In-Vehicle Camera Motion Compensation via Dynamic Magnification
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Solution Overview
Problem
Conventional in-vehicle cameras capture indistinct images due to vehicle movement during exposure time, leading to low recognition rates and insufficient driving safety enhancements.
Innovation Solution
An image capturing apparatus with a speed measurement unit, displacement calculating unit, capturing magnification rate-of-change calculating unit, and capturing timing control unit, which compensates for image blurring by adjusting capturing magnification and timing to maintain a clear image despite vehicle movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the exposure time is extended to capture clearer images, then the image quality improves, but the vehicle movement during exposure causes blurring
Solution Approach 1:
The patent applies the dynamics principle by making the capturing magnification adjustable and time-dependent. The capturing magnification is dynamically changed during the exposure time based on the measured vehicle speed, allowing the system to adapt to moving conditions and compensate for vehicle movement effects on image quality.
Solution Approach 2:
The patent implements parameter changes by modifying the capturing magnification parameter during exposure. The capturing magnification rate-of-change is calculated based on vehicle speed, and this parameter is continuously adjusted to compensate for the displacement caused by vehicle movement, thereby reducing image blurring.
2Measurement precision
If the capturing magnification is increased to improve image detail, then the recognition rate improves, but the displacement compensation becomes more complex
Solution Approach 1:
The patent applies preliminary action by calculating the capturing magnification rate-of-change in advance based on the measured vehicle speed. This pre-calculation allows the system to prepare the appropriate magnification adjustment before exposure, simplifying the real-time control during image capture while maintaining high recognition accuracy.
Solution Approach 2:
The patent implements feedback by using the measured vehicle speed to calculate and adjust the capturing magnification rate-of-change. The speed measurement unit provides continuous feedback on vehicle motion, which is then used to dynamically adjust the magnification compensation, creating a closed-loop system that maintains image quality without excessive complexity.
3Manufacturing precision
If the vehicle speed is measured and displacement is calculated to compensate for movement, then the image clarity improves, but the system complexity increases
Solution Approach 1:
The patent applies universality by integrating multiple functions into a unified control system. The capturing magnification control unit performs both speed-based displacement calculation and magnification adjustment in a single integrated process, reducing system complexity while maintaining image clarity through comprehensive motion compensation.
Data Source
AI summary
An image capturing apparatus provided to a movable body for capturing a clear image without blurring even if it is the case where it is moving. The image capturing apparatus includes: an image capturing unit which captures an image; a speed measurement unit which measures a speed of the movable body; a displacement calculating unit which calculates a displacement of a region indicating a subject which exists in an angle-of-view of the image capturing unit in an image captured by the image capturing unit based on the speed during an exposure time of the image capturing unit; a capturing magnification rate-of-change calculating unit which calculates a rate-of-change of a capturing magnification of the image capturing unit, wherein the capturing magnification rate-of-change calculating unit compensates the displacement; a capturing magnification control unit which controls the capturing magnification in order to change it by the rate-of-change; and a capturing timing control unit which makes the image capturing unit capture an image while the capturing magnification changing by the rate-of-change.