Watermark Clarity via Dual-Layer Transparency Segmentation
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Solution Overview
Problem
Existing watermark printing technologies face challenges in ensuring that watermark images are clearly recognizable, especially in transparent mode, as they can be obscured by the main image or appear too light and difficult to read due to uniform transparency processing.
Innovation Solution
An information processing device with a transparency adjustment unit that generates an overlap image by stacking a main image and two watermark images with different transparencies, where the first image has higher transparency to cover the main image in overlap areas and the second image maintains its original transparency, allowing both images to be clearly distinguishable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the watermark image is printed in the background mode (main image written on watermark image), then the watermark image is completely covered by the main image, but the watermark image becomes unrecognizable to readers
Solution Approach 1:
The watermark image is segmented into two separate images: a first watermark image with high transparency and a second watermark image with low transparency. These segmented images are then overlaid in a specific sequence (second image at bottom, main image in middle, first image at top) to resolve the contradiction between visibility and recognizability.
Solution Approach 2:
Different parts of the watermark functionality are assigned different transparency qualities. The first watermark image uses high transparency to allow main image visibility, while the second watermark image uses low transparency to ensure watermark recognizability in non-overlap areas. This local differentiation of transparency quality resolves the contradiction.
2Reliability
If the watermark image undergoes transparency process in the transparent mode, then readers can recognize both main image and watermark image in overlap portions, but the entire watermark image becomes light and difficult to recognize in non-overlap areas
Solution Approach 1:
The single transparency-processed watermark is segmented into two images with different transparency levels. The first image receives full transparency processing for overlap areas, while the second image maintains higher opacity for non-overlap areas, preventing the entire watermark from becoming too light.
Solution Approach 2:
Different transparency intensities are applied to different functional parts of the watermark system. The first watermark image applies strong transparency locally in overlap regions, while the second watermark image applies minimal transparency in non-overlap regions, creating local quality differentiation that resolves the brightness contradiction.
3Ease of manufacture
If a single transparency value is applied to the watermark image, then the processing is simple, but the watermark cannot be clearly recognized in both overlap and non-overlap areas simultaneously
Solution Approach 1:
The watermark processing is segmented into two distinct processing paths: one for the first watermark image (high transparency) and one for the second watermark image (low transparency). This segmentation allows different transparency values to be applied, improving recognition clarity while maintaining relatively simple processing through automated layer management.
Solution Approach 2:
The solution adds a dimensional aspect by introducing multiple watermark layers with different transparency properties. Instead of varying transparency within a single layer, the system uses vertical stacking of multiple layers, each with fixed transparency values, thereby resolving the contradiction through dimensional expansion.
Data Source
AI summary
There is provided an information processing device which comprises a transparency adjustment unit to adjust transparency of a watermark image which is to be added to a main image to prepare data of a first image having first transparency and data of a second image having second transparency, wherein each of the first and second images corresponds to the watermark image and the first transparency of the first image is higher than the second transparency of the second image. The information processing device further comprises an overlap processing unit to generate data of an overlap image of the main image, the first image and the second image such that the second image, the main image and the first image overlap with each other in bottom-to-top order.