Imaging Support Device Focal Length Registration Control
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Solution Overview
Problem
Existing imaging systems face challenges in accurately setting a subject image position within a captured image, particularly when relying solely on lens movement mechanisms or image region movement, especially at varying focal lengths.
Innovation Solution
An imaging support device that adjusts the ratio of application between lens moving mechanisms and image region movement portions based on focal length thresholds, using both lens and imaging element shake correction mechanisms to optimize image registration accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only lens moving mechanism is used for registration control, then device complexity is reduced, but image registration accuracy deteriorates at varying focal lengths
Solution Approach 1:
The patent implements dynamic switching between lens moving mechanism and image region movement portion based on focal length conditions. The control portion automatically selects or combines mechanisms according to whether the focal length is above or below a threshold, optimizing registration accuracy for different imaging scenarios without requiring a fixed complex structure
Solution Approach 2:
The patent changes the operational parameters of the registration control system by adjusting which mechanism (lens moving or image region movement) is activated based on focal length parameter. This parameter-based control allows the system to adapt its complexity and accuracy characteristics to match the imaging requirements
2Manufacturing precision
If only image region movement portion is used for registration control, then manufacturing precision requirements are reduced, but registration accuracy deteriorates at certain focal lengths
Solution Approach 1:
The system dynamically adjusts the reliance on image region movement versus lens moving mechanism based on focal length. At focal lengths above the threshold, image region movement is prioritized; below the threshold, lens moving mechanism is prioritized. This dynamic adjustment ensures high registration accuracy across different focal length ranges while maintaining reasonable manufacturing precision requirements
Solution Approach 2:
The patent segments the registration control function into two distinct mechanisms: lens moving mechanism for short focal lengths and image region movement portion for long focal lengths. This segmentation allows each mechanism to be optimized for its specific operational range, improving overall accuracy without requiring both mechanisms to operate at full precision across all conditions
3Device complexity
If registration control is performed without considering focal length, then device complexity is reduced, but registration accuracy deteriorates across different focal lengths
Solution Approach 1:
The control portion uses focal length as a key parameter to determine the registration control strategy. By monitoring focal length changes and switching between different control modes (lens moving vs. image region movement), the system achieves high registration accuracy across varying focal lengths without requiring a fundamentally complex multi-mechanism structure operating simultaneously
Solution Approach 2:
The registration control system is made dynamic by continuously monitoring focal length and adjusting the active control mechanism accordingly. This dynamic adaptation allows the system to maintain high accuracy across different focal length ranges while keeping the overall device complexity manageable through selective activation of mechanisms
Data Source
AI summary
An imaging support method includes acquiring a focal length of an imaging apparatus, detecting a subject image position of a target subject image showing a target subject in a captured image obtained by capturing an imaging region including the target subject by the imaging apparatus, and performing registration control for setting the detected subject image position to a specific position in the captured image by increasing a ratio of application of an image region movement component compared to a lens moving mechanism in a case where the acquired focal length is greater than or equal to a threshold value, and increasing a ratio of application of the lens moving mechanism compared to the image region movement component in a case where the focal length is less than the threshold value.