Security Pattern Generation with Graphic Object Overlay
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Solution Overview
Problem
Current security printing techniques, relying on geometric repeat patterns, have become less effective due to their widespread availability and ease of reproduction, making it challenging to prevent forgery and counterfeiting, especially as high-resolution printing technologies become more accessible to commercial printers.
Innovation Solution
A security pattern generation method that overlays graphic objects within generated geometric repeat patterns, ensuring the patterns remain intact and difficult to reproduce by scaling and placing graphic objects between distinct end points, thereby enhancing forgery prevention and counterfeiting protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If geometric repeat patterns are used in security printing, then the patterns provide structural complexity and visual appeal, but the patterns become easily reproducible and less effective against counterfeiting
Solution Approach 1:
The pattern generation process is segmented into multiple independent stages: generating base geometric patterns, creating overlay elements, and combining them with controlled intersections. This segmentation allows each component to be optimized independently while maintaining overall complexity that resists counterfeiting.
Solution Approach 2:
The invention implements nested patterns where geometric shapes are placed within other geometric shapes, and overlay elements intersect with base patterns. This nested structure creates multiple layers of complexity that must be reproduced simultaneously, significantly increasing the difficulty of counterfeiting while maintaining visual coherence.
2Manufacturing precision
If high-resolution printing is used, then the security patterns are rendered with fine detail, but the patterns become more accessible to commercial printers and easier to copy
Solution Approach 1:
The security pattern uses composite geometric structures combining multiple shape types (circles, squares, triangles, polygons) with varying properties. These composite patterns require precise rendering of multiple geometric primitives with specific spatial relationships, making high-quality reproduction difficult for commercial printers even with high resolution capabilities.
Solution Approach 2:
The invention adds a temporal dimension to the pattern by incorporating controlled intersections and overlays that create complex spatial relationships. This multi-dimensional approach transforms simple 2D geometric patterns into complex multi-layered structures that are difficult to replicate, effectively using dimensional complexity to counteract the accessibility of high-resolution printing.
3Productivity
If simple geometric patterns are generated, then the generation process is computationally efficient, but the patterns are easy to analyze and reproduce
Solution Approach 1:
The invention performs preliminary generation of base geometric patterns using efficient algorithms, then applies overlay elements and intersection logic in subsequent stages. This preliminary action allows the system to generate the foundational pattern structure quickly while adding complexity in later processing stages, maintaining computational efficiency while increasing pattern analysis difficulty.
Solution Approach 2:
The pattern generation incorporates dynamic elements where overlay shapes are positioned and sized relative to base patterns, creating adaptive complexity. The system dynamically adjusts the number, position, and intersection of overlay elements based on the base pattern structure, maintaining generation efficiency while producing unique complex patterns that are difficult to analyze and reproduce.
Data Source
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AI summary
The present invention is a security pattern generation method comprising the steps: - generating (100) a plurality of draw instructions to define a plane filling line pattern (105) wherein the plane filling line pattern comprises a repeating sub-pattern which defines a line by a sequence of draw instructions; and - searching (300) the sequence of draw instructions in the plurality of draw instructions and, if found, overlaying (400) the searched sequence of draw instructions by a graphic object (205, 207) which is scaled to fit and scaled between the two distinct end points of the line.