CN103942598A - Counting system and method of objects - Google Patents
Counting system and method of objects Download PDFInfo
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- CN103942598A CN103942598A CN201310020619.4A CN201310020619A CN103942598A CN 103942598 A CN103942598 A CN 103942598A CN 201310020619 A CN201310020619 A CN 201310020619A CN 103942598 A CN103942598 A CN 103942598A
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Abstract
The invention provides a counting system and method of objects. The counting system of the objects obtains the depth-of-field information in a detection range through a depth-of-field detector, and then forms height distribution according to the depth-of-field information, whether one or more objects exist is judged according to the contour line density in the height distribution, and the number of the objects in the detection range can be worked out. According to the counting system and method of the objects, the movement tracks of the objects can be judged according to the change of the height distribution of different times, the purpose of counting is achieved, and then the labor requirement is judged according to the number of the objects in multiple positions.
Description
Technical field
The present invention relates to a kind of number system and method for object, particularly a kind of number system and method for utilizing the technology of height detection to judge mobile object counting.
Background technology
The known existing technology of much counting for the stream of people of turnover specific occasion, such as, when turnover personnel's quantity need to be known in department store or sales field, people stream counting device can be set in doorway, such as, utilize known technology as No. I307059 (day for announcing: 2009/03/01) disclosed sluice gate turnover people stream counting method of Taiwan patent, the disclosed method of this patent is that a kind of technology of utilizing image processing judges the number in the captured image of video camera, describe according to this patent, set up video camera in gateway, obtain personnel's the distribution of overlooking mobile graphics (moving pattern), compare with the reference model area of setting up in advance, estimated number whereby, then, draw the pattern recognition benchmark after a color vectors (color vector) that represents mobile graphics moves as tracking personnel using " the color analysis conclusion " of mobile graphics again.
Separately just like No. 201129932 (open day: the image-type gateway people stream counting method 2011/09/01) disclosing of Taiwan patent publication No., this patent is utilized video camera pick-up image equally, process to reach the object of gateway people stream counting by computer visual image, then provide the technology of adjustment of image accurately to calculate entrance stream of people quantity.
Summary of the invention
Being different from known technology uses light blocking or image to process the mode that judges motive objects or pass in and out the personnel of particular place, the special proposition of the present invention utilizes the mode of height detection fabrication techniques height distribution plan to judge number system and the method for a kind of object of certain objects, in a special-purpose, this number system can detect the number in one or more particular ranges, and does the manpower requirement analysis after a statistics by a counting computing center.
The embodiment disclosing according to invention, the method of counting of object comprises following step: first obtain the depth of view information in a sensing range, method forms one according to depth of view information again and highly distributes, afterwards, according to the level line density in highly distributing, judge the one or more objects in sensing range, and calculate the number of objects in this sensing range.
Wherein one of producing method of depth of view information can by two different video cameras take same scope image produce difference drawn; Or judge the depth of view information in its sensing range with the reflection wave of the forms such as electromagnetic wave, electric wave, sound wave, and form whereby one and highly distribute, whether have object central, particularly distributed and judged people's existence by height if therefore can judge.
The motion track that can judge according to the height changes in distribution of front and back different time afterwards wherein one or more objects, also can continue by the judgement of threshold, the mobile object of threshold crossing mark to be counted.
According to an embodiment again, number system can comprise a counting computing center, and counting computing center can obtain by specific on-line mode the numerical value of many groups number of objects in multiple places, is preferably number, can judge a manpower requirement by the calculating of number.
The number system of object comprises one or more depth of field detecting devices and counting computing center, when this counting computing center is received from the depth of view information that one or more depth of field detecting devices provided respectively, form according to this height of one in special time distribution plan, then according to one or more height medium high linear density that distributes, judge whether one or more objects, and counted.
The counting computing center of this embodiment indication is provided with a Computer Calculator, and the depth of view information that can be located at the same time that multiple depth of field detecting devices of diverse location provide according to reception is calculated and judged wherein relatively high point, and then is defined as certain objects.
The present invention also provides a kind of number system of object, and described system comprises: one or more depth of field detecting devices, and each depth of field detecting device is in order to obtain the depth of view information of a sensing range within a period of time; One counting computing center, be received from these one or more depth of field detecting devices depth of view information of this period that is provided in respectively, form according to this height distribution plan of this period, then according to these one or more height medium high linear density that distributes, judge whether one or more objects, and counted.
The number system of object of the present invention and method can be taken according to the video camera of the depth of field judgement image of a particular range, and can obtain the each point distance value (depth of field) in particular range, and show that the height within the scope of this distributes, can obtain the position of relative high point according to isocontour density and the elevation information of surrounding; Also can distribute and draw the situation that object moves according to the height of surrounding time, reach the object of counting.
Brief description of the drawings
Figure 1A is one of embodiment schematic diagram of the number system of object of the present invention;
Figure 1B be the number system of object of the present invention embodiment schematic diagram two;
Fig. 2 is the height distribution plan schematic diagram that utilizes the number system of object of the present invention to make;
Fig. 3 be the number system of object of the present invention embodiment schematic diagram three;
Fig. 4 be the number system of object of the present invention embodiment schematic diagram four;
Fig. 5 A is one of embodiment functional block diagram of the number system of object of the present invention;
Fig. 5 B be the number system of object of the present invention embodiment functional block diagram two;
Fig. 6 is one of method of counting process flow diagram of object of the present invention;
Fig. 7 is the number system schematic diagram of object of the present invention;
Fig. 8 be object of the present invention method of counting process flow diagram two.
[main element description of reference numerals]
Depth of field detecting device 10 transmitted waves 102
People 101,103,101 ', 103 ' video camera 11,12
Height detection scope 20 concentrated areas 201,203
Depth of field detecting device 30 people 301
Threshold mark 31,32
Depth of field detecting device 40 sensing ranges 42
Depth of field detecting device 50 transmitter units 501
Receiving element 502 high computational unit 503
Elevation information 51
Counting computing center 54 forming unit 541 that highly distributes
Object judging unit 542 threshold comparing units 543
Counting unit 544 depth of field detecting devices 50 '
The first video camera 505 second video cameras 506
Counting computing center 70 depth of field detecting devices 701,702,703
One of the method for counting flow process of step S601 ~ S607 object
Two of the method for counting flow process of step S801 ~ S807 object
Embodiment
According to one of contained embodiment of invention, the number system of object proposed by the invention and method are whether to have certain objects, mobile object in the middle of the height distribution plan that draws according to the depth of view information of a sensing range is judged, and count the number of people especially, and judge according to this manpower requirement in an embodiment.But when practical application, object can be according to the requirements set object in sensing range, do not get rid of for people, animal, vehicle or special article be detected object.
According to embodiment, Figure 1A is the embodiment schematic diagram of number system, the present embodiment is taking humanoid as example, as shown in Figure 1A, be provided with a depth of field detecting device 10 in ceiling, depth of field detecting device 10 emitting electromagnetic wave (as transmitted wave 102) from top to bottom in a sensing range, do not get rid of and can adopt invisible light, electric wave, sound wave etc., central various facilities, article, people 101, 103 entity objects such as grade all can reflect this electromagnetic wave and (be in particular invisible light, as infrared light, radiowave), receiving trap in the middle of depth of field detecting device 10 receives reflection electromagnetic wave, cause for this reason sensing range should have ground, the background information that existing facility forms, therefore, can be according to the mistiming between transmitted wave 102 and relative reflection wave, calculate the object of judgement prospect (reflection interval early), thereby determine the depth of view information of each position, and then show that the height in this sensing range distributes.
Therefore the present invention can distribute and judge whether to have certain objects according to the height within the scope of this, if the object of judgement is behaved, can set according to this threshold judgement of the depth of field, with artificial example, can set height (as 100 centimetres high to 200 centimetres) and the shared area (as the area of a circle diameter 50-70 centimetre overlooking) of people that threshold is behaved, threshold judges whether in scope, have one or above people (101,103) according to this.
Then, Figure 1B shows another embodiment schematic diagram of the number system of object of the present invention again.
In the present embodiment, above a sensing range, be provided with depth of field detecting device 10 equally, with video camera 11,12 respectively with different directions, angle shot sensing range.Similarly, this sensing range comprises the background that original ground or facility form, by video camera 11,12 images of taking from different perspectives can be got rid of the object of original background, and then because having different f-numbers, different video cameras cause captured object to have different fog-levels, therefore, can judge according to this depth of field.After getting rid of above-mentioned background information, the height that can form according to depth of view information smoothly distributes and judges foreground object, as the people 101 ' of the present embodiment, 103 ', but in practical operation, do not get rid of other objects, as animal, vehicle etc., system can be set it according to the object of required detection and judge threshold, as the parameter such as height, area occupied of above-mentioned object.
Fig. 2 shows the height distribution icon intention of utilizing the number system of object of the present invention to make, wherein be presented in a height detection scope 20, the level line (contour line) of drawing according to above-mentioned depth of view information, design according to demand the isocontour resolution that number system provides, each level line represents a height value or an altitude range, between each high line, can obtain a difference in height, therefore, can judge whether according to isocontour density the existence of certain objects.
In the present embodiment, wherein show two concentrated areas 201,203 that level line is comparatively intensive, can calculate this two concentrated areas 201 according to depth of view information, 203 height and the information of occupied area, therefore judging according to threshold is people, animal, vehicle or other objects.
For instance, taking an adult as example, height sensor is located at top, after the calculating of the depth of field, in simple terms, if 170 centimetres of people's height of heads, shoulder height are about 140 centimetres of left and right, if this difference in height forms in the scope of approximately 60 cm diameters, can be judged as according to this adult.
According to above-described embodiment, the present invention can utilize the information of the depth of field to judge the existence of object, can also judge according to the height changes in distribution of surrounding time the movement of this object, and can further calculate by specific turnover entrance or the number of particular range.
Another embodiment schematic diagram of the number system of object of the present invention as shown in Fig. 3 follows.In the present embodiment, top is provided with height sensor 30, in the scope of taking, there is a people 301, when distributing and judge this person 301 existence according to above-mentioned height, system is by locking people's 301 position, distribute and compare through the height of surrounding time (in certain period), can judge according to the variation highly distributing people 301 movement.Above-mentioned according to the technology of image locking for generally common, and for those skilled in the art can realize, do not repeat at this.
If the number system of object of the present invention in be provided with two threshold marks 31,32 in the scope that detects of wish, the object in can determination range can also be followed the trail of the movement of object, and judge whether to cross over threshold mark 31,32 wherein existing.Such as the gateway of an occasion, can judge number of people entering according to set threshold mark 31,32, such as being located at the top position of an occasion, can judge the number of the certain sensing range of turnover.
It is worth mentioning that, known technology utilizes the mode of image identification to carry out calculation according to each pixel, need powerful data-handling capacity, and the method for counting of the disclosed object of the embodiment of the present invention not adopts the known technology of utilizing image identification to judge the stream of people, only judge the stream of people according to the depth of field within the scope of particular detection and distribution highly, the data of required processing are only general numerical analysis, therefore required powerful of known technology not on system processing power; In other words,, under same processing power, the present invention can deal with a large amount of object judgements, tracking and threshold judgement, is applicable to large-scale occasion.
Fig. 4 then shows that the number system of object of the present invention is for the enforcement state of many people's large-scale occasion.
Wherein show a depth of field detecting device 40, can be according to the interior filmed image of sensing range 42, or the electromagnetic wave of sensing range 42 interior various objects (not getting rid of as various forms such as electric wave, sound wave, invisible lights) is judged the depth of field reflection interval, and then the height forming in sensing range 42 sometime distributes, judged the quantity of quantity, the movement of certain objects and this sensing range 42 of coming in and going out by wherein relative height and level line density.
In the present embodiment, depth of field detecting device 40 is located at the top of a sensing range 42, not only be located at the gateway of specific occasion, therefore can be directly according to height, distribution obtains the people's of multidigit differing heights quantity, the people who even each is moved follows the trail of and judges whether to shift out this scope 42, or has people to enter this sensing range 42.
Therefore, therefore the number system of the contained object of the present invention can obtain the number of specific region, and then produces other application, the embodiment as shown in Fig. 7 in the present invention and Fig. 8.
Fig. 7 shows that number system of the present invention is provided with a counting computing center 70, this counting computing center can be simultaneously and multiple depth of field detecting devices 701 of being located at diverse location, 702,703 connect, online with network, wire cable or wireless form, and can obtain each depth of field detecting device 701,702,703 elevation informations that transmit, counting computing center 70 then, in conjunction with the temporal information of self, judges each depth of field detecting device 701,702 within a certain period of time, the number of objects of 703 scopes that detect, as number.
It is worth mentioning that, under this structure, most calculation resources is all to concentrate on counting computing center 70, comprises the synchronization of time, therefore respectively holds circuit design, operating load and the power consumption of depth of field detecting device 701,702,703 all can be more relaxed.
In practical application, if the depth of field detecting device 701,702 of the present embodiment, 703 are located at the zones of different in a market, if there is specific region number more, the suggestion that this system can provide manpower to arrange, can send more manpowers or resource to the more region of this number.Separately having application is the distribution of electric power, can adjust electric power output according to the number of number, reaches power saving and the object that improves power consumption efficiency simultaneously.
Fig. 8 shows relevant flow process.
Start as step S801, in system, count computing center and can be obtained by the depth of field detecting device that sets up diverse location separately the elevation information of produced multiple positions; And then as step S803, the height producing according to the elevation information of each position distributes and judges mobile object and the quantity of multiple positions, maybe can obtain moving state; Then count, as step S805; And judgement manpower requirement, as step S807.
The embodiment functional block diagram of the number system of object of the present invention can be referring to Fig. 5 A, wherein main element is depth of field detecting device 50 and counting computing center 54, both can specific connection means be connected, comprise the modes such as network, wire cable, radiowave, counting computing center 54 can onlinely obtain the elevation information 51 that depth of field detecting device 50 produces by this, counting computing center 54 is according to this information and executing computing, the height that obtains 50 sensing ranges of detecting device distributes, and according to object quantity that wherein information judges.
Depth of field detecting device 50 is in order to obtain the depth of view information of a sensing range in sometime, the present embodiment can be a kind of counting of obtaining depth of view information in electromagnetic mode, comprising the transmitter unit 501 that sends detection signal, and the receiving element 502 of reception reflected signal, reflected signal may reflect the various objects in sensing range, comprises the background of initial setting and has other to enter the object of sensing range.
Separately there is a high computational unit 503 to be electrically connected transmitter unit 501 and receiving element 502, detection signal and the reflected signal of transmission will be obtained, can calculate both time differences, and with the signal fusing of script background, therefore obtain the each position depth of view information in sensing range, after drawing the depth of field of whole sensing range, form the height distribution plan of sensing range at special time.
After depth of field detecting device 50 show that the height of a time point distributes, by counting, computing center 54 obtains elevation information 51, and counting computing center 54 can judge according to this central object and count.In the present embodiment, in counting computing center 54, be provided with the height distribution forming unit 541 realizing with software module or circuit, can form the height distribution plan within the scope of one of time according to the temporal information of itself and above-mentioned elevation information 51, wherein the forming unit 541 that highly distributes of synchronously can allowing of system time identifies altitude signal sometime, therefore, the forming unit that highly distributes 541 is continuing to receive after the signal from depth of field detecting device 50, and each height that can produce different time distributes.
Then, in counting computing center 54, be provided with the object judging unit 542 of realizing with software or hardware circuit, can distribute and after getting rid of background, judge the existence of foreign body according to the level line in height distribution plan.Such as the larger region of, level line density can according to the object height characteristic of wish judgement judge and whether have object to exist.Also can judge mobile object according to the height changes in distribution of front and back different time, and then be confirmed to be foreign body.
Through counting, software or the hard-wired threshold comparing unit 543 in computing center 54 confirmed object afterwards, more and then judge whether to reach specific threshold.For instance, sensing range can comprise the threshold mark as described in above-mentioned Fig. 3, therefore can judge by this threshold the object in turnover specific occasion or region.
The counting unit 544 realizing with the software in counting computing center 54 is again counted, and comprises the object quantity in object quantity, turnover specific occasion or the region of calculating in sensing range etc.
Separately have embodiment as shown in Figure 5 B, the number system embodiment wherein showing utilizes two or more video cameras to obtain the technology of depth of view information by captured image difference of same time.
In the present embodiment, depth of field detecting device 50 ' is for utilizing the fog-level of filmed image to produce the detecting device of depth of view information, wherein can be provided with and take the same area but the first video camera 505 and second video camera 506 of different shooting angles, there is again a high computational unit 503 to be electrically connected these two video cameras 505,506, judge the depth of field of sensing range each point through obtaining the image information of the captured same position of different angles.
Judge the technology of the depth of field in the mode of utilizing two or more video cameras to take same position, the technology system wherein utilizing obtains depth of view information with the principle of stereoscopic vision, special in respectively obtained a width image (frame) with two video cameras in left and right mode of putting, utilization photographs object and obtains depth of view information in the measures of dispersion (disparity) of the position difference of two width images with triangulation, and in a sensing range, the depth of view information of multiple points can describe to form a height distribution plan.Separately have the method also can be by object within the scope of different video cameras (different f-number) shot detection, the image that two video cameras are taken has different fog-levels, therefore, can judge according to this depth of field.
The elevation information 51 that depth of field detecting device 50 ' shown in Fig. 5 B produces is carried out the calculation of highly distribution and the judgement of object by being sent to counting computing center 54.
In derivative embodiment, above-mentioned counting computing center can connect multiple depth of field detecting devices of being located at zones of different simultaneously, multiple depth of field detecting devices are by (computing center 54 is synchronous by counting) the inherent depth of view information that region detects separately of a period of time that is provided in respectively, and form according to this this time one height distribution plan, embodiment can consult the contained embodiment of above-mentioned Fig. 7 having described.
Fig. 6 then shows the method for counting process flow diagram of object of the present invention.
Comprise the depth of field judging by different video camera filmed images, or obtain the depth of view information of particular range by Electromagnetic Wave Detection mode, as step S601; When system obtains after depth of view information, form one and highly distribute, as step S603; Can judge possible object place through getting rid of background (comparing with prospect), such as the medium high linear density that distributes from one or more height has judged whether one or more objects, and count.Calculate again the movement of originally judging doubtful object with the height changes in distribution of surrounding time, can confirm that object is motive objects, as step S605; The state entering and exiting except carrying out object tracking and judgement, can also count the object in particular range, as step S607.
In sum, the present invention discloses a kind of number system and method for object, wherein one of main embodiment discloses the image that can take according to the video camera of the depth of field judgement particular range, and can obtain the each point distance value (depth of field) in particular range, and show that the height within the scope of this distributes, can obtain the position of relative high point according to isocontour density and the elevation information of surrounding.Also can distribute and draw the situation that object moves according to the height of surrounding time, reach the object of counting.
But, the foregoing is only better possible embodiments of the present invention, non-ly therefore limit to protection scope of the present invention, therefore the equivalent structure that all utilizations instructions of the present invention and accompanying drawing content are done changes, be all in like manner contained in scope of the present invention explanation hereby.
Claims (10)
1. a method of counting for object, is characterized in that, described method comprises:
Obtain the depth of view information in a sensing range;
Form one according to this depth of view information and highly distribute, the level line density in highly distributing according to this, judges the one or more objects in this sensing range; And
Calculate the number of objects in this sensing range.
2. the method for counting of object as claimed in claim 1, is characterized in that, the described height depth of view information of being judged by two captured image differences of different shooting angles that distributes is formed.
3. the method for counting of object as claimed in claim 1, is characterized in that, described height distributes and forms according to the Electromagnetic Wave Detection signal of one or more object reflections of this sensing range.
4. the method for counting of object as claimed in claim 1, is characterized in that, described method also comprises:
According to this variation highly distributing of front and back different time, judge the motion track of wherein one or more objects.
5. the method for counting of object as claimed in claim 4, is characterized in that, described method also comprises:
According to the motion track of these one or more objects, judge whether to cross over a threshold mark; And
To crossing over this threshold mark, mobile object is counted.
6. the method for counting of object as claimed in claim 1, is characterized in that, described method also comprises:
The numerical value of this number of objects is sent to a counting computing center, and this counting computing center obtains the numerical value of many groups number of objects in multiple places; And
According to the numerical value of this many groups number of objects, judge a manpower requirement.
7. a number system for object, is characterized in that, described system comprises:
One or more depth of field detecting devices, each depth of field detecting device is in order to obtain the depth of view information of a sensing range within a period of time;
One counting computing center, be received from these one or more depth of field detecting devices depth of view information of this period that is provided in respectively, form according to this height distribution plan of this period, then judge whether one or more objects according to these one or more height medium high linear density that distributes, and counted.
8. the number system of object as claimed in claim 7, it is characterized in that, described depth of field detecting device comprises a transmitter unit, a receiving element and a high computational unit, this high computational unit is electrically connected this transmitter unit and this receiving element, the depth of view information of the reflected signal judgement that the detection signal sending according to this transmitter unit and this receiving element receive, forms the height distribution plan of this sensing range this period.
9. the number system of object as claimed in claim 7, is characterized in that, described depth of field detecting device comprises at least two video cameras of taking different angles, obtains this depth of view information by captured image difference of same time.
10. the number system of object as claimed in claim 7, it is characterized in that, described counting computing center is provided with a Computer Calculator, receive the depth of view information of being located at the same time that multiple depth of field detecting devices of diverse location provide by online means simultaneously, the height being formed by depth of view information distributes, relatively high to judge whether having this object to calculate.
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| CN102622578A (en) * | 2012-02-06 | 2012-08-01 | 中山大学 | Passenger counting system and passenger counting method |
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| US4356387A (en) * | 1978-07-21 | 1982-10-26 | Giken Trading Co., Ltd. | Apparatus for counting the number of objects passing a given point |
| JP2002207989A (en) * | 2001-01-05 | 2002-07-26 | Sumitomo Osaka Cement Co Ltd | Method for counting passing object and counting device |
| US20110169917A1 (en) * | 2010-01-11 | 2011-07-14 | Shoppertrak Rct Corporation | System And Process For Detecting, Tracking And Counting Human Objects of Interest |
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Application publication date: 20140723 |