Integrated Projector Image Capture for Briefing Locus Tracking
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Solution Overview
Problem
Conventional briefing systems require separate operation of a notebook computer and a laser pointer, leading to inconvenience and inefficiency, as the motion locus of the red indication point cannot be continuously displayed on the projection screen, and the image capturing unit needs frequent adjustment and external power supply, affecting portability and usability.
Innovation Solution
A projector integrating a projection control unit and a fixedly disposed image capturing unit, allowing simultaneous projection and image capture, with a wireless pointer that projects an indication point and sends selection signals, eliminating the need for external power and reducing location adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the image capturing unit is externally connected to the computer, then the system can capture images of the projection picture and indication point, but the briefer has to prepare an external power supply and frequently adjust the location of the image capturing unit
Solution Approach 1:
The patent integrates the image capturing unit directly into the projector body, merging two previously separate devices (projector and image capturing unit) into a single integrated unit. This eliminates the need for external connections and power supplies, and the fixed internal positioning removes the need for manual location adjustments during briefing operations
Solution Approach 2:
The projector is designed to perform multiple functions: both projection of images and capturing of images containing the projection picture and indication points. This multi-functionality eliminates the need for separate external image capturing devices and their associated power supplies and positioning adjustments
2Adaptability or versatility
If the image capturing unit location is changed, then the unit can be repositioned for different briefing sites, but the reference coordinate of adjacent pictures becomes inconsistent and accurate locus calculation is compromised
Solution Approach 1:
By integrating the image capturing unit into the projector, the system ensures a fixed, predetermined spatial relationship between the projection optics and the image capture sensor. This fixed relationship maintains consistent reference coordinates across different briefing sites and situations, enabling accurate locus calculation without requiring repositioning adjustments
3Productivity
If the briefer operates both the notebook computer and laser pointer, then the briefing control and indication can be managed, but it becomes troublesome and time-consuming to switch between operations
Solution Approach 1:
The integrated projector-capturing unit system works in conjunction with the laser pointer to create a unified briefing control system. The captured images showing indication points are automatically processed to display motion loci, reducing the need for manual computer operations and allowing the briefer to focus on delivery rather than technical control
Solution Approach 2:
The system provides automatic feedback by capturing images of the projection picture with indication points and automatically displaying the motion loci of these points. This automated feedback loop eliminates the need for manual tracking and control operations, streamlining the briefing process
4Speed
If the motion locus of the red indication point is displayed instantaneously, then the indication can be shown on the projection screen, but the audience cannot clearly view the selected important contents continuously
Solution Approach 1:
The image capturing unit continuously captures images of the projection picture, and the system processes these images to display the continuous motion locus of indication points. This continuous capture and display process ensures that the audience can follow the motion path of important content throughout the briefing, rather than seeing only instantaneous positions
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 seamless display of marked key points on the projection screen, improving briefing quality by integrating projection and image capture functions, reducing operational complexity and enhancing portability with a single power supply.
Implementation Method 1
The projection control unit receives the screen image of the computer and projects it onto the projection screen to produce the projection picture
Implementation Method 2
The image capturing unit captures an image on the projection screen containing a region covered by the whole projection picture
Data Source
AI summary
A briefing system is used to project images onto a projection screen to form a projection picture. The briefing system comprises a pointer, a projector and a computer electrically connected to the projector. The computer outputs an image signal to the projector. The projector projects an image corresponding to the image signal onto the projection screen to form the projection picture. The indicator is used to project an indication point. The projector also captures the image of the projection picture and the indication point and transfers the image to the computer. The computer then calculates a location where the cursor on the computer screen should reach according to the location of the indication point on the projection picture and moves the cursor on the screen to there.