Image Processing Pipeline Distortion Correction Range Calculation
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Solution Overview
Problem
Existing image processing devices face inefficiencies in calculating input ranges for magnification chromatic aberration and distortion aberration corrections, leading to increased processing time and bus bandwidth pressure due to separate calculations and pipeline configurations.
Innovation Solution
An image processing device with a distortion correction range calculation unit that calculates input ranges for both magnification chromatic aberration and distortion aberration corrections within a single pipeline, using coordinate conversion coefficients and image processing margins to optimize input ranges for accurate and efficient processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate distortion correction processing is performed for magnification chromatic aberration and distortion aberration, then correction accuracy is improved, but processing time and device complexity increase
Solution Approach 1:
The patent combines magnification chromatic aberration correction and distortion aberration correction into a single integrated distortion correction processing unit. This merging eliminates the need for separate processing stages while maintaining both correction functions, thereby reducing overall processing time and eliminating redundant operations between separate correction units.
Solution Approach 2:
The distortion correction processing unit is designed to perform multiple functions: it handles both magnification chromatic aberration correction and distortion aberration correction within a single unit. This multi-functional design allows the system to achieve comprehensive distortion correction without requiring multiple dedicated processing units, thus reducing processing time and device complexity.
2Measurement precision
If separate distortion correction processing is performed for magnification chromatic aberration and distortion aberration, then correction accuracy is improved, but device complexity increases
Solution Approach 1:
The patent merges magnification chromatic aberration correction and distortion aberration correction into a single distortion correction processing unit. This consolidation reduces the number of separate processing units required in the image processing pipeline, thereby simplifying the overall device architecture while maintaining the capability to perform both types of corrections.
Solution Approach 2:
The integrated distortion correction processing unit is designed to handle multiple correction tasks (magnification chromatic aberration and distortion aberration) within a single multi-functional component. This universal design reduces device complexity by eliminating redundant processing units and interconnections while preserving comprehensive correction functionality.
3Productivity
If distortion correction is performed in units of blocks, then processing efficiency is improved, but input range calculation complexity increases
Solution Approach 1:
The patent performs preliminary calculation of the input range for distortion correction before the actual block-based processing begins. By pre-calculating the required input range based on the output block dimensions and distortion correction parameters, the system avoids complex real-time calculations during processing, thereby simplifying the overall system while maintaining block-based processing efficiency.
4Speed
If pipeline processing is used for image processing, then processing speed is improved, but bus bandwidth pressure increases
Solution Approach 1:
The patent merges magnification chromatic aberration correction and distortion aberration correction into a single processing stage within the pipeline. This consolidation reduces the number of separate processing stages and their associated data transfers, thereby maintaining high processing speed while reducing the cumulative bus bandwidth pressure that would result from multiple separate correction units.
Data Source
AI summary
An image processing device may include an image processing pipeline in which at least a magnification chromatic aberration correction processing unit that corrects magnification chromatic aberration of an imaging optical system, a distortion aberration correction processing unit that corrects distortion aberration of the imaging optical system, and an imaging processing unit that performs image processing with respect to image data and outputs image processed-image data to the distortion aberration correction processing unit are included in one pipeline, magnification chromatic aberration of the image data having been corrected by the magnification chromatic aberration correction processing unit, a sequencer that controls operations of respective elements included in the image processing pipeline, and a distortion correction range calculation unit that calculates a distortion aberration correction input range.