Image Interpretation Challenges

Wherever Security Screening takes place, there is always pressure on the security team to ensure that the people waiting to enter the facility are processed as soon as possible. As a result of this perceived pressure, mistakes are occasionally made, and threatening or prohibited items pass through security checkpoints undetected. The area of most concern is the X-ray image misinterpretation, and while not all errors can be attributed to the pressure of people flow through, there are other challenges at work. Some of the more common image interpretation challenges include the following:

Image Clutter: X-ray images often contain a significant amount of clutter, such as personal belongings, clothing, and other non-threatening items. This clutter can obscure or hide potential threats, making them difficult to detect.

Occlusion: Occlusion occurs when another partially or completely obscures one object. In X-ray images, occlusion can make it challenging to distinguish between overlapping items of higher density and identify potential threats hidden behind them.

Image Resolution: The resolution of X-ray images can vary depending on the imaging system and the object being scanned. Low-resolution images can make it harder to identify small or low-density threats accurately.

Complex Structures: Baggage or cargo with intricate structures, such as densely packed electronics or complicated wiring, can make identifying potential threats concealed within the objects challenging.

Operator Fatigue: One of the factors most overlooked. Continuous monitoring of X-ray images can lead to operator fatigue, reducing attention and increasing the likelihood of missing potential threats.

To reduce the incidence of these challenges and improve image interpretation in security X-ray machines, several tools and technologies are available:

Advanced Imaging Algorithms: Sophisticated algorithms can enhance image quality, reduce clutter, and improve the visibility of potential threats. These algorithms employ image enhancement, edge detection, and material discrimination to help operators identify objects more effectively.

Multiple Viewing Angles: X-ray machines with various viewing angles (dual view) or 3D imaging (CT scan) capabilities provide operators with a more comprehensive view of the scanned objects. This can help reduce occlusion and improve the accuracy of threat detection.

Artificial Intelligence (AI): AI technologies assist X-ray screeners in image interpretation. Systems use sophisticated machine learning algorithms to analyse X-ray images, identify potential threats, and alert operators.

Training and Certification Programs: Implementing comprehensive training programs for X-ray screeners enhances their ability to interpret images accurately and identify potential threats effectively. Regular proficiency tests and certification requirements help ensure ongoing competency.

Ergonomic Workstations: For better operator performance in image interpretation, it is advisable to provide ergonomic workstations. The workstations should have comfortable seating, good lighting conditions, regular breaks from screening, and optimal image display settings. These measures can help reduce fatigue and improve concentration.

While equipment upgrades can be a huge capital expenditure, several cost-effective solutions are available.

Neural Guard is collaborating with Renful Premier Technologies, a leader in providing advanced security training to develop and deliver top-of-the-line products and services. The effectiveness of security operations relies heavily on the human operators’ capacity to analyse X-ray images. Hence, it is imperative to provide regular image analysis training. Simfox security training simulator, provided by Renful offers an extensive training database of real-life images and customisable modules that can help screeners of all levels to improve their threat detection skills.

EyeFox offered by Neural Guard as an innovative system that uses AI technology to detect potential threats during X-ray security screenings instantly. Its highly accurate analysis distinguishes threats from other objects in real-time, allowing swift and focused responses. EyeFox increases efficiency and throughput for security screening operators by minimising contact with bag contents and individuals.  The system can seamlessly integrate with the existing machines without disrupting regular operations.