Threat Image Projection Distortion Matching

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Solution Overview

Problem

Conventional security screening systems fail to convincingly simulate real threats in luggage, leading to lapses in attention and potential missed dangers due to unrealistic image projections.

Innovation Solution

A method and system that apply a distortion insertion process to simulated threat images to match the distortions introduced by luggage scanning devices, creating a more realistic representation of threats within the images displayed to operators.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If threat image projection systems merge simulated threat images with live luggage images, then operator training and vigilance are improved, but the realism of the simulated threat is reduced making operators suspicious

Engineering Contradiction:

Improveoperator training effectivenessVSAvoidrealism of threat simulation

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The patent applies parameter changes by transforming the simulated threat image through the same distortion parameters that the scanning device applies to real luggage images. This involves adjusting geometric distortion, perspective transformation, and image warping parameters to match the scanning device's characteristics, thereby making the simulated threat indistinguishable from real threats in the merged image.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses copying by creating a distorted version of the simulated threat image that replicates the scanning device's image characteristics. The system copies the distortion patterns, contrast properties, and geometric transformations from real scanned luggage images and applies them to the simulated threat, making the simulation appear authentic to operators.

Inventive Principle:

Principle #26Copying

2Difficulty of detecting and measuring

If conventional scanning devices introduce distortion to luggage images, then detection capability is improved, but the authenticity of threat simulations is reduced

Engineering Contradiction:

Improvethreat detection capabilityVSAvoidaccuracy of threat simulation

Core Design Contradiction:

Difficulty of detecting and measuringVSManufacturing precision

Solution Approach 1:

The system changes the parameters of the simulated threat image by applying the same distortion transformations that the scanning device introduces to real luggage images. This includes geometric warping, perspective adjustments, and coordinate transformations that replicate the scanning process, ensuring the simulated threat maintains the same level of distortion authenticity as real scanned images.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces manual image merging operations with an automated image processing system that mathematically models and applies distortion transformations. Instead of simply overlaying images, the system uses computational geometry and image warping algorithms to substitute the mechanical scanning process with a digital distortion application, achieving more precise and consistent results.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enhances the realism of threat simulations, reducing the likelihood of missed threats by mimicking the distortions inherent in scanned images, thereby improving operator vigilance and detection accuracy.

Implementation Method 1

receiving a sequence of images of contents of luggage items derived from a device that scans the luggage items with penetrating radiation, the device being characterized by introducing a certain distortion into the images of contents of luggage items

Methodology Applied

Scientific EffectPenetrating radiation imaging distortion: X-Ray

Data Source

PatentUS7899232B2Method and apparatus for providing threat image projection (TIP) in a luggage screening system, and luggage screening system implementing same

Publication Date: 2011.03.01 OPTOSECURITY

AI summary

A method and apparatus for testing luggage screening equipment operators is provides. A sequence of images of contents of luggage items derived from a device that scans the luggage items with penetrating radiation are received. The image generation device is characterized by introducing a certain distortion into these images of contents of luggage items. A display device is caused to display images derived from this sequence of images. Occasionally, the display device is caused to show a simulated threat in a luggage item by displaying a combined image derived based at least in part on an image in the sequence of images and a distorted threat image. The distorted threat image was derived by applying a distortion insertion process to a reference threat image wherein the distortion insertion process tends to approximate the certain distortion introduced in the images of contents of luggage items by the device that scans the luggage items with penetrating radiation.