Projector Obstacle Avoidance via Dynamic Image Deformation
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Solution Overview
Problem
Projectors often dazzle individuals in the path of projected light and obstruct the image when objects or people block the light, leading to partial image invisibility and information loss.
Innovation Solution
A projector equipped with an object detection unit, distance detection unit, and projection control unit that identifies and avoids the obstruction area by modulating light and adjusting the image projection to ensure the image is visible without loss, using techniques such as image deformation, division, or shrinkage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the projector projects light directly onto the projection surface, then the image brightness and visibility are improved, but objects or people in the light path block the image and cause information loss
Solution Approach 1:
The projection surface is divided into a visible area and an avoidance area. The projector segments the image projection path by identifying regions blocked by objects or people and projecting only into the visible area, thereby preventing information loss while maintaining image brightness in the unobstructed regions.
2Measurement precision
If the projector projects light directly onto the projection surface, then the image clarity is improved, but people in the light path are dazzled by the light
Solution Approach 1:
The projector applies local quality control by directing full-intensity light only toward the visible area of the projection surface while avoiding areas where objects or people are present. This ensures image clarity is maintained in the projected region while eliminating harmful light dazzle in occupied zones.
3Loss of information
If the projector adjusts the projection area to avoid obstacles, then information loss is prevented, but the projection system complexity increases
Solution Approach 1:
The projector employs feedback mechanisms by detecting the positions of objects or people in front of the projection surface and dynamically adjusting the projection area accordingly. The system continuously monitors the environment and modifies the visible and avoidance areas to prevent information loss while managing complexity through automated control.
Data Source
AI summary
A projector that modulates light emitted from a light source and projects the modulated image light on a projection surface, the projector including: an object detection unit for determining the position of an object that blocks projection of the image light; a distance detection unit for determining the distance to the object; and a projection control unit for determining an avoidance area where the object prevents the image light from reaching the projection surface based on the position of the object determined by the object detection unit and the distance to the object determined by the distance detection unit and projecting the image light in an area other than the avoidance area.