Dual Image Stabilization Control for Angular and Shift Shake
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Solution Overview
Problem
Conventional imaging systems fail to effectively correct image blurs occurring in both the central and peripheral portions of an image due to angular and shift shakes, particularly in short-distance imaging with high magnification, leading to residual image degradation.
Innovation Solution
A control apparatus and method that utilizes a first and second correcting member in an imaging system, with a processor to determine correction ratios for angular and shift shakes, enabling simultaneous stabilization by moving image sensors and lens units to address image blurs in both central and peripheral image areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If image sensor image stabilization is used to correct image blur in the central portion of the image, then the image blur in the central portion is corrected, but the image blur in the peripheral portion remains significantly corrected
Solution Approach 1:
The patent combines image sensor image stabilization with in-lens image stabilization to achieve comprehensive correction across the entire image frame. The control apparatus coordinates both stabilization mechanisms to work together, merging their correction effects to address both central and peripheral image blur simultaneously.
Solution Approach 2:
The patent applies different correction ratios to different regions of the image. The control apparatus calculates region-specific correction ratios based on the shake type (angular or shift) and applies appropriate correction strength to central and peripheral regions differently, ensuring optimal stabilization for each area.
2Adaptability or versatility
If conventional image stabilization methods are used, then correction ratios can be set for angular shake, but shift shake correction is not addressed particularly in short-distance imaging
Solution Approach 1:
The control apparatus dynamically adjusts correction ratios based on the detected shake type and imaging conditions. When shift shake is detected in short-distance imaging, the system automatically applies appropriate correction ratios for shift shake, transitioning between different correction modes to maintain precision across varying conditions.
Solution Approach 2:
The patent changes the correction ratio parameters based on the type of shake detected. For angular shake, one set of correction ratios is applied, while for shift shake (particularly in short-distance imaging), different correction ratios are applied to the image sensor or lens units to effectively correct the specific blur pattern.
3Device complexity
If a single correcting member is used for image stabilization, then the system structure is simple, but simultaneous correction of central and peripheral image blur is not achieved
Solution Approach 1:
The patent merges image sensor image stabilization with in-lens image stabilization into a coordinated system. The control apparatus manages both correcting members together, allowing them to work in conjunction to achieve comprehensive correction across the entire image frame while maintaining reasonable system complexity through unified control.
Data Source
AI summary
A control apparatus for use in an imaging system that includes a first correcting member movable for image stabilization and provided to one of an image pickup apparatus and a lens apparatus detachably attachable to the image pickup apparatus, and a second correcting member movable for the image stabilization and provided to the other of the image pickup apparatus and the lens apparatus acquires first correction ratios of the first correcting member and the second correcting member for angular shake of the imaging system, and second correction ratios of the first correcting member and the second correcting member for shift shake of the imaging system.