Optical Correction Data Segmentation for Camera Lens Systems
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Solution Overview
Problem
Existing methods for reducing image degradation in digital cameras, such as those caused by optical characteristics like chromatic aberration, struggle to achieve high accuracy and efficiency with limited optical correction data, especially when transitioning from high to low resolution image pickup apparatuses.
Innovation Solution
An output apparatus that determines correction information by combining optical system parameters and correction data, using a processor to interpolate and adjust data points for accurate image correction, even with reduced data sizes, thereby optimizing optical correction for image pickup systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical correction data is retained for all image pickup conditions in the lens unit, then image correction accuracy is improved, but data size increases
Solution Approach 1:
The patent segments optical correction data into two categories: high-resolution data retained in the lens unit for critical image pickup conditions, and low-resolution data stored in the camera body for other conditions. This segmentation allows the system to maintain high correction accuracy when needed while reducing overall data size and communication load.
Solution Approach 2:
The patent changes the resolution parameter of optical correction data based on the specific image pickup condition. High-resolution data is used for conditions requiring precise correction (e.g., specific focal lengths or apertures), while low-resolution data suffices for other conditions, optimizing the balance between accuracy and data efficiency.
2Quantity of substance
If optical correction data is reduced to reference conditions only, then data size is reduced, but correction accuracy deteriorates for non-reference conditions
Solution Approach 1:
The patent performs preliminary preparation by retaining high-resolution optical correction data for predetermined reference image pickup conditions in the lens unit before actual image capture. When shooting, the system checks whether the current condition matches a reference condition and applies the appropriate resolution level, avoiding the need to transmit all high-resolution data while ensuring accuracy when needed.
Solution Approach 2:
The patent introduces an intermediary mechanism (the camera body's storage and processing capabilities) to handle low-resolution optical correction data for non-reference conditions. This allows the lens unit to maintain a compact data set while the camera body supplements with additional correction data as needed, achieving both data reduction and maintained accuracy.
3Productivity
If partial optical correction data is selected based on image pickup element information, then communication load is reduced, but correction accuracy may be insufficient for low resolution apparatuses
Solution Approach 1:
The patent implements a dynamic data selection strategy where the resolution level of optical correction data is adaptively adjusted based on the actual image pickup condition and the capabilities of the connected camera apparatus. The system dynamically switches between using high-resolution data from the lens unit and low-resolution data from the camera body, optimizing both communication efficiency and correction accuracy for each specific scenario.
Data Source
AI summary
Provided is output apparatus configured to output correction information on combinations each of which is a combination of a value of a parameter of an optical system and correction data corresponding to the value, the system forming an image to be picked up by a camera, the information being used for determining correction amount regarding optical characteristic of the optical system the output apparatus including: memory; and processor determining the correction information based on information regarding the camera, in which the processor determines, letting positive integers M and N satisfying M<N, the correction information when a number of combinations is M so as to include information on a combination of the value and the correction data that is not included in combinations of the correction information when a number of the combinations is N, and in which the memory stores the correction information obtained when the number is N.