Non-Planar Surface Projection With Geometric Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Tiled display systems face issues with seams between display devices, distortion, and alignment when displaying planar images on non-planar surfaces without correction, leading to an inconsistent and distracting visual experience.
Innovation Solution
A method for displaying multiple image streams involves processing these streams to generate corrected images, which are then projected onto a non-planar surface using projectors, employing geometric and photometric corrections to ensure undistorted and seamless alignment across the surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If planar images are displayed on non-planar surfaces without correction, then the display system is simple and easy to implement, but the images appear distorted and unaligned
Solution Approach 1:
The system performs preliminary geometric and photometric corrections on the image streams before projection. Correction parameters are pre-calculated based on the non-planar surface geometry, and images are pre-warped to compensate for expected distortions, ensuring undistorted appearance on the curved surface without requiring complex real-time processing during display
Solution Approach 2:
Different regions of the image stream are corrected with different parameters tailored to their specific location on the non-planar surface. Each pixel or region undergoes customized geometric transformation and photometric adjustment based on its position, normal vector, and distance from the projector, enabling precise local alignment and brightness uniformity across the entire curved surface
2Area of stationary object
If multiple display devices are used to create tiled displays, then the display area is increased, but seams between devices become visible and detract from the experience
Solution Approach 1:
Multiple image streams from different display devices are merged into a single coordinated projection system. The system treats the tiled arrangement as one unified display surface, applying continuous geometric correction across device boundaries and using photometric blending to smooth transitions, making the seams between individual devices imperceptible
Solution Approach 2:
A central processing system acts as an intermediary between multiple display devices and the final image output. This intermediary coordinates the image streams, applies uniform correction parameters across all devices, and manages photometric blending at boundaries, eliminating visible seams by mediating the interaction between multiple devices
3Adaptability or versatility
If planar images are projected onto non-planar surfaces, then the visual immersion is enhanced, but geometric distortion occurs without correction
Solution Approach 1:
The system dynamically changes geometric and photometric parameters based on the target non-planar surface characteristics. Correction parameters including transformation matrices, blending weights, and brightness compensation factors are adjusted according to surface curvature, viewer position, and projector geometry, enabling accurate image reproduction on various curved surfaces while maintaining geometric fidelity
Data Source
AI summary
One form of the present invention provides a method of displaying multiple image streams that includes providing a first plurality of image streams, processing the plurality of image streams, thereby generating at least one processed image stream, and projecting the at least one processed image stream onto a non-planar surface with at least one projector, thereby generating a plurality of different projected image streams at a corresponding plurality of different positions on the non-planar surface.