Embedding Metadata in Handwritten Strokes for Analog Traceability
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Solution Overview
Problem
When graphics or handwritten works created on computer devices are printed or converted from digital to analog form, the associated metadata is lost, leading to a lack of traceability and authenticity verification.
Innovation Solution
The implementation of a signal-carrying pattern that encodes digital information within handwritten or artistic strokes, allowing for the detection of alterations and maintaining metadata even in analog form, using techniques such as varying transparency and pressure-sensitive rendering to embed metadata within the artwork.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If graphics are converted from digital to analog form for printing, then the work can be displayed in physical form, but metadata is lost and authenticity verification becomes impossible
Solution Approach 1:
The patent applies preliminary action by embedding metadata into the digital graphic content before conversion to analog form. The system embeds metadata within the digital image data structure, creating a modified digital file that contains both the original graphic content and embedded metadata. When this modified digital file is printed or converted to analog form, the metadata is preserved in the output, enabling subsequent authentication and verification of the work's authenticity, creator information, and creation date even after the digital-to-analog conversion process
2Loss of information
If digital information is embedded within artwork strokes, then metadata can be preserved in analog form, but the complexity of the encoding system increases
Solution Approach 1:
The patent applies copying by embedding metadata within the digital image data structure in a way that creates a modified copy of the original digital content. The metadata is integrated into the digital file format (such as PNG, JPEG, or GIF) as embedded data within the image itself. This allows the metadata to be copied along with the graphic content during printing or scanning processes, preserving authentication information in analog forms without requiring separate embedding systems for each conversion process
Solution Approach 2:
The patent applies parameter changes by modifying the digital image data structure to include embedded metadata parameters. The system changes the parameters of the digital file format to accommodate additional data fields containing metadata such as creator information, creation date, and authentication data. These parameter modifications enable the metadata to be stored and transmitted with the graphic content through standard digital-to-analog conversion processes
3Ease of manufacture
If standard printing processes are used, then the conversion from digital to analog is simple, but no authentication or alteration detection is possible
Solution Approach 1:
The patent applies preliminary action by preparing the digital graphic content with embedded metadata before the printing process. The metadata is integrated into the digital image data structure in advance, creating a modified digital file that contains authentication information. When this pre-prepared digital file is printed using standard printing processes, the embedded metadata is transferred to the analog output, enabling subsequent authentication and alteration detection without requiring modification of the printing process itself
Solution Approach 2:
The patent applies copying by ensuring that the embedded metadata within the digital image data structure is copied along with the graphic content during the printing or scanning process. The metadata is integrated into the digital file format in a way that allows it to be reproduced in analog forms such as printed images or scanned documents. This copying mechanism enables standard printing processes to produce authenticated analog outputs that retain verification capabilities
Data Source
AI summary
In accordance with one aspect of the technology, handwritten works (e.g., notes) produced using computer devices are encoded with digital information that is persistently bound with such works, even after conversion into analog form. In accordance with another aspect of the technology, strokes of artwork or handwriting, or glyphs of computer-rendered text, are encoded in a form that permits any alteration of such work to be detected. A variety of other features and arrangements are also detailed.