Projection System Self-Adaptive Adjustment Non-Planar Surfaces
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Solution Overview
Problem
Current projection systems face challenges in effectively correcting distortions on non-planar surfaces due to misalignment, overlap, or blurring of patterns, which hinders accurate pattern coordinate determination and image correction.
Innovation Solution
A projection system comprising a first projection device, an image capturing device, and a processing device that projects and captures sub-pattern arrays in time-division, allowing the processing device to determine correct pattern coordinates and order, enabling effective adjustment and correction of the projection image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a complete pattern array is projected onto a non-planar projection surface, then the projection coverage is improved, but the pattern alignment and coordinate determination accuracy deteriorates due to misalignment, overlap, or blurring
Solution Approach 1:
The complete pattern array is divided into multiple sub-pattern arrays that are projected sequentially in time-division manner. Each sub-pattern array contains a subset of patterns that can be clearly captured without overlap or blurring, even on non-planar surfaces. This segmentation allows the system to maintain measurement precision while still covering the entire projection area through multiple sequential projections.
2Productivity
If multiple patterns are projected simultaneously on a non-planar surface, then the projection efficiency is improved, but the pattern order determination and coordinate accuracy deteriorates due to misalignment and overlap
Solution Approach 1:
The system uses periodic action by projecting sub-pattern arrays in sequential time-division manner rather than simultaneously. Each sub-pattern array is projected, captured, and processed in sequence, ensuring that pattern order and coordinate information are preserved. The periodic projection-capture-process cycle maintains information integrity while systematically covering the entire projection area.
3Ease of operation
If the projection device projects on a non-planar surface without adjustment, then the operation simplicity is improved, but the projection image quality deteriorates due to distortion and misalignment
Solution Approach 1:
The system implements self-service through automatic projection correction. The processing device automatically captures the projected patterns, determines their coordinates and order, calculates distortion information, and generates correction parameters without manual intervention. This self-service mechanism maintains operation simplicity while significantly improving projection image quality on non-planar surfaces.
Solution Approach 2:
The system uses feedback by capturing the actual projected pattern array image, comparing it with the original pattern array, and using the distortion information to generate correction parameters. This feedback loop enables the projection device to automatically adapt to non-planar surfaces and improve projection image quality while maintaining ease of operation.
Data Source
AI summary
A projection system and a self-adaptive adjustment method are provided. The projection system includes a projection device, an image capturing device, and a processing device. The projection device sequentially projects sub-pattern arrays of a pattern array to a projection region of a projection surface. The image capturing device sequentially captures the sub-pattern arrays projected on the projection surface to output pattern images. The processing device analyzes the pattern images to obtain pattern coordinates and a pattern order of projected patterns in each pattern image. The processing device determines at least a part of the projected patterns to be effective patterns according to the pattern coordinates and the pattern order, and adjusts the projection device according to the effective patterns. The projection system and the self-adaptive adjustment method provide good projection quality.