Ghost Image Identity Document Verification
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Solution Overview
Problem
Existing identity documents with stereographic images for authentication are difficult to verify visually, as the stereographic perception can be adversely affected by image calculation, making them less suitable for security and identification purposes, and users often overlook these marks due to lack of time at checkpoints.
Innovation Solution
An identity document featuring a two-dimensional image and a ghost stereo image on a single plane, where the ghost image is based on the two-dimensional image, allowing for quick authenticity verification without tilting the document, using interlaced and overlapping images applied with cylindrical or spherical lenses, and optionally including a floating image for additional security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If stereographic images are created by calculating rotated images from a photo, then a three-dimensional effect is achieved, but the authenticity verification becomes difficult and the images are less suitable for security documents
Solution Approach 1:
The patent creates a ghost image that is a copy of the original photograph but viewed from a different angle (typically 45 degrees). This ghost image is superimposed on the original photo, allowing users to verify authenticity by comparing features between the two images. The ghost image serves as a reference copy that maintains the reliability needed for security verification while still providing three-dimensional visual interest.
Solution Approach 2:
The patent adds a temporal or spatial dimension to the verification process by including multiple views (original photo and ghost image from different angle) in a single composite image. This allows users to mentally reconstruct the three-dimensional appearance of the person without relying on complex calculated rotated images, thereby maintaining verification reliability while achieving a multi-dimensional effect.
2Reliability
If multiple authentication marks including different angled images are applied, then security is enhanced, but users overlook these marks due to lack of time and complexity
Solution Approach 1:
The patent merges the authentication function and the visual identification function into a single composite image. The ghost image serves dual purposes: it provides security authentication through the angled view comparison and simultaneously enhances the visual identification by showing the person from another angle. This eliminates the need for separate authentication marks that users might overlook.
Solution Approach 2:
The composite image with the ghost view enables users to perform self-service verification by simply comparing features between the original photo and the ghost image. No additional tools, devices, or complex procedures are needed - users can immediately verify authenticity by looking for consistent facial features, clothing details, and other identifiable characteristics across both images.
3Reliability
If stereographic images are created using laser engraving through lens structures, then authentication marks are created, but the images are difficult to verify visually without tilting the document
Solution Approach 1:
The patent incorporates a second angular dimension by including a ghost image viewed from a different angle (typically 45 degrees) directly in the composite image. This allows users to verify authenticity by comparing features between the original photo and the ghost image without needing to tilt the document or view it from multiple physical angles. The different angular perspective is achieved through image processing and composition rather than physical document manipulation.
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
Enables immediate recognition of the authenticity of the image by users, reducing the risk of image distortion and enhancing the accuracy and effectiveness of visual inspection, while providing an additional security feature that is easily detectable within normal viewing distances.
Implementation Method 1
using interlaced and overlapping images applied with cylindrical or spherical lenses
Data Source
AI summary
An identity document includes in a single plane a two-dimensional image and under optical elements a ghost image for verifying the authenticity of the two-dimensional image. The ghost image is a stereo image and the stereo image is based on the two-dimensional image. The stereo image includes at least two images of the person on the identity card wherein at least one of the two images is a calculated image. The stereo image may further include a floating image, the floating image being arranged to be perceived to float over the ghost image.