Moving-Image Correction Coefficient Calculation Reducing Computational Load
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for improving moving-image quality by calculating correction coefficients are inefficient as they either fail to reduce calculation amounts significantly or result in large calculation loads, limiting the effectiveness of image quality improvement.
Innovation Solution
An apparatus and method that calculates temporary correction coefficients for moving-image frames based on a first standard, storing and using these coefficients to determine moving-image correction coefficients, which are then applied to reduce the calculation load while improving image quality by adjusting intervals and weighting coefficients based on image changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If correction coefficients are calculated for every frame to improve image quality, then image quality is improved, but calculation amount becomes voluminous
Solution Approach 1:
The patent segments the correction coefficient calculation process into two distinct stages: (1) temporary correction coefficient calculation performed on extracted frames at reduced intervals, and (2) final moving-image correction coefficient calculation performed on the temporary coefficients. This segmentation reduces the overall calculation amount while maintaining image quality by avoiding full calculation on every frame.
Solution Approach 2:
The patent performs preliminary calculation of temporary correction coefficients on a subset of extracted frames before performing the final correction coefficient calculation. This preliminary action on representative frames allows the system to prepare correction data in advance, reducing the computational burden during actual correction while maintaining quality.
2Quantity of substance
If correction coefficients are calculated only when scene change is detected to reduce calculation amount, then calculation amount is reduced, but image quality improvement cannot be really expected
Solution Approach 1:
The patent implements periodic calculation of temporary correction coefficients on extracted frames at predetermined intervals, rather than only on scene changes. This periodic action ensures that correction coefficients are updated regularly throughout the video sequence, maintaining image quality improvement while still reducing calculation amount compared to frame-by-frame processing.
3Manufacturing precision
If predetermined threshold is reduced to calculate correction coefficients with shorter time interval, then image quality is improved, but calculation amount becomes large
Solution Approach 1:
The patent segments the correction calculation into two levels: temporary coefficients calculated at shorter intervals on extracted frames, and final coefficients calculated on the temporary results. This segmentation allows using a reduced threshold for temporary coefficient updates without proportionally increasing the total calculation amount, as the final correction coefficient calculation remains efficient.
Solution Approach 2:
The patent performs preliminary temporary correction coefficient calculations at shorter time intervals on extracted frames before final correction. This preliminary action at reduced intervals prepares correction data in advance, allowing the system to achieve better image quality with shorter effective intervals without proportionally increasing the total computational burden of final correction.
Data Source
AI summary
A temporary correction-coefficient calculator of a moving-image correction-coefficient calculating apparatus calculates temporary gamma values to be applied to frames extracted from frames of a moving-image at a predetermined time interval, a storage unit stores the calculated temporary gamma values, and a correction-coefficient calculator calculates gamma values to be applied to the frames of the moving-image based on the stored temporary gamma values.