Physically Based Camera Motion Compensation for High-Frequency Vibration Damping
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Solution Overview
Problem
Conventional digital cameras struggle to compensate for high-frequency vibrations above 18 KHz, which affect image clarity, as existing image stabilization methods are inadequate for frequencies beyond this range.
Innovation Solution
A system that includes vibration sensors and actuators to detect and dampen high-frequency vibrations, using physically based motion compensation by inverting and phase shifting the vibration signal, and adjusting the phase angle to account for lag times, allowing the actuators to counteract vibrations effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional image processing software is used to track image location and remove basic camera jitter, then basic stabilization is achieved within a certain range of motion, but high-frequency vibrations above 18 KHz cannot be effectively compensated
Solution Approach 1:
The patent replaces conventional software-based image processing with a physical actuator system that directly counteracts vibrations. Vibration sensors detect high-frequency vibrations above 18 KHz, and actuators physically move the image sensor or lens assembly to compensate for these vibrations in real-time, extending stabilization effectiveness to frequencies beyond the capability of traditional software methods
Solution Approach 2:
The patent introduces vibration sensors and actuators as intermediary components between the camera and the image capture process. These intermediaries detect and physically counteract vibrations before they affect the image sensor, providing a bridge between mechanical vibration and optical stabilization that enables high-frequency compensation
2Ease of operation
If image processing software is used for jitter removal, then basic stabilization is provided, but the method is limited to a certain range of motion and frequency
Solution Approach 1:
The patent implements a dynamic stabilization system where actuators continuously adjust their position based on real-time vibration feedback. The system adapts to varying vibration frequencies and amplitudes by modifying actuator movement patterns, enabling effective compensation across a wide range of motion and frequency conditions rather than being limited to predetermined ranges
3Manufacturing precision
If traditional image compensation schemes are used, then basic jitter removal is achieved, but vibrations above 18 KHz remain problematic
Solution Approach 1:
The patent applies preliminary anti-action by detecting vibrations before they fully impact the image quality and generating counteracting forces through actuators. The vibration compensation system proactively counteracts high-frequency vibrations above 18 KHz by moving the optical components in the opposite direction of the detected vibration, preventing image degradation before it occurs
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 solution significantly improves image quality by effectively reducing high-frequency vibrations, ensuring stable image capture even at high-speed shutter rates, addressing the limitations of conventional stabilization methods.
Implementation Method 1
detecting vibrations at an image sensor of a camera
Implementation Method 2
sending the vibration signal to one or more actuators, wherein the actuators dampen the vibrations
Data Source
AI summary
Implementations generally provide physically based camera motion compensation. In some implementations, a method includes detecting vibrations at an image sensor of a camera. The method further includes determining a vibration signal from the vibrations, wherein the vibration signal includes one or more of a horizontal component and a vertical component. The method further includes sending the vibration signal to one or more actuators, wherein the actuators dampen the vibrations.