Vibration-proof Optical System Distortion Correction
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Solution Overview
Problem
Existing image processing technologies fail to accurately correct distortion aberrations in captured images due to the eccentricity of vibration-proof optical systems, as the correction methods based on deviation amounts between the image center and optical axis center do not fully account for the distinct changes in distortion aberration shapes caused by these systems.
Innovation Solution
An image processing apparatus and method that acquire the driving amount of a vibration-proof optical system, convert it into a converted central deviation amount using a correlation between distortion aberration shapes on the image surface, and apply this conversion to correct distortion aberrations, effectively addressing the asymmetrical changes caused by the eccentricity of the vibration-proof optical system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If geometric conversion processing is used to correct distortion aberration based on deviation amount between image center and optical axis center, then distortion correction can be performed, but correction accuracy deteriorates due to eccentricity of vibration-proof optical system
Solution Approach 1:
The invention changes the parameter used for distortion correction from the original deviation amount between image center and optical axis center to a converted deviation amount that is calculated by correcting the original deviation amount based on the driving amount of the vibration-proof optical system. This parameter transformation accounts for the eccentricity effect and restores correction accuracy during vibration-proof operation
Solution Approach 2:
The invention introduces feedback by using the driving amount of the vibration-proof optical system to adjust the deviation amount parameter. The driving amount information is fed back into the distortion correction calculation to dynamically adjust the correction parameter, ensuring accuracy regardless of the vibration-proof system's operational state
2Device complexity
If the deviation amount is used directly for distortion correction without conversion, then the correction process is simple, but the correction accuracy deteriorates due to asymmetrical distortion shape changes caused by vibration-proof optical system eccentricity
Solution Approach 1:
The invention transforms the deviation amount parameter by applying a correction based on the vibration-proof optical system's driving amount. This parameter change compensates for the asymmetrical distortion shape changes caused by eccentricity, maintaining correction accuracy without requiring a completely different correction approach
Solution Approach 2:
The invention introduces an intermediary calculation step where the driving amount of the vibration-proof optical system is used to adjust the deviation amount before applying it to distortion correction. This intermediary process bridges the gap between the simple deviation amount calculation and the need for accurate correction under eccentricity conditions
Data Source
AI summary
An image processing apparatus includes a vibration-proof optical system driving amount acquiring section, a distortion aberration correcting section, and a deviation amount converting section. The vibration-proof optical system driving amount acquiring section acquires a driving amount of the vibration-proof optical system. The distortion aberration correcting section corrects a distortion aberration on based on a deviation amount to a captured image. The deviation amount converting section calculates the deviation amount corresponding to the driving amount on the basis of a correlation between a shape of the distortion aberration corresponding to the driving amount of the vibration-proof optical system and a shape of the distortion aberration corresponding to the deviation amount.