CN103964271B - Elevator monitoring arrangement and elevator monitoring method - Google Patents
Elevator monitoring arrangement and elevator monitoring method Download PDFInfo
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- CN103964271B CN103964271B CN201410017454.XA CN201410017454A CN103964271B CN 103964271 B CN103964271 B CN 103964271B CN 201410017454 A CN201410017454 A CN 201410017454A CN 103964271 B CN103964271 B CN 103964271B
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Abstract
There is provided elevator monitoring arrangement and method, process in car towards the image of the image pickup part of tiltedly below setting, the degree of congestion of carrying out car judges.Use the image taken by the image pickup part arranged towards oblique below taken in the car to elevator, measure the height of a part for passenger with the mark of the known height in car for benchmark; In car, passenger is followed the tracks of based on the image photographed by image pickup part; Using the position of a part for the passenger in image on picture as input, calculate when a part for passenger being projected to the floor of car from image pickup part from directly over observe time projected position; Based on the position relationship of the height of image pickup part, the height of an above-mentioned part of passenger and the position of image pickup part and projected position, calculate from directly over overlook time the standing place of passenger; Based on passenger standing place estimate from directly over overlook in car time whole passenger shared by occupied area; And the degree of congestion of car is judged based on occupied area.
Description
Technical field
The present invention relates to elevator monitoring arrangement and elevator monitoring method.
Background technology
In lift car, the state without leeway congested because of passenger or luggage etc. is called full state.In addition, even if not full, also quantification can be carried out according to the width in congested leeway to congestion state.And, in patent documentation 1, describe top in car or side plate arranges the camera immediately below overlooking, the change of the occupied area on the floor caused by passenger or luggage is measured (paragraph 0006).In addition, a kind of device is described in patent documentation 2, it measures personage's height when personage takes according to the image shot with camera in the car immediately below overlooking, and highly corrects the area (paragraph 0043 ~ 0049) conformed to the passenger etc. detected by background difference based on described personage.In addition, in patent documentation 3, describe height and location (paragraph 0039 ~ 0042) of measuring subject according to the configuration information of the range information to object and camera that are arranged at the three-dimensional camera in car.In addition, in patent documentation 4, describe employing and tiltedly look down the single camera of road to monitor device and the method for vehicle to below.At this, based on the typical size of predetermined full size vehicle and dilly, carry out the correction of the vehicle location obtained with perspective projection.
In addition, arranging at lift car the camera taken precautions against is general fashion, and the image seeking to utilize this strick precaution camera to obtain is measured to the full judgement or degree of congestion of carrying out car.Take precautions against the many corners, depths being arranged at car towards Newel of camera.
Look-ahead technique document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2006-No. 240825 publications
Patent documentation 2: Japanese Unexamined Patent Publication 8-No. 26611 publications
Patent documentation 3: Japanese Unexamined Patent Publication 2001-No. 34883 publications
Patent documentation 4: Japanese Unexamined Patent Publication 2008-No. 299458 publications
The problem that invention will solve
Use the camera looking down floor immediately below the top ceiling court of lift car, such as described in Patent Document 1, it is easier for measuring the occupied area of passenger to floor.But, in the image that the strick precaution camera looking down tiltedly below from car roof corner obtains, in profile, the floor area shared by personage is measured larger than actual occupied area, though so existence to be evaluated as the degree of congestion higher than reality non-full and be judged to be full such problem.
In view of the area of the passenger taken according to camera estimates ridership in patent documentation 2, or the distance of camera and subject nearlyer then passenger area becomes the fact so greatly, by being multiplied by the coefficient of correction corresponding to the height of passenger, correction is applied with to passenger's area.But owing to not carrying out correction looking down from oblique upper, therefore because of the standing place of passenger, the problem of excessive evaluation degree of congestion is also identical with patent documentation 1.
In patent documentation 3, height and the location of measuring object thing can be come according to stereoscopic rangefinding value.But, except taking precautions against except camera, need the camera of the stereoscopic rangefinding adding more than at least 2, so the problem of decline attractive in appearance in the increase that there is installation cost and the car caused because of camera increase.
In patent documentation 4, describe to look down the single camera of road to monitor device and the method for vehicle below tiltedly.At this, based on the typical size of predetermined full size vehicle and dilly, carry out the correction of the vehicle location obtained by perspective projection.If the method is directly applied in lift car, then as the cab area more than the narrow region of road, even if typical personage's height or width are prepared several, correction accuracy is also insufficient, in addition, different from vehicle, exist and be difficult to judge which personage's height or width problem as well of application.
Summary of the invention
, the object of the invention is to for this reason, provide the general strick precaution camera in lift car such processing the image of the camera looking down tiltedly below and the elevator monitoring arrangement that judges of the degree of congestion of carrying out car and elevator monitoring method.
For solving the means of problem
In order to solve this problem, such as, in the elevator monitoring arrangement possessing in the car to elevator the image pickup part arranged obliquely downward taken, have: passenger height meter, it measures the height of a part for passenger for benchmark with the mark of the known height in described car; Passenger tracking portion, it follows the tracks of described passenger based on the image photographed by described image pickup part in described car; Passenger Projection Division, its using the position of a described part for the described passenger in described image on picture as input, calculate when a described part for described passenger being projected to the floor of described car from described image pickup part from directly over observe time projected position; The standing place calculating part of passenger, the height of a described part of its height based on described image pickup part, described passenger and the position relationship between the position of described image pickup part and described projected position, calculate from directly over overlook time the standing place of described passenger; Occupied area estimator, it is based on the standing place of described passenger, estimate from directly over overlook in described car time whole passenger shared by occupied area; And degree of congestion detection unit, it judges the degree of congestion of described car based on described occupied area.
Invention effect
According to the present invention, can process the image of the image pickup part arranged obliquely downward in car, the degree of congestion of carrying out car judges.In addition, problem other than the above, formation and effect are clear and definite by the explanation of following embodiment.
Accompanying drawing explanation
Fig. 1 is the example of the pie graph of elevator monitoring arrangement.
Fig. 2 is the example of the flow process of the process of elevator monitoring arrangement.
Fig. 3 is the example of the image obtained in the setting example of image pickup part in elevator monitoring arrangement and image pickup part.
Fig. 4 is the figure of the projected position of the personage represented in elevator monitoring arrangement and the relation of real standing place.
Fig. 5 is the figure of the projected position towards the personage represented in elevator monitoring arrangement on floor to overlook car immediately below court and the relation of real standing place.
Fig. 6 is the figure of the concrete example representing projective transformation.
Fig. 7 is the figure occupying situation on the floor being estimated car by elevator monitoring arrangement.
Detailed description of the invention
With reference to accompanying drawing, embodiments of the present invention are described.In addition, in the various figures, give identical symbol to same or similar inscape, and omit the description.
Fig. 1 is the example of the pie graph of elevator monitoring arrangement.The elevator monitoring arrangement of present embodiment is made up of calculation control unit 1 and image pickup part 2.Calculation control unit 1 has: the standing place calculating part 6 of passenger height meter 3, passenger tracking portion 4, passenger Projection Division 5, passenger, occupied area estimator 7, degree of congestion detection unit 8, operation control part 9 and efferent 10.Calculation control unit 1 can use the image processing apparatus of embedding or Personal Computer etc. to realize part or all of each function with software.In addition, part or all of each function of calculation control unit 1 can be formed with the hardware of integrated circuit etc.
Operation control part 9 comprises and can from external control, calculation control unit 1 be started or stop or initialized user interface.Efferent 10 has and exports the result of determination of the state of calculation control unit 1 or degree of congestion detection unit 8 to outside function.
Fig. 2 is the figure of the example of the flow process of the process representing elevator monitoring arrangement.Flow process based on the process of Fig. 2 illustrates the formation shown in Fig. 1.The initialization (step s01) in each portion is carried out at once after the beginning of the action of elevator monitoring arrangement.This is the initialization of memory device for the process of calculation control unit 1 or mark (flag).When realizing calculation control unit 1 with Personal Computer, guaranteeing with initialization of memory device is suitable therewith.Calculation control unit 1 after initialization, repeatedly from the Image Acquisition of step s02 to step s08 degree of congestion judge export process.When being back to step s02 from step s08, the interruption or the power supply disconnection that there is not end is confirmed whether in step s09, do not depositing (YES) in situations such as these, carrying out above-mentioned process repeatedly, ending process depositing in situations such as these (no).
Before the details of the flow process of the process of instruction diagram 2, setting example image pickup part 2 being described based on Fig. 3 and the example of image obtained by image pickup part 2.Fig. 3 is the setting example of image pickup part in elevator monitoring arrangement and the example of image that obtained by image pickup part.Fig. 3 (a) is the figure observed from direction, gangway in the car of elevator.And the upper right corner of car depths is provided with and takes precautions against camera as image pickup part 2 in this example embodiment.Fig. 3 (b) and Fig. 3 (c) is the example of the image obtained by image pickup part 2.Fig. 3 (b) shows when elevator door is opened as the moment that the personage 20 of passenger takes, and Fig. 3 (c) shows the situation that personage 20 takes or is detained after elevator door cuts out.
In the flow process of the process of Fig. 2, when passenger passes through the gangway of car, with the mark of the known height in car (gangway etc. of such as car) for benchmark, measure height h or the height h and width w (step s03) of this passenger.Also, as shown in Fig. 3 (b), the size of the reality of the gangway of car can be measured in advance.The height of gangway is set to EH, and the width of gangway is set to EW.In addition, after the arranging of image pickup part 2, height EH and the width EW that can measure entrance are equivalent to how many pixels respectively on the image obtained by image pickup part 2.At this, the pixel count of the short transverse of gangway is set to Hpix, the pixel count of the Width of gangway is set to Wpix.
In step s03, first, image procossing is carried out to the image obtained by image pickup part 2, and detect profile or the boundary rectangle of personage 20 by the difference of the interframe of image that obtained by image pickup part 2 and binary conversion treatment.Such image procossing self is general gimmick, therefore detailed.And, ask for the height of profile or boundary rectangle and the pixel count of width respectively.At this, if the pixel count of the short transverse of the personage 20 on image is set to hpix, the pixel count of the Width of personage 20 is set to wpix, then can calculate based on the ratio of following formula (1), formula (2) the height h and the width w that measure personage 20.
h＝EH×hpix／Hpix…(1)
w＝EW×wpix／Wpix…(2)
In step s03 measured height h etc. personage 20 after continued to follow the tracks of (step s04) as passenger at once.When passenger new is one by one taken by described gangway, in step 03, carry out measured altitude h etc. with above-mentioned method, the object that the passenger becoming step s04 is followed the tracks of.Follow the tracks of process when obtaining image (step s02) at every turn, carry out the comparison of the position on the picture in previous image and the position on current picture by each personage, carry out thus.So in each circulation from step s02 to step s08, the passenger of implementation step s04 follows the tracks of process.On the other hand, the measurement of the height h of the passenger of step s03 is at least once implemented when taking, and therefore about the personage measuring height h and width w, does not carry out any process of step s03 and passes through.Step s04 passenger follow the tracks of in, the height h of the personage measured etc. as personage attribute and subsequently.Therefore, such as, even if be only detained a little while in car as the personage 20 of Fig. 3 (c), the height h of the personage measured when taking and the information of width w also carry out keeping utilizing.In addition, the passenger of step s04 follows the tracks of the tracking can carried out based on pattern match.In addition, such tracking process self is general gimmick, therefore detailed.
In the flow process of the process of Fig. 2, for all passenger of following the tracks of in car, carry out passenger by perspective projection and calculate (step s06) to the projection (step s05) on floor and the standing place of passenger.
First, use Fig. 4 that basic thinking is described.Fig. 4 is the figure of the projected position of the personage represented in elevator monitoring arrangement and the relation of real standing place.Fig. 4 (a) is identical with Fig. 3 (c), is the image that personage 20 is detained.In this image, continue to follow the tracks of from taking by pattern match etc., crown portion when therefore measuring the height h of personage is known in Fig. 4 (a), is positioned at the position shown by A.For this reason, crown portion is projected onto the projected position B of Fig. 4 (b) by perspective projection.And, the distance D to projected position B immediately below image pickup part 2 can be calculated.In addition, from floor to image pickup part, the height H of 2 can be measured after arranging, if therefore measured in advance before the process of this part, then can be set to known value.And, after crown portion A is projected to floor, distance D and height H and measure when taking and follow the tracks of the height h maintained and become known.The numerical value asked for is wanted to be real standing place, that is, from the distance d to standing place immediately below image pickup part 2 at this.And distance d can calculate based on the ratio of following formula (3) and calculate.
d＝{D×(H—h)}／H…(3)
The projected position on the floor at projection head top is carried out by perspective projection, identical with the projected position in the crown portion in the shadow produced during set-point light source irradiation personage 20 on the position of image pickup part 2.This by the situation of the crown portion A of the personage 20 of the height h that to have projected from image pickup part 2 as example.And as other example, as shown in Fig. 4 (c), the height h ' of shoulder can be measured when taking, and shoulder is projected to floor.In the case, ask for the distance D ' of projected position B ' to shoulder immediately below image pickup part 2, according to distance D ' and height H and highly h ', to calculate to ask for immediately below image pickup part 2 to the distance d ' immediately below takeing on just now same ratio.This distance d ' strictly speaking, immediately below the center that there is health with shoulder position immediately below difference, but no better than distance d (Fig. 4 (c)), therefore both can be regarded as standing place, also can carry out correction to ask for standing place to this difference.
In addition, person detecting when taking and for pattern match follow the tracks of pattern obtain undertaken by passenger height meter 3.In addition, the pattern of personage is followed the tracks of and is undertaken by passenger tracking portion 4.
Although be explained above the figure observed from positive side (taking floor as the direction in cross section), as shown in Figure 5, based on the system of axes of two dimension overlooking floor immediately below court, same conclusion is also set up.Fig. 5 is the figure of the projected position towards the personage represented in elevator monitoring arrangement on floor to overlook car immediately below court and the relation of real standing place.In Figure 5, the projected position when crown portion A of the personage 20 represented by hatched example areas being projected to floor from image pickup part 2 is set to B.Grid area 20 ' represents that projection has the position of the profile of personage 20.Floor immediately below image pickup part 2 gets initial point, and is provided as X-axis and the Y-axis of coordinate axle along two walls.If be set to (Dx, Dy) by the coordinate of projected position B, the standing place of personage 20 is set to (dx, dy), then they exist the relation of following formula in the same manner as formula (3).
dx＝{Dx×(H—h)}／H…(4)
dy＝{Dy×(H—h)}／H…(5)
Height H is known from starting most, and h is known when taking for height, and (Dx, Dy) becomes known by perspective projection.Therefore, the standing place (dx, dy) of personage 20 is calculated by formula (4), formula (5).
Next, Fig. 6 is used to illustrate that passenger is to the process in the projection (step s05) on floor.Fig. 6 is the figure of the concrete example representing projective transformation.Fig. 6 (a) be represent from directly over look down the figure of car, Fig. 6 (b) is the figure representing the image shot by image pickup part 2.The position of the expectation on the image of Fig. 6 (b), the crown portion A of such as personage how to be hypothetically projected to from directly over the floor of Fig. 6 (a) overlooked be problem, use projective transformation to solve this problem.
In Fig. 6 (a), the floor immediately below image pickup part 2 specifies initial point O, specify X-axis abreast with the opposite walls of the elevator door of car, specify Y-axis abreast with the left wall of car.The unit of length is set to rice.On the other hand, in Fig. 6 (b), getting picture upper left is initial point 0, and getting picture level direction towards the right side is x-axis, and getting vertical direction is y-axis down.The unit of length is set to pixel count.And, the coordinate of Fig. 6 (a) is expressed as (X, Y)
t, the coordinate of Fig. 6 (b) is expressed as (x, y)
t.The T in the upper right corner represents transposed matrix.From (x, y)
tto (X, Y)
tthe combination being for conversion into rotation transformation, translation transformation, projective transformation, but known they are through type (6), or by formula (6) is out of shape an accepted way of doing sth (6) through formula (6) ' " show.In addition, formula (6) " expression of the K that has been cancellation.At this, sometimes also by (x, y)
tbe called camera coordinate (coordinate on image), by (X, Y)
tbe called ground coordinate (from directly over overlook time coordinate).
In formula (6) etc., K is the variable relevant to the distance of image pickup part 2 and subject, C
11~ C
32be according to image pickup part 2 apart from the height on floor, towards so-called camera parameters such as, amplification rates and the numerical value determined, can ask in advance.At this, C
11~ C
32by so-called camera calibration (cameracalibration), the known group of camera coordinate and ground coordinate is prepared more than 4 groups, ask for parameter C
11~ C
32.Ask for the known coordinate figure of more than 4 groups, on the floor of elevator, such as give the mark of more than 4 of not being on a straight line, actual measurement not by means of only tape measure etc. obtains these ground coordinatees marked, and obtain camera coordinate by the coordinate of the mark position on image, can ask for thus.
At C
11~ C
32become by camera calibration known after, by formula (6) " distortion and the formula (7) that obtains, can by the arbitrary coordinate (x, y) on the image of Fig. 6 (b)
tbe transformed into the coordinate (X, Y) when overlooking directly over Fig. 6 (b)
t.
For this reason, in the process of passenger to the projection (step s05) on floor, passenger Projection Division 5, based on the coordinate of the crown portion A on the image of Fig. 6 (b), calculates coordinate when overlooking directly over projected position B when crown portion A is projected to floor by the image pickup part 2 from Fig. 6 (a).
Next, calculate in the process of (step s06) in the standing place of passenger, standing place calculating part 6 through type (3) of passenger or formula (4), (5), based on the height H of image pickup part 2, the height h of passenger, position relationship (such as distance D, coordinate (Dx between the position of image pickup part 2 and projected position B, Dy), distance Dx, distance Dy etc.), come in scaling system 6 (a) from directly over overlook time the coordinate coordinate of crown portion A (in the case for) of standing place of passenger.In addition, formula (3) can utilize when using polar coordinate system, and formula (4), (5) can utilize when using XY system of axes.
Passenger described above calculates (step s06) to the projection (step s05) on floor and the standing place of passenger and carries out for the whole passenger in car.
In addition, as make use of the example of shoulder in Fig. 4 (c), the height that passenger height meter 3 measures a part of A (such as the specific part such as crown portion or shoulder) of passenger is used as height h, passenger Projection Division 5 using the coordinate of a part of A of passenger corresponding to height h therewith on picture as input, can ask for when a part of A of passenger being projected to floor from image pickup part 2 from directly over observe time projected position B.In addition, be contemplated to be as the part of passenger of the object of projection and be difficult to cover when crowded into the crown portion etc. in shelter part high as far as possible.And, the standing place calculating part 6 of passenger can based on the height H of image pickup part 2, the height h of a part of A of passenger, and the position relationship between the position of image pickup part 2 and projected position B, calculate from directly over overlook time the coordinate of standing place of passenger (be the coordinate of a part of A of passenger in the case, but it is such as known when being the specific positions such as shoulder, such as can use and play the numerical value such as distance till a part of A from the center of passenger to be corrected to the coordinate of the center of passenger, coordinate as the standing place of passenger uses).
The occupied area of the passenger in the flow process of the then process of instruction diagram 2 is estimated and degree of congestion judges (step s07).Fig. 7 is the figure occupying situation being estimated the floor of car by elevator monitoring arrangement.The concept map of Fig. 7 (a) image that to be hypothesis obtain from immediately below the quite high position of the top ceiling of car is looked down.Rectangular area represents cab area 30, and point retouches the region 31 that region is the floor seeing car.And oblique line portion is the region 32 that passenger occupies floor.Can think: along with the ratio in region 31 reduces, degree of congestion can increase.And, if the total area in region 31 is less than the amount of a people, then can think congested to being judged as full without the crowded of leeway degree.According to the present embodiment, can as general strick precaution camera, the image that the image pickup part 2 being arranged at car corner obtains is processed, obtain the such image of Fig. 7 or image approximate with it, ask for the occupation rate relative to floor such as personage or luggage, the degree of congestion of carrying out car judges.
Fig. 7 (b) is standing place based on the passenger obtained in step s06 and estimates the image occupying situation on the floor of car.Centered by the standing place of passenger (coordinate of A) and be estimated as the region occupied by personage with the region 33 of the circle of the width w of the passenger grid pattern that is diameter.And, region 31 be can see floor region and congestedly have region more than needed.Size based on this area judges degree of congestion, is judged to be full when region 31 becomes and is less than people's amount.At this, width w both can be used in the width measured when taking, and also can be omitted in when taking and measure width w, and use the given width preset.
And in fact, the major part of occupying region occupied by passenger is not round, but with the Elliptical circle region that two shoulders are major axis.For this reason, can statistically ask for the ratio of occupying major axis when region be similar to and minor axis of Elliptical circle to personage in advance, the Elliptical circle that occupies being major axis with width w is configured at standing place, estimates as Fig. 7 (c1) and Fig. 7 (c2).Fig. 7 (c1) makes the short-axis direction towards the region 33 with Elliptical circle of the face of passenger consistent.In order to realize it, such as step s04 carry out detecting when passenger is followed the tracks of face feature to detect face towards.On the other hand, Fig. 7 (c2) and passenger face towards the region 33 independently configuring Elliptical circle.In this fashion without the need to detect face towards.In addition, though passenger towards different from reality, owing to occupying the area of the floor of car also without large difference, therefore to judge the degree of congestion or full of car, with passenger towards independently configure Elliptical circle region 33 enough.
Occupied area estimator 7 such as shown in Figure 7, based on the standing place of the passenger that the standing place calculating part 6 by passenger is obtained, create represent from directly over overlook in car time the estimated image in region that occupies of passenger, and estimate the occupied area shared by whole passenger.
The occupied area of degree of congestion detection unit 8 shared by the whole passenger estimated by occupied area estimator 7 judges degree of congestion.As the example of degree of congestion, such as, both can represent relative to the ratio of the area of the car known in advance with the occupied area shared by the whole passenger estimated by occupied area estimator 7, also this ratio or occupied area can be divided into several stage and with multiple grades of large, medium and small or 1,2,3 etc. to represent degree of congestion.In addition, if be thought of as full by situation maximum for degree of congestion, then full judgement also can be included in the judgement of this degree of congestion.In addition, only fullly to whether namely to judge, be also contained in the concept of the judgement of degree of congestion.As full decision method, the area (deducting the occupied area of passenger from the area of car) that there is floor be less than given threshold value (such as 1 people divides) if situation or degree of congestion or occupied area be represent more than full given threshold value; be judged to be full method etc.
Next, judge in degree of congestion to export in the process of (step s08), efferent 10 exports the result of determination (degree of congestion or whether full etc.) of degree of congestion detection unit 8.
Then, based on this degree of congestion, not shown elevator control gear judges that output controls elevator.Such as, even if having hall calls to register without the predetermined layer of stopping when full, do not respond hall calls yet and pass through to wait control.
Above, according to the present embodiment, process the image of the image pickup part arranged obliquely downward in car, the degree of congestion carrying out car judges.
In addition, the invention is not restricted to above-mentioned embodiment, comprise various variation.Such as, above-mentioned embodiment the present invention is described in order to understandable and be described in detail, but without the need to being defined as whole formations that must possess and illustrate.
Nomenclature
1 calculation control unit
2 image pickup parts
3 passenger height meter
4 passenger tracking portions
5 passenger Projection Divisions
The standing place calculating part of 6 passenger
7 occupied area estimators
8 degree of congestion detection units
9 operation control parts
10 efferents
20 personages
Claims (6)
1. an elevator monitoring arrangement, possesses in the car to elevator the image pickup part arranged obliquely downward taken,
The feature of described elevator monitoring arrangement is to have:
Passenger height meter, it measures the height of a part for passenger for benchmark with the mark of the known height in described car;
Passenger tracking portion, it follows the tracks of described passenger based on the image photographed by described image pickup part in described car;
Passenger Projection Division, its using the position of a described part for the described passenger in described image on picture as input, calculate when a described part for described passenger being projected to the floor of described car from described image pickup part from directly over observe time projected position;
The standing place calculating part of passenger, the height of a described part of its height based on described image pickup part, described passenger and the position relationship between the position of described image pickup part and described projected position, calculate from directly over overlook time the standing place of described passenger;
Occupied area estimator, it is based on the standing place of described passenger, estimate from directly over overlook in described car time whole passenger shared by occupied area; And
Degree of congestion detection unit, it judges the degree of congestion of described car based on described occupied area.
2. elevator monitoring arrangement according to claim 1, is characterized in that,
Described passenger height meter also measures the width of described passenger,
Described occupied area estimator also utilizes the width of described passenger to estimate the occupied area shared by described whole passenger.
3. elevator monitoring arrangement according to claim 1 and 2, is characterized in that,
Whether described degree of congestion detection unit judges in described car full.
4. an elevator monitoring method, uses in the car to elevator the image taken by the image pickup part arranged obliquely downward taken to monitor,
The feature of described elevator monitoring method is,
Measure the height of a part for passenger for benchmark with the mark of the known height in described car; Based on the image photographed by described image pickup part, in described car, follow the tracks of described passenger; Using the position of a described part for the described passenger in described image on picture as input, calculate when a described part for described passenger being projected to the floor of described car from described image pickup part from directly over observe time projected position; Based on the height of described image pickup part, the height of a described part for described passenger and the position relationship between the position of described image pickup part and described projected position, calculate from directly over overlook time the standing place of described passenger; Based on the standing place of described passenger, estimate from directly over overlook in described car time whole passenger shared by occupied area; And based on described occupied area, judge the degree of congestion of described car.
5. elevator monitoring method according to claim 4, is characterized in that,
Also measure the width of described passenger, also utilize the width of described passenger to estimate the occupied area shared by described whole passenger.
6. the elevator monitoring method according to claim 4 or 5, is characterized in that,
Whether full the judgement of described degree of congestion to comprise in described car judgement.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013012774A JP6033695B2 (en) | 2013-01-28 | 2013-01-28 | Elevator monitoring device and elevator monitoring method |
| JP2013-012774 | 2013-01-28 |
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| CN103964271A CN103964271A (en) | 2014-08-06 |
| CN103964271B true CN103964271B (en) | 2016-04-20 |
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