Projector Optical Shutter Control for Background Area Filtering
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Solution Overview
Problem
Projectors face challenges in correcting projection images when obstructed by surrounding environments, leading to decreased user immersion due to exposed background areas and ambient illumination effects.
Innovation Solution
An electronic apparatus equipped with a sensor, optical shutter, and processor system that identifies and filters background areas by adjusting optical shutter transmittance based on sensing data, including color and illumination values, to enhance image correction and output quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the projector performs correction functions to adapt to the surrounding environment, then the projection image can be adjusted to match the projection surface conditions, but the background area remains exposed to ambient illumination which decreases user immersion
Solution Approach 1:
The patent extracts and removes the background area from the projection image by controlling the optical shutter to block light in regions identified as background. This separates the useful projection content from the harmful background exposure, eliminating ambient illumination interference in those areas while preserving the corrected projection image quality.
Solution Approach 2:
The patent applies different treatment to different areas of the projection image. The optical shutter is controlled to block light selectively in background areas while allowing light to pass through in foreground areas containing key information. This local differentiation resolves the contradiction by maintaining environmental adaptation for the overall image while specifically eliminating ambient illumination interference in background regions.
2Area of stationary object
If the projector outputs the complete projection image including background areas, then the full image content is displayed, but the exposed background area reduces user immersion and creates viewing inconvenience
Solution Approach 1:
The patent segments the projection image into foreground areas (containing key information) and background areas. By using image processing to identify and separate these regions, the system can then control the optical shutter to block background areas while maintaining projection of foreground areas, thus reducing harmful background exposure while preserving essential image content.
Solution Approach 2:
The patent extracts the background area identification from the complete projection image through image processing algorithms. Once identified, these background regions are removed from the projected output by controlling the optical shutter, effectively taking out the harmful element while retaining the useful projection content.
3Manufacturing precision
If the projector performs image correction based on sensing data, then the projection image quality is improved, but the processing time and complexity increase
Solution Approach 1:
The patent performs preliminary actions by capturing sensing data of the projection surface and performing image correction processing before the actual projection occurs. The processor analyzes the sensing data, identifies background areas, and pre-configures the optical shutter control patterns, thereby streamlining the overall process and reducing real-time processing complexity during projection.
Solution Approach 2:
The patent introduces an intermediary processing step where the processor acts as a mediator between the sensing data and the projection output. It performs image correction and background area identification, generating control signals for the optical shutter. This intermediary processing layer simplifies the overall system by centralizing the complex processing tasks in a dedicated component.
Data Source
AI summary
An electronic apparatus is provided. The electronic apparatus includes memory, a projection part, a sensor part, an optical shutter part, and at least one processor, and the at least one processor is configured to output, through the projection part, a first projection image at a projection surface, obtain, through the sensor part, first sensing data associated with the projection surface, obtain a second projection image by performing a correction function on the first projection image based on the first sensing data, identify a position of a background area from the first projection image, identify a position of a blocking area corresponding to the position of the background area, control the optical shutter part to perform a filtering function based on the position of the blocking area, and output, through the projection part, the second projection image.