Document Image Capture and Annotation for Video Conferencing
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Solution Overview
Problem
In video conferencing and teaching, sharing physical documents is cumbersome as it often results in shaky images and small image ratios, making it difficult for audiences to see content clearly, and annotations are hard to apply without obscuring the document.
Innovation Solution
An electronic device with an image capturing unit, display, and input unit that captures and displays physical document images, allowing simultaneous annotation and image display, eliminating the need to physically hold the document and ensuring stable, clear viewing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a speaker holds a physical document in front of the camera to share it, then the document can be displayed to the audience, but the image becomes shaky and the image ratio is too small for clear viewing
Solution Approach 1:
The patent uses an image capturing unit to capture the physical document and creates a digital copy (document image) that is then displayed on the display unit. This digital copy replaces the need to physically hold the document in front of the camera, eliminating shakiness and improving image stability while maintaining the ability to share the document content with the audience
Solution Approach 2:
The patent introduces an image capturing unit as an intermediary device between the physical document and the camera. Instead of placing the physical document directly in front of the camera (which causes shakiness), the image capturing unit captures the document and provides a stable digital image to the display system, mediating the transmission of document information
2Loss of information
If a speaker marks key points or annotations on the physical document, then the key points can be highlighted, but the physical document becomes covered and obscures the content
Solution Approach 1:
The patent creates a digital copy of the document that can be annotated without affecting the original physical document. The annotation unit allows speakers to add markings, highlights, and notes to the digital document image displayed on the display unit, while the original document remains visible and unobscured for reference
Solution Approach 2:
The patent transitions the annotation process from the physical dimension (writing on the physical document surface) to the digital dimension (annotating the document image on the display). This dimensional shift allows annotations to be added without physically covering the document, as the annotations exist in a separate digital layer that can be overlaid on the display without affecting the original document
3Adaptability or versatility
If a speaker uses conventional methods to share physical documents in video conference, then the document can be shown, but the user experience is poor due to shakiness and small image ratio
Solution Approach 1:
The patent creates a multi-functional system that combines document capture, display, annotation, and sharing capabilities in one integrated setup. The image capturing unit can capture various types of physical documents, the display unit can show them in high quality, and the annotation unit can add markings - all while maintaining stability and clarity, providing a universal solution for document sharing that improves user experience
Data Source
AI summary
An electronic device and a display method for video conference or video teaching. The electronic device includes an image capturing unit, a display, an input unit, and a processor. The image capturing unit captures a first document image of a physical document. The input unit generates annotation information. The processor controls the display to display the first document image. When the processor receives the annotation information during a period of time that the image capturing unit is capturing the first document image and the display is simultaneously displaying the first document image, the processor controls the display to simultaneously display the first document image and the annotation information.


