Imaging Device Pan-Tilt Mask Tracking During Image Stabilization
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Solution Overview
Problem
Existing imaging devices with pan-tilt (PT) mechanisms struggle to accurately track and mask target regions during image-shake correction, leading to incomplete masking of sensitive areas due to image stabilization processes.
Innovation Solution
The implementation of a system that includes a pan and tilt control unit, shake detection unit, and image processing unit, which calculates and adjusts the mask-drawn position based on pan and tilt angles and correction angles to maintain the imaging direction and correct for image stabilization, ensuring accurate tracking and masking of target regions during PT image stabilization control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If PT image stabilization control is performed to correct image shake, then image stability is improved, but mask-drawn position tracking accuracy deteriorates
Solution Approach 1:
The patent introduces an intermediary calculation process that computes the relationship between PT angles and mask-drawn positions. By using the PT angle change amount as an intermediate parameter, the system can accurately track mask positions even during stabilization control, resolving the contradiction between image stability and tracking accuracy.
Solution Approach 2:
The system implements feedback by continuously monitoring PT angle changes and using this information to adjust mask-drawn position calculations in real-time. This closed-loop approach ensures that mask tracking remains accurate while the image stabilization function operates, allowing the system to adapt to ongoing stabilization adjustments.
2Adaptability or versatility
If mask-drawn position is calculated based on PT angle during PT image stabilization, then privacy masking function is enabled, but target region masking accuracy deteriorates
Solution Approach 1:
The patent applies dynamics by making the mask-drawn position calculation adaptive to the current stabilization state. Instead of using fixed PT angle relationships, the system dynamically adjusts calculations based on real-time PT angle changes and stabilization control status, enabling accurate target region masking while maintaining privacy protection functionality.
3Stability of the object's composition
If only mask image is moved with respect to captured image during PT image stabilization, then image stabilization is achieved, but correct masking of target region cannot be ensured
Solution Approach 1:
The patent segments the image processing into two independent but coordinated components: image stabilization processing and mask-drawn position calculation processing. This segmentation allows each function to operate optimally while maintaining their coordination through shared PT angle data, ensuring both image stabilization and reliable target region masking.
Data Source
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AI summary
An imaging device includes an imaging means (1001), a shake detection means (1004) that detects shake, a pan driving means (1005) and a tilt driving means (1006) that rotate the imaging means, a pan and tilt control means (1007) that controls the pan driving means and the tilt driving means such that an imaging direction of the imaging means is changed and controls the pan driving means and the tilt driving means such that the shake is corrected in accordance with a detection result of the shake detection means, and an image processing means (1002) that performs image processing on a predetermined region of an image captured by the imaging means. The image processing means determines the predetermined region based on a rotational angle of the imaging means used to change the imaging direction and a rotational angle of the imaging means used to correct the shake.