Mobile Projector Surface Tracking and Content Adaptation
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Solution Overview
Problem
Conventional projection systems are static and struggle to maintain projection quality when the projector moves, leading to issues such as varying brightness and distorted images due to changing distances and orientations relative to the projection surface.
Innovation Solution
A mobile projection system that includes a vehicle-mounted projector and detector, which analyzes the projection surface and adjusts the content in real-time to account for changes in position and surface characteristics, ensuring consistent projection quality across different locations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the projector is moved dynamically to update the projection location, then the adaptability of the projection system is improved, but the projection quality deteriorates due to varying brightness and distorted images
Solution Approach 1:
The system dynamically adjusts projection parameters based on real-time detector measurements. As the projector moves to different locations, the system continuously updates the projection surface characteristics and modifies the content accordingly, transforming a static projection system into a dynamic one that adapts to changing conditions while maintaining quality
Solution Approach 2:
The detector provides real-time feedback about the projection surface characteristics and projector position. This feedback loop allows the system to measure actual projection conditions and adjust the content and projection parameters to compensate for changes in distance, angle, and surface properties, thereby maintaining consistent projection quality
2Illumination intensity
If the projector moves closer to the projection surface, then the brightness increases, but the projection quality becomes non-uniform
Solution Approach 1:
The system applies different brightness adjustments to different regions of the projected content based on the local distance to the projection surface. Areas closer to the projector receive dimming adjustments while farther areas maintain higher brightness, creating a compensated uniform appearance across the entire projection surface
Solution Approach 2:
The system dynamically changes the brightness parameter of the projected content based on the measured distance between the projector and projection surface. By adjusting the luminance values in real-time according to position data, the system maintains consistent perceived brightness despite physical movement
3Adaptability or versatility
If the projector orientation changes relative to the projection surface, then the projection location flexibility is improved, but image distortion occurs due to pixel blowby
Solution Approach 1:
The system dynamically warps and transforms the projected content in real-time based on the projector's orientation and position. As the projector tilts or rotates, the system applies corresponding geometric transformations to the image data, ensuring that the projected image remains undistorted despite changes in projection angle
Solution Approach 2:
The detector provides feedback about the projector's orientation and position relative to the projection surface. This information is used to calculate the appropriate image transformation parameters, allowing the system to pre-distort the content in the opposite direction of the expected projection distortion, thereby canceling out the blowby effect
Data Source
AI summary
A method to project content from a moving projector. The method includes analyzing an object to identify a projection surface; determining a first position of a projector relative to the projection surface; modifying a first frame of a content for projection onto the projection surface based on the projection surface and the first position of the projector; projecting the first frame of the content from the projector onto the projection surface; determining a second position of the projector relative to the projection surface; modifying a second frame of the content based on the projection surface and the second position; and projecting the second frame of the content from the projector onto the projection surface.