CN103065489B - A kind of instant navigation road condition system and air navigation aid - Google Patents
A kind of instant navigation road condition system and air navigation aid Download PDFInfo
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- CN103065489B CN103065489B CN201210586640.6A CN201210586640A CN103065489B CN 103065489 B CN103065489 B CN 103065489B CN 201210586640 A CN201210586640 A CN 201210586640A CN 103065489 B CN103065489 B CN 103065489B
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Abstract
The invention provides one immediately to navigate road condition system, comprise: in order to obtain the video monitor unit of the video of surrounding road condition, with the image acquisition unit of the video acquisition key images obtained from video monitor unit, in order to obtain command information graphics processing unit and in order to command information is informed user from key images.Present invention also offers a kind of air navigation aid of timely navigation road condition system, comprise the steps: to obtain real-time road condition video; Key images is determined from real-time road condition video; Command information is obtained from key images; Command information is informed user.The invention has the beneficial effects as follows and can give driver road surface navigation information promptly and accurately for road condition change timely and effectively.
Description
Technical field
The invention belongs to communication navigation field, especially relate to a kind of instant navigation road condition system and air navigation aid.
Background technology
In recent years, keep the background increased fast in economy under, automobile progressively entered average family, and National Information Center estimates, China will exceed the U.S. before and after 2015, and when the time comes, market capacity will more than 17,000,000.Meanwhile; highway in China construction, also at development, all can increase the highway of several ten thousand kilometers newly every year, driver on road through being unfamiliar with area time; usually need the auxiliary of navigational system; existing GPS navigation system relies on GPS and generalized information system, can give driver suitable guide accurately, but highway development makes rapid progress; and often can change due to urban road; and electronic chart often needs to upgrade one period, make troubles to driver, and easily cause traffic hazard.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of instant navigation road condition system and air navigation aid, is particularly suitable for the area that surface conditions often changes.
For solving the problems of the technologies described above, the technical solution used in the present invention is: one is navigated road condition system immediately, comprising:
Video monitor unit, in order to obtain the video of surrounding road condition;
Image acquisition unit, in order to the video acquisition key images obtained from video monitor unit;
Graphics processing unit, in order to obtain command information from key images;
Reminding unit, in order to inform user by command information.
Further, described graphics processing unit comprises:
Storage unit, in order to store corresponding road sign figure and implication;
Contrast unit, in order to the road sign figure that will capture compared with the road sign figure of storage;
Word recognition unit, in order to obtain corresponding Word message from key images.
Further, described video monitor unit is camera.
Further, described reminding unit is speech utterance equipment.
Further, described reminding unit is screen display device.
Further, described system also comprises the authentication unit in order to command information and follow-up key images to be carried out verifying.
According to a further aspect in the invention, additionally provide a kind of air navigation aid based on above-mentioned navigational system,
Comprise:
1) real-time road condition video is obtained;
2) from real-time road condition video, key images is determined;
3) from key images, command information is obtained;
4) command information is informed user.
Further, described air navigation aid the 3rd step also comprises:
By the icon graphic that captures from key images compared with the icon graphic of pre-stored;
Corresponding Word message is obtained from key images.
Further, described air navigation aid also comprises the steps: 1) catch in video and descend n frame key images in key images;
2) from lower n frame key images, command information is obtained;
3) whether correct according to following manner decision instruction information:
[n* (the n-th two field picture result)+(n-1) (the (n-1)th two field picture result)+... 1 (the 1st two field picture result)]/(n+n-1+ ... + 1) >=0.5 command information is errorless
[n* (n two field picture result)+(n-1) (n-1 two field picture result)+... 1 (the 1st two field picture result)]/(n+n-1+ ... + 1) <0.5 command information is incorrect
Wherein, what described image result was judged as YES is labeled as 1, and what be judged as NO is labeled as 0.
Owing to adopting technique scheme, driver can be given road surface navigation information promptly and accurately for road condition change timely and effectively.
Accompanying drawing explanation
Fig. 1 is schematic flow sheet of the present invention;
Fig. 2 is that the present invention's example uses scene schematic diagram;
Fig. 3 verifies schematic flow sheet in the present invention.
Embodiment
According to scene as shown in Figure 2, the invention provides the example worked under this scene:
When driver vehicle, namely the video monitor unit of native system starts to carry out work, in order to catch the real-time change of surrounding road condition, image data unit carries out sampling processing according to the frequency of setting to video image, this frequency can set as the case may be, 1hz or higher frequency can be taked, arranged the two field picture for certain hour interval, and judge whether to belong to the predefined key images of system according to the content in two field picture, key images refers to the image that may comprise the visible transport information of the multi views such as guideboard.Graphics processing unit processes the key images that previous step obtains, the figure of the guideboard instruction in key images is extracted, and compare with the image of pre-stored in storer, if comparison meets, then by its record, and by word recognition unit, the word on direction board is identified, and send these information to reminding unit, reminding unit by voice-output unit, by above-mentioned information by speech play to driver, for driver's reference.
In practical work process, due to the restriction of other conditions such as Distance geometry light, be difficult to only just can obtain corresponding transport information by a width key images, also be provided with an authentication unit in the present invention, this authentication unit is after graphics processing unit gets command information first, the frequency of image data unit setting is changed, by frequency modification to 3 ~ 5Hz, in order to obtain follow-up key images continuously, process subsequently and acquisition command information process described above similar, compare from the command information of rear a few frame key images and the command information of the first frame key images again, if command information is identical, then send these information to reminding unit in order to inform driver.If not identical with the command information of the first frame key images from the command information of follow-up key images, then calculate according to following manner:
[n* (n two field picture result)+(n-1) (n-1 two field picture result)+... 1 (the first two field picture result)]/(n+n-1+ ... + 1) >=0.5 confirms that command information is errorless
[n* (n two field picture result)+(n-1) (n-1 two field picture result)+... 1 (the first two field picture result)]/(n+n-1+ ... + 1) <0.5 command information is incorrect
N two field picture result can with 1 or 0 respectively presentation directives's information whether exist.
Can be whether accurate through continuous a few frame key images comprehensive descision command information according to above-mentioned method, further improve the accuracy rate of advance notice, reduce the probability of wrong report.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (2)
1. immediately to navigate a road condition system, comprising:
Video monitor unit, in order to obtain the video of surrounding road condition;
Image acquisition unit, in order to the video acquisition key images obtained from video monitor unit according to the frequency of setting;
Graphics processing unit, in order to obtain command information from key images;
Reminding unit, in order to inform user by command information;
Authentication unit, in order to after graphics processing unit gets command information first, the frequency of image acquisition unit setting is changed, frequency is modified to 3 ~ 5Hz from 1Hz, in order to obtain follow-up key images continuously, and command information and follow-up key images are verified;
Wherein said graphics processing unit comprises:
Storage unit, in order to store corresponding road sign figure and implication;
Contrast unit, in order to the road sign figure that will capture compared with the road sign figure of storage;
Word recognition unit, in order to obtain corresponding Word message from key images.
2. the air navigation aid of an instant navigation road condition system according to claim 1:
Comprise:
1) real-time road condition video is obtained;
2) from real-time road condition video, key images is determined;
3) from key images, obtain command information, comprise by the icon graphic that captures from key images compared with the icon graphic of pre-stored, and from key images, obtain corresponding Word message;
4) command information is verified, authentication unit is changed the frequency obtained, and frequency is modified to 3 ~ 5Hz from 1Hz, descends n frame key images in order to catch in video in key images, command information is obtained from lower n frame key images, whether correct according to following manner decision instruction information:
[n*(n-th two field picture result)+(n-1) * (the (n-1)th two field picture result)+... 1*(the 1st two field picture result)]/(n+n-1+ ... + 1) >=0.5 command information is errorless
[n*(n two field picture result)+(n-1) * (n-1 two field picture result)+... 1*(the 1st two field picture result)]/(n+n-1+ ... + 1) <0.5 command information is incorrect;
Wherein, what described image result was judged as YES is labeled as 1, and what be judged as NO is labeled as 0;
5) command information is informed user.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210586640.6A CN103065489B (en) | 2012-12-28 | 2012-12-28 | A kind of instant navigation road condition system and air navigation aid |
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| CN201210586640.6A CN103065489B (en) | 2012-12-28 | 2012-12-28 | A kind of instant navigation road condition system and air navigation aid |
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| CN103065489B true CN103065489B (en) | 2015-10-21 |
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| CN106323315A (en) * | 2016-09-14 | 2017-01-11 | 百度在线网络技术（北京）有限公司 | Live broadcast navigation method and device |
| WO2018187974A1 (en) * | 2017-04-12 | 2018-10-18 | 深圳市南北汽车美容有限公司 | Road sign identification prompting method and prompting system |
| CN108256493A (en) * | 2018-01-26 | 2018-07-06 | 中国电子科技集团公司第三十八研究所 | A kind of traffic scene character identification system and recognition methods based on Vehicular video |
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| JP4631750B2 (en) * | 2006-03-06 | 2011-02-16 | トヨタ自動車株式会社 | Image processing system |
| DE102010039634B4 (en) * | 2010-08-23 | 2013-05-08 | Ford Global Technologies, Llc | Arrangement and method for traffic sign recognition |
| DE102010062633A1 (en) * | 2010-12-08 | 2012-06-14 | Robert Bosch Gmbh | Method and device for detecting traffic signs in the vicinity of a vehicle and comparison with traffic sign information from a digital map |
| CN202058314U (en) * | 2011-03-18 | 2011-11-30 | 上海理工大学 | Vehicle-mounted traffic road sign real-time recognition device |
| CN202084185U (en) * | 2011-06-16 | 2011-12-21 | 长安大学 | Automatic traffic sign identification device |
| CN102789693B (en) * | 2012-08-10 | 2015-09-30 | 深圳市路畅科技股份有限公司 | A kind of road sign automatic identifying method and vehicle-mounted recognition device |
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