CN115393778B - Method for realizing positioning of production personnel based on video monitoring and video monitoring system thereof - Google Patents
Method for realizing positioning of production personnel based on video monitoring and video monitoring system thereof Download PDFInfo
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- CN115393778B CN115393778B CN202211330816.1A CN202211330816A CN115393778B CN 115393778 B CN115393778 B CN 115393778B CN 202211330816 A CN202211330816 A CN 202211330816A CN 115393778 B CN115393778 B CN 115393778B
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- G—PHYSICS
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- G06V20/40—Scenes; Scene-specific elements in video content
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- G06T7/70—Determining position or orientation of objects or cameras
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- G06V20/50—Context or environment of the image
- G06V20/52—Surveillance or monitoring of activities, e.g. for recognising suspicious objects
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention relates to a personnel positioning method, in particular to a method for realizing positioning of production personnel based on video monitoring and a video monitoring system thereof. The positioning method comprises the following steps that when a producer enters a video monitoring area, a video monitoring device takes a snapshot of an image, an algorithm server stores a picture containing the producer, extracts height data of the producer in the picture, calculates the distance between the producer and a called video monitoring device, obtains the deflection angle between the producer and a specific direction, and further obtains the coordinate of the producer according to the distance between the producer and the called video monitoring device and the deflection angle between the producer and the specific direction. The positioning method does not need to wear additional equipment or devices for assisting positioning by production personnel.
Description
Technical Field
The invention relates to a personnel positioning method, in particular to a method for realizing positioning of production personnel based on video monitoring and a video monitoring system thereof.
Background
Safety production accidents easily occur in chemical enterprises, and in order to strengthen safety management, governments require that each enterprise accelerate the construction and application work of the automatic positioning system of the personnel of the dangerous chemical enterprise.
The positioning technologies in the current market mainly include the following: UWB positioning, wiFi positioning, bluetooth positioning, RFID positioning. The above several personnel positioning methods require additional hardware deployment and wiring, and the higher the precision requirement, the more intensive the hardware deployment, which may result in excessive cost. How to position personnel by means of existing equipment in a chemical plant area can help enterprises to save cost is a new research and development direction.
Disclosure of Invention
Aiming at the problems, the invention provides a method for realizing positioning of production personnel based on video monitoring and a video monitoring system thereof, which solve the problems of new harm and high cost possibly caused by adding new hardware or wiring for positioning the production personnel at present and realize the positioning of the production personnel by utilizing the existing monitoring equipment.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention relates to a method for realizing positioning of production personnel based on video monitoring, which comprises the following steps,
the method comprises the following steps: when a producer enters a video monitoring area, calling an image snapshot function of a video monitoring device to acquire a picture containing the producer, and storing the picture containing the producer by an algorithm server for subsequent calculation;
step two: extracting the height of the producer in the picture containing the producer obtained in the first step, and calculating the distance between the producer and the called video monitoring device according to the parameters of the video monitoring device and the parameters of the producer;
step three: obtaining a deflection angle of the production personnel from a specific direction, wherein the coordinates of the called video monitoring device are known, and the specific direction comprises but is not limited to a true east direction, a true west direction, a true south direction and a true north direction;
step four: and further calculating according to the distance between the producer and the called video monitoring device and the deflection angle between the producer and the specific direction, and further obtaining the coordinates of the producer.
According to the method for realizing personnel positioning based on video monitoring, in the second step, the focal length of a camera of a video monitoring device is known as f, W is the actual height of a producer, the height of the worker at a production site is known, W is the height of the producer after imaging, and the sum of the number of pixels in imaging and the height of the worker after imaging is calculatedThe height product corresponding to a single pixel is obtained, b is the straight-line distance between a production person and the video monitoring device, and the relationship among f, b, W and W is as follows: b/f = W/W. After the video monitoring device is calibrated, the focal length value is known, the linear distance b between a producer and the video monitoring device can be calculated according to the formula b = f × W/W, the video monitoring device and the producer form a right-angle trapezoidal geometric figure, the height W of the producer and the height W after imaging are known, the ground height a of the video monitoring device is known, the linear distance b between the producer and the video monitoring device is calculated according to the formula d =
The ground distance d between a producer and the video monitoring device can be calculated in real time.
According to the method for realizing personnel positioning based on video monitoring, the deflection angles of a video monitoring device and production personnel relative to the designated direction are as follows, m is equivalent to the pixel distance from the production personnel to the leftmost side on the image containing the production personnel to be captured, h is equivalent to the pixel distance from the production personnel to the rightmost side on the image containing the production personnel to be captured, the deflection angle of the video monitoring device relative to a certain positioning direction is i, the wide angle of a camera is j, D is the position of the production personnel, A, B and C are vertexes of an isosceles triangle formed by the wide-angle extension line of the camera and a straight line passing through D, and therefore according to a formula: p = i-j/2+ (m/(m + h)). J, the angle of deflection P of the producer relative to a certain orientation direction can be derived.
According to the method for realizing personnel positioning based on video monitoring, according to the ground distance d between a producer and video monitoring equipment and the deflection angle P of the producer relative to the due north direction, assuming that the coordinates of a camera are (x, y, z), the coordinates (x 1, y1, z 1) of the producer are solved, and then: y1=0, x1= d cos, z1= d sinp, and finally the coordinates of the production person are (d cos, 0, d sinp).
According to the method for realizing personnel positioning based on video monitoring, in the first step, production personnel enter the visual range of a video monitoring device, the video monitoring device sends a prompt to an algorithm server, the algorithm server calls the image snapshot function of the video monitoring device, and the snapshot image containing the production personnel is stored in the algorithm server.
According to the method for realizing personnel positioning based on video monitoring, in the first step, the height of the producer is known.
According to the method for realizing personnel positioning based on video monitoring, the specific direction is one of the true east, the true west, the true south and the true north.
The invention discloses a video monitoring system for realizing a method for realizing personnel positioning based on video monitoring, which comprises a video monitoring device, an algorithm server and a terminal display device, wherein the terminal display device displays calculated positioning coordinates, the video monitoring device is in communication connection with the algorithm server, the terminal display device is in communication connection with the algorithm server, a terminal display controls the operation of the algorithm server and the video monitoring device, and the terminal display also displays a monitoring video of the video monitoring device.
The invention has the following beneficial effects:
firstly, the personnel positioning method can prolong the use of the existing video monitoring device in an enterprise, and can save the enterprise cost by acquiring the coordinates of production personnel in a video monitoring range based on video monitoring.
Secondly, the positioning method does not need production personnel to wear additional equipment or devices to assist in positioning, and is lighter and more convenient.
Moreover, the circuit environment change of a production field caused by adding extra equipment or devices and wiring is avoided, and potential safety hazards are avoided.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a flowchart illustrating steps of a method for implementing positioning of production personnel based on video monitoring according to the present invention;
FIG. 2 is a schematic diagram of a camera imaging principle of a method for implementing positioning of production personnel based on video monitoring according to the present invention;
FIG. 3 is a diagram illustrating calculation of a distance between a person and a camera for implementing a method for positioning a production person based on video surveillance according to the present invention;
fig. 4 is a diagram for calculating the deflection angle between a person and a designated direction in a method for realizing positioning of production personnel based on video monitoring according to the present invention.
Detailed Description
The following examples are further detailed in conjunction with the accompanying drawings:
the video monitoring system for realizing the method for positioning the production personnel is realized based on the original video monitoring hardware system and specifically comprises a video monitoring device, an algorithm server and a terminal display device. The video monitoring device is in communication connection with the algorithm server, the terminal display controls the operation of the algorithm server and the video monitoring device, and the terminal display also displays the monitoring video of the video monitoring device and displays the calculated positioning coordinates.
As shown in fig. 1, the method for positioning a production staff based on the video monitoring system specifically includes the following steps:
step one, a producer enters a visual range of a video monitoring device, and the video monitoring device sends a prompt to an algorithm server; the algorithm server calls an image snapshot function of the video monitoring device, and the snapshot image containing the production personnel is stored in the algorithm server;
step two, the algorithm server calls a personnel positioning algorithm, firstly calculates the distance between the production personnel and the video monitoring device, then calculates the ground distance between the production personnel and the video monitoring device, and then calculates the deflection angle of the production personnel relative to the specified direction, wherein the specific implementation takes the north direction as an example;
and finally, calculating the coordinates of the production personnel according to the ground distance between the production personnel and the video monitoring device and the deflection angle of the production personnel relative to the designated direction, wherein the captured images and the positions of the production personnel are allowed to be displayed at different terminals.
As shown in fig. 2, the video monitoring apparatus and the production staff form a right trapezoid geometric figure, the imaging principle of the video monitoring apparatus is implemented by taking a fixed camera as an example, where f is the focal length of the camera, W is the actual height of the production staff, the height data of the production staff is known, W is the height of the production staff after imaging, and is obtained by multiplying the number of pixels in imaging by the height corresponding to a single pixel, b is the linear distance between the production staff and the video monitoring apparatus, and the relationship between f, b, W, and W is as follows: b/f = W/W. After the video monitoring device is calibrated, the focal length value is known, and the linear distance between the production personnel and the video monitoring device can be calculated according to the formula b = f × W/W.
As shown in fig. 3, the height W of the production staff and the height W after imaging are known from the right trapezoid formed by the video monitor and the production staff, the installation height a of the video monitor is known, and the linear distance b between the production staff and the video monitor is calculated according to the formula d =
The ground distance d between the production personnel and the video monitoring device can be calculated in real time.
As shown in fig. 4, the deflection angles of the video monitoring apparatus and the production staff relative to the designated direction are calculated, and the specific implementation is that the north direction is taken as an example, m is equal to the pixel distance from the production staff to the leftmost side on the image containing the production staff captured by the snapshot, h is equal to the pixel distance from the production staff to the rightmost side on the image containing the production staff captured by the snapshot, the deflection angle of the video monitoring apparatus relative to the north direction is i, the wide angle of the camera is j, D is the position of the production staff, A, B and C are vertexes of an isosceles triangle formed by the wide-angle extension line of the camera and a straight line passing through D, thereby according to the formula: p = i-j/2+ (m/(m + h)). J, the angle of deflection P of the producer with respect to the true north direction can be derived.
And (3) according to the distance between the production personnel and the video monitoring equipment and the deflection angle p of the production personnel relative to the due north direction, which are obtained in the first two steps, assuming that the coordinates of the camera are (x, y, z), and calculating the coordinates (x 1, y1, z 1) of the production personnel. Ideally with the ground as the starting point of the ordinate, then: y1=0, x1= d cos, z1= d sinp, and finally the coordinates of the production person are (d cos, 0, d sinp).
The terminal display displays the calculated coordinates of the production personnel, and determines whether the production personnel is on duty again and is in the correct production position by comparing the coordinates with the required production position requirement.
The personnel positioning method can be used for delaying the existing video monitoring device in an enterprise, and can be used for acquiring the coordinates of production personnel in a video monitoring range based on video monitoring, so that the enterprise cost can be saved. The positioning method does not need to wear additional equipment or devices for assisting positioning, and is lighter and more convenient.
Claims (4)
1. A method for realizing positioning of production personnel based on video monitoring is characterized by comprising the following steps,
the method comprises the following steps: when a producer enters a video monitoring area, calling an image snapshot function of a video monitoring device for obtaining a picture containing the producer, and storing the picture containing the producer by an algorithm server for subsequent calculation;
step two: extracting height parameters of the producers in the pictures containing the producers obtained in the step one, wherein the height parameters of the producers are known, calculating the distance between the producers and the called video monitoring device according to the parameters of the video monitoring device, the focal length of a camera of the video monitoring device is known, W is the actual height of the producers, the height of the workers at a production site is known, W is the height of the producers after imaging and is obtained by multiplying the number of pixels in imaging by the height corresponding to a single pixel, b is the linear distance between the producers and the video monitoring device, and the relationship among f, b, W and W is as follows: b/f = W/W, the focal length value is known after the video monitoring device is calibrated, the linear distance b between a producer and the video monitoring device can be calculated according to the formula b = f × W/W, the video monitoring device and the producer form a right-angle trapezoidal geometric figure, the height W of the producer and the height W after imaging are known, the ground height a of the video monitoring device is known, the linear distance b between the producer and the video monitoring device is calculated according to the formula d =
The ground distance d between a production worker and the video monitoring device can be calculated in real time;
step three: obtaining the deflection angle between a producer and the due north direction, wherein the coordinate of the called video monitoring device is known, m is equivalent to the pixel distance from the producer to the leftmost side of the image containing the producer in the snapshot, h is equivalent to the pixel distance from the producer to the rightmost side of the image containing the producer in the snapshot, the deflection angle of the video monitoring device relative to the due north direction is i, the wide angle of the camera is j, D is the position of the producer, and A, B and C are the vertexes of an isosceles triangle formed by the wide-angle extension line of the camera and the straight line passing through D, so that the method is based on the formula: p = i-j/2+ (m/(m + h)). J, the angle of deflection p of the producer with respect to the true north direction can be derived;
step four: and further calculating according to the distance between the production personnel and the called video monitoring device and the deflection angle between the production personnel and the due north direction, and further obtaining the coordinates of the production personnel, wherein the method specifically comprises the steps of calculating the coordinates (x 1, y1, z 1) of the production personnel according to the ground distance d between the production personnel and the video monitoring device and the deflection angle p between the production personnel and the due north direction, and assuming that the coordinates of the camera are (x, y, z), then, y1=0, x1= d cos, z1= d sinp, and finally obtaining the coordinates of the production personnel as
(d*cosp， 0，d*sinp)。
2. The method for realizing positioning of production personnel based on video monitoring as claimed in claim 1, wherein in the first step, the production personnel enters the visual range of the video monitoring device, the video monitoring device sends a prompt to the algorithm server, the algorithm server calls the image capturing function of the video monitoring device, and the captured image containing the production personnel is stored in the algorithm server.
3. The method for realizing positioning of production personnel based on video monitoring as claimed in claim 1, wherein in the step one, the height of the production personnel is known.
4. A video monitoring system for realizing the method for realizing the positioning of the production personnel based on the video monitoring as claimed in claim 1 is characterized by comprising a video monitoring device, an algorithm server and a terminal display device, wherein the video monitoring device is in communication connection with the algorithm server, the terminal display device controls the operation of the algorithm server and the video monitoring device, and the terminal display device also displays the monitoring video of the video monitoring device and displays the calculated positioning coordinates.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016062076A1 (en) * | 2014-10-22 | 2016-04-28 | 中兴通讯股份有限公司 | Camera-based positioning method, device, and positioning system |
| CN109186584A (en) * | 2018-07-18 | 2019-01-11 | 浙江臻万科技有限公司 | A kind of indoor orientation method and positioning system based on recognition of face |
| CN111583334A (en) * | 2020-05-26 | 2020-08-25 | 广东电网有限责任公司培训与评价中心 | Three-dimensional space positioning method, device and equipment for transformer substation personnel |
| CN114078123A (en) * | 2021-11-24 | 2022-02-22 | 广东电网有限责任公司广州供电局 | Method and system for positioning electric power field operating personnel |
| CN114079696A (en) * | 2020-08-21 | 2022-02-22 | 海能达通信股份有限公司 | Terminal calling method and device and electronic equipment |
| WO2022036693A1 (en) * | 2020-08-21 | 2022-02-24 | 海能达通信股份有限公司 | Method and apparatus for calling terminal, and electronic device and storage medium |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9736368B2 (en) * | 2013-03-15 | 2017-08-15 | Spatial Cam Llc | Camera in a headframe for object tracking |
| US10354407B2 (en) * | 2013-03-15 | 2019-07-16 | Spatial Cam Llc | Camera for locating hidden objects |
| KR101043450B1 (en) * | 2009-07-31 | 2011-06-21 | 삼성전기주식회사 | Location and distance mesuring appratus its method usnig camera |
| EP2879371B1 (en) * | 2013-11-29 | 2016-12-21 | Axis AB | System for following an object marked by a tag device with a camera |
| US9691152B1 (en) * | 2015-08-14 | 2017-06-27 | A9.Com, Inc. | Minimizing variations in camera height to estimate distance to objects |
| US20210304577A1 (en) * | 2020-03-30 | 2021-09-30 | Wiser Systems, Inc. | Integrated Camera and Ultra-Wideband Location Devices and Related Systems |
| US11625859B2 (en) * | 2020-07-22 | 2023-04-11 | Motorola Solutions, Inc. | Method and system for calibrating a camera and localizing objects within the camera field of view |
-
2022
- 2022-10-28 CN CN202211330816.1A patent/CN115393778B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016062076A1 (en) * | 2014-10-22 | 2016-04-28 | 中兴通讯股份有限公司 | Camera-based positioning method, device, and positioning system |
| CN105588543A (en) * | 2014-10-22 | 2016-05-18 | 中兴通讯股份有限公司 | Camera-based positioning method, device and positioning system |
| CN109186584A (en) * | 2018-07-18 | 2019-01-11 | 浙江臻万科技有限公司 | A kind of indoor orientation method and positioning system based on recognition of face |
| CN111583334A (en) * | 2020-05-26 | 2020-08-25 | 广东电网有限责任公司培训与评价中心 | Three-dimensional space positioning method, device and equipment for transformer substation personnel |
| CN114079696A (en) * | 2020-08-21 | 2022-02-22 | 海能达通信股份有限公司 | Terminal calling method and device and electronic equipment |
| WO2022036693A1 (en) * | 2020-08-21 | 2022-02-24 | 海能达通信股份有限公司 | Method and apparatus for calling terminal, and electronic device and storage medium |
| CN114078123A (en) * | 2021-11-24 | 2022-02-22 | 广东电网有限责任公司广州供电局 | Method and system for positioning electric power field operating personnel |
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