Two-Dimensional Code Image Generation for Offline Verification
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Solution Overview
Problem
There is a need to verify the authenticity of two-dimensional codes offline, as existing methods rely on network access and cannot detect tampering without it.
Innovation Solution
An image generation method and device that parses an original two-dimensional code into a two-dimensional array and generates an image based on a preset pattern, allowing offline verification by comparing the resulting image with the original pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network access is used for two-dimensional code verification, then verification reliability is improved, but device complexity and operational constraints increase
Solution Approach 1:
The patent extracts the verification function from the network-dependent scanning process and implements it through local image generation and visual comparison. The core verification logic is extracted and embedded directly into the code generation process, eliminating the need for network access during verification.
Solution Approach 2:
The two-dimensional code system performs self-verification through the generated image pattern. The code structure itself contains the verification information, and the visual comparison process is performed locally by the user without requiring external network services or complex verification systems.
2Adaptability or versatility
If visual cryptography schemes are used for offline verification, then network independence is improved, but manufacturing and implementation complexity increases
Solution Approach 1:
The patent segments the verification process into simple visual comparison steps rather than complex cryptographic operations. The two-dimensional code is divided into recognizable patterns that can be visually compared, making the verification process simple to implement and understand without requiring complex manufacturing or cryptographic knowledge.
Data Source
Figure 1~2B
Figure 2C~3
Figure 4A~4B
AI summary
The present application discloses an image generation method and device. The method includes: parsing an original two-dimensional code into a two-dimensional array; and generating an image by using the two-dimensional array according to a preset pattern. The method can generate an image by using an original two-dimensional code on the basis of a preset pattern thereby verifying the original two-dimensional code by using the image. In this way, it can be judged, when there is no network available, whether the two-dimensional code is tampered. The present application has abundant use scenarios, is not limited by networks or mobile terminals, and makes two- dimensional code verification more interesting.