Image Stabilizer Phase Adjustment for Shutter Vibration
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Solution Overview
Problem
The existing camera shake detection device does not generate an appropriate shake signal, leading to insufficient image stabilization precision.
Innovation Solution
An image stabilizer device with a detection unit for angular speed, an acquiring unit for shutter speed information, an adjusting unit that advances the phase of the shake signal when the shutter speed is faster than a predetermined speed, and a correction unit to address the influence of camera shake, utilizing a gyro sensor, lens mount, filter, and lens controller to generate a more precise shake signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional camera shake detection device is used, then the device structure is simple, but the image stabilization precision is insufficient due to inappropriate shake signal generation
Solution Approach 1:
The filter unit performs preliminary phase adjustment on the shake signal before it is used for image stabilization control. By advancing the phase of the shake signal in advance based on the shutter speed, the system ensures that the stabilization signal is properly synchronized with the actual camera shake, improving measurement precision without adding complex hardware
Solution Approach 2:
The filter unit acts as an intermediary component between the shake detection unit and the image stabilization execution unit. It processes the raw shake signal by phase adjustment and outputs a corrected signal, serving as a mediator that improves signal quality without requiring fundamental changes to the detection or execution mechanisms
2Measurement precision
If the shutter speed is increased to reduce motion blur, then the image quality improves, but the mechanical impact and vibrations from shutter operation increase, causing erroneous shake detection
Solution Approach 1:
The system applies preliminary counter-action by detecting the shutter speed and automatically adjusting the phase of the shake signal accordingly. When high shutter speeds are used, the filter unit advances the phase to compensate for the mechanical impact timing, effectively canceling out the erroneous detection caused by shutter vibrations before they affect the stabilization control
Solution Approach 2:
The system uses feedback from the shutter speed information to dynamically adjust the shake signal processing. The filter unit receives feedback about the current shutter speed setting and automatically modifies the phase adjustment accordingly, creating a closed-loop system that adapts to different shooting conditions and maintains accurate shake detection across various shutter speeds
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 enables high-precision image stabilization by generating a more appropriate shake signal, effectively reducing the impact of camera shake and shutter vibrations on captured images.
Implementation Method 1
a gyro sensor that detects an angular speed of the interchangeable lens, and outputs a shake signal associated with the detected angular speed
Data Source
AI summary
The disclosure herein aims to provide an image stabilizer device that generates a more appropriate shake signal. The image stabilizer device for a camera system in the present disclosure includes a detection unit that detects an angular speed of the camera system, and outputs a shake signal associated with the detected angular speed, an acquiring unit that acquires information indicating a set shutter speed, an adjusting unit that advances a phase of the shake signal to generate an adjusted signal, and outputs the adjusted signal, when the set shutter speed is faster than a predetermined speed, and a correction unit that corrects an influence on an output of the image stabilizer device due to the shake associated with the angular speed, based on the shake signal or the adjusted signal.