Camera Shake Reduction via Dynamic Threshold Adjustment
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Solution Overview
Problem
Existing image pickup apparatuses face challenges in effectively isolating vibrations, particularly at lower frequencies or higher amplitudes, which can result in blurry images and difficulty in maintaining the desired capturing direction, especially when installed on moving platforms like boats.
Innovation Solution
The apparatus includes a control unit to manage the pan and tilt drive units, a detection unit to sense camera shake, and a determination unit to assess and correct the turn angle, enabling vibration isolation by adjusting the capturing direction to minimize camera shake and prevent positioning errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If pan and tilt drive units are used to change capturing direction, then the ability to maintain desired capturing direction is improved, but positioning errors occur due to vibration at lower frequencies or higher amplitudes
Solution Approach 1:
The system uses a detection unit to detect vibration in real-time and feeds this information back to the control unit, which then adjusts the pan and tilt drive units to compensate for the detected vibration, forming a closed-loop feedback control system that maintains positioning accuracy despite vibrations
Solution Approach 2:
The determination unit dynamically changes the threshold for determining normal turn angles based on detected vibration characteristics. When vibration is detected, the system adjusts the threshold parameters to accommodate the vibrating conditions, allowing the drive units to make appropriate corrections while preventing false error detections
2Manufacturing precision
If vibration isolation control is implemented, then image clarity is improved, but drive unit misalignment occurs due to aggressive correction at lower frequencies
Solution Approach 1:
The system dynamically adjusts the vibration isolation control strategy based on the detected vibration characteristics. The control unit modifies correction actions in real-time based on whether the vibration is at lower frequencies or higher amplitudes, preventing aggressive corrections that would cause misalignment while still maintaining image clarity
Solution Approach 2:
The system changes control parameters dynamically based on vibration frequency and amplitude detection. When lower frequency vibrations are detected, the system adjusts the correction magnitude and response time to prevent drive unit misalignment, while maintaining sufficient correction to ensure image clarity
3Measurement precision
If turn angle determination is performed continuously, then positioning accuracy is improved, but false error detections increase due to normal vibration
Solution Approach 1:
The determination unit dynamically changes the threshold for determining normal turn angles based on detected vibration characteristics. When vibration is detected, the system adjusts the threshold parameters to accommodate the vibrating conditions, allowing the drive units to make appropriate corrections while preventing false error detections
Solution Approach 2:
The system transitions from static threshold determination to dynamic threshold adjustment based on real-time vibration detection. The determination unit adapts its judgment criteria according to the current vibration state, enabling accurate distinction between normal vibration-induced movements and actual positioning errors
Data Source
AI summary
An apparatus includes a control unit configured to control a pan drive unit or a tilt drive unit to change a capturing direction of a pickup unit, a detection unit configured to detect shaking to the pickup unit, and a determination unit configured to perform determination processing for determining whether or not a turn angle of the pan drive unit or the tilt drive unit is normal, in which in a case where the detection unit detects the shaking, the control unit executes the control of the pan drive unit or the tilt drive unit based on the detected shaking so that the detected shaking is to be reduced, and the determination unit performs the determination processing according to whether or not the control unit executes the control of the pan drive unit or the tilt drive unit based on the detected shaking.