CN106951885A - A kind of people flow rate statistical method based on video analysis - Google Patents

A kind of people flow rate statistical method based on video analysis Download PDF

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CN106951885A
CN106951885A CN201710225976.2A CN201710225976A CN106951885A CN 106951885 A CN106951885 A CN 106951885A CN 201710225976 A CN201710225976 A CN 201710225976A CN 106951885 A CN106951885 A CN 106951885A
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video
pedestrian
detection
people
head
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李洁婷
李廷会
范佳欣
何丹妮
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Guangxi Normal University
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Guangxi Normal University
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00Scenes; Scene-specific elements
    • G06V20/50Context or environment of the image
    • G06V20/52Surveillance or monitoring of activities, e.g. for recognising suspicious objects
    • G06V20/53Recognition of crowd images, e.g. recognition of crowd congestion
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F18/00Pattern recognition
    • G06F18/20Analysing
    • G06F18/21Design or setup of recognition systems or techniques; Extraction of features in feature space; Blind source separation
    • G06F18/214Generating training patterns; Bootstrap methods, e.g. bagging or boosting
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F18/00Pattern recognition
    • G06F18/20Analysing
    • G06F18/24Classification techniques
    • G06F18/241Classification techniques relating to the classification model, e.g. parametric or non-parametric approaches
    • G06F18/2411Classification techniques relating to the classification model, e.g. parametric or non-parametric approaches based on the proximity to a decision surface, e.g. support vector machines
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00Arrangements for image or video recognition or understanding
    • G06V10/40Extraction of image or video features
    • G06V10/50Extraction of image or video features by performing operations within image blocks; by using histograms, e.g. histogram of oriented gradients [HoG]; by summing image-intensity values; Projection analysis
    • G06V10/507Summing image-intensity values; Histogram projection analysis
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00Indexing scheme for image analysis or image enhancement
    • G06T2207/10Image acquisition modality
    • G06T2207/10016Video; Image sequence
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00Indexing scheme for image analysis or image enhancement
    • G06T2207/30Subject of image; Context of image processing
    • G06T2207/30196Human being; Person
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00Indexing scheme for image analysis or image enhancement
    • G06T2207/30Subject of image; Context of image processing
    • G06T2207/30232Surveillance
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00Indexing scheme for image analysis or image enhancement
    • G06T2207/30Subject of image; Context of image processing
    • G06T2207/30242Counting objects in image

Abstract

The invention provides a kind of people flow rate statistical method based on video analysis, at least one set of pedestrian that the video is shot using camera from top area monitors Sample video and one group of pedestrian's monitor and detection video, and the demographic method comprises the following steps:S10:The number of people image in pedestrian's monitoring Sample video and detection video is gathered, positive sample training image collection and the negative sample training image collection is built;S20:HOG is extracted respectively;S30:The off-line training of SVM heads grader is carried out to the gradient orientation histogram feature for training input picture;S40:Real-time head detection;S50:Target following is carried out using optical flow method;S60:ROI is set;S70:Statistical number of person.The inventive method can be counted to the flow of the people of specific region, and check picture not in the same time in mobile phone terminal, relative to the method for human testing, can avoid the problem of detection target is blocked mutually;Build on wide variety of video monitoring equipment, low cost, statistical accuracy are high.

Description

A kind of people flow rate statistical method based on video analysis
Technical field
The present invention relates to a kind of IMAQ analytical technology, more particularly to a kind of people flow rate statistical side based on video analysis Method.
Background technology
In the management and decision-making of the public places such as market, airport, museum, flow of the people is indispensable data, with Exemplified by market, flow of the people is very basic and important index, and the sale with market is closely related, by flow of the people, can be pin Sell, service and the reliable reference information of logistics offer.In some regions, flow of the people as the control area density of population parameter, It is a significant consideration of its security again.So, by the statistics to flow of the people, can effectively it monitor in real time, group The operation of public place is knitted, environment and the better service of safety are provided for people.
At present, the method for obtaining pedestrian's traffic statistics can be largely classified into three major types:1st, artificial statistics or contact equipment; 2nd, pedestrian's traffic statistics are carried out using sensor;3rd, the people flow rate statistical based on computer vision.Using manually to pedestrian's flow Counted, although precision can meet requirement, but consume manpower, financial resources, and not possess systemic and comprehensive;Rotation The contact equipment such as door, rotating handles, although departing from artificial, but bring inconvenience, and one time one to pedestrian to force sense As people's stream statistics of public sphere can not only be suitable for by a people;And detect what human body was counted using sensor Method, most widely used at present is infrared detection system, is also mainly used in passage, and such system is contactless, is compared Contact equipment is greatly improved.But in actual motion there is also it is very important the problem of, or such as using single People's passage limit the big flow stream of people by convenience, and when using fat pipe when, multiple pedestrians are consecutively or simultaneously by red During outer device, just occur and block, the degree of accuracy of demographics will be substantially reduced, in addition, single pedestrian is in the temporary of detection zone When stop, or body and belongings interference, very big influence can be also brought to the accuracy of statistics.
The content of the invention
It is contemplated that at least solving technical problem present in prior art or correlation technique.
In recent years, along with the development of the correlation techniques such as computer vision, pattern-recognition and artificial intelligence, the field of application Also gradually expanding, video monitoring system is increasingly widely used in the every aspect of people's life.To video sequence In pedestrian extract, identification and tracking on the basis of, further carry out accurate demographics for the present invention a kind of thought.
Therefore, the invention provides a kind of people flow rate statistical method based on video analysis, the video is using taking the photograph As at least one set of pedestrian monitoring Sample video and one group of pedestrian's monitor and detection video that head is shot from top area, the number system Meter method comprises the following steps:
S10:The number of people image in pedestrian's monitoring Sample video is gathered, so that positive sample training image collection is constituted, with described Those in pedestrian's monitoring Sample video in addition to number of people image are not pedestrian heads but the image conduct of doubtful pedestrian head Negative sample training image collection, and the positive sample training image collection and the negative sample training image collection are normalized Into the training input picture of an equal amount of size;The monitoring of statistical number of person the need for gathering in pedestrian's monitor and detection video Area image frame;
S20:The gradient orientation histogram feature of training input picture and monitor area picture frame is extracted respectively(HOG);Gradient side To histogram feature(HOG)The gradient direction of mainly localized region is calculated, and is then described with histogram, i.e., in fact A kind of feature descriptor of image local overlapping region;
S30:The off-line training of SVM heads grader is carried out to the gradient orientation histogram feature for training input picture, a large amount of Positive sample training image collection and the negative sample training image collection after step S20 processing are input to SVMs mould It is trained in type, obtains the optimum classifier being directed under these training samples;SVMs(SVM)It is that a kind of effort is sought A kind of machine learning method of structural risk minimization;
S40:Real-time head detection, the monitor area picture frame of the detection video sequence after step S20 processing is input to In the grader trained, by setting detection window moving step length and scaling the dimension scale of abstract image window, detection is allowed Window is scanned on different positions, differentiates that these windows are that head zone is also non-head according to the result of decision of grader Portion region, finally marks the position on head in the video sequence;
S50:Target following is carried out using optical flow method, realize the head movement in video frame image is carried out lasting detection, With the tracking with location updating message;
S60:ROI is set, area-of-interest is realized using the setting of the ROI inside opencv, detachment's area-of-interest is carried out Processing;Area-of-interest can arbitrarily be set according to actual requirement, so that improving system obtains practicality;
S70:Statistical number of person, according to the movement locus on head, contrast is imported and exported mark and can determine whether into outgoing direction, when moving object is first Encounter import mark and then proceed to motion and encounter exit marking to enter behavior, when moving object first encounter exit marking then after Reforwarding is dynamic to encounter import labeled as behavior of going out, and finally, turnover behavior is judged according to mark and head movement track is imported and exported, with Realize the counting statistics of number.
Invention has advantages below and beneficial effect compared with prior art:
The demographic method of sequence and image processing techniques, builds on wide variety of video monitoring equipment, low cost, should It is high with wide, statistical accuracy.
Further, also including step S80:The picture detected, is saved as img.jpg formatted files by remote inquiry, A notice is sent out to pathon programs while preservation, picture file server is saved in, then send to remote control terminal Notify, control terminal parsing sending out notice, by the picture in agreement request server to obtain demographics result.
Including procedure below further, in step s 40,:
S41:By Zheng Tu areas video;
S42:Interaction window travels through and splits each frame;
S43:The cognitron that the image input training that segmentation is completed is completed is judged;
S44:Use rectangle frame standard people's head region;
S45:Rectangle frame is repeated to merge.
Further, in step S60, including procedure below:
S61:Video acquisition;
S62:Reset;
S63:ROI areas are set;
S64:Mark ROI areas;
S65:To ROI region processing;
S66:Cancel ROI.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined Substantially and be readily appreciated that, wherein:
Fig. 1 shows the flow chart according to the inventive method;
The sub-process figure of the real-time head detection process of Fig. 2 the inventive method;
Fig. 3 is the flow chart of the setting ROI region of the inventive method.
Embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention Mode is applied the present invention is further described in detail.It should be noted that in the case where not conflicting, the implementation of the application Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description in order to fully understand the present invention, and still, the present invention may be used also Implemented with being different from other modes described here using other, therefore, protection scope of the present invention is not by described below Specific embodiment limitation.
With reference to Fig. 1, to an a kind of specific embodiment of demographic method based on video analysis of the present invention It is specifically described.
The invention provides a kind of demographic method based on video analysis, the video is clapped using camera At least one set of pedestrian monitoring Sample video taken the photograph and one group of pedestrian's monitor and detection video, as shown in figure 1, the demographic method Comprise the following steps:
S10:The number of people image in pedestrian's monitoring Sample video is gathered, so that positive sample training image collection is constituted, with described Those in pedestrian's monitoring Sample video in addition to number of people image are not pedestrian heads but the image conduct of doubtful pedestrian head Negative sample training image collection, and the positive sample training image collection and the negative sample training image collection are normalized Into the training input picture of an equal amount of size;The monitoring of statistical number of person the need for gathering in pedestrian's monitor and detection video Area image frame.Due to the head sample-size disunity of Manual interception, should not as training input picture, we must be by The picture of interception zooms to an equal amount of size, is normalized as 32(Pixel)×32(Pixel).
S20:The gradient orientation histogram feature of training input picture and monitor area picture frame is extracted respectively(HOG);Ladder Spend direction histogram feature(HOG)The gradient direction of mainly localized region is calculated, and is then described with histogram, i.e., A kind of feature descriptor of image local overlapping region in fact.
S30:The off-line training of SVM heads grader is carried out to the gradient orientation histogram feature for training input picture, A large amount of positive sample training image collections after step S20 processing and the negative sample training image collection are input to supporting vector It is trained in machine model, obtains the optimum classifier being directed under these training samples.SVMs(SVM)It is a kind of effort Seek a kind of machine learning method of structural risk minimization;
S40:Real-time head detection, the monitor area picture frame of the detection video sequence after step S20 processing is input to In the grader trained, by setting detection window moving step length and scaling the dimension scale of abstract image window, detection is allowed Window is scanned on different positions, differentiates that these windows are that head zone is also non-head according to the result of decision of grader Portion region, finally marks the position on head in the video sequence.
S50:Target following is carried out using optical flow method, realizes and lasting inspection is carried out to the head movement in video frame image Survey, matching and the tracking of location updating message.Optical flow method is used for the principle of target following:1)To a continuous sequence of frames of video Carry out processing 2)For each video sequence, using certain object detection method, the foreground target 3 being likely to occur is detected) If a certain frame occurs in that foreground target, its representative key point is found.
S60:ROI is set, area-of-interest, detachment's area-of-interest are realized using the setting of the ROI inside opencv Handled;Area-of-interest can arbitrarily be set according to actual requirement, so that improving system obtains practicality.In order to pass in and out people The statistics of mouth, detects the number of people, and train the picture process of acquisition under off-line state by the way of vertical camera Grader, then design and Implement passenger number statistical system.
S70:Statistical number of person, according to the movement locus on head, contrast imports and exports mark and can determine whether, into outgoing direction, to work as moving object Body, which first encounters import mark and then proceedes to motion, to be encountered exit marking to enter behavior, and when moving object, first to encounter exit marking right Follow-up reforwarding is dynamic to encounter import labeled as behavior of going out, and finally, judges according to mark and head movement track is imported and exported into trip For to realize the counting statistics of number.
S80:The picture detected, is saved as img.jpg formatted files by remote inquiry, to pathon journeys while preservation Sequence sends out a notice, and picture file is saved in into server, then sends notice to remote control terminal, and control terminal parsing is pushed Notify, by the picture in agreement request server to obtain demographics result.Specifically picture is stored in into Chinese shifting Dynamic server(OneNet), then to mobile phone terminal transmission notice, mobile phone terminal parsing sending out notice passes through Http agreements, request OneNet picture.
This method is counted using computer vision technique to the flow of the people of specific region, it is possible to checked in mobile phone terminal Not picture in the same time.For the method for human testing, it can significantly avoid detecting asking of blocking mutually of target Topic.Pedestrian head detection is used based on gradient orientation histogram(HOG)Feature extraction, linear SVM(SVM)Make For the detection method of grader, pedestrian is tracked using optical flow method.Build on wide variety of video monitoring equipment, into This low, wide application, statistical accuracy are high.
Further, as shown in Fig. 2 in step s 40, including procedure below:
S41:By Zheng Tu areas video;
S42:Interaction window travels through and splits each frame;
S43:The cognitron that the image input training that segmentation is completed is completed is judged;
S44:Use rectangle frame standard people's head region;
S45:Rectangle frame is repeated to merge.
Further, as shown in figure 3, in step S60, including procedure below:
S61:Video acquisition;
S62:Reset;
S63:ROI areas are set;
S64:Mark ROI areas;
S65:To ROI region processing;
S66:Cancel ROI.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent, improvement etc., should be included within the scope of the present invention.

Claims (4)

1. a kind of people flow rate statistical method based on video analysis, the video is shot using camera from top area At least one set of pedestrian's monitoring Sample video and one group of pedestrian's monitor and detection video, the demographic method comprise the following steps:
S10:The number of people image in pedestrian's monitoring Sample video is gathered, so that positive sample training image collection is constituted, with described Those in pedestrian's monitoring Sample video in addition to number of people image are not pedestrian heads but the image conduct of doubtful pedestrian head Negative sample training image collection, and the positive sample training image collection and the negative sample training image collection are normalized Into the training input picture of an equal amount of size;The monitoring of statistical number of person the need for gathering in pedestrian's monitor and detection video Area image frame;
S20:The gradient orientation histogram feature of training input picture and monitor area picture frame is extracted respectively(HOG);Gradient side To histogram feature(HOG)The gradient direction of mainly localized region is calculated, and is then described with histogram, i.e., in fact A kind of feature descriptor of image local overlapping region;
S30:The off-line training of SVM heads grader is carried out to the gradient orientation histogram feature for training input picture, a large amount of Positive sample training image collection and the negative sample training image collection after step S20 processing are input to SVMs mould It is trained in type, obtains the optimum classifier being directed under these training samples;SVMs(SVM)It is that a kind of effort is sought A kind of machine learning method of structural risk minimization;
S40:Real-time head detection, the monitor area picture frame of the detection video sequence after step S20 processing is input to In the grader trained, by setting detection window moving step length and scaling the dimension scale of abstract image window, detection is allowed Window is scanned on different positions, differentiates that these windows are that head zone is also non-head according to the result of decision of grader Portion region, finally marks the position on head in the video sequence;
S50:Target following is carried out using optical flow method, realize the head movement in video frame image is carried out lasting detection, With the tracking with location updating message;
S60:ROI is set, area-of-interest is realized using the setting of the ROI inside opencv, detachment's area-of-interest is carried out Processing;
S70:Statistical number of person, according to the movement locus on head, contrast is imported and exported mark and can determine whether into outgoing direction, when moving object is first Encounter import mark and then proceed to motion and encounter exit marking to enter behavior, when moving object first encounter exit marking then after Reforwarding is dynamic to encounter import labeled as behavior of going out, and finally, turnover behavior is judged according to mark and head movement track is imported and exported, with Realize the counting statistics of number.
2. the people flow rate statistical method according to claim 1 based on video analysis, it is characterised in that also including step
S80:The picture detected, is saved as img.jpg formatted files by remote inquiry, is sent out while preservation to pathon programs One notice, server is saved in by picture file, then sends notice to remote control terminal, and control terminal parsing pushes logical Know, by the picture in agreement request server to obtain demographics result.
3. the people flow rate statistical method according to claim 1 based on video analysis, it is characterised in that in step s 40, Including procedure below:
S41:By Zheng Tu areas video;
S42:Interaction window travels through and splits each frame;
S43:The cognitron that the image input training that segmentation is completed is completed is judged;
S44:Use rectangle frame standard people's head region;
S45:Rectangle frame is repeated to merge.
4. the people flow rate statistical method according to claim 3 based on video analysis, it is characterised in that in step S60, Including procedure below:
S61:Video acquisition;
S62:Reset;
S63:ROI areas are set;
S64:Mark ROI areas;
S65:To ROI region processing;
S66:Cancel ROI.
CN201710225976.2A 2017-04-08 2017-04-08 A kind of people flow rate statistical method based on video analysis Pending CN106951885A (en)

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CN107396047A (en) * 2017-07-25 2017-11-24 国网江苏省电力公司南通供电公司 Inlet/outlet programming count long-distance management system
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CN109389016A (en) * 2017-08-10 2019-02-26 株式会社日立制作所 A kind of method and system that the number of people counts
CN109389016B (en) * 2017-08-10 2023-04-07 株式会社日立制作所 Method and system for counting human heads
CN108256462A (en) * 2018-01-12 2018-07-06 北京航空航天大学 A kind of demographic method in market monitor video
CN108257420A (en) * 2018-02-11 2018-07-06 江苏金海星导航科技有限公司 Meter people based on camera counts vehicle method, apparatus and system
CN108388883A (en) * 2018-03-16 2018-08-10 广西师范大学 A kind of video demographic method based on HOG+SVM
CN108647615A (en) * 2018-04-28 2018-10-12 东莞市华睿电子科技有限公司 A kind of cinema steals a ride the implementation method of early warning
CN108615020A (en) * 2018-04-28 2018-10-02 东莞市华睿电子科技有限公司 A kind of floating population number statistical method in video monitoring regional
CN109101929A (en) * 2018-08-16 2018-12-28 新智数字科技有限公司 A kind of pedestrian counting method and device
CN109272487A (en) * 2018-08-16 2019-01-25 北京此时此地信息科技有限公司 The quantity statistics method of crowd in a kind of public domain based on video
CN111209781B (en) * 2018-11-22 2023-05-23 珠海格力电器股份有限公司 Method and device for counting indoor people
CN111209781A (en) * 2018-11-22 2020-05-29 珠海格力电器股份有限公司 Method and device for counting number of people in room
CN110781735A (en) * 2019-09-18 2020-02-11 重庆特斯联智慧科技股份有限公司 Alarm method and system for identifying on-duty state of personnel
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CN114187666A (en) * 2021-12-23 2022-03-15 中海油信息科技有限公司 Identification method and system for watching mobile phone while walking
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Application publication date: 20170714