Optical System Characteristic Data Storage for Image Restoration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In camera systems with limited memory capacity, efficiently storing and retaining restoration filters for various optical systems and photographing conditions is challenging, leading to potential image quality deterioration due to the point spread phenomenon, as existing methods fail to prioritize data with high restoration effectiveness and often result in wasteful memory usage.
Innovation Solution
An image processing device with a characteristic data storage unit that controls restoration filters based on restoration evaluation values, prioritizing data with high image restoration effectiveness and efficiently managing storage capacity by deleting or storing data according to the type of optical system and photographing conditions, ensuring that data with a great restoration effect is preserved.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If restoration filters for all optical systems and photographing conditions are stored in camera memory, then image restoration quality is improved, but memory capacity is excessively consumed
Solution Approach 1:
The patent extracts only the essential characteristic data (point spread functions) from the complete restoration filter packages and stores only these extracted characteristics in camera memory. The full restoration filters are generated on-demand using external calculation resources, thus reducing memory storage requirements while maintaining restoration quality.
Solution Approach 2:
The patent performs preliminary extraction of characteristic data (point spread functions) from restoration filters and stores these pre-extracted characteristics in camera memory. This preliminary action allows rapid restoration processing without storing complete restoration filters, resolving the contradiction between restoration quality and memory usage.
2Measurement precision
If restoration filters are stored in lens memory and transmitted to camera, then restoration quality is improved, but communication data amount increases
Solution Approach 1:
The patent extracts only the necessary characteristic data (point spread functions) from complete restoration filter packages and transmits only these extracted characteristics from lens to camera. This extraction approach maintains restoration quality while dramatically reducing the amount of data that must be communicated between lens and camera.
3Reliability
If characteristic data is stored for all optical system combinations, then restoration effectiveness is improved, but storage efficiency deteriorates
Solution Approach 1:
The patent extracts only the essential characteristic components (point spread functions) from complete restoration filter datasets and stores only these extracted characteristics. This extraction strategy maintains restoration effectiveness for all optical system combinations while avoiding the exponential growth of storage requirements that would result from storing complete restoration filters for every possible combination.
Solution Approach 2:
The patent changes the stored parameter from complete restoration filter coefficients to extracted point spread function characteristics. This parameter transformation reduces the dimensional complexity of stored data while preserving the essential information needed for effective restoration across all optical system combinations.
Data Source
AI summary
Disclosed is a technique capable of efficiently storing and retaining characteristic data (a restoration filter or the like) of an optical system used for a restoration process in a storage unit with limited storage capacity in consideration of the degree of image restoration. An image processing device includes a characteristic data storage unit 42 which is capable of storing characteristic data of a plurality of types of optical systems, and a restoration processing unit which subjects source image data to a restoration process using a restoration filter based on a point spread function of an optical system to acquire recovered image data. In case where storing new characteristic data in the characteristic data storage unit, characteristic data which is stored in the characteristic data storage unit 42 is controlled based on a restoration evaluation value which is allocated to characteristic data according to the type of optical system.