Logo-Added Two-Dimensional Code Cell Sizing and Lightness Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Logo-added two-dimensional codes face issues with readability due to post-printing processing and ambient light effects, and design integrity is compromised as cell size changes, leading to incorrect information representation.
Innovation Solution
A logo-added two-dimensional code creation device and method that divides a logo image into regions based on cell lightness, adjusts cell lightness values, and varies cell sizes to ensure correct readability and design integrity, using a Lab color space and image analysis to determine appropriate cell settings and sizes for accurate information representation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cells of uniform size are used in logo-added two-dimensional codes, then the structure is simple and easy to manufacture, but the design integrity of the logo image is impaired as cell size increases and readability is impaired as cell size decreases
Solution Approach 1:
The patent applies local quality by varying cell sizes according to their position in the matrix. Cells in different regions (e.g., corner regions vs. center regions) have different sizes, allowing larger cells in areas where logo design integrity is less critical and smaller cells in areas where readability is more important, thus resolving the contradiction between manufacturing simplicity and design precision
Solution Approach 2:
The patent introduces dynamic cell sizing where the cell size is not fixed but varies based on position within the two-dimensional code matrix. This dynamic adjustment of cell dimensions allows optimization of both logo integrity and readability across different regions, moving away from the static uniform cell size approach
2Device complexity
If cells of given or lower lightness are superimposed on logo image parts that can be read as 0 or 1, then the code structure is simple, but the information may not be read correctly under the influence of post-printing treatment and/or ambient light
Solution Approach 1:
The patent applies parameter changes by using multiple lightness levels (not just binary black and white) for cells. By varying the L value (lightness parameter in Lab color space) of cells based on the lightness of the underlying logo image regions, the patent creates multiple distinguishable cell types that maintain readability under various lighting conditions while preserving logo integrity
Solution Approach 2:
The patent applies preliminary action by pre-determining the lightness values of cells based on analysis of the logo image's lightness distribution before final code generation. This preliminary analysis allows the system to anticipate and compensate for potential readability issues under different lighting conditions, ensuring reliable reading regardless of ambient light or post-printing effects
Data Source
AI summary
A logo-added two-dimensional code creation device determines the color of a two-dimensional code to be superimposed on a logo image by adjusting the L value indicating the color lightness, whereby a logo-added two-dimensional code readable regardless of influence of post-printing processing and/or ambient light can be created. The logo-added two-dimensional code has smaller cells superimposed on the tiger character that can easily lose the design integrity than the cells superimposed on the background part, ensuring the design integrity of the logo image without impairing the readability of information.