At present, a new generation of security systems such as the "Safe City" plan has clearly requested high-definition, government, *, transportation, banking and other industries are already the main application of high-definition, in the future there will be more and more industries to introduce high-definition Demand. Intelligent video analysis technology is the development direction of future video surveillance, and it is the most high-end application mode of video surveillance. At present, foreign markets have applied a large number of intelligent video surveillance systems, and the domestic market for intelligent analysis and monitoring is also rapidly growing.
This article will introduce a domestic FullHD1080P real-time COMS network camera as an example. The network camera is embedded with the intelligent analysis technology of British VCA (VCA intelligent analysis technology embedded in the front-end DSP). The intelligent video analysis technology VCA (VideoContentAnalysis), and the traditional VMD (VideoMotionDetection) rely on pixel change detection movement is different, the principle is based on computer vision CV (ComputerVision) technology artificial intelligence AI (ArtificialIntelligent) technology (see Figure 1). It establishes a mapping relationship between goals and background descriptions, and understands the behavioral characteristics of various targets in video footage by analyzing and processing digital images. Intelligent video analysis records the target's movement trajectory and feature information (such as size, speed, direction, etc.) by tracking and recognizing the moving target, and then analyzes in real-time whether these behaviors are consistent with the previously defined detection rules. Tips for manual intervention.
The intelligent analysis function of the camera supports advanced intelligent analysis functions such as intrusion detection, flaw detection, tail detection, stop detection, direction detection, classification detection, abandoned and moving object detection, indoor high-density character tracking, high-precision bi-directional counting, and color identification. With the features of high detection efficiency, low false alarm rate, and strong timeliness, it can be widely used in security prevention and control of the community, intelligent traffic management, flow control, military, and security prevention in public places such as banks, shopping malls, subways, and airports. It can also be used in non-security areas, such as retail establishments, to provide relevant statistical information for business decisions.
Intelligent Analysis Function Intrusion Detection Function
This is the most widely used function in the intelligent video analysis case. Automatically detect suspicious objects entering, leaving, appearing or disappearing in the area and alarms in time. For example, airports, railroads, ports, borders, or other prohibited areas.
For environments where the perimeter is decentralized and the environment is complex, one or more people cannot fully monitor all the perimeters, and in the case of criminal associates among security personnel, the functional module can fully meet the requirements and it can automatically detect the planning. Trigger suspicious objects in the area and promptly alarm.
Vehicle inspection
Use stop, direction, and speed to filter detection rules.
In highways, customs import and export, urban arterial roads, parking lots and other places, using the VCA's vehicle inspection function can make it easier to manage parking and maintain traffic regulations, and greatly reduce traffic accidents caused by speeding and illegal parking.
The no parking zone can be calibrated in the camera. If there is a vehicle stopping in this area, an alarm will be triggered to remind the management personnel to take relevant measures. At the same time VMS (Video Management System) can also use the index information generated by the VCA to quickly locate related videos for post-mortem authentication.
The vehicle detection function supports setting various areas, such as: parking area, pedestrian area, bus lane, and detection of reverse driving and speeding.
Detection
Squares, shopping malls, parking lots, access control systems, bank 24-hour ATM machines, and sensitive area perimeters, etc. If a suspicious person is found to be paralysed, stay for a long time, or someone is suspicious about school or kindergarten, the function module can be based on Stay time Tracks and alerts the moving target.
Trailing detection
Trailing rules can monitor whether there are people behind the moving object or the vehicle tracking, effectively guarantee the safety of the object and the privacy requirements of the specific place. For example, when a public officer employed in a prison or detention center leaves behind a prisoner, he or she has a follow-up action. It can also be used in a bank's cash car, school perimeters, and places that require special monitoring.
Discard detection
In areas with large traffic such as airports and subway stations, people have left “packages†or other devices installed in front of bank ATMs. This function module can detect target objects in time and will immediately issue an alarm.
Item move detection
The item movement detection module can automatically detect the item movement event - an alarm is issued when the item in the detection area is removed or moved.
The detection module is suitable for occasions in which goods need to be moved for recording or alarming, such as high-priced goods in supermarkets, computers and furniture in homes, metal building materials in factories, cultural relics in museums, automobiles and valuable equipment in garages, Surveillance and tracking of theft at specific places, such as exhibits in exhibition halls. Detects and triggers an alarm when it is detected that someone has moved or removed the item.
Target statistics
Statistics can be made on the traffic in supermarkets, highways, station squares, school examination rooms, bank halls, hospital fees, and gold advertising spots in shopping malls.
This function module can accurately count the number of people or vehicles, especially when it is outdoors, it supports “eliminating the influence of shadows†and supports counting modes such as cumulative increase, cumulative decrease, and timely counting.
Counting report function
The database is integrated in the camera and automatically records statistical data and saves it locally. It can report statistical data according to different sampling frequencies such as 1 minute, 10 minutes, 1 hour, and 24 hours. It supports multiple data query methods and can work completely offline. , Support multiple data report forms, such as web forms, color bar charts and export Excel tables, and can export the Excel table for further processing, and the data is updated in real time.
Color filter
The color detection rule is the latest feature of the device's smart analytics application. It can be used under the license of PeopleTrack and provides 10 detection colors: black, brown, dark green, blue, green, sky blue, red, pink, Yellow, white. Supports the object's color percentage setting and color pie display.
It is widely used in workplaces that require color, such as hospitals, detention centers, law enforcement agencies, and prisons.
Fire detection
Pyrotechnic detection rules are also a newest rule in the smart analysis application of the device. Currently only test versions are provided. After the official versions are withdrawn, independent pyrotechnic detection rules will be provided. It can detect hidden dangers such as smoke, fire and white gas in video scenes. It is widely used in factories, warehouses, waiting rooms, waiting rooms, commercial establishments, forest fire prevention, and petrochemical industries.
3D calibration function
In the 3D calibration process, character models are used for comparison and the operation is intuitive, requiring only three simple steps to complete the 3D calibration. After calibration, the object's classification, area, speed, and altitude can be displayed, and the objects in the scene can be classified to improve the accuracy of the target detection.
Application case A large coal mine in Henan
There is a total of 13 coal mines in a large coal mine group in Henan Province. The inclined shaft has a total length of more than 1,200 meters and a slope of 30-45 degrees. The main passage is a material train passage and is next to a pedestrian passage. The material train passage prohibits the passage of miners.
As the winch operator cannot see the actual situation, resulting in low operating efficiency, the situation in which a skip hits a person occurs from time to time.
The Group uses this intelligent analysis product to monitor and manage the channels. The detection rules used are:
· Target classification and intrusion detection rules
The alarm is issued only when a person appears in the material lane, and no alarm occurs when the material vehicle passes through.
· Classification of objects and rules
When the miner in the material channel is stuck for more than 5 seconds, the smart analysis device detects the target and triggers an alarm.
· Discrete detection and stopping rules
The phenomenon of falling objects was detected, and even the miners were sitting on the rails to prevent disaster.
With the use of intelligent analysis products, the probability of personal injury is greatly reduced in the mining process of coal mining, and the production efficiency has been considerably improved.
Unattended substation
Substations as an important part of power transmission, due to unattended, important equipment is often stolen or destroyed, causing major hidden dangers to the safe operation of the entire power grid to ensure the safe operation of substations is very important.
The smart analysis functions applied to this project include:
Prevent the outdoor transformers and other equipment from being stolen or damaged;
Prevent people or large animals from entering dangerous areas;
Prevent important equipment in the room from being stolen or damaged;
Greatly improved the accuracy of the alarm and reduced the false alarm rate;
The incident occurred in a timely manner and notified the monitoring center;
Retain strong evidence of the incident scene;
In this technical scheme, the detection rules that mainly use to complete the protection of the substation include: object classification, intrusion detection, video loss, item piracy, retention detection, and defect detection.
smart transportation
The traffic control department needs to effectively realize the automatic detection of traffic violations and emergencies and the automatic statistics of traffic flow, and based on the actual road surface at city intersections, urban roads, express roads, highways, security bayonet, tunnels, bridges, and parking lots. The environment is targeted to optimize the design of the program to meet the 7×24 hours all-weather reliable environment under various conditions.
At the same time, timely and effective scheduling and deployment are needed in special circumstances to improve the safety and stability of the transportation system.
The rules that smart cameras use in intelligent traffic include:
Retrograde detection: The direction detection in the intelligent analysis algorithm is used to detect whether the vehicle is retrograde. If it is found, it will automatically alarm and prevent accidents.
Parking violations: Test whether the city vehicles are parking in violation of the rules and ensure the standardization of the roads.
Detection of abandoned objects: timely detection of remnants affecting traffic on the highway to ensure smooth roads.
Traffic statistics: traffic statistics for highway vehicles.
Speed ​​detection: Monitor the speed of vehicles on the highway.
With the use of intelligent analysis products, the probability of occurrence of accidents on relevant road sections has been significantly reduced, and personnel costs have been effectively reduced, and the standardization of traffic has been improved.
This article will introduce a domestic FullHD1080P real-time COMS network camera as an example. The network camera is embedded with the intelligent analysis technology of British VCA (VCA intelligent analysis technology embedded in the front-end DSP). The intelligent video analysis technology VCA (VideoContentAnalysis), and the traditional VMD (VideoMotionDetection) rely on pixel change detection movement is different, the principle is based on computer vision CV (ComputerVision) technology artificial intelligence AI (ArtificialIntelligent) technology (see Figure 1). It establishes a mapping relationship between goals and background descriptions, and understands the behavioral characteristics of various targets in video footage by analyzing and processing digital images. Intelligent video analysis records the target's movement trajectory and feature information (such as size, speed, direction, etc.) by tracking and recognizing the moving target, and then analyzes in real-time whether these behaviors are consistent with the previously defined detection rules. Tips for manual intervention.
The intelligent analysis function of the camera supports advanced intelligent analysis functions such as intrusion detection, flaw detection, tail detection, stop detection, direction detection, classification detection, abandoned and moving object detection, indoor high-density character tracking, high-precision bi-directional counting, and color identification. With the features of high detection efficiency, low false alarm rate, and strong timeliness, it can be widely used in security prevention and control of the community, intelligent traffic management, flow control, military, and security prevention in public places such as banks, shopping malls, subways, and airports. It can also be used in non-security areas, such as retail establishments, to provide relevant statistical information for business decisions.
Intelligent Analysis Function Intrusion Detection Function
This is the most widely used function in the intelligent video analysis case. Automatically detect suspicious objects entering, leaving, appearing or disappearing in the area and alarms in time. For example, airports, railroads, ports, borders, or other prohibited areas.
For environments where the perimeter is decentralized and the environment is complex, one or more people cannot fully monitor all the perimeters, and in the case of criminal associates among security personnel, the functional module can fully meet the requirements and it can automatically detect the planning. Trigger suspicious objects in the area and promptly alarm.
Vehicle inspection
Use stop, direction, and speed to filter detection rules.
In highways, customs import and export, urban arterial roads, parking lots and other places, using the VCA's vehicle inspection function can make it easier to manage parking and maintain traffic regulations, and greatly reduce traffic accidents caused by speeding and illegal parking.
The no parking zone can be calibrated in the camera. If there is a vehicle stopping in this area, an alarm will be triggered to remind the management personnel to take relevant measures. At the same time VMS (Video Management System) can also use the index information generated by the VCA to quickly locate related videos for post-mortem authentication.
The vehicle detection function supports setting various areas, such as: parking area, pedestrian area, bus lane, and detection of reverse driving and speeding.
Detection
Squares, shopping malls, parking lots, access control systems, bank 24-hour ATM machines, and sensitive area perimeters, etc. If a suspicious person is found to be paralysed, stay for a long time, or someone is suspicious about school or kindergarten, the function module can be based on Stay time Tracks and alerts the moving target.
Trailing detection
Trailing rules can monitor whether there are people behind the moving object or the vehicle tracking, effectively guarantee the safety of the object and the privacy requirements of the specific place. For example, when a public officer employed in a prison or detention center leaves behind a prisoner, he or she has a follow-up action. It can also be used in a bank's cash car, school perimeters, and places that require special monitoring.
Discard detection
In areas with large traffic such as airports and subway stations, people have left “packages†or other devices installed in front of bank ATMs. This function module can detect target objects in time and will immediately issue an alarm.
Item move detection
The item movement detection module can automatically detect the item movement event - an alarm is issued when the item in the detection area is removed or moved.
The detection module is suitable for occasions in which goods need to be moved for recording or alarming, such as high-priced goods in supermarkets, computers and furniture in homes, metal building materials in factories, cultural relics in museums, automobiles and valuable equipment in garages, Surveillance and tracking of theft at specific places, such as exhibits in exhibition halls. Detects and triggers an alarm when it is detected that someone has moved or removed the item.
Target statistics
Statistics can be made on the traffic in supermarkets, highways, station squares, school examination rooms, bank halls, hospital fees, and gold advertising spots in shopping malls.
This function module can accurately count the number of people or vehicles, especially when it is outdoors, it supports “eliminating the influence of shadows†and supports counting modes such as cumulative increase, cumulative decrease, and timely counting.
Counting report function
The database is integrated in the camera and automatically records statistical data and saves it locally. It can report statistical data according to different sampling frequencies such as 1 minute, 10 minutes, 1 hour, and 24 hours. It supports multiple data query methods and can work completely offline. , Support multiple data report forms, such as web forms, color bar charts and export Excel tables, and can export the Excel table for further processing, and the data is updated in real time.
Color filter
The color detection rule is the latest feature of the device's smart analytics application. It can be used under the license of PeopleTrack and provides 10 detection colors: black, brown, dark green, blue, green, sky blue, red, pink, Yellow, white. Supports the object's color percentage setting and color pie display.
It is widely used in workplaces that require color, such as hospitals, detention centers, law enforcement agencies, and prisons.
Fire detection
Pyrotechnic detection rules are also a newest rule in the smart analysis application of the device. Currently only test versions are provided. After the official versions are withdrawn, independent pyrotechnic detection rules will be provided. It can detect hidden dangers such as smoke, fire and white gas in video scenes. It is widely used in factories, warehouses, waiting rooms, waiting rooms, commercial establishments, forest fire prevention, and petrochemical industries.
3D calibration function
In the 3D calibration process, character models are used for comparison and the operation is intuitive, requiring only three simple steps to complete the 3D calibration. After calibration, the object's classification, area, speed, and altitude can be displayed, and the objects in the scene can be classified to improve the accuracy of the target detection.
Application case A large coal mine in Henan
There is a total of 13 coal mines in a large coal mine group in Henan Province. The inclined shaft has a total length of more than 1,200 meters and a slope of 30-45 degrees. The main passage is a material train passage and is next to a pedestrian passage. The material train passage prohibits the passage of miners.
As the winch operator cannot see the actual situation, resulting in low operating efficiency, the situation in which a skip hits a person occurs from time to time.
The Group uses this intelligent analysis product to monitor and manage the channels. The detection rules used are:
· Target classification and intrusion detection rules
The alarm is issued only when a person appears in the material lane, and no alarm occurs when the material vehicle passes through.
· Classification of objects and rules
When the miner in the material channel is stuck for more than 5 seconds, the smart analysis device detects the target and triggers an alarm.
· Discrete detection and stopping rules
The phenomenon of falling objects was detected, and even the miners were sitting on the rails to prevent disaster.
With the use of intelligent analysis products, the probability of personal injury is greatly reduced in the mining process of coal mining, and the production efficiency has been considerably improved.
Unattended substation
Substations as an important part of power transmission, due to unattended, important equipment is often stolen or destroyed, causing major hidden dangers to the safe operation of the entire power grid to ensure the safe operation of substations is very important.
The smart analysis functions applied to this project include:
Prevent the outdoor transformers and other equipment from being stolen or damaged;
Prevent people or large animals from entering dangerous areas;
Prevent important equipment in the room from being stolen or damaged;
Greatly improved the accuracy of the alarm and reduced the false alarm rate;
The incident occurred in a timely manner and notified the monitoring center;
Retain strong evidence of the incident scene;
In this technical scheme, the detection rules that mainly use to complete the protection of the substation include: object classification, intrusion detection, video loss, item piracy, retention detection, and defect detection.
smart transportation
The traffic control department needs to effectively realize the automatic detection of traffic violations and emergencies and the automatic statistics of traffic flow, and based on the actual road surface at city intersections, urban roads, express roads, highways, security bayonet, tunnels, bridges, and parking lots. The environment is targeted to optimize the design of the program to meet the 7×24 hours all-weather reliable environment under various conditions.
At the same time, timely and effective scheduling and deployment are needed in special circumstances to improve the safety and stability of the transportation system.
The rules that smart cameras use in intelligent traffic include:
Retrograde detection: The direction detection in the intelligent analysis algorithm is used to detect whether the vehicle is retrograde. If it is found, it will automatically alarm and prevent accidents.
Parking violations: Test whether the city vehicles are parking in violation of the rules and ensure the standardization of the roads.
Detection of abandoned objects: timely detection of remnants affecting traffic on the highway to ensure smooth roads.
Traffic statistics: traffic statistics for highway vehicles.
Speed ​​detection: Monitor the speed of vehicles on the highway.
With the use of intelligent analysis products, the probability of occurrence of accidents on relevant road sections has been significantly reduced, and personnel costs have been effectively reduced, and the standardization of traffic has been improved.
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