Projector Dynamic Resolution Control for Processing Load Reduction
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Solution Overview
Problem
Existing projectors face increased processing loads when detecting image manipulations due to high-resolution image capturing, requiring significant hardware performance to maintain high-accuracy processing.
Innovation Solution
A projector with an imaging unit, first and second processing units, and a control unit that adjusts image-capturing resolution based on the processing task, allowing for high-accuracy processing while minimizing processing load by switching between different operation states and resolutions for detection and distortion correction processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image-capturing resolution is increased to detect minute variations in captured images, then measurement precision is improved, but processing load increases
Solution Approach 1:
The patent applies dynamics by making the image-capturing resolution adjustable rather than fixed. The control unit dynamically changes the resolution between a first resolution (higher) for detecting minute variations and a second resolution (lower) for general processing. This allows the system to adapt the resolution level to the specific processing task, achieving high detection accuracy when needed while reducing processing load during routine operations.
Solution Approach 2:
The patent applies parameter changes by varying the image-capturing resolution parameter based on the processing requirements. The imaging unit captures images at different resolution levels depending on whether minute variation detection is required. This parameter adjustment enables the system to optimize between measurement precision and processing load by selecting appropriate resolution levels for different operational contexts.
2Productivity
If hardware performance is increased to support high-load image processing, then productivity is improved, but device complexity and cost increase
Solution Approach 1:
The patent reduces hardware complexity requirements by implementing dynamic resolution adjustment. Instead of requiring hardware capable of continuously processing high-resolution images at full load, the system dynamically switches between high and low resolution modes. This allows standard hardware to handle the variable processing loads, reducing the need for high-performance hardware while maintaining the capability to perform high-accuracy processing when needed.
Solution Approach 2:
The patent applies periodic action by alternating between high-resolution and low-resolution image capturing based on processing needs. Rather than continuously capturing and processing high-resolution images, the system periodically switches to lower resolution during tasks that don't require fine detail detection. This periodic variation in processing intensity reduces the sustained hardware performance requirements while maintaining peak processing capability.
Data Source
AI summary
A projector includes a manipulation detecting unit that performs a manipulation detecting process on the basis of captured image data of an imaging unit, and a correction control unit that performs a distortion correcting process on the basis of the captured image data. An imaging control unit sets an image-capturing resolution of the imaging unit to resolutions different from each other between a case where the manipulation detecting unit performs the manipulation detection process and a case where the correction control unit performs the distortion correcting process.