Mountable Camera Stabilization Switching Between OIS and EIS
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Solution Overview
Problem
Current mountable camera devices face a trade-off between the cost and power efficiency of Electronic Image Stabilization (EIS) and the superior stabilization capabilities of Optical Image Stabilization (OIS), particularly in environments with varying degrees of camera vibrations, necessitating a hybrid solution that optimizes both.
Innovation Solution
A mountable camera device integrating both EIS and OIS technologies, with processing circuitry to dynamically select the most effective stabilization method based on real-time measurements of camera vibrations and object location, using a predefined stabilization margin to switch between mechanical and digital compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If Optical Image Stabilization (OIS) is used to achieve superior stabilization capabilities, then image stability is improved, but cost and power consumption increase
Solution Approach 1:
The system dynamically switches between OIS and EIS based on real-time vibration analysis. The processing circuitry evaluates the characteristics of detected vibrations and selects the most appropriate stabilization method, making the stabilization approach adaptive rather than static. This resolves the contradiction by using OIS only when necessary for high-stability scenarios while relying on EIS for normal conditions.
Solution Approach 2:
The system changes the operational parameters of the stabilization system by switching between two distinct modes (OIS and EIS) based on vibration characteristics. This parameter change allows the system to optimize power consumption by selecting EIS for low-vibration scenarios while maintaining image stability through OIS when vibration levels require mechanical compensation.
2Stability of the object's composition
If Optical Image Stabilization (OIS) is used continuously to maintain image stability, then image quality is improved, but mechanical wear increases
Solution Approach 1:
Instead of continuous OIS operation, the system employs periodic evaluation of vibration characteristics and switches between OIS and EIS accordingly. The processing circuitry continuously monitors vibrations and periodically adjusts the stabilization method, using OIS only during periods when vibration characteristics warrant mechanical compensation. This periodic activation significantly reduces mechanical wear while maintaining image stability.
Solution Approach 2:
The system extracts and isolates the mechanical OIS component from continuous operation, activating it only when specifically needed based on vibration analysis. By separating OIS activation from continuous operation and triggering it only when vibration characteristics exceed certain thresholds, the system minimizes mechanical component usage and extends their operational life.
3Use of energy by moving object
If Electronic Image Stabilization (EIS) is used to reduce cost and power consumption, then operational efficiency is improved, but stabilization margin is limited
Solution Approach 1:
The system dynamically adjusts the stabilization approach based on real-time vibration characteristics. When vibration levels are low, EIS is used for power efficiency. When vibration characteristics indicate higher instability risks, the system dynamically transitions to OIS to provide the necessary stabilization margin, thus adapting the stabilization capacity to actual needs.
Solution Approach 2:
The processing circuitry acts as an intermediary that evaluates vibration characteristics and mediates between EIS and OIS selection. This intermediary analysis of vibration patterns allows the system to determine when EIS is sufficient and when OIS intervention is needed, optimizing the balance between power consumption and stabilization margin.
4Adaptability or versatility
If a hybrid stabilization system is implemented to optimize both stability and power efficiency, then adaptability is improved, but device complexity increases
Solution Approach 1:
The camera device is designed with multi-functionality by integrating both OIS and EIS capabilities within a single system. The processing circuitry universally handles both stabilization methods and automatically selects the appropriate one based on vibration characteristics. This universal design allows the system to adapt to various vibration scenarios while managing complexity through integrated control logic.
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 hybrid approach ensures high-quality image capture across varying environments by optimizing stabilization performance, minimizing mechanical wear, and extending the camera's operational life while maintaining image stability and clarity.
Implementation Method 1
a vibration sensor for measuring camera vibrations
Implementation Method 2
an optical image stabilization mechanism for physically compensating for the camera vibrations by physically moving the lens and/or the image sensor
Implementation Method 3
electronic image stabilization circuitry for digitally compensating for the camera vibrations by image processing
Data Source
Figure 1
Figure 2~3
Figure 4A~4B
AI summary
The present disclosure relates to a mountable camera device, comprising: an image capturing unit for capturing a sequence of images, the image capturing unit comprising at least a lens and an image sensor; a vibration sensor for measuring camera vibrations; an optical image stabilization mechanism for physically compensating for the camera vibrations by physically moving the lens and/or the image sensor; electronic image stabilization circuitry for digitally compensating for the camera vibrations by image processing; and processing circuitry configured to select between the optical image stabilization mechanism and the electronic image stabilization circuitry by comparing the camera vibrations against a predefined stabilization margin and/or based on a location of an object of interest in the sequence of images. The disclosure further relates to a method for controlling a mountable camera device having optical image stabilization capabilities and electronic image stabilization capabilities.