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Under vehicle scanning systems - then & now
The evolution of under vehicle scanning systems has been driven by the need to reduce costs and increase the reliability of inspection systems over manual methods. The goal was to replace the traditional mirror on a stick system of looking under cars for bombs and contraband so that the civilian as well as military law enforcement can be facilitated. Such UVSS systems have been developed and deployed based on the ability to detect suspicious objects, attached objects of different sizes and shapes.
Exceedingly stringent detection requirements while achieving high detection and very low false alarm rates would result in complex and costly inspection systems that would, therefore, be less likely to be deployed. A multi-tier approach similar to the one taken by the Transportation Security Administration (TSA) for the detection of contraband is suggested. A tiered approach used over time has been helpful in detecting contraband in the underside of vehicles, requiring a well-defined increasing performance of detection at every tier. The regulators could similarly introduce requirements to detect certain materials, object sizes, shapes and configurations that could be detected by existing systems, and increase detection requirements over time by challenging the industry to deliver more advanced inspection systems.
The development of under-carriage scanning systems has been a long journey, with many innovations and improvements along the way. The first systems used Line-Scan cameras to record vehicle movement, producing an image of each vehicle in turn. As vehicles came and went through, the resulting mosaic was captured by the camera and stored on a hard drive. In this way, it was possible to capture images of the vehicles.
As traffic volumes grew, so did the need for more accurate information about vehicles. This led to the development of composite images based on Area-Scan technology replacing line scan cameras.
These systems were improved further by combining multiple Area-Scan images into one composite image, which provided a better representation of traffic conditions than line-scan cameras. The introduction of intelligent software modules like ANPR (Automatic Number Plate Reading) and object detection features has further enhanced their utility.
Dual view 3D technology provides an enhanced field of vision, allowing operators to see around corners and over obstacles, improving situational awareness.
Dual view 3D provides a composite view on a single screen with increased security, allowing operators to see around objects at isometric angle with ease around the screen. This means inspection is happening more quickly and accurately than before.
With research and development through modern technologies on various versions of UVSS, the vision system has evolved with its sensors, image processing, lighting and display in the new era’s DepScan UVSS, and the limitations of previous versions are addressed in this latest version of under vehicle scanning system.
The equipment is weather resistant while capable of capturing 3D stereoscopic depth view of the entire under carriage of vehicle. The image clarity is achieved through high resolution color images and a real life 3D visualization is possible. It covers hard to view corners and edges that remain otherwise occluded. The system is capable of providing the operator with depth based object analysis & detection unlike previous generations of UVSS which were relying upon visual difference in object color from vehicle’s color underneath. The use of stereoscopic vision technology brings in the tectonic shift in the usual scanning of underside of the vehicles.
The system is operated from a Local control & processing unit. The system covers the portions thoroughly with stereoscopic camera setup so that the operator can instantly detect contraband if hidden below the chassis.
To better appreciate the stereoscopic vision technology of DepScan, it is important to understand how it is typically used for an undercarriage inspection task. The entire system is placed at the concrete surface level and the wires laid below the ground level so that there is no damage on continuous vehicle movement. It uses the latest and highly advanced area scanning technology using a combination of advanced equipment. The cutting edge technology of 3D depth vision is what brings DepScan into limelight in the family of Under Vehicle Scanning Systems. It offers relative depth information by using Point Cloud Based 3D Model which improves the effectiveness and efficiency of the system manifold.
Vehant’s under vehicle surveillance systems are crafted to scan, observe, and digitally capture sharp, clear digital images & videos of the entire underside of vehicles— with one permanent fixed or mobile system. Mindful integration of components makes the UVSS an economical and convenient solution for screening passenger vehicles, vans, buses, semi tractors, trucks and trailers, and more. Summarizing the UVSS requirement, we can say it’s an ideal solution for all the governmental, military, enterprise, and transportation facilities—wherever complete vehicle monitoring is needed.
In conclusion, DepScan UVSS is an important technology that is needed in India to ensure the safety and security of premise. With its ability to detect potential threats, improve the overall security of public places, and provide valuable information in case of an emergency, DepScan UVSS is a valuable investment for India.
Soucre: Times of India
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