Interactive Presentation System with External Operation Zone
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Solution Overview
Problem
Conventional interactive presentation systems face difficulties in allowing users to perform operations on large or high-mounted image projection areas, especially for users of shorter stature, as they cannot reach or point to certain areas on the screen, leading to incomplete content display due to the need for menu screens to occupy space within the projection area.
Innovation Solution
An interactive presentation system that allows operation areas to be set outside the image projection area, using an imaging device to capture and analyze pointing positions, and a control device to execute commands based on calculated positional information, enabling users to point to arbitrary positions outside the projection area and assign commands to demarcated areas during initialization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the image projection area is made large to display more content, then the content display area is improved, but the ease of operation deteriorates because users cannot reach or point to certain areas on the screen
Solution Approach 1:
The operation area is separated from the projection area and placed in a different spatial dimension (below the screen). Users interact by pointing to positions on the projection screen, and the system captures these positions using an imaging device. This dimensional separation allows the projection area to be large for content display while the operation area remains accessible to users.
Solution Approach 2:
An imaging device (camera) acts as an intermediary between the user's pointing action and the system's command execution. The imaging device captures the position where the user points on the projection screen and transmits this information to the control device, which then executes the corresponding command. This mediator enables operation of large screens without requiring direct physical access to all screen areas.
2Ease of operation
If a menu screen is displayed within the image projection area to enable interactive operations, then the ease of operation is improved, but the content display area deteriorates due to the menu screen occupying space
Solution Approach 1:
The operation interface (menu screen) is extracted from the projection area and placed in a separate operation area below the screen. Users point to positions on the projection screen to select commands, and the corresponding menu screen is displayed in the operation area rather than overlaying the content. This extraction eliminates the conflict between content display and operation interface space.
3Measurement precision
If the imaging device focuses on the image projection area to capture pointing positions, then the measurement precision of pointing positions is improved, but the ability to capture operation areas outside the projection area deteriorates
Solution Approach 1:
The focus position of the imaging device is made dynamic and adjustable. During content projection, the focus is set on the projection area for accurate pointing detection. During operation mode, the focus can be shifted to capture the operation area below the screen. This dynamic adjustment allows the system to maintain measurement precision for different operational contexts.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables users to interact with the system without being limited by screen size or height, ensuring all areas can be reached and operated, and prevents content overlap by allowing menu screens to be displayed outside the projection area, thus maintaining a larger content display space.
Implementation Method 1
an imaging apparatus 2 capable of taking an image of an imaging area 6
Data Source
AI summary
An interactive presentation system includes: an imaging device; an image analyzer that calculates information regarding a pointed position by using captured-image data; a controller that receives the information and operates based on an input from an input device; a storage device controlled by the controller to store the information; a pattern generator controlled by the controller to generate a pattern image; an image display device that receives an output from the pattern generator; and a projector that enlarges and projects an output from the image display device. Upon initialization based on the input from the input device, the controller defines a pointed position as a boundary position of a command, assigns the command to an area demarcated by the boundary position, and stores the boundary position in the storage device. After initialization, the controller compares a pointed position and the boundary position and executes the command associated to the information.