Screen Capture Unit for Video Conference Material Review
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Solution Overview
Problem
Participants in online video conferences face inconvenience as they cannot voluntarily view previous pages of shared material during presentations, especially when the presenter speaks quickly or when they need to review content before asking questions.
Innovation Solution
An information processing apparatus that captures screen areas as still image files at predetermined intervals and displays them, allowing users to selectively review previous images, with features like area detection and similarity determination to exclude redundant images, and generates data files for easy page-by-page review.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the presenter shares material pages sequentially during the presentation, then the presentation flows smoothly, but participants cannot view previous pages they may have missed or want to review
Solution Approach 1:
The system performs preliminary action by capturing and storing screenshots of material pages in advance as the presenter progresses through the material. This allows participants to access previously displayed pages without waiting for the presenter to revisit them, effectively preserving past content for later review.
Solution Approach 2:
The system creates copies of the material pages by capturing screenshots at predetermined time intervals. These copied images are stored and made accessible to participants, allowing them to review content without affecting the live presentation flow. The capture unit creates visual copies that can be accessed independently of the presenter's current page.
2Loss of information
If the system captures and displays all screenshots taken during the presentation, then participants can review all content, but the system generates excessive data and consumes unnecessary resources
Solution Approach 1:
The similarity determination unit extracts only the necessary screenshots by comparing each captured image with previously captured ones and identifying duplicates. Redundant screenshots that have high similarity to existing ones are excluded from storage and display, keeping only the unique or significantly different pages.
Solution Approach 2:
The system changes the parameter of screenshot capture by introducing similarity comparison as a filtering criterion. Instead of capturing all pages uniformly, the system dynamically determines which pages to capture based on their visual difference from previous pages, using similarity threshold parameters to control the capture rate.
3Loss of information
If the capture unit captures the full screen area, then all content is captured including important material, but unnecessary areas are also captured increasing data size
Solution Approach 1:
The capture unit segments the screen area by identifying and capturing only the specific region where material content is displayed, rather than capturing the entire screen. This segmentation allows the system to focus on relevant content areas while excluding unnecessary portions such as toolbars, side panels, or other interface elements.
Solution Approach 2:
The system applies local quality by differentiating between important and unimportant screen areas. The capture unit focuses high-quality capture on the material display region while excluding or reducing capture quality in peripheral areas, optimizing the balance between content completeness and data efficiency.
Data Source
AI summary
An information processing apparatus executes an application for transmitting and receiving video and voice to and from another information processing apparatus through a network, and includes a processor that: captures a screen area including at least a part of a picture among screen areas of a display in which the picture received from the other information processing apparatus using the application is displayed, as a still image file every predetermined time; and displays, on the display, at least a part of images of a series of captured still image files while continuing the capture every predetermined time during the running of the application.