Dynamic Watermark Visibility Control for Electronic Blackboards
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Solution Overview
Problem
The challenge is to maintain the visibility of a visual image displayed on an electronic blackboard while allowing for the display of semitransparent watermarks, such as 'Confidential' or 'Private', without obstructing the desired visual image, especially when characters overlap with the image being viewed.
Innovation Solution
An image processing apparatus that controls the display of a watermark image based on the presence or absence of an input visual image from an external device, switching between displaying the watermark and the visual image to ensure high visibility of the desired image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a semitransparent watermark image is always displayed on the electronic blackboard, then confidentiality information can be continuously reminded to participants, but the visibility of the visual image from the PC is obstructed when characters overlap with the image
Solution Approach 1:
The watermark image display is made dynamic by detecting whether a visual image is being input from an external device. When a visual image is detected, the watermark image is hidden to prevent obstruction. When no visual image is input, the watermark image is displayed to maintain confidentiality indication. This dynamic switching resolves the contradiction between continuous confidentiality reminder and visual image visibility.
2Reliability
If a semitransparent image is displayed to allow participants to view handwritten contents while viewing the image, then information security is maintained, but it becomes difficult for participants to specify and obtain the visual image of the PC
Solution Approach 1:
The system dynamically adjusts watermark visibility based on user intent detection. When a still image acquisition operation is detected, the watermark image is hidden temporarily to allow clear capture of the visual image. After the acquisition is complete, the watermark image is restored. This dynamic behavior maintains information security during normal display while enabling easy image capture when needed.
Solution Approach 2:
The system uses feedback from operation detection to control watermark display. When the system detects a still image acquisition operation, it responds by hiding the watermark image to facilitate successful capture. This feedback mechanism ensures that the watermark does not interfere with the image capture process while maintaining security during regular viewing.
Data Source
Figure 1A~1B
Figure 1C~1D
Figure 2
AI summary
An image processing apparatus for displaying an input visual image input from an external device includes: a first image acquiring unit configured to acquire a first image stored in a storage unit; a second image acquiring unit configured to acquire a second image from the input visual image; an image determining unit configured to determine that the second image is to be displayed without displaying the first image when the input visual image input from the external device does not satisfy a predetermined condition, configured to determine that the first image and the second image are to be displayed when the input visual image input from the external device satisfies the predetermined condition, and configured to determine that the first image is to be displayed when the input visual image is not being input from the external device; an image superimposing unit configured to superimpose the first image with the second image when the image determining unit determines that the first image and the second image are to be displayed; and a display unit configured to display, on a display part, the first image and the second image superimposed by the image superimposing unit.