Projector Projection Direction Adjustment for Surface Pattern Correction
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Solution Overview
Problem
Existing projector technologies fail to maintain high image quality when projecting onto non-standard, patterned, or uneven surfaces, as they do not adequately account for the environmental factors of the projection surface.
Innovation Solution
A projector apparatus with a projection direction variable unit that adjusts the image projection based on acquired information from the target surface, using a combination of mechanical shifting and tilt adjustments to optimize image alignment and color correction, ensuring the best possible image quality on varied surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a projector projects an image onto a non-standard, patterned, or uneven surface, then the projection can be performed in various environments, but the image quality is greatly reduced due to surface effects
Solution Approach 1:
The acquiring unit captures the projection surface in advance before actual projection, and the control unit analyzes the surface characteristics (patterns, unevenness, color) beforehand. This preliminary acquisition and analysis enables the projector to pre-calculate correction data for distortion, color shift, and brightness unevenness, thereby maintaining high image quality when projecting onto non-standard surfaces
Solution Approach 2:
The control unit dynamically adjusts projection parameters including the projection direction angle, focal distance, and image correction data based on the acquired surface information. By changing these parameters according to the specific surface characteristics (pattern density, unevenness degree, color tone), the system optimizes image quality for each projection environment while maintaining versatility across different surfaces
2Manufacturing precision
If correction data is created for each partial region to correct color and illuminance unevenness, then image quality is improved, but the system complexity increases
Solution Approach 1:
The projector system performs self-diagnosis and self-correction by using its own projection light to illuminate the surface and capture the reflected image. The control unit automatically analyzes the captured image to detect surface characteristics and generates appropriate correction data without requiring external measurement devices or manual calibration, thereby improving image quality while keeping the system relatively simple
Solution Approach 2:
The acquiring unit serves multiple functions: it captures the projection surface characteristics, detects surface patterns and unevenness, and provides data for both distortion correction and color/brightness correction. This multi-functional approach consolidates what would otherwise require separate systems into a single unit, maintaining image quality improvement while minimizing added complexity
Data Source
AI summary
A projector apparatus includes a projection unit that projects an image, a projection direction variable unit configured to mechanically change a direction of the image to be projected by the projection unit, an acquiring unit that acquires the image projected by the projection unit onto a target of projection, and a control unit that determines a direction of projection to be changed by the projection direction variable unit, based on information on a plurality of projection images acquired by the acquiring unit.