Transparent Image Layer for Unperceivable Watermarking
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Solution Overview
Problem
Conventional unperceivable watermarking technologies either require extensive training with large quantities of watermark samples or damage the integrity of the original image by directly drawing watermarks on it, limiting their effectiveness and applicability.
Innovation Solution
A method and apparatus that set a transparent image layer on a terminal's display screen, allowing unperceivable watermark information to be drawn without altering the original image, and enable restoration of the watermark from screenshots or video frames using a hook function, without the need for extensive training on watermark samples.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If unperceivable watermarking technology is used to avoid impacting user reading, then watermarks become invisible to users, but the technology requires extensive training with large quantities of watermark samples
Solution Approach 1:
The patent uses a transparent image layer as a copy载体 to display watermarks, separating the watermark storage function from the original image. This allows watermark information to be stored and retrieved without requiring extensive training data, as the transparent layer can be directly manipulated to embed and extract watermark information.
Solution Approach 2:
The transparent image layer acts as an intermediary between the original image and the watermark information. It provides a dedicated space for watermark storage and retrieval, eliminating the need for complex training processes while maintaining watermark invisibility to users during normal viewing.
2Reliability
If watermarks are directly drawn on the original image to ensure integrity, then the original image integrity is maintained, but the watermark becomes perceivable and impacts user reading
Solution Approach 1:
The patent segments the image into an original image layer and a transparent image layer. The transparent layer is positioned above the original image and contains only the watermark information, allowing the original image to remain intact and unreadable while the watermark is stored separately in the transparent layer.
Solution Approach 2:
The transparent image layer uses color manipulation to make watermarks imperceptible to users during normal viewing. By adjusting color values and transparency levels, the watermarks become invisible or imperceptible while still maintaining their integrity for later retrieval and analysis.
3Device complexity
If conventional watermarking is used without transparent layers, then the process is simple, but watermark recognition effectiveness is limited and requires extensive training
Solution Approach 1:
The transparent image layer serves as a copy that can be independently manipulated to store and retrieve watermark information. This copying mechanism enhances watermark recognition effectiveness by providing a dedicated space for watermark data without requiring complex processing or extensive training.
Solution Approach 2:
The patent utilizes parameter changes in the transparent image layer, such as adjusting transparency levels, color values, and layer positioning, to optimize watermark visibility and recognition. These parameter adjustments enable effective watermark storage and retrieval while maintaining processing simplicity.
4Reliability
If watermarks are added to electronic documents for traceability, then document leak traceability is enabled, but the watermark may be removed or altered by users
Solution Approach 1:
The transparent image layer acts as an intermediary that captures watermark information when screenshots or videos are taken. Even if users try to remove or alter watermarks in the original document, the transparent layer preserves the watermark information in captured images, ensuring traceability stability.
Solution Approach 2:
The system performs preliminary action by capturing and storing watermark information in the transparent image layer before any potential removal or alteration can occur. This ensures that even if the original document is modified, the watermark traceability capability remains intact through the preserved transparent layer data.
Data Source
AI summary
This application discloses a watermark processing method, an electronic device, and a storage medium. The watermark processing method includes: obtaining to-be-inserted watermark information; setting a transparent image layer on a display screen of a terminal based on a size of an image layer window, where the size of the image layer window is determined based on a size of the display screen of the terminal; and drawing the watermark information on the transparent image layer at specified transparency.