Blur Correction Assembly Synchronizes Mirror Position With Imaging Timing
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Solution Overview
Problem
Existing imaging systems face degradation in blur correction accuracy due to varying subject distances caused by the movement of a mobile object, leading to blurred images during infrastructure inspection.
Innovation Solution
An imaging system with a blur correction assembly that includes a mirror and a controller, which synchronizes the imaging device's timing with the mirror's position to ensure the axis perpendicular to the imaging target surface is parallel to the optical axis, reducing blur by adjusting the mirror's rotation based on the vehicle's speed and exposure time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If imaging is performed during movement of the mobile object, then imaging efficiency is improved, but blur occurs in the captured image
Solution Approach 1:
The blur correction amount is calculated in advance based on the moving speed of the mobile object before imaging occurs. The mirror is positioned at the calculated correction angle prior to exposure, ensuring that light rays are properly directed to the imaging element even during movement, thus preventing blur while maintaining imaging efficiency
Solution Approach 2:
The system dynamically adjusts the mirror's rotation angle based on the real-time moving speed of the mobile object. By continuously updating the blur correction amount according to speed changes, the system maintains optimal image clarity across varying motion conditions while preserving the ability to image during movement
2Manufacturing precision
If a saccade mirror is used to correct blur, then blur correction is achieved, but subject distance varies depending on moving speed, degrading correction accuracy
Solution Approach 1:
The system changes the mirror's rotation angle parameter based on the moving speed of the mobile object. By calculating the appropriate correction angle that compensates for speed-induced subject distance variations, the system maintains consistent subject distance equivalence across different motion states, ensuring accurate blur correction regardless of speed changes
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
The system effectively suppresses blur correction accuracy degradation by ensuring uniform subject distances and optimal exposure timing, resulting in clearer images during infrastructure inspection.
Implementation Method 1
by reflecting the light reflected from the imaging target from a mirror
Implementation Method 2
The mirror rotates for a predetermined exposure time
Data Source
AI summary
An imaging system includes an imaging device, a blur correction assembly that corrects a blur along a moving direction in a captured image, and a controller that controls an imaging timing of the imaging device. The blur correction assembly drives a blur corrector to make a blur correction along the moving direction. The blur corrector has a drive range including a reference position where an axis perpendicular to an imaging target surface is parallel to an optical axis of the imaging device, the optical axis being an axis of light injecting to the blur corrector from the imaging target surface. The controller causes the imaging device to start imaging when the blur corrector is located within a range where a difference from the reference position is less than or equal to a threshold during driving of the blur corrector.