Pixel Value Adjustment Surfaces for Multi-State Camera Imaging
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Solution Overview
Problem
Existing imaging systems with variable optical states, such as zoom lenses, face challenges in accurately correcting pixel value variations across the pixel array due to lens shading and other spatially-dependent factors, requiring multiple gain adjustment surfaces that consume significant memory and resources.
Innovation Solution
Storing a set of coefficients that can generate multiple positional gain adjustment surfaces for various optical states, reducing memory requirements by representing multiple adjustment surfaces with a smaller set of coefficients, allowing for accurate interpolation and extrapolation of correction values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple gain adjustment surfaces are stored for different optical states, then correction accuracy is improved, but memory storage requirements increase significantly
Solution Approach 1:
Multiple gain adjustment surfaces for different optical states are merged into a single three-dimensional data structure. The patent combines what would traditionally be separate two-dimensional gain adjustment surfaces into a unified 3D array that can represent all optical states, reducing memory requirements while maintaining the ability to provide accurate corrections for each specific optical state.
Solution Approach 2:
The patent transitions from storing multiple separate two-dimensional gain adjustment surfaces to a single three-dimensional data structure. By adding an optical state dimension to the traditional two-dimensional pixel array, the system efficiently organizes correction data for multiple optical states without requiring proportional increases in memory storage.
2Measurement precision
If multiple gain adjustment surfaces are stored for different optical states, then correction accuracy is improved, but processing time and energy consumption increase
Solution Approach 1:
The patent pre-organizes correction data in a three-dimensional array structure that is ready for rapid retrieval. By preparing the data in this optimized format during system initialization or calibration, the system eliminates the need for time-consuming calculations or searches during actual image processing, enabling fast access to the appropriate gain adjustment surface for any given optical state.
3Quantity of substance
If a single gain adjustment surface is used for all optical states, then memory storage is reduced, but correction accuracy deteriorates
Solution Approach 1:
The patent implements a dynamic data structure that adapts to the current optical state. Rather than using a static single surface or storing all possible surfaces, the system dynamically selects and applies the appropriate gain adjustment surface based on the current optical parameters, providing accurate corrections for each state while maintaining efficient memory usage.
Data Source
AI summary
Methods, apparatuses and systems for storing approximations of multiple spatial pixel value adjustment surfaces for use in pixel value correction. The adjustment surfaces may be used for positional gain adjustment. A representation of the multiple adjustment surfaces is stored as coefficients representing a multi-dimensional solid of two-dimensional adjustment surfaces. The stored coefficients are used to determine a plurality of additional sets of coefficients which sets are then in turn used to determine pixel correction values of adjustment surfaces.