step 412;
Step 411: start the contrastive pattern on daytime;
Step 412: start the contrastive pattern at night;
Step 413: contrast front vehicles image and vehicle image data;
Step 414: judge with the front vehicles distance to be lower than reference value? if then carry out step 415.If not, then return step 402; And
Step 415: send information warning.
See also Fig. 5, be another preferable detecting vehicle distance device calcspar of the present invention.In this figure, these preferable detecting vehicle distance device 5 external image units 54, and this detecting vehicle distance device 5 includes a Database Unit 51, a processing unit 52 and an alarm module 53 at least, wherein Database Unit 51 writes down at least one vehicle image data 511, and alarm module 53 includes a display unit 531 and an audio unit 532.After 54 pairs one front vehicles 55 of image unit are obtained front vehicles image 541, processing unit 52 is promptly done an image cutting process 521 to this place ahead vehicle image 541, so as to obtaining a cutting image 522, then do a contrast 523 at vehicle image data from Database Unit 51 511 and cutting image 522, differentiate distance 524 whereby with front vehicles 55, if when this distance 524 is lower than a reference value, promptly by display unit in the alarming device 53 531 or audio unit 532 or send information warning 56 simultaneously, remind user's safe distance that maintains safe distance.
The above only is an illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the accompanying claim its equivalent modifications of carrying out or change.
Claims (42)
1, a kind of detecting vehicle distance device is characterized in that: comprise at least:
One Database Unit is in order to write down at least one vehicle image data;
One image unit is in order to obtain a front vehicles image;
One processing unit in order to receiving this front vehicles image, and is done the processing of image cutting to this front vehicles image, to produce a cutting back image, should cut back image and this vehicle image data again and do a contrast, with a distance of a judgement and a front vehicles; And
One alarm module has a display unit and an audio unit;
Wherein, when this processing unit judges that this distance is lower than a reference value, this display unit or this audio unit in this alarm module or send alarm signal simultaneously then.
2, detecting vehicle distance device as claimed in claim 1, it is characterized in that: this processing unit is before carrying out this contrast, prejudge whether this cutting back image is an effective image, when the non-effective image of this cutting back image, then continue to take, when this cutting back image was effective image, the side carried out this contrast.
3, detecting vehicle distance device as claimed in claim 1 is characterized in that: this processing unit carries out a differentiating and processing to this cutting back image, and distinguishing this front vehicles is a dilly, a medium sized vehicle or an oversize vehicle.
4, detecting vehicle distance device as claimed in claim 1, it is characterized in that: this processing unit is done a juggling to this cutting back image, in order to differentiate the ambient brightness of this vehicle, and set a threshold value, when this ambient brightness less than this threshold value, then be considered as night running, and start contrastive pattern in one night, when this ambient brightness greater than this threshold value, then be considered as non-night running, and start one daytime the contrastive pattern.
5, detecting vehicle distance device as claimed in claim 4 is characterized in that: this daytime, the contrastive pattern carried out this contrast according to profile and this vehicle image data of this front vehicles.
6, detecting vehicle distance device as claimed in claim 4 is characterized in that: this night, the contrastive pattern carried out this contrast according to the car light lamp distance of this front vehicles with these vehicle image data.
7, detecting vehicle distance device as claimed in claim 4 is characterized in that: this night, the contrastive pattern carried out this contrast according to the car light size of this front vehicles with these vehicle image data.
8, detecting vehicle distance device as claimed in claim 4 is characterized in that: this night, the contrastive pattern carried out this contrast according to car light brightness and this vehicle image data of this front vehicles.
9, detecting vehicle distance device as claimed in claim 1 is characterized in that: this image unit can be taken the place ahead, rear or right and left this front vehicles image of a vehicle.
10, detecting vehicle distance device as claimed in claim 1, it is characterized in that: this image unit is included as a camera.
11, detecting vehicle distance device as claimed in claim 1 is characterized in that: this image unit can carry out one and take action continuously.
12, detecting vehicle distance device as claimed in claim 1 is characterized in that: this detecting vehicle distance device can be a personal digital assistant.
13, detecting vehicle distance device as claimed in claim 1 is characterized in that: if this front vehicles is greater than one, then this detecting vehicle distance device based on over against this front vehicles, and carry out this contrast.
14, detecting vehicle distance device as claimed in claim 13 is characterized in that: when this detecting vehicle distance device to this over against front vehicles finish this contrast after, promptly other front vehicles are carried out this contrast.
15, a kind of vehicle distance detecting method is characterized in that: comprise at least:
Write down at least one vehicle image data to a Database Unit in advance;
Utilize an image unit to take a front vehicles image;
Receive this front vehicles image by a processing unit, and this front vehicles image is done the processing that an image cuts,, should cut back image and this vehicle image data again and do a contrast, with a distance of a judgement and a front vehicles to obtain a cutting back image; And
By an alarm module, when this processing unit judges that this distance is lower than a reference value, by a display unit in this alarm module or an audio unit or send alarm signal simultaneously.
16, vehicle distance detecting method as claimed in claim 15, it is characterized in that: this processing unit is before carrying out this contrast, whether prejudge this cutting image is an effective image, when the non-effective image of this cutting back image, then continue to take, when this cutting back image was effective image, the side carried out this contrast.
17, vehicle distance detecting method as claimed in claim 16, it is characterized in that: when this processing unit is this effective image to this cutting back image, this effective image is carried out a differentiating and processing, and distinguishing this front vehicles is a dilly, a medium sized vehicle or an oversize vehicle.
18, vehicle distance detecting method as claimed in claim 16, it is characterized in that: this processing unit is done a juggling to this cutting back image, in order to differentiate the ambient brightness of this vehicle, and set a threshold value, when this ambient brightness less than this benchmark matter, then be considered as night running, and start contrastive pattern in one night, when this ambient brightness greater than this threshold value, then be considered as non-night running, and start one daytime the contrastive pattern.
19, vehicle distance detecting method as claimed in claim 18 is characterized in that: this daytime, the contrastive pattern carried out this contrast according to profile and this vehicle image data of this front vehicles.
20, vehicle distance detecting method as claimed in claim 18 is characterized in that: this night, the contrastive pattern carried out this contrast according to the car light lamp distance of this front vehicles with these vehicle image data.
21, vehicle distance detecting method as claimed in claim 18 is characterized in that: this night, the contrastive pattern carried out this contrast according to the car light size of this front vehicles with these vehicle image data.
22, vehicle distance detecting method as claimed in claim 18 is characterized in that: this night, the contrastive pattern carried out this contrast according to car light brightness and this vehicle image data of this front vehicles.
23, vehicle distance detecting method as claimed in claim 15 is characterized in that: this image unit can be taken the place ahead, rear or right and left this front vehicles image of a vehicle.
24, vehicle distance detecting method as claimed in claim 15 is characterized in that: this image unit is included as a camera.
25, vehicle distance detecting method as claimed in claim 15 is characterized in that: this image unit can carry out one and take action continuously.
26, vehicle distance detecting method as claimed in claim 15 is characterized in that: this detecting vehicle distance device can be a personal digital assistant.
27, vehicle distance detecting method as claimed in claim 15 is characterized in that: if this front vehicles is greater than one, then this detecting vehicle distance device based on over against this front vehicles, and carry out this contrast.
28, vehicle distance detecting method as claimed in claim 27 is characterized in that: when this detecting vehicle distance device to this over against front vehicles finish this contrast after, promptly other front vehicles are carried out this contrast.
29, a kind of detecting vehicle distance device, an external image unit is characterized in that: comprise at least:
One Database Unit is in order to write down at least one vehicle image data;
One processing unit, in order to receiving the front vehicles image that this image unit obtains, and this front vehicles image done the processing of image cutting, to produce a cutting back image, should cut back image and this vehicle image data again and do a contrast, with the distance of judgement with a front vehicles; And
One alarm module has a display unit and an audio unit;
Wherein, when this processing unit judges that this distance is lower than a reference value, this display unit or this audio unit in this alarm module or send alarm signal simultaneously then.
30, detecting vehicle distance device as claimed in claim 29, it is characterized in that: this processing unit is before carrying out this contrast, prejudge whether this cutting back image is an effective image, when the non-effective image of this cutting back image, then continue to take, when this cutting back image was effective image, the side carried out this contrast.
31, detecting vehicle distance device as claimed in claim 29 is characterized in that: this processing unit carries out a differentiating and processing to this cutting back image, and distinguishing this front vehicles is a dilly, a medium sized vehicle or an oversize vehicle.
32, detecting vehicle distance device as claimed in claim 29, it is characterized in that: this processing unit is done a juggling to this cutting back image, in order to differentiate the ambient brightness of this vehicle, and set a threshold value, when this ambient brightness less than this threshold value, then be considered as night running, and start contrastive pattern in one night, when this ambient brightness greater than this threshold value, then be considered as non-night running, and start one daytime the contrastive pattern.
33, detecting vehicle distance device as claimed in claim 32 is characterized in that: this daytime, the contrastive pattern carried out this contrast according to profile and this vehicle image data of this front vehicles.
34, detecting vehicle distance device as claimed in claim 32 is characterized in that: this night, the contrastive pattern carried out this contrast according to the car light lamp distance of this front vehicles with these vehicle image data.
35, detecting vehicle distance device as claimed in claim 32 is characterized in that: this night, the contrastive pattern carried out this contrast according to the car light size of this front vehicles with these vehicle image data.
36, detecting vehicle distance device as claimed in claim 32 is characterized in that: this night, the contrastive pattern carried out this contrast according to car light brightness and this vehicle image data of this front vehicles.
37, detecting vehicle distance device as claimed in claim 29 is characterized in that: this image unit can be taken the place ahead, rear or right and left this front vehicles image of a vehicle.
38, detecting vehicle distance device as claimed in claim 29, it is characterized in that: this image unit is included as a camera.
39, detecting vehicle distance device as claimed in claim 29 is characterized in that: this image unit can carry out one and take action continuously.
40, detecting vehicle distance device as claimed in claim 29 is characterized in that: this detecting vehicle distance device can be a personal digital assistant.
41, detecting vehicle distance device as claimed in claim 29 is characterized in that: if this front vehicles is greater than one, then this detecting vehicle distance device based on over against this front vehicles, and carry out this contrast.
42, detecting vehicle distance device as claimed in claim 41 is characterized in that: when this detecting vehicle distance device to this over against front vehicles finish this contrast after, promptly other front vehicles are carried out this contrast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100316061A CN101441073A (en) | 2007-11-23 | 2007-11-23 | Apparatus and method for detecting vehicle distance |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100316061A CN101441073A (en) | 2007-11-23 | 2007-11-23 | Apparatus and method for detecting vehicle distance |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995240A (en) * | 2009-08-21 | 2011-03-30 | 财团法人工业技术研究院 | Method for receiving optical information as well as method and unit for identifying position of luminous object |
| CN104204721A (en) * | 2012-02-28 | 2014-12-10 | 科格尼维公司 | Single-camera distance estimation |
| CN106485187A (en) * | 2015-08-26 | 2017-03-08 | 长城汽车股份有限公司 | A kind of method and system judging front vehicles transport condition |
| CN106569201A (en) * | 2015-10-12 | 2017-04-19 | 常州博显汽车电子有限公司 | Infrared-based vehicle distance measuring system and method |
| CN106922175A (en) * | 2014-10-22 | 2017-07-04 | 株式会社电装 | Article detection device |
| CN109859489A (en) * | 2019-01-30 | 2019-06-07 | 驭势科技（北京）有限公司 | A kind of spacing estimation method, device, mobile unit and storage medium |
-
2007
- 2007-11-23 CN CNA2007100316061A patent/CN101441073A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995240A (en) * | 2009-08-21 | 2011-03-30 | 财团法人工业技术研究院 | Method for receiving optical information as well as method and unit for identifying position of luminous object |
| CN101995240B (en) * | 2009-08-21 | 2013-05-22 | 财团法人工业技术研究院 | Method for receiving optical information as well as method and unit for identifying position of luminous object |
| CN104204721A (en) * | 2012-02-28 | 2014-12-10 | 科格尼维公司 | Single-camera distance estimation |
| CN104204721B (en) * | 2012-02-28 | 2017-09-12 | 科格尼维公司 | Single camera distance estimations |
| CN106922175A (en) * | 2014-10-22 | 2017-07-04 | 株式会社电装 | Article detection device |
| CN106922175B (en) * | 2014-10-22 | 2019-10-01 | 株式会社电装 | Article detection device |
| CN106485187A (en) * | 2015-08-26 | 2017-03-08 | 长城汽车股份有限公司 | A kind of method and system judging front vehicles transport condition |
| CN106485187B (en) * | 2015-08-26 | 2020-01-14 | 长城汽车股份有限公司 | Method and system for judging driving state of front vehicle |
| CN106569201A (en) * | 2015-10-12 | 2017-04-19 | 常州博显汽车电子有限公司 | Infrared-based vehicle distance measuring system and method |
| CN109859489A (en) * | 2019-01-30 | 2019-06-07 | 驭势科技（北京）有限公司 | A kind of spacing estimation method, device, mobile unit and storage medium |
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Open date: 20090527 |