CN112184774A - Method and device for determining high-altitude parabolic hazard degree - Google Patents
Method and device for determining high-altitude parabolic hazard degree Download PDFInfo
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Abstract
The invention discloses a method and a device for determining the hazard level of a high-altitude parabola, wherein the method comprises the steps of acquiring acquisition information of a plurality of linkage cameras, identifying aerial image information and landing image information of the high-altitude parabola to obtain floor information, landing position information and landing time information of the high-altitude parabola, determining estimated landing time of the high-altitude parabola according to the floor information of the high-altitude parabola, determining the hazard level of the high-altitude parabola according to the estimated landing time and the landing time information, determining the hazard level of the high-altitude parabola according to the landing position information and pedestrian information at the landing position information, and sending an alarm prompt according to the hazard level and the hazard level of the high-altitude parabola. Through the information that adopts the mode collection of many cameras linkage, can count out the parabolical operating time in the air and the parabolical position information that falls to the ground, and then carry out the parabolical danger rating according to these information to and confirm parabolical harm grade through the harm of parabolical person after falling to the ground.
Description
Technical Field
The invention relates to the technical field of intelligent communities, in particular to a method and a device for determining high-altitude parabolic hazard degree.
Background
The high-altitude parabolas are relatively common phenomena endangering safety in the current community, and the 'forbidden throwing of articles from buildings' is definitely proposed in the 'civil law' in 2019, so that the high-altitude parabolas are behaviors forbidden by the civil law, and are divided into more extensive authorities and liabilities. Therefore, the high-altitude parabolic tracing problem becomes more important.
The traditional identification of high-altitude parabolas adopts a video recording mode to look back, and finally only can determine whether parabolas exist and the time and the position of the parabolas, but the damage can not be identified after the parabolas are processed.
Disclosure of Invention
The embodiment of the invention provides a method and a device for determining the damage degree of a high-altitude parabola, which are used for evaluating the damage of the high-altitude parabola.
In a first aspect, an embodiment of the present invention provides a method for determining a high altitude parabolic hazard level, including:
acquiring acquisition information of a plurality of linkage cameras, wherein the acquisition information comprises aerial image information of a high-altitude parabolic object and image information of a landing;
identifying the aerial image information and the landing image information of the high-altitude parabolic object to obtain floor information, landing position information and landing time information of the high-altitude parabolic object;
determining estimated landing time of the high-altitude parabolic object according to the floor information of the high-altitude parabolic object, and determining the danger level of the high-altitude parabolic object according to the estimated landing time and the landing time information;
determining the damage level of the high altitude parabola according to the landing position information and the pedestrian information at the landing position information;
and sending out an alarm prompt according to the danger level and the hazard level of the high-altitude object throwing.
Among the above-mentioned technical scheme, through the information that adopts the mode collection of many cameras linkage, can count out the parabola in the aerial operating time and the parabola fall to the ground position information, and then carry out the danger rating of parabola according to these information to and confirm parabolic harm grade through the parabola to the harm of people after falling to the ground.
Optionally, the determining the estimated landing time of the high-altitude parabola according to the floor information of the high-altitude parabola includes:
determining the throwing height of the high-altitude parabolic object according to the floor information of the high-altitude parabolic object and a preset floor distance;
and determining the estimated landing time of the high-altitude parabolic object according to the throwing height of the high-altitude parabolic object and the rule of free-fall motion.
Optionally, the determining the danger level of the high altitude parabola according to the estimated landing time and the landing time information includes:
if the landing time information is smaller than or equal to the preset multiple of the estimated landing time, determining that the high-altitude object is a heavy object and the danger level is high risk;
and if the landing time information is larger than the preset multiple of the estimated landing time, determining that the high-altitude object is a light object and the danger level is medium-low risk.
Optionally, the determining the hazard level of the high altitude parabola according to the landing position information and the pedestrian information at the landing position information includes:
identifying pedestrians on the landing position information, and determining whether pedestrians exist at the landing position of the high-altitude parabola;
if the high-altitude parabolic object falls on the ground, determining whether a pedestrian exists in a preset range by taking the falling position information as a center, and if the pedestrian exists in the preset range by taking the falling position information as the center, determining that the hazard level of the high-altitude parabolic object is high hazard; if no pedestrian exists within a preset range by taking the landing position information as a center, tracking the pedestrian at the landing position, and determining that the hazard level of the high altitude parabola is high hazard when the change that the track of the pedestrian at the landing position is far away from the landing position information is determined; and when the pedestrian trajectory at the landing position is determined not to be changed far away from the landing position information, determining the hazard level of the high-altitude parabola to be medium hazard.
Optionally, the identifying the pedestrian to the landing position information, and determining whether there is a pedestrian at the landing position of the high altitude parabola include:
and carrying out motion detection on the ground according to the landing position information, and when the moving object exists on the ground, identifying the pedestrian to the moving object and determining whether the pedestrian exists at the landing position of the high-altitude parabola.
In a second aspect, an embodiment of the present invention provides an apparatus for determining a high altitude parabolic hazard level, including:
the system comprises an acquisition unit, a processing unit and a display unit, wherein the acquisition unit is used for acquiring acquisition information of a plurality of linkage cameras, and the acquisition information comprises aerial image information of a high-altitude parabolic object and landing image information;
the processing unit is used for identifying the aerial image information and the landing image information of the high-altitude parabolic object to obtain the floor information, the landing position information and the landing time information of the high-altitude parabolic object; determining estimated landing time of the high-altitude parabolic object according to the floor information of the high-altitude parabolic object, and determining the danger level of the high-altitude parabolic object according to the estimated landing time and the landing time information; determining the damage level of the high altitude parabola according to the landing position information and the pedestrian information at the landing position information; and sending out an alarm prompt according to the danger level and the hazard level of the high-altitude object throwing.
Optionally, the processing unit is specifically configured to:
determining the throwing height of the high-altitude parabolic object according to the floor information of the high-altitude parabolic object and a preset floor distance;
and determining the estimated landing time of the high-altitude parabolic object according to the throwing height of the high-altitude parabolic object and the rule of free-fall motion.
Optionally, the processing unit is specifically configured to:
if the landing time information is smaller than or equal to the preset multiple of the estimated landing time, determining that the high-altitude object is a heavy object and the danger level is high risk;
and if the landing time information is larger than the preset multiple of the estimated landing time, determining that the high-altitude object is a light object and the danger level is medium-low risk.
Optionally, the processing unit is specifically configured to:
identifying pedestrians on the landing position information, and determining whether pedestrians exist at the landing position of the high-altitude parabola;
if the high-altitude parabolic object falls on the ground, determining whether a pedestrian exists in a preset range by taking the falling position information as a center, and if the pedestrian exists in the preset range by taking the falling position information as the center, determining that the hazard level of the high-altitude parabolic object is high hazard; if no pedestrian exists within a preset range by taking the landing position information as a center, tracking the pedestrian at the landing position, and determining that the hazard level of the high altitude parabola is high hazard when the change that the track of the pedestrian at the landing position is far away from the landing position information is determined; and when the pedestrian trajectory at the landing position is determined not to be changed far away from the landing position information, determining the hazard level of the high-altitude parabola to be medium hazard.
Optionally, the processing unit is specifically configured to:
and carrying out motion detection on the ground according to the landing position information, and when the moving object exists on the ground, identifying the pedestrian to the moving object and determining whether the pedestrian exists at the landing position of the high-altitude parabola.
In a third aspect, an embodiment of the present invention further provides a computing device, including:
a memory for storing program instructions;
and the processor is used for calling the program instructions stored in the memory and executing the method for determining the high-altitude parabolic hazard degree according to the obtained program.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable non-volatile storage medium, which includes computer-readable instructions, and when the computer-readable instructions are read and executed by a computer, the computer is caused to execute the above method for determining the high altitude parabolic hazard level.
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In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a system architecture according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a method for determining a high altitude parabolic hazard level according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a camera placement according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a high altitude parabola provided by an embodiment of the present invention;
FIG. 5 is a schematic diagram of a high altitude parabola provided by an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a device for determining a high altitude parabolic hazard level according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a system architecture provided in an embodiment of the present invention. As shown in fig. 1, the system architecture may be a server 100, and the server 100 may include a processor 110, a communication interface 120, and a memory 130.
The communication interface 120 is used for communicating with a terminal device, and transceiving information transmitted by the terminal device to implement communication.
The processor 110 is a control center of the server 100, connects various parts of the entire server 100 using various interfaces and lines, performs various functions of the server 100 and processes data by running or executing software programs and/or modules stored in the memory 130 and calling data stored in the memory 130. Alternatively, processor 110 may include one or more processing units.
The memory 130 may be used to store software programs and modules, and the processor 110 executes various functional applications and data processing by operating the software programs and modules stored in the memory 130. The memory 130 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function, and the like; the storage data area may store data created according to a business process, and the like. Further, the memory 130 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
It should be noted that the structure shown in fig. 1 is only an example, and the embodiment of the present invention is not limited thereto.
Based on the above description, fig. 2 shows in detail a flow of a method for determining a high altitude parabolic hazard level according to an embodiment of the present invention, where the flow may be performed by a high altitude parabolic hazard level determining device, which may be the server or located in the server.
As shown in fig. 2, the process specifically includes:
In the embodiment of the invention, the camera linkage refers to: at least more than two cameras are needed, so that the process of throwing the object in the air can be grabbed, and the process of falling the object can also be obtained. Specifically, as shown in fig. 3, the camera 1 is used to capture the airborne process, and the camera 2 is used to capture the landing process. The traditional high-altitude parabolic camera only has a camera 1 and does not have a camera 2. This is a hardware condition that the linkage needs to possess.
The acquisition information may include aerial image information of a high altitude parabola and image information of a landing.
Through a preset identification algorithm, the aerial image information and the landing image information of the high-altitude parabolic object can be identified, and the floor information, the landing position information and the landing time information of the high-altitude parabolic object are obtained. The preset identification algorithm may be an existing parabolic identification algorithm, or a parabolic identification algorithm in a part of patent documents of the previous application of the present application.
For example, fig. 4 and 5 are combined, wherein fig. 4 is a camera for the process of grabbing a parabola in the air, and fig. 5 is a camera below the camera. First, fig. 4 is labeled, the black solid lines on the left and right sides in fig. 4 are floor boundary labels, the dot is a parabolic position, according to the previous identification scheme, the abscissa of the dot is i3, and the dot center position and the left and right floor boundaries are obtained, the intersecting dot abscissas are i1 and i2, respectively, so that the position (from the left side) ratio of the dot on the floor is:
thus, the floor 12 at this time can be obtained.
In fig. 5, the coordinate values of i4, i5 and i6 corresponding to i1, i2 and i3 can be obtained in the same manner. The condition for judging that the objects of the two frames of images are the same is as follows:
(1) simultaneously: this can be obtained by the time of two frames of images.
(2) C, co-location: the same floor and the same proportion.
After the floor information is obtained, the throwing height of the high altitude parabola can be obtained according to the floor information and the preset floor distance, and then the estimated landing time of the high altitude parabola is determined according to the throwing height of the high altitude parabola and the rule of free falling body movement.
For example, the throwing floor of the parabola is 10 floors, and the preset floor distance is 3.2m, the throwing height of the high altitude parabola can be obtained to be 32 m. At this time, the ejection height is inputted toThe estimated landing time of the high-altitude parabola can be obtained from the formula of the falling body movement. Wherein, the formula of freely falling to the ground:
g was 9.8, which gave t 2.56 s.
When the landing time information is less than or equal to the preset multiple of the estimated landing time, the high-altitude object can be determined as a heavy object, and the danger level is high risk. When the landing time information is larger than a preset multiple of the estimated landing time, the high-altitude object can be determined as a light object, and the danger level is a medium-low risk, wherein the preset multiple can be set according to experience.
The principle of grading the parabolic hazard is as follows: heavy objects are rated as high risk, and light dance is rated as medium and low risk. The object is influenced by gravity and air resistance in the process of descending in the air, and the air resistance is lower for heavy objects and higher for light objects. In the same floor, the object is parabolic, and the higher the descending speed is, the higher the danger is, in relation to the real speed, direction and acceleration.
Specifically, the risk level determination may be performed according to the following formula:
wherein, 0.7 is the preset multiple, and t1 is the landing time information, i.e. the actual landing time.
And 204, determining the damage level of the high altitude parabola according to the landing position information and the pedestrian information at the landing position information.
When the damage level of the high-altitude parabola is determined, the pedestrian identification can be firstly carried out on the landing position information, and whether the pedestrian is at the landing position of the high-altitude parabola is determined. When a pedestrian is in the landing position of the high-altitude parabola, whether the pedestrian exists in a preset range with the landing position information as the center is determined, and if the pedestrian exists in the preset range with the landing position information as the center, the hazard level of the high-altitude parabola is determined to be high hazard. And if no pedestrian exists in the preset range by taking the landing position information as the center, tracking the pedestrian at the landing position, and determining the hazard level of the high-altitude parabola to be high hazard when the change of the pedestrian trajectory at the landing position far away from the landing position information is determined. And when the pedestrian trajectory at the landing position is determined not to be changed far away from the landing position information, determining the hazard level of the high-altitude parabola to be medium hazard. When no pedestrian is in the landing position of the high-altitude parabola, the hazard level of the high-altitude parabola can be determined to be low.
When the ground of the high-altitude parabolic body is determined to have pedestrians, the ground can be subjected to motion detection according to the ground position information, and when the ground is determined to have moving objects, the moving objects are subjected to pedestrian recognition, so that whether the ground of the high-altitude parabolic body has the pedestrians or not is determined.
For example, the camera may be controlled to perform motion detection, and when there is a moving object (using an inter-frame difference mode), the moving object enters the pedestrian recognition module, so as to reduce the calculation pressure, and the pedestrian detection uses a currently popular YOLO (real-time fast object detection) algorithm to perform pedestrian recognition. If there is no pedestrian present, the present parabolic hazard may be defined as a low hazard. If the pedestrian exists, whether the pedestrian exists in the range of the radius R (the preset range) by taking the parabolic floor point as the center is judged, and the radius R refers to the actual distance on the image. If the pedestrian is within radius R, then this parabola is defined as a high hazard. If the pedestrian is not in the range, the pedestrian is judged according to the relation between the track tracking and the parabolic position, the track tracking algorithm is commonly used in Camshift (continuous adaptive MeanShift algorithm), when the pedestrian deviates from the far movement track, the pedestrian is considered to be in high danger, otherwise, the pedestrian is in low danger.
Specifically, the hazard ranking rule may be:
and step 205, sending out an alarm prompt according to the danger level and the hazard level of the high altitude parabola.
After the danger level and the hazard level of the high-altitude parabola are obtained, corresponding warning prompts can be sent out corresponding to the levels of medium, high, medium and high hazards, so that workers can timely process the warning prompts.
According to the embodiment of the invention, through linkage of the multiple cameras, not only can the whole process of the parabola be obtained, but also the ground camera can capture the influence of the parabola after falling to the ground; performing danger rating on the parabola through the operation time of the parabola in the air; after landing by a parabola, the hazard to a person (human reflection) confirms the hazard rating of the parabola.
In the embodiment of the invention, the acquisition information of a plurality of linkage cameras is acquired, the aerial image information and the landing image information of the high-altitude parabolic object are identified to obtain the floor information, landing position information and landing time information of the high-altitude parabolic object, the estimated landing time of the high-altitude parabolic object is determined according to the floor information of the high-altitude parabolic object, the danger level of the high-altitude parabolic object is determined according to the estimated landing time and the landing time information, the hazard level of the high-altitude parabolic object is determined according to the landing position information and the pedestrian information at the landing position information, and an alarm prompt is sent according to the danger level and the hazard level of the high-altitude parabolic object. Through the information that adopts the mode collection of many cameras linkage, can count out the parabolical operating time in the air and the parabolical position information that falls to the ground, and then carry out the parabolical danger rating according to these information to and confirm parabolical harm grade through the harm of parabolical person after falling to the ground.
Based on the same technical concept, fig. 6 exemplarily shows the structure of a high altitude parabolic hazard degree determination apparatus provided by the embodiment of the present invention, and the apparatus can perform a high altitude parabolic hazard degree determination process.
As shown in fig. 6, the apparatus specifically includes:
the acquisition unit 601 is used for acquiring acquisition information of a plurality of linkage cameras, wherein the acquisition information comprises aerial image information of a high-altitude parabolic object and landing image information;
the processing unit 602 is configured to identify aerial image information and landing image information of the high-altitude parabola, so as to obtain floor information, landing position information, and landing time information of the high-altitude parabola; determining estimated landing time of the high-altitude parabolic object according to the floor information of the high-altitude parabolic object, and determining the danger level of the high-altitude parabolic object according to the estimated landing time and the landing time information; determining the damage level of the high altitude parabola according to the landing position information and the pedestrian information at the landing position information; and sending out an alarm prompt according to the danger level and the hazard level of the high-altitude object throwing.
Optionally, the processing unit 602 is specifically configured to:
determining the throwing height of the high-altitude parabolic object according to the floor information of the high-altitude parabolic object and a preset floor distance;
and determining the estimated landing time of the high-altitude parabolic object according to the throwing height of the high-altitude parabolic object and the rule of free-fall motion.
Optionally, the processing unit 602 is specifically configured to:
if the landing time information is smaller than or equal to the preset multiple of the estimated landing time, determining that the high-altitude object is a heavy object and the danger level is high risk;
and if the landing time information is larger than the preset multiple of the estimated landing time, determining that the high-altitude object is a light object and the danger level is medium-low risk.
Optionally, the processing unit 602 is specifically configured to:
identifying pedestrians on the landing position information, and determining whether pedestrians exist at the landing position of the high-altitude parabola;
if the high-altitude parabolic object falls on the ground, determining whether a pedestrian exists in a preset range by taking the falling position information as a center, and if the pedestrian exists in the preset range by taking the falling position information as the center, determining that the hazard level of the high-altitude parabolic object is high hazard; if no pedestrian exists within a preset range by taking the landing position information as a center, tracking the pedestrian at the landing position, and determining that the hazard level of the high altitude parabola is high hazard when the change that the track of the pedestrian at the landing position is far away from the landing position information is determined; and when the pedestrian trajectory at the landing position is determined not to be changed far away from the landing position information, determining the hazard level of the high-altitude parabola to be medium hazard.
Optionally, the processing unit 602 is specifically configured to:
and carrying out motion detection on the ground according to the landing position information, and when the moving object exists on the ground, identifying the pedestrian to the moving object and determining whether the pedestrian exists at the landing position of the high-altitude parabola.
Based on the same technical concept, an embodiment of the present invention further provides a computing device, including:
a memory for storing program instructions;
and the processor is used for calling the program instructions stored in the memory and executing the method for determining the high-altitude parabolic hazard degree according to the obtained program.
Based on the same technical concept, embodiments of the present invention further provide a computer-readable non-volatile storage medium, which includes computer-readable instructions, and when the computer reads and executes the computer-readable instructions, the computer is caused to execute the method for determining the high altitude parabolic hazard level.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method for determining the degree of high altitude parabolic hazard, comprising:
acquiring acquisition information of a plurality of linkage cameras, wherein the acquisition information comprises aerial image information of a high-altitude parabolic object and image information of a landing;
identifying the aerial image information and the landing image information of the high-altitude parabolic object to obtain floor information, landing position information and landing time information of the high-altitude parabolic object;
determining estimated landing time of the high-altitude parabolic object according to the floor information of the high-altitude parabolic object, and determining the danger level of the high-altitude parabolic object according to the estimated landing time and the landing time information;
determining the damage level of the high altitude parabola according to the landing position information and the pedestrian information at the landing position information;
and sending out an alarm prompt according to the danger level and the hazard level of the high-altitude object throwing.
2. The method of claim 1, wherein the determining an estimated landing time of the high altitude parabola from the floor information of the high altitude parabola comprises:
determining the throwing height of the high-altitude parabolic object according to the floor information of the high-altitude parabolic object and a preset floor distance;
and determining the estimated landing time of the high-altitude parabolic object according to the throwing height of the high-altitude parabolic object and the rule of free-fall motion.
3. The method of claim 1, wherein said determining a hazard level of the high altitude parabola based on the estimated landing time and the landing time information comprises:
if the landing time information is smaller than or equal to the preset multiple of the estimated landing time, determining that the high-altitude object is a heavy object and the danger level is high risk;
and if the landing time information is larger than the preset multiple of the estimated landing time, determining that the high-altitude object is a light object and the danger level is medium-low risk.
4. The method of any one of claims 1 to 3, wherein the determining the hazard level of the high altitude parabola from the landing location information and pedestrian information at the landing location information comprises:
identifying pedestrians on the landing position information, and determining whether pedestrians exist at the landing position of the high-altitude parabola;
if the high-altitude parabolic object falls on the ground, determining whether a pedestrian exists in a preset range by taking the falling position information as a center, and if the pedestrian exists in the preset range by taking the falling position information as the center, determining that the hazard level of the high-altitude parabolic object is high hazard; if no pedestrian exists within a preset range by taking the landing position information as a center, tracking the pedestrian at the landing position, and determining that the hazard level of the high altitude parabola is high hazard when the change that the track of the pedestrian at the landing position is far away from the landing position information is determined; and when the pedestrian trajectory at the landing position is determined not to be changed far away from the landing position information, determining the hazard level of the high-altitude parabola to be medium hazard.
5. The method of claim 4, wherein the identifying the pedestrian from the landing location information to determine whether the pedestrian is present at the landing of the high altitude parabola comprises:
and carrying out motion detection on the ground according to the landing position information, and when the moving object exists on the ground, identifying the pedestrian to the moving object and determining whether the pedestrian exists at the landing position of the high-altitude parabola.
6. An apparatus for determining a level of high altitude parabolic hazard, comprising:
the system comprises an acquisition unit, a processing unit and a display unit, wherein the acquisition unit is used for acquiring acquisition information of a plurality of linkage cameras, and the acquisition information comprises aerial image information of a high-altitude parabolic object and landing image information;
the processing unit is used for identifying the aerial image information and the landing image information of the high-altitude parabolic object to obtain the floor information, the landing position information and the landing time information of the high-altitude parabolic object; determining estimated landing time of the high-altitude parabolic object according to the floor information of the high-altitude parabolic object, and determining the danger level of the high-altitude parabolic object according to the estimated landing time and the landing time information; determining the damage level of the high altitude parabola according to the landing position information and the pedestrian information at the landing position information; and sending out an alarm prompt according to the danger level and the hazard level of the high-altitude object throwing.
7. The apparatus as claimed in claim 6, wherein said processing unit is specifically configured to:
determining the throwing height of the high-altitude parabolic object according to the floor information of the high-altitude parabolic object and a preset floor distance;
and determining the estimated landing time of the high-altitude parabolic object according to the throwing height of the high-altitude parabolic object and the rule of free-fall motion.
8. The apparatus as claimed in claim 6, wherein said processing unit is specifically configured to:
if the landing time information is smaller than or equal to the preset multiple of the estimated landing time, determining that the high-altitude object is a heavy object and the danger level is high risk;
and if the landing time information is larger than the preset multiple of the estimated landing time, determining that the high-altitude object is a light object and the danger level is medium-low risk.
9. A computing device, comprising:
a memory for storing program instructions;
a processor for calling program instructions stored in said memory to execute the method of any one of claims 1 to 5 in accordance with the obtained program.
10. A computer-readable non-transitory storage medium including computer-readable instructions which, when read and executed by a computer, cause the computer to perform the method of any one of claims 1 to 5.
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