Image Embedding Positioning for Borderless Printing Robustness
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Solution Overview
Problem
Existing techniques for embedding additional information in images, such as watermarks, face challenges when borderless printing is performed, as the embedded markers can be cropped, leading to reduced readability and robustness of the embedded information.
Innovation Solution
An image processing method that determines the optimal position for embedding additional information based on printable area information, ensuring the markers are placed to minimize loss during borderless printing, allowing for increased data capacity and readability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If additional information is embedded in the entire image including edge portions, then the amount of embeddable information increases, but the reliability of information extraction decreases due to cropping during borderless printing
Solution Approach 1:
The patent applies local quality by differentiating the treatment of different regions within the image. The embeddable area is defined to exclude edge portions that may be cropped, creating a distinct safe zone with different properties (guaranteed retention) from the edge zones (subject to cropping). This allows the system to maximize information embedding within the safe zone while maintaining extraction reliability.
Solution Approach 2:
The patent performs preliminary action by determining the printable area and calculating the embeddable area before embedding additional information. By pre-identifying the safe zone where markers will not be cropped, the system ensures that information extraction reliability is maintained from the outset, rather than attempting to recover from cropping issues after embedding.
2Area of stationary object
If markers are placed at the edges of the image to maximize coverage, then the area for embedding information increases, but the manufacturing precision of the final output decreases due to trimming loss
Solution Approach 1:
The patent creates a distinct embeddable area with different spatial properties from the rest of the image. By defining this area to exclude edge portions, the system ensures that markers embedded within this zone maintain their positional integrity after printing and trimming, while still maximizing the usable embedding area.
Solution Approach 2:
The patent converts the harmful effect of trimming (which crops edge portions) into a beneficial constraint by defining the embeddable area specifically to exclude these vulnerable regions. This transforms the trimming process from a source of error into a known boundary condition that guides optimal marker placement.
Data Source
AI summary
An image processing method includes: a first obtaining step of obtaining data of an image; a second obtaining step of obtaining additional information; a third obtaining step of obtaining information related to a printable area of a print medium on which the image based on the data obtained in the first obtaining step is printed; determining step of determining a position where the obtained additional information is embedded in the image on the basis of the information obtained in the third obtaining step; and embedding step of embedding the additional information with reference to the determined position.