Pointer Light Image Generation Using Exposure-Switched Background Correction
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Solution Overview
Problem
Existing image capture techniques struggle to maintain high-quality background regions when pointer light is projected strongly, often leading to deteriorated image quality in these areas.
Innovation Solution
An image generation device and method that adjusts camera exposure to capture images with changed brightness levels, allowing for detection and correction of background regions to maintain high-quality drawing images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the camera shutter speed is adjusted to acquire an image in which the pointer light is projected strongly, then the pointer light detection is facilitated, but the image quality of the background region deteriorates
Solution Approach 1:
The patent divides the image processing into two separate stages: first capturing the pointer light trajectory with enhanced exposure, then capturing the background image with standard exposure. This segmentation allows each region (pointer light and background) to be captured with optimal exposure settings independently, resolving the contradiction between light detection accuracy and background image quality.
Solution Approach 2:
The patent performs preliminary capture of the pointer light trajectory before capturing the background image. By first acquiring the light trajectory data with modified exposure settings, then subsequently capturing the background with standard exposure, the system ensures that the pointer light detection is optimized without compromising the final background image quality.
2Measurement precision
If the exposure of the entire imaging surface is changed to capture the light, then the light detection is improved, but the brightness of the background region becomes inappropriate
Solution Approach 1:
The patent applies different exposure qualities to different regions of the image. The pointer light region is captured with enhanced exposure to improve detection, while the background region is captured with standard exposure to maintain appropriate brightness. This local differentiation of exposure quality resolves the contradiction between light detection capability and background brightness appropriateness.
Solution Approach 2:
The patent segments the imaging process into two distinct capture phases: one optimized for light trajectory detection with modified exposure, and another optimized for background capture with standard exposure. This segmentation ensures that each region receives the appropriate exposure treatment, preventing brightness degradation in the background while improving light detection.
3Ease of operation
If the exposure is adjusted to detect light from the captured image, then the pointer light can be easily detected, but the overall image quality deteriorates
Solution Approach 1:
The patent separates the detection process into two independent operations: first detecting the pointer light trajectory with enhanced exposure to ease detection, then capturing the background image with standard exposure to maintain overall image quality. This segmentation allows easy pointer light detection without sacrificing overall image quality.
Solution Approach 2:
The patent performs preliminary detection of the pointer light trajectory before final background image capture. By first easily detecting the light path with modified exposure settings, then subsequently capturing the high-quality background image with standard exposure, the system achieves ease of light detection while preserving overall image quality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the generation of high-quality drawing images even in background regions by adjusting exposure and correcting brightness levels, ensuring accurate detection and representation of pointer light trajectories.
Implementation Method 1
a camera that captures light emitted from an instruction device
Data Source
AI summary
The image generation device includes a camera that captures light emitted from an instruction device, and a processor that is configured to generate a drawing image based on a detection status in which the light is detected from a captured image, which is captured by the camera, in which the processor is configured to cause the camera to change an exposure of an entire imaging surface to capture the captured image, detect the light from the captured image, which is captured in a state in which the exposure is changed, and record the drawing image, which is generated based on the detection status of the light, by correcting a brightness of a background region, which is a background of the light.