Projected Image Enhancement for Presenter Occlusion
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Solution Overview
Problem
Conventional projectors often cause embarrassment and distraction during presentations due to image occlusion by presenters, who are positioned between the projector and the screen, leading to partial image display on their bodies and potential blinding by bright light.
Innovation Solution
A projected image enhancement system that uses a camera to capture the projected image and compare it with the actual image, generating a key to identify occluded pixels, which are then modified in subsequent images to prevent light from striking the occluding objects, thereby reducing or eliminating image display on the presenter and minimizing light intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the projector projects bright light for clear image display, then the image visibility is improved, but the presenter positioned between the projector and screen is blinded or irritated
Solution Approach 1:
The system applies different light intensity characteristics to different spatial regions of the projected image. Specifically, it identifies the presenter's location and applies reduced intensity or blackout to those specific regions while maintaining normal brightness in other areas, thus resolving the contradiction between overall image visibility and localized light irritation
Solution Approach 2:
The system introduces an intermediary processing layer (the image enhancement system with camera, processor, and modifier) between the projector and the presenter. This intermediary detects the presenter's position and dynamically adjusts the projected light in real-time, preventing direct illumination of the presenter while preserving the overall projection function
2Ease of operation
If the presenter stands between the projector and projection screen for presentation, then the presenter can interact with the audience, but the presenter's body occludes portions of the projected image causing embarrassment and distraction
Solution Approach 1:
The system performs preliminary detection of the presenter's position using a camera before the occlusion problem occurs. By continuously monitoring and pre-identifying the presenter's location, the system can proactively adjust the projected image to compensate for upcoming occlusions, maintaining image integrity despite presenter movement
Solution Approach 2:
The system uses a camera to create a visual copy or representation of the presenter's position and the projected image. By comparing the captured image with the intended projection, the system generates a difference map that identifies occluded regions, allowing it to reconstruct or compensate for the missing image portions in subsequent projections
Data Source
AI summary
A first image is provided to a projector, which is configured to project the first image on a projection screen. A captured first image is received from a camera configured to capture the projected first image and an occluding object between the projector and the projection screen. A key including a difference between the captured first image and the first image is generated. A second image is modified according to the key to generate a new second image. The new second image is provided to the projector, which is further configured to project the new second image.