Multi-Path Signal Fusion with Display Standard Alignment
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Solution Overview
Problem
Existing methods struggle to effectively fuse signals of varying display standards, such as SDR and HDR, leading to issues like inter-frame flicker and degradation of picture quality, especially when handling multiple video and graphic paths with different standards.
Innovation Solution
A method involving display standard conversion aligns the display standard of secondary signals with that of a higher standard main signal, followed by fusion, using techniques like color gamut and luminance domain conversions, and weighted averaging to ensure picture quality assurance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If signals from multiple paths with different display standards (SDR, HDR, HDR10+) are fused directly without conversion, then the processing complexity is reduced, but picture quality degradation and inter-frame flicker occur
Solution Approach 1:
The patent applies parameter changes by converting signals from different display standards (SDR, HDR, HDR10+) to a unified display standard before fusion. This involves adjusting color gamut, luminance domain, and other parameters to ensure consistency across all signal paths, thereby maintaining picture quality while managing processing complexity through systematic parameter alignment.
Solution Approach 2:
The patent introduces an intermediary conversion process that acts as a mediator between signals of different display standards. By using display standard conversion as an intermediate step before fusion, the system reconciles differences in color gamut and luminance domains, preventing direct incompatibility from causing picture quality degradation and inter-frame flicker.
2Reliability
If display standard conversion is performed on secondary signals before fusion, then picture quality is maintained and inter-frame flicker is reduced, but processing complexity increases
Solution Approach 1:
The patent applies preliminary action by performing display standard conversion on secondary signals before the fusion operation. This pre-conversion ensures that all signals are in the same display standard format, allowing the fusion process to proceed without encountering compatibility issues that would otherwise require more complex handling during or after fusion.
Solution Approach 2:
The patent segments the signal processing into distinct stages: first converting each signal path to the target display standard independently, then performing fusion. This segmentation allows complex conversion operations to be performed modularly on individual signals before aggregation, making the overall process more manageable and efficient.
3Measurement precision
If frame-level meta data alignment is performed for HDR signals, then signal fusion accuracy is improved, but processing time and complexity increase
Solution Approach 1:
The patent applies preliminary action by performing meta data alignment and display standard conversion in advance before the actual fusion operation. By preparing all necessary conversion parameters and metadata in advance, the system reduces the computational burden during the fusion process itself, thereby improving accuracy without proportionally increasing processing time.
Data Source
AI summary
A method and system for fusing a plurality of signals, a device, a storage medium, and a computer program product are provided. The method includes: obtaining a picture signal of a target frame in a video of a main path as a main picture signal; obtaining a picture signal of a secondary path as a secondary picture signal; performing display standard conversion on the secondary picture signal, and aligning a display standard of the secondary picture signal with a display standard of the main picture signal; and fusing the main picture signal and the secondary picture signal to obtain a target picture signal after performing the display standard conversion on the secondary picture signal. This helps to implement signal fusion with picture quality (PQ) assurance.