CN104732768A - Traffic data collecting method for interaction with signal lamps - Google Patents
Traffic data collecting method for interaction with signal lamps Download PDFInfo
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- CN104732768A CN104732768A CN201510164694.7A CN201510164694A CN104732768A CN 104732768 A CN104732768 A CN 104732768A CN 201510164694 A CN201510164694 A CN 201510164694A CN 104732768 A CN104732768 A CN 104732768A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
- G08G1/0116—Measuring and analyzing of parameters relative to traffic conditions based on the source of data from roadside infrastructure, e.g. beacons
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/04—Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors
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Abstract
The invention relates to a traffic data collecting method for an interaction with signal lamps. The traffic data collecting method comprises the steps that a CCD vision sensor is used for shooting the intersection with the signal lamps to obtain an intersection image; a haze removing processor is used for conducting sharpness processing on the intersection image; a jamming index analyzer is used for conducting image processing on the sharpness intersection image to obtain intersection jamming indexes; a signal lamp data collector is used for collecting signal lamp information in real time; an AT89C51 single-chip microcomputer is used for obtaining the intersection jamming indexes and signal lamp information, wherein the AT89C51 single-chip microcomputer is connected with the jamming index analyzer and the signal lamp data collector. By means of the traffic data collecting method, the accurate collection of the traffic data of the intersection with the signal lamps under all weather can be ensured, and an important basis is provided for the information releasing of the local traffic management department.
Description
Technical field
The present invention relates to field of information acquisition, particularly relate to crossing, a kind of signal lamp place and to pass through collecting method.
Background technology
In urban road travels, the automobile place that spended time is maximum is not from origin to destination the normal travel phase at road, but waits lamp or stage of being blocked near road traffic crossing at road traffic crossing.Along with the progress of science and technology and the raising of people's living standard, urbanization progress is constantly expanded, city city car gets more and more, urban road also more and more blocks up, especially in peak period on and off duty and festivals or holidays, take driver's too much time at road traffic crossing place, not only affect the mood of driver, easily cause traffic hazard, and be the major reason of urban congestion.Therefore, how to reduce the time waited at road traffic crossing place, improving efficiency and speed that vehicle travels, is one of problem of being extremely concerned about of control of traffic and road department.
In prior art, there is the technical scheme of some Traffic information demonstration, the driver near help evades the too much section of vehicle, and average wagon flow, improves traffic.Such as, by the jam situation in many sections around driver's current location is shown by roadside big screen display screen, driver is made to obtain the transport information in many sections going to destination in time, weigh choices, timely change drive route, while guarantee very fast arrival destination, suitable shunting is carried out to the wagon flow of congested link.But existing technical scheme just simply provides the congestion information in each section, do not provide traffic intersection to be detained the information of vehicle and the information of neighbouring lights state, provide Limited information, reference value is general.Also there are some distribution of information schemes based on crossing image recognition in prior art, but reliability is not high because not considering the impact of haze weather.
Therefore, need a kind of new Traffic information demonstration pattern, can the traffic intersection delay information of vehicle near driver's current location and the information of neighbouring lights state be sent on driver vehicle's inside terminals in time, driver is helped to understand the transport information of each traffic intersection neighbouring more meticulously, thus regulate route or travel speed, more effectively reach vehicle shunting effect, simultaneously, this pattern needs to overcome the interference of haze weather to information acquisition, improves the accuracy of data acquisition.
Summary of the invention
In order to solve the problem, according to an aspect of the present invention, the invention provides crossing, a kind of signal lamp place and to pass through collecting method, it comprises: utilize CCD vision sensor to take to obtain crossing image to crossing, described signal lamp place; Mist elimination haze processor is utilized to carry out sharpening process to obtain sharpening crossing image to described crossing image; Congestion index analyzer is utilized to carry out image procossing to obtain crossing congestion index to described sharpening crossing image; Utilize signal lamp data collector Real-time Collection signal information; Utilize AT89C51 single-chip microcomputer to obtain signal information described in described crossing congestion exponential sum, wherein said AT89C51 single-chip microcomputer is connected respectively with described congestion index analyzer and described signal lamp data collector.
Collecting method of the present invention utilize crossing, signal lamp place pass through data acquisition system (DAS) implement, therefore, according to another aspect of the present invention, present invention also offers crossing, a kind of signal lamp place to pass through data acquisition system (DAS), described system comprises CCD vision sensor, mist elimination haze processor, congestion index analyzer, signal lamp data collector and AT89C51 single-chip microcomputer, described CCD vision sensor is taken to obtain crossing image to crossing, described signal lamp place, described mist elimination haze processor carries out sharpening process to obtain sharpening crossing image to described crossing image, described congestion index analyzer carries out image procossing to obtain crossing congestion index to described sharpening crossing image, described signal lamp data collector is used for Real-time Collection signal information, described AT89C51 single-chip microcomputer is connected respectively with described congestion index analyzer and described signal lamp data collector, to obtain signal information described in described crossing congestion exponential sum.
More specifically, described data acquisition system (DAS) comprises further:
GPRS transceiver, is connected with described AT89C51 single-chip microcomputer, for signal information described in described crossing congestion exponential sum is broken into GPRS real time data bag, to be sent to local traffic control information promulgating platform by GPRS communication link;
Power supply, comprise solar powered device, accumulator, change-over switch and electric pressure converter, described change-over switch is connected respectively with described solar powered device and described accumulator, determine whether be switched to described solar powered device to be powered by described solar powered device according to accumulator dump energy, described electric pressure converter is connected with described change-over switch, with the 5V voltage transitions will inputted by change-over switch for 3.3V voltage;
User's entering apparatus, for the input according to user, set predetermined congestion index threshold value, the first crossing presumptive area and the second crossing presumptive area, the first crossing presumptive area and the second crossing presumptive area are all the border circular areas centered by crossing, described signal lamp place;
Portable hard drive, be connected with user's entering apparatus, for storing predetermined congestion index threshold value, the first crossing presumptive area and the second crossing presumptive area, store the crossing congestion exponential sum signal information of multiple traffic intersection in the first crossing presumptive area, also store the radio receiving terminal ID of each vehicle in the second crossing presumptive area.
Particularly, described mist elimination haze processor comprises:
Store sub-device, for prestoring sky upper limit gray threshold and sky lower limit gray threshold, described sky upper limit gray threshold and described sky lower limit gray threshold are for separating of the sky areas of publishing picture in picture, also for prestoring presetted pixel value threshold value, described presetted pixel value threshold value value is between 0 to 255;
The sub-device of haze Concentration Testing, is arranged in air, for the haze concentration of real time detection signal lamp position, and removes intensity according to haze concentration determination haze, and described haze removes intensity value between 0 to 1;
The sub-device of Region dividing, connect described CCD vision sensor to receive described crossing image, gray processing process is carried out to obtain gray processing area image to described crossing image, also be connected with the sub-device of storage, the pixel identification of gray-scale value in described gray processing area image between described sky upper limit gray threshold and described sky lower limit gray threshold is formed gray processing sky sub pattern, described gray processing sky sub pattern is partitioned into obtain the non-sky subimage of gray processing from described gray processing area image, the colour non-sky subimage corresponding with described gray processing non-sky subimage is obtained based on the correspondence position of described gray processing non-sky subimage in described beat image,
Black channel obtains sub-device, be connected with the sub-device of described Region dividing to obtain the non-sky subimage of described colour, for each pixel in the non-sky subimage of described colour, calculate its R, G, B tri-Color Channel pixel value, the R of all pixels in described colour non-sky subimage, G, B tri-extracts the Color Channel at the minimum Color Channel pixel value place of numerical value in Color Channel pixel value as black channel;
Overall air light value obtains sub-device, be connected to obtain presetted pixel value threshold value with the sub-device of described storage, obtain sub-device with the sub-device of described Region dividing and described black channel to be connected respectively to obtain described crossing image and described black channel, multiple pixels that black channel pixel value in the image of described crossing is more than or equal to presetted pixel value threshold value are formed set of pixels to be tested, the gray-scale value air light value as a whole of the pixel of maximum gradation value will be had in described set of pixels to be tested;
Atmospheric scattering light value obtains sub-device, be connected respectively with the sub-device of described Region dividing and the sub-device of described haze Concentration Testing, to each pixel of described crossing image, extract its R, G, in B tri-Color Channel pixel value, minimum value is as target pixel value, use and keep the Gaussian filter EPGF (edge-preserving gaussian filter) at edge to carry out filtering process to obtain filtered target pixel value to described target pixel value, target pixel value is deducted filtered target pixel value to obtain object pixel difference, EPGF is used to carry out filtering process to obtain filtered target pixel value difference to object pixel difference, filtered target pixel value is deducted filtered target pixel value difference and remove reference value to obtain haze, haze is removed intensity and be multiplied by haze removal reference value to obtain haze removal threshold value, get haze and remove minimum value in threshold value and target pixel value as comparison reference, get the atmospheric scattering light value of the maximal value in comparison reference and 0 as each pixel,
Medium transmission rate obtains sub-device, obtain sub-device and described atmospheric scattering light value with described overall air light value to obtain sub-device and be connected respectively, the atmospheric scattering light value of each pixel is removed value divided by overall air light value to obtain, deducts 1 described except value is to obtain the medium transmission rate of each pixel;
The sub-device of sharpening Image Acquisition, device with described Region dividing, described overall air light value obtains sub-device and obtains sub-device with described medium transmission rate and be connected respectively, the medium transmission rate of each pixel is deducted to obtain the first difference by 1, described first difference is multiplied by overall air light value to obtain product value, the pixel value of each pixel in the image of described crossing is deducted described product value to obtain the second difference, by described second difference divided by the medium transmission rate of each pixel to obtain the sharpening pixel value of each pixel, in the image of described crossing, the pixel value of each pixel comprises the R of each pixel in the image of described crossing, G, B tri-Color Channel pixel value, correspondingly, the sharpening pixel value of each pixel obtained comprises the R of each pixel, G, B tri-Color Channel sharpening pixel value, the sharpening pixel value composition sharpening crossing image of all pixels.
More specifically, the vehicle fleet size that described congestion index analyzer is used for traffic intersection place in the image of sharpening crossing is detained is analyzed, and to obtain crossing congestion index, the vehicle fleet size that traffic intersection place is detained is more, and corresponding crossing congestion index is higher.
More specifically, described AT89C51 single-chip microcomputer is connected respectively with described GPRS transceiver and described portable hard drive, by described GPRS transceiver, the first crossing presumptive area and the second crossing presumptive area are sent to local traffic control information promulgating platform, by the crossing congestion exponential sum signal information of each traffic intersection in the first crossing presumptive area of the local traffic control information promulgating platform feedback of described GPRS transceivers, and receive the radio receiving terminal ID of each vehicle in the second crossing presumptive area of local traffic control information promulgating platform feedback.
More specifically, described AT89C51 single-chip microcomputer is when the crossing congestion index that described congestion index analyzer exports is greater than predetermined congestion index threshold value, by described GPRS transceiver, the crossing congestion exponential sum signal information of multiple traffic intersection in the first crossing presumptive area is sent to each radio receiving terminal corresponding with the radio receiving terminal ID of each vehicle in the second crossing presumptive area.
More specifically, described acquisition system is arranged on the fixed transverse rod at crossing, signal lamp place.
More specifically, described user's entering apparatus, described portable hard drive, described mist elimination haze processor, described congestion index analyzer, described signal lamp data collector and described AT89C51 single-chip microcomputer are all located in the instrument case on the fixed transverse rod at crossing, signal lamp place.
More specifically, described CCD vision sensor and described GPRS transceiver are all arranged on the fixed transverse rod middle position at crossing, signal lamp place.
More specifically, described signal information comprises the current state of signal lamp, red light interval time, copper sulfate basic and yellow interval, and described current state comprises red light phase, amber light state and green light phase.
More specifically, described user's entering apparatus arranges the first crossing presumptive area and the second crossing presumptive area respectively by the radius of the radius of border circular areas corresponding to setting first crossing presumptive area and border circular areas corresponding to the second crossing presumptive area.
Pass through crossing, signal lamp place provided by the invention collecting method, introduce CCD vision sensor and congestion index analyzer to take the pass through delay vehicle of data acquisition system (DAS) place traffic intersection of crossing, signal lamp place and analyze, determine the jam situation at Current traffic crossing, the information interaction with local traffic control information promulgating platform is reached by GPRS data transmission means, obtain the crossing congestion exponential sum signal information of the multiple traffic intersections near driver's current location, different transport information is sent to the vehicle interior GPRS terminal of driver according to the congestion level at Current traffic crossing, the orientation realizing data is issued, simultaneously, according to atmospheric attenuation model determination haze to the influence factor of image, and the process of mist elimination haze is carried out to the image gathered under foggy days, system is made to widen systematic difference scope while guarantee precision.
Accompanying drawing explanation
Below with reference to accompanying drawing, embodiment of the present invention are described, wherein:
Fig. 1 is pass through the block diagram of data acquisition system (DAS) in the crossing, signal lamp place illustrated according to an embodiment of the present invention.
Embodiment
Be described in detail to implementing the pass through embodiment of data acquisition system (DAS) of collecting method of crossing, signal lamp place of the present invention below with reference to accompanying drawings.
Be provided with the crossing of signal lamp, be generally two or more road intersection.This is the only way which must be passed that vehicle and pedestrian collect, turn to and evacuate, and is the throat of traffic.Therefore, correctly design intersection, rationalization, management intersection traffic are the importances improving road passage capability and ensure traffic safety.Intersection divides level-crossing, traffic circle and traffic interchange.Level-crossing is that road intersects the crossing formed in same plane.Usually the form such as T-shaped, Y shape, cruciform, X-shaped, dislocation, annular is had.Traffic circle arranges the larger rotary island (central island) of an area in the middle of crossing, and vehicle interweaves and enters circuit, and around island one-way traffic.Traffic interchange is that road does not intersect the crossings on different level formed in same plane.
Except correctly designing crossing, also need, for driver provides correct intersection information, the traffic efficiency at each crossing could be ensured.Make discovery from observation, driver vehicle is in urban road travels, and whether what pay close attention to the most be junction ahead is red light, and whether junction ahead occurs vehicle congestion situation, is especially having emergency, when needing to rush towards destination fast.
But, the transport information of several Important Sections near driver's current location is merely provided in prior art, and the providing of information of the prior art, be the large-screen display board by roadside, the coverage rate of Information issued is not high, and the transport information content provided is limited.Although cause driver to have selected the section travelling smooth way in time, unexpected blockage when arriving in crossing being just in time red light or causing because of accident, still wastes the most of the time at traffic intersection place.In prior art, some only intersection information delivery systems based on image recognition are owing to lacking anti-fog haze treatment facility, easily cause information acquisition mistake.
Pass through crossing, signal lamp place of the present invention collecting method, can for driver provide near every key message at crossing of getting congestion, and, in order to eliminate the haze composition in the image of crossing, the mist elimination haze processor based on atmospheric attenuation modelling, thus the reliability of raising system comprehensively.
Fig. 1 is pass through the block diagram of data acquisition system (DAS) in the crossing, signal lamp place illustrated according to an embodiment of the present invention, described system comprises CCD vision sensor 1, mist elimination haze processor 2, congestion index analyzer 3, signal lamp data collector 4 and AT89C51 single-chip microcomputer 5, described CCD vision sensor 1 is taken to obtain crossing image to crossing, described signal lamp place, described mist elimination haze processor 2 carries out sharpening process to obtain sharpening crossing image to described crossing image, described congestion index analyzer 3 carries out image procossing to obtain crossing congestion index to described sharpening crossing image, described signal lamp data collector 4 is for Real-time Collection signal information, described AT89C51 single-chip microcomputer 5 is connected respectively with described congestion index analyzer 3 and described signal lamp data collector 4, to obtain signal information described in described crossing congestion exponential sum.
Then, more specific description is carried out to the pass through structure of data acquisition system (DAS) of crossing, signal lamp place of the present invention.
Described system also comprises: GPRS transceiver, is connected with described AT89C51 single-chip microcomputer 5, for signal information described in described crossing congestion exponential sum is broken into GPRS real time data bag, to be sent to local traffic control information promulgating platform by GPRS communication link.
Described system also comprises: power supply, comprise solar powered device, accumulator, change-over switch and electric pressure converter, described change-over switch is connected respectively with described solar powered device and described accumulator, determine whether be switched to described solar powered device to be powered by described solar powered device according to accumulator dump energy, described electric pressure converter is connected with described change-over switch, with the 5V voltage transitions will inputted by change-over switch for 3.3V voltage.
Described system also comprises: user's entering apparatus, for the input according to user, set predetermined congestion index threshold value, the first crossing presumptive area and the second crossing presumptive area, the first crossing presumptive area and the second crossing presumptive area are all the border circular areas centered by crossing, described signal lamp place.
Described system also comprises: portable hard drive, be connected with user's entering apparatus, for storing predetermined congestion index threshold value, the first crossing presumptive area and the second crossing presumptive area, store the crossing congestion exponential sum signal information of multiple traffic intersection in the first crossing presumptive area, also store the radio receiving terminal ID of each vehicle in the second crossing presumptive area.
Described mist elimination haze processor 2 also comprises with lower component:
Store sub-device, for prestoring sky upper limit gray threshold and sky lower limit gray threshold, described sky upper limit gray threshold and described sky lower limit gray threshold are for separating of the sky areas of publishing picture in picture, also for prestoring presetted pixel value threshold value, described presetted pixel value threshold value value is between 0 to 255;
The sub-device of haze Concentration Testing, is arranged in air, for the haze concentration of real time detection signal lamp position, and removes intensity according to haze concentration determination haze, and described haze removes intensity value between 0 to 1;
The sub-device of Region dividing, connect described CCD vision sensor 1 to receive described crossing image, gray processing process is carried out to obtain gray processing area image to described crossing image, also be connected with the sub-device of storage, the pixel identification of gray-scale value in described gray processing area image between described sky upper limit gray threshold and described sky lower limit gray threshold is formed gray processing sky sub pattern, described gray processing sky sub pattern is partitioned into obtain the non-sky subimage of gray processing from described gray processing area image, the colour non-sky subimage corresponding with described gray processing non-sky subimage is obtained based on the correspondence position of described gray processing non-sky subimage in described beat image,
Black channel obtains sub-device, be connected with the sub-device of described Region dividing to obtain the non-sky subimage of described colour, for each pixel in the non-sky subimage of described colour, calculate its R, G, B tri-Color Channel pixel value, the R of all pixels in described colour non-sky subimage, G, B tri-extracts the Color Channel at the minimum Color Channel pixel value place of numerical value in Color Channel pixel value as black channel;
Overall air light value obtains sub-device, be connected to obtain presetted pixel value threshold value with the sub-device of described storage, obtain sub-device with the sub-device of described Region dividing and described black channel to be connected respectively to obtain described crossing image and described black channel, multiple pixels that black channel pixel value in the image of described crossing is more than or equal to presetted pixel value threshold value are formed set of pixels to be tested, the gray-scale value air light value as a whole of the pixel of maximum gradation value will be had in described set of pixels to be tested;
Atmospheric scattering light value obtains sub-device, be connected respectively with the sub-device of described Region dividing and the sub-device of described haze Concentration Testing, to each pixel of described crossing image, extract its R, G, in B tri-Color Channel pixel value, minimum value is as target pixel value, use and keep the Gaussian filter EPGF (edge-preserving gaussian filter) at edge to carry out filtering process to obtain filtered target pixel value to described target pixel value, target pixel value is deducted filtered target pixel value to obtain object pixel difference, EPGF is used to carry out filtering process to obtain filtered target pixel value difference to object pixel difference, filtered target pixel value is deducted filtered target pixel value difference and remove reference value to obtain haze, haze is removed intensity and be multiplied by haze removal reference value to obtain haze removal threshold value, get haze and remove minimum value in threshold value and target pixel value as comparison reference, get the atmospheric scattering light value of the maximal value in comparison reference and 0 as each pixel,
Medium transmission rate obtains sub-device, obtain sub-device and described atmospheric scattering light value with described overall air light value to obtain sub-device and be connected respectively, the atmospheric scattering light value of each pixel is removed value divided by overall air light value to obtain, deducts 1 described except value is to obtain the medium transmission rate of each pixel;
The sub-device of sharpening Image Acquisition, device with described Region dividing, described overall air light value obtains sub-device and obtains sub-device with described medium transmission rate and be connected respectively, the medium transmission rate of each pixel is deducted to obtain the first difference by 1, described first difference is multiplied by overall air light value to obtain product value, the pixel value of each pixel in the image of described crossing is deducted described product value to obtain the second difference, by described second difference divided by the medium transmission rate of each pixel to obtain the sharpening pixel value of each pixel, in the image of described crossing, the pixel value of each pixel comprises the R of each pixel in the image of described crossing, G, B tri-Color Channel pixel value, correspondingly, the sharpening pixel value of each pixel obtained comprises the R of each pixel, G, B tri-Color Channel sharpening pixel value, the sharpening pixel value composition sharpening crossing image of all pixels.
Described congestion index analyzer 3 is analyzed for the vehicle fleet size be detained traffic intersection place in the image of sharpening crossing, and to obtain crossing congestion index, the vehicle fleet size that traffic intersection place is detained is more, and corresponding crossing congestion index is higher.
Described AT89C51 single-chip microcomputer 5 is connected respectively with described GPRS transceiver and described portable hard drive, by described GPRS transceiver, the first crossing presumptive area and the second crossing presumptive area are sent to local traffic control information promulgating platform, by the crossing congestion exponential sum signal information of each traffic intersection in the first crossing presumptive area of the local traffic control information promulgating platform feedback of described GPRS transceivers, and receive the radio receiving terminal ID of each vehicle in the second crossing presumptive area of local traffic control information promulgating platform feedback.
Described AT89C51 single-chip microcomputer 5 is when the crossing congestion index that described congestion index analyzer 3 exports is greater than predetermined congestion index threshold value, by described GPRS transceiver, the crossing congestion exponential sum signal information of multiple traffic intersection in the first crossing presumptive area is sent to each radio receiving terminal corresponding with the radio receiving terminal ID of each vehicle in the second crossing presumptive area.
Alternatively, described acquisition system is arranged on the fixed transverse rod at crossing, signal lamp place; Described user's entering apparatus, described portable hard drive, described mist elimination haze processor 2, described congestion index analyzer 3, described signal lamp data collector 4 and described AT89C51 single-chip microcomputer 5 are all located in the instrument case on the fixed transverse rod at crossing, signal lamp place; Described CCD vision sensor 1 and described GPRS transceiver are all arranged on the fixed transverse rod middle position at crossing, signal lamp place; Described signal information comprises the current state of signal lamp, red light interval time, copper sulfate basic and yellow interval, and described current state comprises red light phase, amber light state and green light phase; And described user's entering apparatus arranges the first crossing presumptive area and the second crossing presumptive area respectively by the radius of the radius of border circular areas corresponding to setting first crossing presumptive area and border circular areas corresponding to the second crossing presumptive area.
In addition, haze image can realize the mist elimination haze of image by a series of images treatment facility, to obtain the image of sharpening, improves the visibility of image.These image processing equipments perform different image processing functions respectively, based on the principle that haze is formed, reach the effect removing haze.The sharpening process of haze image all has great using value for dual-use field, and military domain comprises military and national defense, remote sensing navigation etc., and civil area comprises road monitoring, target following and automatic Pilot etc.
The process that haze image is formed can be described by atmospheric attenuation process, relation between haze image and real image and sharpening image can be stated by the medium transmission rate of overall air light value and each pixel, namely when known haze image, according to the medium transmission rate of overall air light value with each pixel, sharpening image can be solved.
There are some effective and through verifying means in the solving of medium transmission rate for overall air light value and each pixel, such as, for the medium transmission rate of each pixel, need the atmospheric scattering light value obtaining overall air light value and each pixel, and the atmospheric scattering light value of each pixel can obtain carrying out the Gaussian smoothing filter at twice maintenance edge to the pixel value of each pixel in haze image, therebetween, the intensity of haze removal is adjustable; And the acquisition pattern of overall air light value has two kinds, a kind of mode is, black channel by obtaining haze image (namely makes the black channel value of some pixels very low in haze image, black channel is R, G, one in B tri-Color Channel), in haze image, obtain by finding the maximum pixel of gray-scale value in multiple pixels that searching black channel pixel value is bigger than normal, be about to the gray-scale value air light value as a whole of that search out, that gray-scale value is maximum pixel, participate in the sharpening process of each pixel in haze image; In addition, overall air light value is also by obtaining with under type: the gray-scale value calculating each pixel in haze image, by the gray-scale value of pixel maximum for gray-scale value air light value as a whole.
Relation between concrete haze image and real image and sharpening image, and the relation between parameters can see above content.
By the discussion to haze image formation basic theory, build the relation between haze image and sharpening image, by this relation of multiple Parametric Representation, subsequently by the multiple parameter values that obtain and haze image and the higher image of reducible acquisition sharpness, some statistical means and empirical means have been used in acquisition due to parameter, therefore the image that described sharpness is higher can not be equal to real image completely, but there is the mist elimination haze effect of certain degree, for the every field operation under haze weather provides effective guarantee.
Crossing, signal lamp place of the present invention is adopted to pass through collecting method, release news limited for existing traffic intersection Information issued scheme, specific aim not high and be subject to haze weather interference technical matters, adopt CCD vision sensor 1, mist elimination haze processor 2 and congestion index analyzer 3 obtain the congestion information at current crossing, signal lamp data collector is adopted to obtain the signal information at current crossing, and mutual by GPRS transceiver and far-end locality traffic control information promulgating platform, obtain congestion information and the signal information of each traffic intersection of Current traffic crossing near zone, neighbouring vehicle termination is supplied to by GPRS mode, so that the reference of driver, under whole system is applicable to any haze weather, important evidence is provided for driver hides intersection.
Be understandable that, although the present invention with preferred embodiment disclose as above, but above-described embodiment and be not used to limit the present invention.For any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the technology contents of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (10)
1. pass through crossing, signal lamp place a collecting method, and it comprises: utilize CCD vision sensor to take to obtain crossing image to crossing, described signal lamp place; Mist elimination haze processor is utilized to carry out sharpening process to obtain sharpening crossing image to described crossing image; Congestion index analyzer is utilized to carry out image procossing to obtain crossing congestion index to described sharpening crossing image; Utilize signal lamp data collector Real-time Collection signal information; Utilize AT89C51 single-chip microcomputer to obtain signal information described in described crossing congestion exponential sum, wherein said AT89C51 single-chip microcomputer is connected respectively with described congestion index analyzer and described signal lamp data collector.
2. the method for claim 1, its utilize crossing, signal lamp place pass through data acquisition system (DAS) implement, described system comprises CCD vision sensor, mist elimination haze processor, congestion index analyzer, signal lamp data collector and AT89C51 single-chip microcomputer.
3. method as claimed in claim 2, wherein said current data acquisition system (DAS) also comprises:
GPRS transceiver, is connected with described AT89C51 single-chip microcomputer, for signal information described in described crossing congestion exponential sum is broken into GPRS real time data bag, to be sent to local traffic control information promulgating platform by GPRS communication link;
Power supply, comprise solar powered device, accumulator, change-over switch and electric pressure converter, described change-over switch is connected respectively with described solar powered device and described accumulator, determine whether be switched to described solar powered device to be powered by described solar powered device according to accumulator dump energy, described electric pressure converter is connected with described change-over switch, with the 5V voltage transitions will inputted by change-over switch for 3.3V voltage;
User's entering apparatus, for the input according to user, set predetermined congestion index threshold value, the first crossing presumptive area and the second crossing presumptive area, the first crossing presumptive area and the second crossing presumptive area are all the border circular areas centered by crossing, described signal lamp place;
Portable hard drive, be connected with user's entering apparatus, for storing predetermined congestion index threshold value, the first crossing presumptive area and the second crossing presumptive area, store the crossing congestion exponential sum signal information of multiple traffic intersection in the first crossing presumptive area, also store the radio receiving terminal ID of each vehicle in the second crossing presumptive area.
4. method as claimed in claim 3, wherein said mist elimination haze processor comprises:
Store sub-device, for prestoring sky upper limit gray threshold and sky lower limit gray threshold, described sky upper limit gray threshold and described sky lower limit gray threshold are for separating of the sky areas of publishing picture in picture, also for prestoring presetted pixel value threshold value, described presetted pixel value threshold value value is between 0 to 255;
The sub-device of haze Concentration Testing, is arranged in air, for the haze concentration of real time detection signal lamp position, and removes intensity according to haze concentration determination haze, and described haze removes intensity value between 0 to 1;
The sub-device of Region dividing, connect described CCD vision sensor to receive described crossing image, gray processing process is carried out to obtain gray processing area image to described crossing image, also be connected with the sub-device of storage, the pixel identification of gray-scale value in described gray processing area image between described sky upper limit gray threshold and described sky lower limit gray threshold is formed gray processing sky sub pattern, described gray processing sky sub pattern is partitioned into obtain the non-sky subimage of gray processing from described gray processing area image, the colour non-sky subimage corresponding with described gray processing non-sky subimage is obtained based on the correspondence position of described gray processing non-sky subimage in described beat image,
Black channel obtains sub-device, be connected with the sub-device of described Region dividing to obtain the non-sky subimage of described colour, for each pixel in the non-sky subimage of described colour, calculate its R, G, B tri-Color Channel pixel value, the R of all pixels in described colour non-sky subimage, G, B tri-extracts the Color Channel at the minimum Color Channel pixel value place of numerical value in Color Channel pixel value as black channel;
Overall air light value obtains sub-device, be connected to obtain presetted pixel value threshold value with the sub-device of described storage, obtain sub-device with the sub-device of described Region dividing and described black channel to be connected respectively to obtain described crossing image and described black channel, multiple pixels that black channel pixel value in the image of described crossing is more than or equal to presetted pixel value threshold value are formed set of pixels to be tested, the gray-scale value air light value as a whole of the pixel of maximum gradation value will be had in described set of pixels to be tested;
Atmospheric scattering light value obtains sub-device, be connected respectively with the sub-device of described Region dividing and the sub-device of described haze Concentration Testing, to each pixel of described crossing image, extract its R, G, in B tri-Color Channel pixel value, minimum value is as target pixel value, use and keep the Gaussian filter EPGF at edge to carry out filtering process to obtain filtered target pixel value to described target pixel value, target pixel value is deducted filtered target pixel value to obtain object pixel difference, EPGF is used to carry out filtering process to obtain filtered target pixel value difference to object pixel difference, filtered target pixel value is deducted filtered target pixel value difference and remove reference value to obtain haze, haze is removed intensity and be multiplied by haze removal reference value to obtain haze removal threshold value, get haze and remove minimum value in threshold value and target pixel value as comparison reference, get the atmospheric scattering light value of the maximal value in comparison reference and 0 as each pixel,
Medium transmission rate obtains sub-device, obtain sub-device and described atmospheric scattering light value with described overall air light value to obtain sub-device and be connected respectively, the atmospheric scattering light value of each pixel is removed value divided by overall air light value to obtain, deducts 1 described except value is to obtain the medium transmission rate of each pixel;
The sub-device of sharpening Image Acquisition, device with described Region dividing, described overall air light value obtains sub-device and obtains sub-device with described medium transmission rate and be connected respectively, the medium transmission rate of each pixel is deducted to obtain the first difference by 1, described first difference is multiplied by overall air light value to obtain product value, the pixel value of each pixel in the image of described crossing is deducted described product value to obtain the second difference, by described second difference divided by the medium transmission rate of each pixel to obtain the sharpening pixel value of each pixel, in the image of described crossing, the pixel value of each pixel comprises the R of each pixel in the image of described crossing, G, B tri-Color Channel pixel value, correspondingly, the sharpening pixel value of each pixel obtained comprises the R of each pixel, G, B tri-Color Channel sharpening pixel value, the sharpening pixel value composition sharpening crossing image of all pixels.
5. method as claimed in claim 3, wherein said congestion index analyzer is analyzed the vehicle fleet size that traffic intersection place in the image of sharpening crossing is detained, to obtain crossing congestion index, the vehicle fleet size that traffic intersection place is detained is more, and corresponding crossing congestion index is higher;
Described AT89C51 single-chip microcomputer is connected respectively with described GPRS transceiver and described portable hard drive, by described GPRS transceiver, the first crossing presumptive area and the second crossing presumptive area are sent to local traffic control information promulgating platform, by the crossing congestion exponential sum signal information of each traffic intersection in the first crossing presumptive area of the local traffic control information promulgating platform feedback of described GPRS transceivers, and receive the radio receiving terminal ID of each vehicle in the second crossing presumptive area of local traffic control information promulgating platform feedback;
Wherein said AT89C51 single-chip microcomputer is when the crossing congestion index that described congestion index analyzer exports is greater than predetermined congestion index threshold value, by described GPRS transceiver, the crossing congestion exponential sum signal information of multiple traffic intersection in the first crossing presumptive area is sent to each radio receiving terminal corresponding with the radio receiving terminal ID of each vehicle in the second crossing presumptive area.
6. method as claimed in claim 3, wherein said current data acquisition system (DAS) is arranged on the fixed transverse rod at crossing, signal lamp place.
7. method as claimed in claim 3, wherein said user's entering apparatus, described portable hard drive, described mist elimination haze processor, described congestion index analyzer, described signal lamp data collector and described AT89C51 single-chip microcomputer are all located in the instrument case on the fixed transverse rod at crossing, signal lamp place.
8. method as claimed in claim 3, wherein said CCD vision sensor and described GPRS transceiver are all arranged on the fixed transverse rod middle position at crossing, signal lamp place.
9. method as claimed in claim 3, wherein said signal information comprises the current state of signal lamp, red light interval time, copper sulfate basic and yellow interval, and described current state comprises red light phase, amber light state and green light phase.
10. method as claimed in claim 3, wherein said user's entering apparatus arranges the first crossing presumptive area and the second crossing presumptive area respectively by the radius of the radius of border circular areas corresponding to setting first crossing presumptive area and border circular areas corresponding to the second crossing presumptive area.
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