Camera Lens Position Stabilization for Accurate Depth Calculation
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Solution Overview
Problem
Existing computer vision methods face challenges in accurately performing image switching, image fusion, and depth calculation across multiple cameras, particularly in scenarios where optical image stabilization is required, leading to potential blurring and inaccuracies due to lens position variations and external motion.
Innovation Solution
An electronic device with a processing circuit, multiple cameras, position sensors, and actuators that calculate relative optical geometry and enable optical image stabilization to perform image switching, image fusion, or depth calculation, stabilizing lens positions to maintain image quality and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical image stabilization is enabled to compensate for motion, then image quality is improved, but lens position variations cause inaccuracies in depth calculation and image fusion
Solution Approach 1:
The system uses position sensors to detect lens positions in real-time and feeds this information back to the processing circuit. The processing circuit then compensates for lens position variations by adjusting calculation parameters for depth calculation and image fusion, ensuring accurate results even when lenses are in non-standard positions due to stabilization movements.
Solution Approach 2:
The patent changes the parameter set used for depth calculation and image fusion based on the detected lens positions. When optical stabilization moves lenses to non-standard positions, the system dynamically adjusts the geometric parameters and calibration data used in subsequent image processing operations, maintaining accuracy despite parameter variations.
2Measurement precision
If lens positions are stabilized to maintain image quality, then image processing accuracy is improved, but the system complexity increases due to additional sensors and calculation requirements
Solution Approach 1:
The position sensors serve multiple functions: they monitor lens positions for both optical stabilization control and for providing data to the processing circuit for accurate depth calculation and image fusion. This multi-functionality reduces the need for separate sensing systems, thereby limiting the increase in overall system complexity.
Solution Approach 2:
The patent combines the optical stabilization control system with the image processing system by integrating position sensor data into both stabilization control and subsequent image processing operations. This merging allows a single sensing infrastructure to support multiple critical functions, reducing redundant components.
3Measurement precision
If multiple cameras are used for depth calculation and image fusion, then measurement capability is improved, but lens position variations cause non-smooth transitions and errors
Solution Approach 1:
The system performs preliminary compensation for lens position variations by calculating corrected geometric relationships between cameras before executing image fusion and depth calculation. By pre-adjusting for expected lens position differences, the system ensures smooth transitions and consistent results across multiple cameras without visible artifacts or errors.
Data Source
AI summary
An image processing method includes: obtaining, by a first position sensor, a first lens position of a first camera; obtaining, by a second position sensor, a second lens position of a second camera; calculating, by a processing circuit, a relative optical geometry of the first camera and the second camera according to the first lens position and the second lens position; and performing, by the processing circuit, an image switch, an image fusion, or a depth calculation based on the relative optical geometry on the condition that an optical image stabilization is enabled to at least one of the first camera and the second camera.